Merge github.com/syncthing/usage-reporting into main repo
This commit is contained in:
Jakob Borg
commit
37cd5a0bec
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@ -0,0 +1,324 @@
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package main
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import (
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"database/sql"
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"log"
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"os"
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"time"
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_ "github.com/lib/pq"
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)
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var dbConn = getEnvDefault("UR_DB_URL", "postgres://user:password@localhost/ur?sslmode=disable")
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func getEnvDefault(key, def string) string {
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if val := os.Getenv(key); val != "" {
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return val
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}
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return def
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}
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func main() {
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log.SetFlags(log.Ltime | log.Ldate)
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log.SetOutput(os.Stdout)
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db, err := sql.Open("postgres", dbConn)
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if err != nil {
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log.Fatalln("database:", err)
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}
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err = setupDB(db)
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if err != nil {
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log.Fatalln("database:", err)
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}
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for {
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runAggregation(db)
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// Sleep until one minute past next midnight
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sleepUntilNext(24*time.Hour, 1*time.Minute)
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}
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}
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func runAggregation(db *sql.DB) {
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since := maxIndexedDay(db, "VersionSummary")
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log.Println("Aggregating VersionSummary data since", since)
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rows, err := aggregateVersionSummary(db, since)
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if err != nil {
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log.Fatalln("aggregate:", err)
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}
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log.Println("Inserted", rows, "rows")
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log.Println("Aggregating UserMovement data")
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rows, err = aggregateUserMovement(db)
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if err != nil {
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log.Fatalln("aggregate:", err)
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}
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log.Println("Inserted", rows, "rows")
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log.Println("Aggregating Performance data")
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since = maxIndexedDay(db, "Performance")
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rows, err = aggregatePerformance(db, since)
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if err != nil {
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log.Fatalln("aggregate:", err)
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}
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log.Println("Inserted", rows, "rows")
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log.Println("Aggregating BlockStats data")
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since = maxIndexedDay(db, "BlockStats")
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rows, err = aggregateBlockStats(db, since)
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if err != nil {
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log.Fatalln("aggregate:", err)
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}
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log.Println("Inserted", rows, "rows")
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}
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func sleepUntilNext(intv, margin time.Duration) {
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now := time.Now().UTC()
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next := now.Truncate(intv).Add(intv).Add(margin)
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log.Println("Sleeping until", next)
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time.Sleep(next.Sub(now))
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}
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func setupDB(db *sql.DB) error {
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_, err := db.Exec(`CREATE TABLE IF NOT EXISTS VersionSummary (
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Day TIMESTAMP NOT NULL,
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Version VARCHAR(8) NOT NULL,
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Count INTEGER NOT NULL
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)`)
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if err != nil {
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return err
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}
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_, err = db.Exec(`CREATE TABLE IF NOT EXISTS UserMovement (
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Day TIMESTAMP NOT NULL,
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Added INTEGER NOT NULL,
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Bounced INTEGER NOT NULL,
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Removed INTEGER NOT NULL
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)`)
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if err != nil {
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return err
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}
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_, err = db.Exec(`CREATE TABLE IF NOT EXISTS Performance (
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Day TIMESTAMP NOT NULL,
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TotFiles INTEGER NOT NULL,
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TotMiB INTEGER NOT NULL,
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SHA256Perf DOUBLE PRECISION NOT NULL,
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MemorySize INTEGER NOT NULL,
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MemoryUsageMiB INTEGER NOT NULL
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)`)
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if err != nil {
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return err
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}
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_, err = db.Exec(`CREATE TABLE IF NOT EXISTS BlockStats (
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Day TIMESTAMP NOT NULL,
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Reports INTEGER NOT NULL,
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Total INTEGER NOT NULL,
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Renamed INTEGER NOT NULL,
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Reused INTEGER NOT NULL,
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Pulled INTEGER NOT NULL,
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CopyOrigin INTEGER NOT NULL,
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CopyOriginShifted INTEGER NOT NULL,
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CopyElsewhere INTEGER NOT NULL
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)`)
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if err != nil {
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return err
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}
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var t string
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row := db.QueryRow(`SELECT 'UniqueDayVersionIndex'::regclass`)
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if err := row.Scan(&t); err != nil {
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_, err = db.Exec(`CREATE UNIQUE INDEX UniqueDayVersionIndex ON VersionSummary (Day, Version)`)
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}
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row = db.QueryRow(`SELECT 'VersionDayIndex'::regclass`)
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if err := row.Scan(&t); err != nil {
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_, err = db.Exec(`CREATE INDEX VersionDayIndex ON VersionSummary (Day)`)
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}
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row = db.QueryRow(`SELECT 'MovementDayIndex'::regclass`)
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if err := row.Scan(&t); err != nil {
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_, err = db.Exec(`CREATE INDEX MovementDayIndex ON UserMovement (Day)`)
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}
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row = db.QueryRow(`SELECT 'PerformanceDayIndex'::regclass`)
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if err := row.Scan(&t); err != nil {
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_, err = db.Exec(`CREATE INDEX PerformanceDayIndex ON Performance (Day)`)
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}
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row = db.QueryRow(`SELECT 'BlockStatsDayIndex'::regclass`)
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if err := row.Scan(&t); err != nil {
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_, err = db.Exec(`CREATE INDEX BlockStatsDayIndex ON BlockStats (Day)`)
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}
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return err
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}
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func maxIndexedDay(db *sql.DB, table string) time.Time {
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var t time.Time
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row := db.QueryRow("SELECT MAX(Day) FROM " + table)
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err := row.Scan(&t)
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if err != nil {
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return time.Time{}
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}
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return t
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}
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func aggregateVersionSummary(db *sql.DB, since time.Time) (int64, error) {
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res, err := db.Exec(`INSERT INTO VersionSummary (
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SELECT
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DATE_TRUNC('day', Received) AS Day,
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SUBSTRING(Version FROM '^v\d.\d+') AS Ver,
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COUNT(*) AS Count
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FROM Reports
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WHERE
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DATE_TRUNC('day', Received) > $1
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AND DATE_TRUNC('day', Received) < DATE_TRUNC('day', NOW())
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AND Version like 'v0.%'
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GROUP BY Day, Ver
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);
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`, since)
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if err != nil {
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return 0, err
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}
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return res.RowsAffected()
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}
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func aggregateUserMovement(db *sql.DB) (int64, error) {
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rows, err := db.Query(`SELECT
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DATE_TRUNC('day', Received) AS Day,
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UniqueID
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FROM Reports
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WHERE
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DATE_TRUNC('day', Received) < DATE_TRUNC('day', NOW())
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AND Version like 'v0.%'
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ORDER BY Day
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`)
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if err != nil {
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return 0, err
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}
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defer rows.Close()
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firstSeen := make(map[string]time.Time)
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lastSeen := make(map[string]time.Time)
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var minTs time.Time
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minTs = minTs.In(time.UTC)
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for rows.Next() {
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var ts time.Time
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var id string
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if err := rows.Scan(&ts, &id); err != nil {
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return 0, err
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}
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if minTs.IsZero() {
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minTs = ts
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}
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if _, ok := firstSeen[id]; !ok {
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firstSeen[id] = ts
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}
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lastSeen[id] = ts
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}
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type sumRow struct {
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day time.Time
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added int
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removed int
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bounced int
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}
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var sumRows []sumRow
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for t := minTs; t.Before(time.Now().Truncate(24 * time.Hour)); t = t.AddDate(0, 0, 1) {
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var added, removed, bounced int
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old := t.Before(time.Now().AddDate(0, 0, -30))
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for id, first := range firstSeen {
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last := lastSeen[id]
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if first.Equal(t) && last.Equal(t) && old {
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bounced++
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continue
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}
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if first.Equal(t) {
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added++
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}
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if last == t && old {
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removed++
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}
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}
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sumRows = append(sumRows, sumRow{t, added, removed, bounced})
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}
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tx, err := db.Begin()
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if err != nil {
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return 0, err
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}
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if _, err := tx.Exec("DELETE FROM UserMovement"); err != nil {
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tx.Rollback()
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return 0, err
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}
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for _, r := range sumRows {
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if _, err := tx.Exec("INSERT INTO UserMovement (Day, Added, Removed, Bounced) VALUES ($1, $2, $3, $4)", r.day, r.added, r.removed, r.bounced); err != nil {
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tx.Rollback()
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return 0, err
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}
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}
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return int64(len(sumRows)), tx.Commit()
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}
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func aggregatePerformance(db *sql.DB, since time.Time) (int64, error) {
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res, err := db.Exec(`INSERT INTO Performance (
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SELECT
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DATE_TRUNC('day', Received) AS Day,
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AVG(TotFiles) As TotFiles,
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AVG(TotMiB) As TotMiB,
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AVG(SHA256Perf) As SHA256Perf,
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AVG(MemorySize) As MemorySize,
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AVG(MemoryUsageMiB) As MemoryUsageMiB
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FROM Reports
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WHERE
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DATE_TRUNC('day', Received) > $1
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AND DATE_TRUNC('day', Received) < DATE_TRUNC('day', NOW())
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AND Version like 'v0.%'
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GROUP BY Day
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);
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`, since)
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if err != nil {
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return 0, err
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}
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return res.RowsAffected()
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}
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func aggregateBlockStats(db *sql.DB, since time.Time) (int64, error) {
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// Filter out anything prior 0.14.41 as that has sum aggregations which
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// made no sense.
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res, err := db.Exec(`INSERT INTO BlockStats (
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SELECT
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DATE_TRUNC('day', Received) AS Day,
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COUNT(1) As Reports,
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SUM(BlocksTotal) AS Total,
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SUM(BlocksRenamed) AS Renamed,
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SUM(BlocksReused) AS Reused,
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SUM(BlocksPulled) AS Pulled,
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SUM(BlocksCopyOrigin) AS CopyOrigin,
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SUM(BlocksCopyOriginShifted) AS CopyOriginShifted,
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SUM(BlocksCopyElsewhere) AS CopyElsewhere
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FROM Reports
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WHERE
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DATE_TRUNC('day', Received) > $1
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AND DATE_TRUNC('day', Received) < DATE_TRUNC('day', NOW())
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AND ReportVersion = 3
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AND Version LIKE 'v0.%'
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AND Version NOT LIKE 'v0.14.40%'
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AND Version NOT LIKE 'v0.14.39%'
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AND Version NOT LIKE 'v0.14.38%'
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GROUP BY Day
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);
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`, since)
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if err != nil {
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return 0, err
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}
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|
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return res.RowsAffected()
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}
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|
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@ -0,0 +1,234 @@
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package main
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import (
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"regexp"
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"sort"
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"strconv"
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"strings"
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)
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type analytic struct {
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Key string
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Count int
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Percentage float64
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Items []analytic `json:",omitempty"`
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}
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type analyticList []analytic
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func (l analyticList) Less(a, b int) bool {
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if l[a].Key == "Others" {
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return true
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||||
}
|
||||
if l[b].Key == "Others" {
|
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return false
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||||
}
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return l[b].Count < l[a].Count // inverse
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}
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|
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func (l analyticList) Swap(a, b int) {
|
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l[a], l[b] = l[b], l[a]
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}
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|
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func (l analyticList) Len() int {
|
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return len(l)
|
||||
}
|
||||
|
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// Returns a list of frequency analytics for a given list of strings.
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func analyticsFor(ss []string, cutoff int) []analytic {
|
||||
m := make(map[string]int)
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t := 0
|
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for _, s := range ss {
|
||||
m[s]++
|
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t++
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||||
}
|
||||
|
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l := make([]analytic, 0, len(m))
|
||||
for k, c := range m {
|
||||
l = append(l, analytic{
|
||||
Key: k,
|
||||
Count: c,
|
||||
Percentage: 100 * float64(c) / float64(t),
|
||||
})
|
||||
}
|
||||
|
||||
sort.Sort(analyticList(l))
|
||||
|
||||
if cutoff > 0 && len(l) > cutoff {
|
||||
c := 0
|
||||
for _, i := range l[cutoff:] {
|
||||
c += i.Count
|
||||
}
|
||||
l = append(l[:cutoff], analytic{
|
||||
Key: "Others",
|
||||
Count: c,
|
||||
Percentage: 100 * float64(c) / float64(t),
|
||||
})
|
||||
}
|
||||
|
||||
return l
|
||||
}
|
||||
|
||||
// Find the points at which certain penetration levels are met
|
||||
func penetrationLevels(as []analytic, points []float64) []analytic {
|
||||
sort.Slice(as, func(a, b int) bool {
|
||||
return versionLess(as[b].Key, as[a].Key)
|
||||
})
|
||||
|
||||
var res []analytic
|
||||
|
||||
idx := 0
|
||||
sum := 0.0
|
||||
for _, a := range as {
|
||||
sum += a.Percentage
|
||||
if sum >= points[idx] {
|
||||
a.Count = int(points[idx])
|
||||
a.Percentage = sum
|
||||
res = append(res, a)
|
||||
idx++
|
||||
if idx == len(points) {
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
return res
|
||||
}
|
||||
|
||||
func statsForInts(data []int) [4]float64 {
|
||||
var res [4]float64
|
||||
if len(data) == 0 {
|
||||
return res
|
||||
}
|
||||
|
||||
sort.Ints(data)
|
||||
res[0] = float64(data[int(float64(len(data))*0.05)])
|
||||
res[1] = float64(data[len(data)/2])
|
||||
res[2] = float64(data[int(float64(len(data))*0.95)])
|
||||
res[3] = float64(data[len(data)-1])
|
||||
return res
|
||||
}
|
||||
|
||||
func statsForFloats(data []float64) [4]float64 {
|
||||
var res [4]float64
|
||||
if len(data) == 0 {
|
||||
return res
|
||||
}
|
||||
|
||||
sort.Float64s(data)
|
||||
res[0] = data[int(float64(len(data))*0.05)]
|
||||
res[1] = data[len(data)/2]
|
||||
res[2] = data[int(float64(len(data))*0.95)]
|
||||
res[3] = data[len(data)-1]
|
||||
return res
|
||||
}
|
||||
|
||||
func group(by func(string) string, as []analytic, perGroup int) []analytic {
|
||||
var res []analytic
|
||||
|
||||
next:
|
||||
for _, a := range as {
|
||||
group := by(a.Key)
|
||||
for i := range res {
|
||||
if res[i].Key == group {
|
||||
res[i].Count += a.Count
|
||||
res[i].Percentage += a.Percentage
|
||||
if len(res[i].Items) < perGroup {
|
||||
res[i].Items = append(res[i].Items, a)
|
||||
}
|
||||
continue next
|
||||
}
|
||||
}
|
||||
res = append(res, analytic{
|
||||
Key: group,
|
||||
Count: a.Count,
|
||||
Percentage: a.Percentage,
|
||||
Items: []analytic{a},
|
||||
})
|
||||
}
|
||||
|
||||
sort.Sort(analyticList(res))
|
||||
return res
|
||||
}
|
||||
|
||||
func byVersion(s string) string {
|
||||
parts := strings.Split(s, ".")
|
||||
if len(parts) >= 2 {
|
||||
return strings.Join(parts[:2], ".")
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
func byPlatform(s string) string {
|
||||
parts := strings.Split(s, "-")
|
||||
if len(parts) >= 2 {
|
||||
return parts[0]
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
var numericGoVersion = regexp.MustCompile(`^go[0-9]\.[0-9]+`)
|
||||
|
||||
func byCompiler(s string) string {
|
||||
if m := numericGoVersion.FindString(s); m != "" {
|
||||
return m
|
||||
}
|
||||
return "Other"
|
||||
}
|
||||
|
||||
func versionLess(a, b string) bool {
|
||||
arel, apre := versionParts(a)
|
||||
brel, bpre := versionParts(b)
|
||||
|
||||
minlen := len(arel)
|
||||
if l := len(brel); l < minlen {
|
||||
minlen = l
|
||||
}
|
||||
|
||||
for i := 0; i < minlen; i++ {
|
||||
if arel[i] != brel[i] {
|
||||
return arel[i] < brel[i]
|
||||
}
|
||||
}
|
||||
|
||||
// Longer version is newer, when the preceding parts are equal
|
||||
if len(arel) != len(brel) {
|
||||
return len(arel) < len(brel)
|
||||
}
|
||||
|
||||
if apre != bpre {
|
||||
// "(+dev)" versions are ahead
|
||||
if apre == plusStr {
|
||||
return false
|
||||
}
|
||||
if bpre == plusStr {
|
||||
return true
|
||||
}
|
||||
return apre < bpre
|
||||
}
|
||||
|
||||
// don't actually care how the prerelease stuff compares for our purposes
|
||||
return false
|
||||
}
|
||||
|
||||
// Split a version as returned from transformVersion into parts.
|
||||
// "1.2.3-beta.2" -> []int{1, 2, 3}, "beta.2"}
|
||||
func versionParts(v string) ([]int, string) {
|
||||
parts := strings.SplitN(v[1:], " ", 2) // " (+dev)" versions
|
||||
if len(parts) == 1 {
|
||||
parts = strings.SplitN(parts[0], "-", 2) // "-rc.1" type versions
|
||||
}
|
||||
fields := strings.Split(parts[0], ".")
|
||||
|
||||
release := make([]int, len(fields))
|
||||
for i, s := range fields {
|
||||
v, _ := strconv.Atoi(s)
|
||||
release[i] = v
|
||||
}
|
||||
|
||||
var prerelease string
|
||||
if len(parts) > 1 {
|
||||
prerelease = parts[1]
|
||||
}
|
||||
|
||||
return release, prerelease
|
||||
}
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
package main
|
||||
|
||||
import "testing"
|
||||
|
||||
func TestCompilerRe(t *testing.T) {
|
||||
tests := [][3]string{
|
||||
{`syncthing v0.11.0 (xgcc (Ubuntu 4.9.3-0ubuntu4) 4.9.3 linux-amd64 default) niklas@Niklas-Netbook 2015-04-26 13:15:08 UTC`, "xgcc (Ubuntu 4.9.3-0ubuntu4) 4.9.3", "niklas@Niklas-Netbook"},
|
||||
{`syncthing v0.12.0-rc5 "Beryllium Bedbug" (go1.4.2 linux-arm android) unknown-user@Felix-T420 2015-10-22 18:32:15 UTC`, "go1.4.2", "unknown-user@Felix-T420"},
|
||||
{`syncthing v0.13.0-beta.0+39-ge267bf3 "Copper Cockroach" (go1.4.2 linux-amd64) portage@slevermann.de 2016-01-20 08:41:52 UTC`, "go1.4.2", "portage@slevermann.de"},
|
||||
}
|
||||
|
||||
for _, tc := range tests {
|
||||
m := compilerRe.FindStringSubmatch(tc[0])
|
||||
if len(m) != 3 {
|
||||
t.Errorf("Regexp didn't match %q", tc[0])
|
||||
continue
|
||||
}
|
||||
if m[1] != tc[1] {
|
||||
t.Errorf("Compiler %q != %q", m[1], tc[1])
|
||||
}
|
||||
if m[2] != tc[2] {
|
||||
t.Errorf("Builder %q != %q", m[2], tc[2])
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,122 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"strings"
|
||||
)
|
||||
|
||||
type NumberType int
|
||||
|
||||
const (
|
||||
NumberMetric NumberType = iota
|
||||
NumberBinary
|
||||
NumberDuration
|
||||
)
|
||||
|
||||
func number(ntype NumberType, v float64) string {
|
||||
if ntype == NumberDuration {
|
||||
return duration(v)
|
||||
} else if ntype == NumberBinary {
|
||||
return binary(v)
|
||||
} else {
|
||||
return metric(v)
|
||||
}
|
||||
}
|
||||
|
||||
type suffix struct {
|
||||
Suffix string
|
||||
Multiplier float64
|
||||
}
|
||||
|
||||
var metricSuffixes = []suffix{
|
||||
{"G", 1e9},
|
||||
{"M", 1e6},
|
||||
{"k", 1e3},
|
||||
}
|
||||
|
||||
var binarySuffixes = []suffix{
|
||||
{"Gi", 1 << 30},
|
||||
{"Mi", 1 << 20},
|
||||
{"Ki", 1 << 10},
|
||||
}
|
||||
|
||||
var durationSuffix = []suffix{
|
||||
{"year", 365 * 24 * 60 * 60},
|
||||
{"month", 30 * 24 * 60 * 60},
|
||||
{"day", 24 * 60 * 60},
|
||||
{"hour", 60 * 60},
|
||||
{"minute", 60},
|
||||
{"second", 1},
|
||||
}
|
||||
|
||||
func metric(v float64) string {
|
||||
return withSuffix(v, metricSuffixes, false)
|
||||
}
|
||||
|
||||
func binary(v float64) string {
|
||||
return withSuffix(v, binarySuffixes, false)
|
||||
}
|
||||
|
||||
func duration(v float64) string {
|
||||
return withSuffix(v, durationSuffix, true)
|
||||
}
|
||||
|
||||
func withSuffix(v float64, ps []suffix, pluralize bool) string {
|
||||
for _, p := range ps {
|
||||
if v >= p.Multiplier {
|
||||
suffix := p.Suffix
|
||||
if pluralize && v/p.Multiplier != 1.0 {
|
||||
suffix += "s"
|
||||
}
|
||||
// If the number only has decimal zeroes, strip em off.
|
||||
num := strings.TrimRight(strings.TrimRight(fmt.Sprintf("%.1f", v/p.Multiplier), "0"), ".")
|
||||
return fmt.Sprintf("%s %s", num, suffix)
|
||||
}
|
||||
}
|
||||
return strings.TrimRight(strings.TrimRight(fmt.Sprintf("%.1f", v), "0"), ".")
|
||||
}
|
||||
|
||||
// commatize returns a number with sep as thousands separators. Handles
|
||||
// integers and plain floats.
|
||||
func commatize(sep, s string) string {
|
||||
// If no dot, don't do anything.
|
||||
if !strings.ContainsRune(s, '.') {
|
||||
return s
|
||||
}
|
||||
var b bytes.Buffer
|
||||
fs := strings.SplitN(s, ".", 2)
|
||||
|
||||
l := len(fs[0])
|
||||
for i := range fs[0] {
|
||||
b.Write([]byte{s[i]})
|
||||
if i < l-1 && (l-i)%3 == 1 {
|
||||
b.WriteString(sep)
|
||||
}
|
||||
}
|
||||
|
||||
if len(fs) > 1 && len(fs[1]) > 0 {
|
||||
b.WriteString(".")
|
||||
b.WriteString(fs[1])
|
||||
}
|
||||
|
||||
return b.String()
|
||||
}
|
||||
|
||||
func proportion(m map[string]int, count int) float64 {
|
||||
total := 0
|
||||
isMax := true
|
||||
for _, n := range m {
|
||||
total += n
|
||||
if n > count {
|
||||
isMax = false
|
||||
}
|
||||
}
|
||||
pct := (100 * float64(count)) / float64(total)
|
||||
// To avoid rounding errors in the template, surpassing 100% and breaking
|
||||
// the progress bars.
|
||||
if isMax && len(m) > 1 && count != total {
|
||||
pct -= 0.01
|
||||
}
|
||||
return pct
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
Binary file not shown.
|
After Width: | Height: | Size: 6.4 KiB |
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
Binary file not shown.
Binary file not shown.
|
After Width: | Height: | Size: 61 KiB |
Binary file not shown.
Binary file not shown.
|
|
@ -0,0 +1,631 @@
|
|||
<!DOCTYPE html>
|
||||
<!--
|
||||
Copyright (C) 2014 Jakob Borg and other contributors. All rights reserved.
|
||||
Use of this source code is governed by an MIT-style license that can be
|
||||
found in the LICENSE file.
|
||||
-->
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<meta http-equiv="X-UA-Compatible" content="IE=edge">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<meta name="description" content="">
|
||||
<meta name="author" content="">
|
||||
<link rel="shortcut icon" href="static/assets/img/favicon.png">
|
||||
|
||||
<title>Syncthing Usage Reports</title>
|
||||
<link href="static/bootstrap/css/bootstrap.min.css" rel="stylesheet">
|
||||
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
|
||||
<script type="text/javascript" src="static/bootstrap/js/bootstrap.min.js"></script>
|
||||
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?libraries=visualization"></script>
|
||||
<style type="text/css">
|
||||
body {
|
||||
margin: 40px;
|
||||
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
|
||||
}
|
||||
tr.main td {
|
||||
font-weight: bold;
|
||||
}
|
||||
tr.child td.first {
|
||||
padding-left: 2em;
|
||||
}
|
||||
.progress-bar {
|
||||
overflow:hidden;
|
||||
white-space:nowrap;
|
||||
text-overflow: ellipsis;
|
||||
}
|
||||
</style>
|
||||
<script type="text/javascript"
|
||||
src="https://www.google.com/jsapi?autoload={
|
||||
'modules':[{
|
||||
'name':'visualization',
|
||||
'version':'1',
|
||||
'packages':['corechart']
|
||||
}]
|
||||
}"></script>
|
||||
|
||||
<script type="text/javascript">
|
||||
google.setOnLoadCallback(drawVersionChart);
|
||||
google.setOnLoadCallback(drawMovementChart);
|
||||
google.setOnLoadCallback(drawBlockStatsChart);
|
||||
google.setOnLoadCallback(drawPerformanceCharts);
|
||||
google.setOnLoadCallback(drawHeatMap);
|
||||
|
||||
function drawVersionChart() {
|
||||
var jsonData = $.ajax({url: "summary.json", dataType:"json", async: false}).responseText;
|
||||
var rows = JSON.parse(jsonData);
|
||||
|
||||
var data = new google.visualization.DataTable();
|
||||
data.addColumn('date', 'Day');
|
||||
for (var i = 1; i < rows[0].length; i++){
|
||||
data.addColumn('number', rows[0][i]);
|
||||
}
|
||||
for (var i = 1; i < rows.length; i++){
|
||||
rows[i][0] = new Date(rows[i][0]);
|
||||
data.addRow(rows[i]);
|
||||
};
|
||||
|
||||
var options = {
|
||||
legend: { position: 'bottom', alignment: 'center' },
|
||||
isStacked: true,
|
||||
colors: ['rgb(102,194,165)','rgb(252,141,98)','rgb(141,160,203)','rgb(231,138,195)','rgb(166,216,84)','rgb(255,217,47)'],
|
||||
chartArea: {left: 80, top: 20, width: '1020', height: '300'},
|
||||
};
|
||||
|
||||
var chart = new google.visualization.AreaChart(document.getElementById('versionChart'));
|
||||
chart.draw(data, options);
|
||||
}
|
||||
|
||||
function drawMovementChart() {
|
||||
var jsonData = $.ajax({url: "movement.json", dataType:"json", async: false}).responseText;
|
||||
var rows = JSON.parse(jsonData);
|
||||
|
||||
var data = new google.visualization.DataTable();
|
||||
data.addColumn('date', 'Day');
|
||||
for (var i = 1; i < rows[0].length; i++){
|
||||
data.addColumn('number', rows[0][i]);
|
||||
}
|
||||
|
||||
for (var i = 1; i < rows.length; i++){
|
||||
rows[i][0] = new Date(rows[i][0]);
|
||||
if (rows[i][1] > 500) {
|
||||
rows[i][1] = null;
|
||||
}
|
||||
if (rows[i][2] < -500) {
|
||||
rows[i][2] = null;
|
||||
}
|
||||
data.addRow(rows[i]);
|
||||
};
|
||||
|
||||
var options = {
|
||||
legend: { position: 'bottom', alignment: 'center' },
|
||||
colors: ['rgb(102,194,165)','rgb(252,141,98)','rgb(141,160,203)','rgb(231,138,195)','rgb(166,216,84)','rgb(255,217,47)'],
|
||||
chartArea: {left: 80, top: 20, width: '1020', height: '300'},
|
||||
};
|
||||
|
||||
var chart = new google.visualization.AreaChart(document.getElementById('movementChart'));
|
||||
chart.draw(data, options);
|
||||
}
|
||||
|
||||
function formatGibibytes(gibibytes, decimals) {
|
||||
if(gibibytes == 0) return '0 GiB';
|
||||
var k = 1024,
|
||||
dm = decimals || 2,
|
||||
sizes = ['GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'],
|
||||
i = Math.floor(Math.log(gibibytes) / Math.log(k));
|
||||
if (i < 0) {
|
||||
sizes = 'MiB';
|
||||
} else {
|
||||
sizes = sizes[i];
|
||||
}
|
||||
return parseFloat((gibibytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes;
|
||||
}
|
||||
|
||||
|
||||
function drawBlockStatsChart() {
|
||||
var jsonData = $.ajax({url: "blockstats.json", dataType:"json", async: false}).responseText;
|
||||
var rows = JSON.parse(jsonData);
|
||||
|
||||
var data = new google.visualization.DataTable();
|
||||
data.addColumn('date', 'Day');
|
||||
for (var i = 1; i < rows[0].length; i++){
|
||||
data.addColumn('number', rows[0][i]);
|
||||
}
|
||||
|
||||
var totals = [0, 0, 0, 0, 0, 0];
|
||||
for (var i = 1; i < rows.length; i++){
|
||||
rows[i][0] = new Date(rows[i][0]);
|
||||
for (var j = 2; j < rows[i].length; j++) {
|
||||
totals[j-2] += rows[i][j];
|
||||
}
|
||||
data.addRow(rows[i]);
|
||||
};
|
||||
|
||||
var totalTotals = totals.reduce(function(a, b) { return a + b; }, 0);
|
||||
|
||||
if (totalTotals > 0) {
|
||||
var content = "<table class='table'>\n"
|
||||
for (var j = 2; j < rows[0].length; j++) {
|
||||
content += "<tr><td><b>" + rows[0][j].replace(' (GiB)', '') + "</b></td><td>" + formatGibibytes(totals[j-2].toFixed(2)) + " (" + ((100*totals[j-2])/totalTotals).toFixed(2) +"%)</td></tr>\n";
|
||||
}
|
||||
content += "</table>";
|
||||
document.getElementById("data-to-date").innerHTML = content;
|
||||
} else {
|
||||
// No data, hide it.
|
||||
document.getElementById("block-stats").outerHTML = "";
|
||||
return;
|
||||
}
|
||||
|
||||
var options = {
|
||||
focusTarget: 'category',
|
||||
vAxes: {0: {}, 1: {}},
|
||||
series: {0: {type: 'line', targetAxisIndex:1}},
|
||||
isStacked: true,
|
||||
legend: {position: 'none'},
|
||||
colors: ['rgb(102,194,165)','rgb(252,141,98)','rgb(141,160,203)','rgb(231,138,195)','rgb(166,216,84)','rgb(255,217,47)'],
|
||||
chartArea: {left: 80, top: 20, width: '1020', height: '300'},
|
||||
};
|
||||
|
||||
var chart = new google.visualization.AreaChart(document.getElementById('blockStatsChart'));
|
||||
chart.draw(data, options);
|
||||
}
|
||||
|
||||
function drawPerformanceCharts() {
|
||||
var jsonData = $.ajax({url: "/performance.json", dataType:"json", async: false}).responseText;
|
||||
var rows = JSON.parse(jsonData);
|
||||
for (var i = 1; i < rows.length; i++){
|
||||
rows[i][0] = new Date(rows[i][0]);
|
||||
}
|
||||
|
||||
drawChart(rows, 1, 'Total Number of Files', 'totFilesChart', 1e6, 1);
|
||||
drawChart(rows, 2, 'Total Folder Size (GiB)', 'totMiBChart', 1e6, 1024);
|
||||
drawChart(rows, 3, 'Hash Performance (MiB/s)', 'hashPerfChart', 1000, 1);
|
||||
drawChart(rows, 4, 'System RAM Size (GiB)', 'memSizeChart', 1e6, 1024);
|
||||
drawChart(rows, 5, 'Memory Usage (MiB)', 'memUsageChart', 250, 1);
|
||||
}
|
||||
|
||||
function drawChart(rows, index, title, id, cutoff, divisor) {
|
||||
var data = new google.visualization.DataTable();
|
||||
data.addColumn('date', 'Day');
|
||||
data.addColumn('number', title);
|
||||
|
||||
var row;
|
||||
for (var i = 1; i < rows.length; i++){
|
||||
row = [rows[i][0], rows[i][index] / divisor];
|
||||
if (row[1] > cutoff) {
|
||||
row[1] = null;
|
||||
}
|
||||
data.addRow(row);
|
||||
}
|
||||
|
||||
var options = {
|
||||
legend: { position: 'bottom', alignment: 'center' },
|
||||
colors: ['rgb(102,194,165)','rgb(252,141,98)','rgb(141,160,203)','rgb(231,138,195)','rgb(166,216,84)','rgb(255,217,47)'],
|
||||
chartArea: {left: 80, top: 20, width: '1020', height: '300'},
|
||||
vAxes: {0: {minValue: 0}},
|
||||
};
|
||||
|
||||
var chart = new google.visualization.LineChart(document.getElementById(id));
|
||||
chart.draw(data, options);
|
||||
}
|
||||
|
||||
var locations = [];
|
||||
{{range $location, $weight := .locations}}
|
||||
locations.push({location: new google.maps.LatLng({{- $location.Latitude -}}, {{- $location.Longitude -}}), weight: {{- $weight -}}});
|
||||
{{- end}}
|
||||
|
||||
function drawHeatMap() {
|
||||
if (locations.length == 0) {
|
||||
return;
|
||||
}
|
||||
var mapBounds = new google.maps.LatLngBounds();
|
||||
var map = new google.maps.Map(document.getElementById('map'), {
|
||||
zoom: 1,
|
||||
mapTypeId: google.maps.MapTypeId.ROADMAP
|
||||
});
|
||||
var heatmap = new google.maps.visualization.HeatmapLayer({
|
||||
data: locations
|
||||
});
|
||||
heatmap.set('radius', 10);
|
||||
heatmap.set('maxIntensity', 20);
|
||||
heatmap.set('gradient', [
|
||||
'rgba(0, 255, 255, 0)',
|
||||
'rgba(0, 255, 255, 1)',
|
||||
'rgba(0, 191, 255, 1)',
|
||||
'rgba(0, 127, 255, 1)',
|
||||
'rgba(0, 63, 255, 1)',
|
||||
'rgba(0, 0, 255, 1)',
|
||||
'rgba(0, 0, 223, 1)',
|
||||
'rgba(0, 0, 191, 1)',
|
||||
'rgba(0, 0, 159, 1)',
|
||||
'rgba(0, 0, 127, 1)',
|
||||
'rgba(63, 0, 91, 1)',
|
||||
'rgba(127, 0, 63, 1)',
|
||||
'rgba(191, 0, 31, 1)',
|
||||
'rgba(255, 0, 0, 1)'
|
||||
]);
|
||||
heatmap.setMap(map);
|
||||
for (var x = 0; x < locations.length; x++) {
|
||||
mapBounds.extend(locations[x].location);
|
||||
}
|
||||
map.fitBounds(mapBounds);
|
||||
if (locations.length == 1) {
|
||||
map.setZoom(13);
|
||||
}
|
||||
}
|
||||
</script>
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div class="container">
|
||||
<div class="row">
|
||||
<div class="col-md-12">
|
||||
<h1>Syncthing Usage Data</h1>
|
||||
|
||||
<h4 id="active-users">Active Users per Day and Version</h4>
|
||||
<p>
|
||||
This is the total number of unique users with reporting enabled, per day. Area color represents the major version.
|
||||
</p>
|
||||
<div class="img-thumbnail" id="versionChart" style="width: 1130px; height: 400px; padding: 10px;"></div>
|
||||
|
||||
<h4 id="joining-leaving">Users Joining and Leaving per Day</h4>
|
||||
<p>
|
||||
This is the total number of unique users joining and leaving per day. A user is counted as "joined" on first the day their unique ID is seen, and as "left" on the last day the unique ID was seen before a two weeks or longer absence. "Bounced" refers to users who joined and left on the same day.
|
||||
</p>
|
||||
<div class="img-thumbnail" id="movementChart" style="width: 1130px; height: 400px; padding: 10px;"></div>
|
||||
<p class="text-muted">
|
||||
Reappearance of users cause the "left" data to shrink retroactively.
|
||||
</p>
|
||||
<div id="block-stats">
|
||||
<h4>Data Transfers per Day</h4>
|
||||
<p>
|
||||
This is total data transferred per day. Also shows how much data was saved (not transferred) by each of the methods syncthing uses.
|
||||
</p>
|
||||
<div class="img-thumbnail" id="blockStatsChart" style="width: 1130px; height: 400px; padding: 10px;"></div>
|
||||
<h4 id="totals-to-date">Totals to date</h4>
|
||||
<p id="data-to-date">
|
||||
No data
|
||||
</p>
|
||||
</div>
|
||||
|
||||
<h4 id="metrics">Usage Metrics</h4>
|
||||
<p>
|
||||
This is the aggregated usage report data for the last 24 hours. Data based on <b>{{.nodes}}</b> devices that have reported in.
|
||||
</p>
|
||||
|
||||
{{if .locations}}
|
||||
<div class="img-thumbnail" id="map" style="width: 1130px; height: 400px; padding: 10px;"></div>
|
||||
<p class="text-muted">
|
||||
Heatmap max intensity is capped at 20 reports within a location.
|
||||
</p>
|
||||
<div class="panel panel-default">
|
||||
<div class="panel-heading">
|
||||
<h4 class="panel-title">
|
||||
<a data-toggle="collapse" href="#collapseTwo">Break down per country</a>
|
||||
</h4>
|
||||
</div>
|
||||
<div id="collapseTwo" class="panel-collapse collapse">
|
||||
<div class="panel-body">
|
||||
<div class="row">
|
||||
<div class="col-md-6">
|
||||
<table class="table table-striped">
|
||||
<tbody>
|
||||
{{range .contries | slice 2 1}}
|
||||
<tr>
|
||||
<td style="width: 45%">{{.Key}}</td>
|
||||
<td style="width: 5%" class="text-right">{{if ge .Pct 10.0}}{{.Pct | printf "%.0f"}}{{else if ge .Pct 1.0}}{{.Pct | printf "%.01f"}}{{else}}{{.Pct | printf "%.02f"}}{{end}}%</td>
|
||||
<td style="width: 5%" class="text-right">{{.Count}}</td>
|
||||
<td>
|
||||
<div class="progress-bar" role="progressbar" aria-valuenow="{{.Pct | printf "%.02f"}}" aria-valuemin="0" aria-valuemax="100" style="width: {{.Pct | printf "%.02f"}}%; height:20px"></div>
|
||||
</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
<div class="col-md-6">
|
||||
<table class="table table-striped">
|
||||
<tbody>
|
||||
{{range .contries | slice 2 2}}
|
||||
<tr>
|
||||
<td style="width: 45%">{{.Key}}</td>
|
||||
<td style="width: 5%" class="text-right">{{if ge .Pct 10.0}}{{.Pct | printf "%.0f"}}{{else if ge .Pct 1.0}}{{.Pct | printf "%.01f"}}{{else}}{{.Pct | printf "%.02f"}}{{end}}%</td>
|
||||
<td style="width: 5%" class="text-right">{{.Count}}</td>
|
||||
<td>
|
||||
<div class="progress-bar" role="progressbar" aria-valuenow="{{.Pct | printf "%.02f"}}" aria-valuemin="0" aria-valuemax="100" style="width: {{.Pct | printf "%.02f"}}%; height:20px"></div>
|
||||
</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
{{end}}
|
||||
<table class="table table-striped">
|
||||
<thead>
|
||||
<tr>
|
||||
<th></th>
|
||||
<th colspan="4" class="text-center">
|
||||
<a href="https://en.wikipedia.org/wiki/Percentile">Percentile</a>
|
||||
</th>
|
||||
</tr>
|
||||
<tr>
|
||||
<th></th>
|
||||
<th class="text-right">5%</th>
|
||||
<th class="text-right">50%</th>
|
||||
<th class="text-right">95%</th>
|
||||
<th class="text-right">100%</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
{{range .categories}}
|
||||
<tr>
|
||||
<td>{{.Descr}}</td>
|
||||
<td class="text-right">{{index .Values 0 | number .Type | commatize " "}}{{.Unit}}</td>
|
||||
<td class="text-right">{{index .Values 1 | number .Type | commatize " "}}{{.Unit}}</td>
|
||||
<td class="text-right">{{index .Values 2 | number .Type | commatize " "}}{{.Unit}}</td>
|
||||
<td class="text-right">{{index .Values 3 | number .Type | commatize " "}}{{.Unit}}</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="row">
|
||||
<div class="col-md-6">
|
||||
<table class="table table-striped">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Version</th><th class="text-right">Devices</th><th class="text-right">Share</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
{{range .versions}}
|
||||
{{if gt .Percentage 0.5}}
|
||||
<tr class="main">
|
||||
<td>{{.Key}}</td>
|
||||
<td class="text-right">{{.Count}}</td>
|
||||
<td class="text-right">{{.Percentage | printf "%.01f"}}%</td>
|
||||
</tr>
|
||||
{{range .Items}}
|
||||
<tr class="child">
|
||||
<td class="first">{{.Key}}</td>
|
||||
<td class="text-right">{{.Count}}</td>
|
||||
<td class="text-right">{{.Percentage | printf "%.01f"}}%</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
{{end}}
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
<table class="table table-striped">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Penetration Level</th>
|
||||
<th>Version</th>
|
||||
<th class="text-right">Actual</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
{{range .versionPenetrations}}
|
||||
<tr>
|
||||
<td>{{.Count}}%</td>
|
||||
<td>≥ {{.Key}}</td>
|
||||
<td class="text-right">{{.Percentage | printf "%.01f"}}%</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
|
||||
<div class="col-md-6">
|
||||
<table class="table table-striped">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Platform</th>
|
||||
<th class="text-right">Devices</th>
|
||||
<th class="text-right">Share</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
{{range .platforms}}
|
||||
<tr class="main">
|
||||
<td>{{.Key}}</td>
|
||||
<td class="text-right">{{.Count}}</td>
|
||||
<td class="text-right">{{.Percentage | printf "%.01f"}}%</td>
|
||||
</tr>
|
||||
{{range .Items}}
|
||||
<tr class="child">
|
||||
<td class="first">{{.Key}}</td>
|
||||
<td class="text-right">{{.Count}}</td>
|
||||
<td class="text-right">{{.Percentage | printf "%.01f"}}%</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
<div class="row">
|
||||
|
||||
<div class="col-md-6">
|
||||
<table class="table table-striped">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Compiler</th>
|
||||
<th class="text-right">Devices</th>
|
||||
<th class="text-right">Share</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
{{range .compilers}}
|
||||
<tr class="main">
|
||||
<td>{{.Key}}</td>
|
||||
<td class="text-right">{{.Count}}</td>
|
||||
<td class="text-right">{{.Percentage | printf "%.01f"}}%</td>
|
||||
</tr>
|
||||
{{range .Items}}
|
||||
<tr class="child">
|
||||
<td class="first">{{.Key}}</td>
|
||||
<td class="text-right">{{.Count}}</td>
|
||||
<td class="text-right">{{.Percentage | printf "%.01f"}}%</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
|
||||
<div class="col-md-6">
|
||||
<table class="table table-striped">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Builder</th>
|
||||
<th class="text-right">Devices</th>
|
||||
<th class="text-right">Share</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
{{range .builders}}
|
||||
<tr>
|
||||
<td>{{.Key}}</td>
|
||||
<td class="text-right">{{.Count}}</td>
|
||||
<td class="text-right">{{.Percentage | printf "%.01f"}}%</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="row">
|
||||
<div class="col-md-12">
|
||||
<h4 id="features">Feature Usage</h4>
|
||||
<p>
|
||||
The following lists feature usage. Some features are reported per report, some are per sum of units within report (eg. devices with static addresses among all known devices per report).
|
||||
Currently there are <b>{{.versionNodes.v2}}</b> devices reporting for version 2 and <b>{{.versionNodes.v3}}</b> for version 3.
|
||||
</p>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
|
||||
<div class="row">
|
||||
{{$i := counter}}
|
||||
{{range $featureName := .featureOrder}}
|
||||
{{$featureValues := index $.features $featureName }}
|
||||
{{if $i.DrawTwoDivider}}
|
||||
</div>
|
||||
<div class="row">
|
||||
{{end}}
|
||||
{{ $i.Increment }}
|
||||
<div class="col-md-6">
|
||||
<table class="table table-striped">
|
||||
<thead><tr>
|
||||
<th>{{$featureName}} Features</th><th colspan="2" class="text-center">Usage</th>
|
||||
</tr></thead>
|
||||
<tbody>
|
||||
{{range $featureValues}}
|
||||
<tr>
|
||||
<td style="width: 50%">{{.Key}} ({{.Version}})</td>
|
||||
<td style="width: 10%" class="text-right">{{if ge .Pct 10.0}}{{.Pct | printf "%.0f"}}{{else if ge .Pct 1.0}}{{.Pct | printf "%.01f"}}{{else}}{{.Pct | printf "%.02f"}}{{end}}%</td>
|
||||
<td style="width: 40%" {{if lt .Pct 5.0}}data-toggle="tooltip" title='{{.Count}}'{{end}}>
|
||||
<div class="progress-bar" role="progressbar" aria-valuenow="{{.Pct | printf "%.02f"}}" aria-valuemin="0" aria-valuemax="100" style="width: {{.Pct | printf "%.02f"}}%; height:20px" {{if ge .Pct 5.0}}data-toggle="tooltip" title='{{.Count}}'{{end}}></div>
|
||||
</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
{{end}}
|
||||
</div>
|
||||
|
||||
<div class="row">
|
||||
<div class="col-md-12">
|
||||
<h4 id="features">Feature Group Usage</h4>
|
||||
<p>
|
||||
The following lists feature usage groups, which might include multiple occourances of a feature use per report.
|
||||
</p>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="row">
|
||||
{{$i := counter}}
|
||||
{{range $featureName := .featureOrder}}
|
||||
{{$featureValues := index $.featureGroups $featureName }}
|
||||
{{if $i.DrawTwoDivider}}
|
||||
</div>
|
||||
<div class="row">
|
||||
{{end}}
|
||||
{{ $i.Increment }}
|
||||
<div class="col-md-6">
|
||||
<table class="table table-striped">
|
||||
<thead><tr>
|
||||
<th>{{$featureName}} Group Features</th><th colspan="2" class="text-center">Usage</th>
|
||||
</tr></thead>
|
||||
<tbody>
|
||||
{{range $featureValues}}
|
||||
{{$counts := .Counts}}
|
||||
<tr>
|
||||
<td style="width: 50%">
|
||||
<div data-toggle="tooltip" title='{{range $key, $value := .Counts}}{{$key}} ({{$value | proportion $counts | printf "%.02f"}}% - {{$value}})</br>{{end}}'>
|
||||
{{.Key}} ({{.Version}})
|
||||
</div>
|
||||
</td>
|
||||
<td style="width: 50%">
|
||||
<div class="progress" role="progressbar" style="width: 100%">
|
||||
{{$j := counter}}
|
||||
{{range $key, $value := .Counts}}
|
||||
{{with $valuePct := $value | proportion $counts}}
|
||||
<div class="progress-bar {{ $j.Current | progressBarClassByIndex }}" style='width: {{$valuePct | printf "%.02f"}}%' data-toggle="tooltip" title='{{$key}} ({{$valuePct | printf "%.02f"}}% - {{$value}})'>
|
||||
{{if ge $valuePct 30.0}}{{$key}}{{end}}
|
||||
</div>
|
||||
{{end}}
|
||||
{{ $j.Increment }}
|
||||
{{end}}
|
||||
</div>
|
||||
</td>
|
||||
</tr>
|
||||
{{end}}
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
{{end}}
|
||||
</div>
|
||||
<div class="row">
|
||||
<div class="col-md-12">
|
||||
<h1 id="performance-charts">Historical Performance Data</h1>
|
||||
<p>These charts are all the average of the corresponding metric, for the entire population of a given day.</p>
|
||||
|
||||
<h4 id="hash-performance">Hash Performance (MiB/s)</h4>
|
||||
<div class="img-thumbnail" id="hashPerfChart" style="width: 1130px; height: 400px; padding: 10px;"></div>
|
||||
|
||||
<h4 id="memory-usage">Memory Usage (MiB)</h4>
|
||||
<div class="img-thumbnail" id="memUsageChart" style="width: 1130px; height: 400px; padding: 10px;"></div>
|
||||
|
||||
<h4 id="total-files">Total Number of Files</h4>
|
||||
<div class="img-thumbnail" id="totFilesChart" style="width: 1130px; height: 400px; padding: 10px;"></div>
|
||||
|
||||
<h4 id="total-size">Total Folder Size (GiB)</h4>
|
||||
<div class="img-thumbnail" id="totMiBChart" style="width: 1130px; height: 400px; padding: 10px;"></div>
|
||||
|
||||
<h4 id="system-ram">System RAM Size (GiB)</h4>
|
||||
<div class="img-thumbnail" id="memSizeChart" style="width: 1130px; height: 400px; padding: 10px;"></div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<hr>
|
||||
<p>
|
||||
This product includes GeoLite2 data created by MaxMind, available from
|
||||
<a href="http://www.maxmind.com">http://www.maxmind.com</a>.
|
||||
</p>
|
||||
<script type="text/javascript">
|
||||
$('[data-toggle="tooltip"]').tooltip({html:true});
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
Copyright (c) 2011-2013, 'pq' Contributors
|
||||
Portions Copyright (C) 2011 Blake Mizerany
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
|
@ -0,0 +1,756 @@
|
|||
package pq
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"database/sql"
|
||||
"database/sql/driver"
|
||||
"encoding/hex"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
var typeByteSlice = reflect.TypeOf([]byte{})
|
||||
var typeDriverValuer = reflect.TypeOf((*driver.Valuer)(nil)).Elem()
|
||||
var typeSQLScanner = reflect.TypeOf((*sql.Scanner)(nil)).Elem()
|
||||
|
||||
// Array returns the optimal driver.Valuer and sql.Scanner for an array or
|
||||
// slice of any dimension.
|
||||
//
|
||||
// For example:
|
||||
// db.Query(`SELECT * FROM t WHERE id = ANY($1)`, pq.Array([]int{235, 401}))
|
||||
//
|
||||
// var x []sql.NullInt64
|
||||
// db.QueryRow('SELECT ARRAY[235, 401]').Scan(pq.Array(&x))
|
||||
//
|
||||
// Scanning multi-dimensional arrays is not supported. Arrays where the lower
|
||||
// bound is not one (such as `[0:0]={1}') are not supported.
|
||||
func Array(a interface{}) interface {
|
||||
driver.Valuer
|
||||
sql.Scanner
|
||||
} {
|
||||
switch a := a.(type) {
|
||||
case []bool:
|
||||
return (*BoolArray)(&a)
|
||||
case []float64:
|
||||
return (*Float64Array)(&a)
|
||||
case []int64:
|
||||
return (*Int64Array)(&a)
|
||||
case []string:
|
||||
return (*StringArray)(&a)
|
||||
|
||||
case *[]bool:
|
||||
return (*BoolArray)(a)
|
||||
case *[]float64:
|
||||
return (*Float64Array)(a)
|
||||
case *[]int64:
|
||||
return (*Int64Array)(a)
|
||||
case *[]string:
|
||||
return (*StringArray)(a)
|
||||
}
|
||||
|
||||
return GenericArray{a}
|
||||
}
|
||||
|
||||
// ArrayDelimiter may be optionally implemented by driver.Valuer or sql.Scanner
|
||||
// to override the array delimiter used by GenericArray.
|
||||
type ArrayDelimiter interface {
|
||||
// ArrayDelimiter returns the delimiter character(s) for this element's type.
|
||||
ArrayDelimiter() string
|
||||
}
|
||||
|
||||
// BoolArray represents a one-dimensional array of the PostgreSQL boolean type.
|
||||
type BoolArray []bool
|
||||
|
||||
// Scan implements the sql.Scanner interface.
|
||||
func (a *BoolArray) Scan(src interface{}) error {
|
||||
switch src := src.(type) {
|
||||
case []byte:
|
||||
return a.scanBytes(src)
|
||||
case string:
|
||||
return a.scanBytes([]byte(src))
|
||||
case nil:
|
||||
*a = nil
|
||||
return nil
|
||||
}
|
||||
|
||||
return fmt.Errorf("pq: cannot convert %T to BoolArray", src)
|
||||
}
|
||||
|
||||
func (a *BoolArray) scanBytes(src []byte) error {
|
||||
elems, err := scanLinearArray(src, []byte{','}, "BoolArray")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if *a != nil && len(elems) == 0 {
|
||||
*a = (*a)[:0]
|
||||
} else {
|
||||
b := make(BoolArray, len(elems))
|
||||
for i, v := range elems {
|
||||
if len(v) != 1 {
|
||||
return fmt.Errorf("pq: could not parse boolean array index %d: invalid boolean %q", i, v)
|
||||
}
|
||||
switch v[0] {
|
||||
case 't':
|
||||
b[i] = true
|
||||
case 'f':
|
||||
b[i] = false
|
||||
default:
|
||||
return fmt.Errorf("pq: could not parse boolean array index %d: invalid boolean %q", i, v)
|
||||
}
|
||||
}
|
||||
*a = b
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Value implements the driver.Valuer interface.
|
||||
func (a BoolArray) Value() (driver.Value, error) {
|
||||
if a == nil {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
if n := len(a); n > 0 {
|
||||
// There will be exactly two curly brackets, N bytes of values,
|
||||
// and N-1 bytes of delimiters.
|
||||
b := make([]byte, 1+2*n)
|
||||
|
||||
for i := 0; i < n; i++ {
|
||||
b[2*i] = ','
|
||||
if a[i] {
|
||||
b[1+2*i] = 't'
|
||||
} else {
|
||||
b[1+2*i] = 'f'
|
||||
}
|
||||
}
|
||||
|
||||
b[0] = '{'
|
||||
b[2*n] = '}'
|
||||
|
||||
return string(b), nil
|
||||
}
|
||||
|
||||
return "{}", nil
|
||||
}
|
||||
|
||||
// ByteaArray represents a one-dimensional array of the PostgreSQL bytea type.
|
||||
type ByteaArray [][]byte
|
||||
|
||||
// Scan implements the sql.Scanner interface.
|
||||
func (a *ByteaArray) Scan(src interface{}) error {
|
||||
switch src := src.(type) {
|
||||
case []byte:
|
||||
return a.scanBytes(src)
|
||||
case string:
|
||||
return a.scanBytes([]byte(src))
|
||||
case nil:
|
||||
*a = nil
|
||||
return nil
|
||||
}
|
||||
|
||||
return fmt.Errorf("pq: cannot convert %T to ByteaArray", src)
|
||||
}
|
||||
|
||||
func (a *ByteaArray) scanBytes(src []byte) error {
|
||||
elems, err := scanLinearArray(src, []byte{','}, "ByteaArray")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if *a != nil && len(elems) == 0 {
|
||||
*a = (*a)[:0]
|
||||
} else {
|
||||
b := make(ByteaArray, len(elems))
|
||||
for i, v := range elems {
|
||||
b[i], err = parseBytea(v)
|
||||
if err != nil {
|
||||
return fmt.Errorf("could not parse bytea array index %d: %s", i, err.Error())
|
||||
}
|
||||
}
|
||||
*a = b
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Value implements the driver.Valuer interface. It uses the "hex" format which
|
||||
// is only supported on PostgreSQL 9.0 or newer.
|
||||
func (a ByteaArray) Value() (driver.Value, error) {
|
||||
if a == nil {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
if n := len(a); n > 0 {
|
||||
// There will be at least two curly brackets, 2*N bytes of quotes,
|
||||
// 3*N bytes of hex formatting, and N-1 bytes of delimiters.
|
||||
size := 1 + 6*n
|
||||
for _, x := range a {
|
||||
size += hex.EncodedLen(len(x))
|
||||
}
|
||||
|
||||
b := make([]byte, size)
|
||||
|
||||
for i, s := 0, b; i < n; i++ {
|
||||
o := copy(s, `,"\\x`)
|
||||
o += hex.Encode(s[o:], a[i])
|
||||
s[o] = '"'
|
||||
s = s[o+1:]
|
||||
}
|
||||
|
||||
b[0] = '{'
|
||||
b[size-1] = '}'
|
||||
|
||||
return string(b), nil
|
||||
}
|
||||
|
||||
return "{}", nil
|
||||
}
|
||||
|
||||
// Float64Array represents a one-dimensional array of the PostgreSQL double
|
||||
// precision type.
|
||||
type Float64Array []float64
|
||||
|
||||
// Scan implements the sql.Scanner interface.
|
||||
func (a *Float64Array) Scan(src interface{}) error {
|
||||
switch src := src.(type) {
|
||||
case []byte:
|
||||
return a.scanBytes(src)
|
||||
case string:
|
||||
return a.scanBytes([]byte(src))
|
||||
case nil:
|
||||
*a = nil
|
||||
return nil
|
||||
}
|
||||
|
||||
return fmt.Errorf("pq: cannot convert %T to Float64Array", src)
|
||||
}
|
||||
|
||||
func (a *Float64Array) scanBytes(src []byte) error {
|
||||
elems, err := scanLinearArray(src, []byte{','}, "Float64Array")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if *a != nil && len(elems) == 0 {
|
||||
*a = (*a)[:0]
|
||||
} else {
|
||||
b := make(Float64Array, len(elems))
|
||||
for i, v := range elems {
|
||||
if b[i], err = strconv.ParseFloat(string(v), 64); err != nil {
|
||||
return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
|
||||
}
|
||||
}
|
||||
*a = b
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Value implements the driver.Valuer interface.
|
||||
func (a Float64Array) Value() (driver.Value, error) {
|
||||
if a == nil {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
if n := len(a); n > 0 {
|
||||
// There will be at least two curly brackets, N bytes of values,
|
||||
// and N-1 bytes of delimiters.
|
||||
b := make([]byte, 1, 1+2*n)
|
||||
b[0] = '{'
|
||||
|
||||
b = strconv.AppendFloat(b, a[0], 'f', -1, 64)
|
||||
for i := 1; i < n; i++ {
|
||||
b = append(b, ',')
|
||||
b = strconv.AppendFloat(b, a[i], 'f', -1, 64)
|
||||
}
|
||||
|
||||
return string(append(b, '}')), nil
|
||||
}
|
||||
|
||||
return "{}", nil
|
||||
}
|
||||
|
||||
// GenericArray implements the driver.Valuer and sql.Scanner interfaces for
|
||||
// an array or slice of any dimension.
|
||||
type GenericArray struct{ A interface{} }
|
||||
|
||||
func (GenericArray) evaluateDestination(rt reflect.Type) (reflect.Type, func([]byte, reflect.Value) error, string) {
|
||||
var assign func([]byte, reflect.Value) error
|
||||
var del = ","
|
||||
|
||||
// TODO calculate the assign function for other types
|
||||
// TODO repeat this section on the element type of arrays or slices (multidimensional)
|
||||
{
|
||||
if reflect.PtrTo(rt).Implements(typeSQLScanner) {
|
||||
// dest is always addressable because it is an element of a slice.
|
||||
assign = func(src []byte, dest reflect.Value) (err error) {
|
||||
ss := dest.Addr().Interface().(sql.Scanner)
|
||||
if src == nil {
|
||||
err = ss.Scan(nil)
|
||||
} else {
|
||||
err = ss.Scan(src)
|
||||
}
|
||||
return
|
||||
}
|
||||
goto FoundType
|
||||
}
|
||||
|
||||
assign = func([]byte, reflect.Value) error {
|
||||
return fmt.Errorf("pq: scanning to %s is not implemented; only sql.Scanner", rt)
|
||||
}
|
||||
}
|
||||
|
||||
FoundType:
|
||||
|
||||
if ad, ok := reflect.Zero(rt).Interface().(ArrayDelimiter); ok {
|
||||
del = ad.ArrayDelimiter()
|
||||
}
|
||||
|
||||
return rt, assign, del
|
||||
}
|
||||
|
||||
// Scan implements the sql.Scanner interface.
|
||||
func (a GenericArray) Scan(src interface{}) error {
|
||||
dpv := reflect.ValueOf(a.A)
|
||||
switch {
|
||||
case dpv.Kind() != reflect.Ptr:
|
||||
return fmt.Errorf("pq: destination %T is not a pointer to array or slice", a.A)
|
||||
case dpv.IsNil():
|
||||
return fmt.Errorf("pq: destination %T is nil", a.A)
|
||||
}
|
||||
|
||||
dv := dpv.Elem()
|
||||
switch dv.Kind() {
|
||||
case reflect.Slice:
|
||||
case reflect.Array:
|
||||
default:
|
||||
return fmt.Errorf("pq: destination %T is not a pointer to array or slice", a.A)
|
||||
}
|
||||
|
||||
switch src := src.(type) {
|
||||
case []byte:
|
||||
return a.scanBytes(src, dv)
|
||||
case string:
|
||||
return a.scanBytes([]byte(src), dv)
|
||||
case nil:
|
||||
if dv.Kind() == reflect.Slice {
|
||||
dv.Set(reflect.Zero(dv.Type()))
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
return fmt.Errorf("pq: cannot convert %T to %s", src, dv.Type())
|
||||
}
|
||||
|
||||
func (a GenericArray) scanBytes(src []byte, dv reflect.Value) error {
|
||||
dtype, assign, del := a.evaluateDestination(dv.Type().Elem())
|
||||
dims, elems, err := parseArray(src, []byte(del))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// TODO allow multidimensional
|
||||
|
||||
if len(dims) > 1 {
|
||||
return fmt.Errorf("pq: scanning from multidimensional ARRAY%s is not implemented",
|
||||
strings.Replace(fmt.Sprint(dims), " ", "][", -1))
|
||||
}
|
||||
|
||||
// Treat a zero-dimensional array like an array with a single dimension of zero.
|
||||
if len(dims) == 0 {
|
||||
dims = append(dims, 0)
|
||||
}
|
||||
|
||||
for i, rt := 0, dv.Type(); i < len(dims); i, rt = i+1, rt.Elem() {
|
||||
switch rt.Kind() {
|
||||
case reflect.Slice:
|
||||
case reflect.Array:
|
||||
if rt.Len() != dims[i] {
|
||||
return fmt.Errorf("pq: cannot convert ARRAY%s to %s",
|
||||
strings.Replace(fmt.Sprint(dims), " ", "][", -1), dv.Type())
|
||||
}
|
||||
default:
|
||||
// TODO handle multidimensional
|
||||
}
|
||||
}
|
||||
|
||||
values := reflect.MakeSlice(reflect.SliceOf(dtype), len(elems), len(elems))
|
||||
for i, e := range elems {
|
||||
if err := assign(e, values.Index(i)); err != nil {
|
||||
return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
|
||||
}
|
||||
}
|
||||
|
||||
// TODO handle multidimensional
|
||||
|
||||
switch dv.Kind() {
|
||||
case reflect.Slice:
|
||||
dv.Set(values.Slice(0, dims[0]))
|
||||
case reflect.Array:
|
||||
for i := 0; i < dims[0]; i++ {
|
||||
dv.Index(i).Set(values.Index(i))
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Value implements the driver.Valuer interface.
|
||||
func (a GenericArray) Value() (driver.Value, error) {
|
||||
if a.A == nil {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
rv := reflect.ValueOf(a.A)
|
||||
|
||||
switch rv.Kind() {
|
||||
case reflect.Slice:
|
||||
if rv.IsNil() {
|
||||
return nil, nil
|
||||
}
|
||||
case reflect.Array:
|
||||
default:
|
||||
return nil, fmt.Errorf("pq: Unable to convert %T to array", a.A)
|
||||
}
|
||||
|
||||
if n := rv.Len(); n > 0 {
|
||||
// There will be at least two curly brackets, N bytes of values,
|
||||
// and N-1 bytes of delimiters.
|
||||
b := make([]byte, 0, 1+2*n)
|
||||
|
||||
b, _, err := appendArray(b, rv, n)
|
||||
return string(b), err
|
||||
}
|
||||
|
||||
return "{}", nil
|
||||
}
|
||||
|
||||
// Int64Array represents a one-dimensional array of the PostgreSQL integer types.
|
||||
type Int64Array []int64
|
||||
|
||||
// Scan implements the sql.Scanner interface.
|
||||
func (a *Int64Array) Scan(src interface{}) error {
|
||||
switch src := src.(type) {
|
||||
case []byte:
|
||||
return a.scanBytes(src)
|
||||
case string:
|
||||
return a.scanBytes([]byte(src))
|
||||
case nil:
|
||||
*a = nil
|
||||
return nil
|
||||
}
|
||||
|
||||
return fmt.Errorf("pq: cannot convert %T to Int64Array", src)
|
||||
}
|
||||
|
||||
func (a *Int64Array) scanBytes(src []byte) error {
|
||||
elems, err := scanLinearArray(src, []byte{','}, "Int64Array")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if *a != nil && len(elems) == 0 {
|
||||
*a = (*a)[:0]
|
||||
} else {
|
||||
b := make(Int64Array, len(elems))
|
||||
for i, v := range elems {
|
||||
if b[i], err = strconv.ParseInt(string(v), 10, 64); err != nil {
|
||||
return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
|
||||
}
|
||||
}
|
||||
*a = b
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Value implements the driver.Valuer interface.
|
||||
func (a Int64Array) Value() (driver.Value, error) {
|
||||
if a == nil {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
if n := len(a); n > 0 {
|
||||
// There will be at least two curly brackets, N bytes of values,
|
||||
// and N-1 bytes of delimiters.
|
||||
b := make([]byte, 1, 1+2*n)
|
||||
b[0] = '{'
|
||||
|
||||
b = strconv.AppendInt(b, a[0], 10)
|
||||
for i := 1; i < n; i++ {
|
||||
b = append(b, ',')
|
||||
b = strconv.AppendInt(b, a[i], 10)
|
||||
}
|
||||
|
||||
return string(append(b, '}')), nil
|
||||
}
|
||||
|
||||
return "{}", nil
|
||||
}
|
||||
|
||||
// StringArray represents a one-dimensional array of the PostgreSQL character types.
|
||||
type StringArray []string
|
||||
|
||||
// Scan implements the sql.Scanner interface.
|
||||
func (a *StringArray) Scan(src interface{}) error {
|
||||
switch src := src.(type) {
|
||||
case []byte:
|
||||
return a.scanBytes(src)
|
||||
case string:
|
||||
return a.scanBytes([]byte(src))
|
||||
case nil:
|
||||
*a = nil
|
||||
return nil
|
||||
}
|
||||
|
||||
return fmt.Errorf("pq: cannot convert %T to StringArray", src)
|
||||
}
|
||||
|
||||
func (a *StringArray) scanBytes(src []byte) error {
|
||||
elems, err := scanLinearArray(src, []byte{','}, "StringArray")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if *a != nil && len(elems) == 0 {
|
||||
*a = (*a)[:0]
|
||||
} else {
|
||||
b := make(StringArray, len(elems))
|
||||
for i, v := range elems {
|
||||
if b[i] = string(v); v == nil {
|
||||
return fmt.Errorf("pq: parsing array element index %d: cannot convert nil to string", i)
|
||||
}
|
||||
}
|
||||
*a = b
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Value implements the driver.Valuer interface.
|
||||
func (a StringArray) Value() (driver.Value, error) {
|
||||
if a == nil {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
if n := len(a); n > 0 {
|
||||
// There will be at least two curly brackets, 2*N bytes of quotes,
|
||||
// and N-1 bytes of delimiters.
|
||||
b := make([]byte, 1, 1+3*n)
|
||||
b[0] = '{'
|
||||
|
||||
b = appendArrayQuotedBytes(b, []byte(a[0]))
|
||||
for i := 1; i < n; i++ {
|
||||
b = append(b, ',')
|
||||
b = appendArrayQuotedBytes(b, []byte(a[i]))
|
||||
}
|
||||
|
||||
return string(append(b, '}')), nil
|
||||
}
|
||||
|
||||
return "{}", nil
|
||||
}
|
||||
|
||||
// appendArray appends rv to the buffer, returning the extended buffer and
|
||||
// the delimiter used between elements.
|
||||
//
|
||||
// It panics when n <= 0 or rv's Kind is not reflect.Array nor reflect.Slice.
|
||||
func appendArray(b []byte, rv reflect.Value, n int) ([]byte, string, error) {
|
||||
var del string
|
||||
var err error
|
||||
|
||||
b = append(b, '{')
|
||||
|
||||
if b, del, err = appendArrayElement(b, rv.Index(0)); err != nil {
|
||||
return b, del, err
|
||||
}
|
||||
|
||||
for i := 1; i < n; i++ {
|
||||
b = append(b, del...)
|
||||
if b, del, err = appendArrayElement(b, rv.Index(i)); err != nil {
|
||||
return b, del, err
|
||||
}
|
||||
}
|
||||
|
||||
return append(b, '}'), del, nil
|
||||
}
|
||||
|
||||
// appendArrayElement appends rv to the buffer, returning the extended buffer
|
||||
// and the delimiter to use before the next element.
|
||||
//
|
||||
// When rv's Kind is neither reflect.Array nor reflect.Slice, it is converted
|
||||
// using driver.DefaultParameterConverter and the resulting []byte or string
|
||||
// is double-quoted.
|
||||
//
|
||||
// See http://www.postgresql.org/docs/current/static/arrays.html#ARRAYS-IO
|
||||
func appendArrayElement(b []byte, rv reflect.Value) ([]byte, string, error) {
|
||||
if k := rv.Kind(); k == reflect.Array || k == reflect.Slice {
|
||||
if t := rv.Type(); t != typeByteSlice && !t.Implements(typeDriverValuer) {
|
||||
if n := rv.Len(); n > 0 {
|
||||
return appendArray(b, rv, n)
|
||||
}
|
||||
|
||||
return b, "", nil
|
||||
}
|
||||
}
|
||||
|
||||
var del = ","
|
||||
var err error
|
||||
var iv interface{} = rv.Interface()
|
||||
|
||||
if ad, ok := iv.(ArrayDelimiter); ok {
|
||||
del = ad.ArrayDelimiter()
|
||||
}
|
||||
|
||||
if iv, err = driver.DefaultParameterConverter.ConvertValue(iv); err != nil {
|
||||
return b, del, err
|
||||
}
|
||||
|
||||
switch v := iv.(type) {
|
||||
case nil:
|
||||
return append(b, "NULL"...), del, nil
|
||||
case []byte:
|
||||
return appendArrayQuotedBytes(b, v), del, nil
|
||||
case string:
|
||||
return appendArrayQuotedBytes(b, []byte(v)), del, nil
|
||||
}
|
||||
|
||||
b, err = appendValue(b, iv)
|
||||
return b, del, err
|
||||
}
|
||||
|
||||
func appendArrayQuotedBytes(b, v []byte) []byte {
|
||||
b = append(b, '"')
|
||||
for {
|
||||
i := bytes.IndexAny(v, `"\`)
|
||||
if i < 0 {
|
||||
b = append(b, v...)
|
||||
break
|
||||
}
|
||||
if i > 0 {
|
||||
b = append(b, v[:i]...)
|
||||
}
|
||||
b = append(b, '\\', v[i])
|
||||
v = v[i+1:]
|
||||
}
|
||||
return append(b, '"')
|
||||
}
|
||||
|
||||
func appendValue(b []byte, v driver.Value) ([]byte, error) {
|
||||
return append(b, encode(nil, v, 0)...), nil
|
||||
}
|
||||
|
||||
// parseArray extracts the dimensions and elements of an array represented in
|
||||
// text format. Only representations emitted by the backend are supported.
|
||||
// Notably, whitespace around brackets and delimiters is significant, and NULL
|
||||
// is case-sensitive.
|
||||
//
|
||||
// See http://www.postgresql.org/docs/current/static/arrays.html#ARRAYS-IO
|
||||
func parseArray(src, del []byte) (dims []int, elems [][]byte, err error) {
|
||||
var depth, i int
|
||||
|
||||
if len(src) < 1 || src[0] != '{' {
|
||||
return nil, nil, fmt.Errorf("pq: unable to parse array; expected %q at offset %d", '{', 0)
|
||||
}
|
||||
|
||||
Open:
|
||||
for i < len(src) {
|
||||
switch src[i] {
|
||||
case '{':
|
||||
depth++
|
||||
i++
|
||||
case '}':
|
||||
elems = make([][]byte, 0)
|
||||
goto Close
|
||||
default:
|
||||
break Open
|
||||
}
|
||||
}
|
||||
dims = make([]int, i)
|
||||
|
||||
Element:
|
||||
for i < len(src) {
|
||||
switch src[i] {
|
||||
case '{':
|
||||
if depth == len(dims) {
|
||||
break Element
|
||||
}
|
||||
depth++
|
||||
dims[depth-1] = 0
|
||||
i++
|
||||
case '"':
|
||||
var elem = []byte{}
|
||||
var escape bool
|
||||
for i++; i < len(src); i++ {
|
||||
if escape {
|
||||
elem = append(elem, src[i])
|
||||
escape = false
|
||||
} else {
|
||||
switch src[i] {
|
||||
default:
|
||||
elem = append(elem, src[i])
|
||||
case '\\':
|
||||
escape = true
|
||||
case '"':
|
||||
elems = append(elems, elem)
|
||||
i++
|
||||
break Element
|
||||
}
|
||||
}
|
||||
}
|
||||
default:
|
||||
for start := i; i < len(src); i++ {
|
||||
if bytes.HasPrefix(src[i:], del) || src[i] == '}' {
|
||||
elem := src[start:i]
|
||||
if len(elem) == 0 {
|
||||
return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i)
|
||||
}
|
||||
if bytes.Equal(elem, []byte("NULL")) {
|
||||
elem = nil
|
||||
}
|
||||
elems = append(elems, elem)
|
||||
break Element
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for i < len(src) {
|
||||
if bytes.HasPrefix(src[i:], del) && depth > 0 {
|
||||
dims[depth-1]++
|
||||
i += len(del)
|
||||
goto Element
|
||||
} else if src[i] == '}' && depth > 0 {
|
||||
dims[depth-1]++
|
||||
depth--
|
||||
i++
|
||||
} else {
|
||||
return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i)
|
||||
}
|
||||
}
|
||||
|
||||
Close:
|
||||
for i < len(src) {
|
||||
if src[i] == '}' && depth > 0 {
|
||||
depth--
|
||||
i++
|
||||
} else {
|
||||
return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i)
|
||||
}
|
||||
}
|
||||
if depth > 0 {
|
||||
err = fmt.Errorf("pq: unable to parse array; expected %q at offset %d", '}', i)
|
||||
}
|
||||
if err == nil {
|
||||
for _, d := range dims {
|
||||
if (len(elems) % d) != 0 {
|
||||
err = fmt.Errorf("pq: multidimensional arrays must have elements with matching dimensions")
|
||||
}
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func scanLinearArray(src, del []byte, typ string) (elems [][]byte, err error) {
|
||||
dims, elems, err := parseArray(src, del)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(dims) > 1 {
|
||||
return nil, fmt.Errorf("pq: cannot convert ARRAY%s to %s", strings.Replace(fmt.Sprint(dims), " ", "][", -1), typ)
|
||||
}
|
||||
return elems, err
|
||||
}
|
||||
|
|
@ -0,0 +1,91 @@
|
|||
package pq
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/binary"
|
||||
|
||||
"github.com/lib/pq/oid"
|
||||
)
|
||||
|
||||
type readBuf []byte
|
||||
|
||||
func (b *readBuf) int32() (n int) {
|
||||
n = int(int32(binary.BigEndian.Uint32(*b)))
|
||||
*b = (*b)[4:]
|
||||
return
|
||||
}
|
||||
|
||||
func (b *readBuf) oid() (n oid.Oid) {
|
||||
n = oid.Oid(binary.BigEndian.Uint32(*b))
|
||||
*b = (*b)[4:]
|
||||
return
|
||||
}
|
||||
|
||||
// N.B: this is actually an unsigned 16-bit integer, unlike int32
|
||||
func (b *readBuf) int16() (n int) {
|
||||
n = int(binary.BigEndian.Uint16(*b))
|
||||
*b = (*b)[2:]
|
||||
return
|
||||
}
|
||||
|
||||
func (b *readBuf) string() string {
|
||||
i := bytes.IndexByte(*b, 0)
|
||||
if i < 0 {
|
||||
errorf("invalid message format; expected string terminator")
|
||||
}
|
||||
s := (*b)[:i]
|
||||
*b = (*b)[i+1:]
|
||||
return string(s)
|
||||
}
|
||||
|
||||
func (b *readBuf) next(n int) (v []byte) {
|
||||
v = (*b)[:n]
|
||||
*b = (*b)[n:]
|
||||
return
|
||||
}
|
||||
|
||||
func (b *readBuf) byte() byte {
|
||||
return b.next(1)[0]
|
||||
}
|
||||
|
||||
type writeBuf struct {
|
||||
buf []byte
|
||||
pos int
|
||||
}
|
||||
|
||||
func (b *writeBuf) int32(n int) {
|
||||
x := make([]byte, 4)
|
||||
binary.BigEndian.PutUint32(x, uint32(n))
|
||||
b.buf = append(b.buf, x...)
|
||||
}
|
||||
|
||||
func (b *writeBuf) int16(n int) {
|
||||
x := make([]byte, 2)
|
||||
binary.BigEndian.PutUint16(x, uint16(n))
|
||||
b.buf = append(b.buf, x...)
|
||||
}
|
||||
|
||||
func (b *writeBuf) string(s string) {
|
||||
b.buf = append(b.buf, (s + "\000")...)
|
||||
}
|
||||
|
||||
func (b *writeBuf) byte(c byte) {
|
||||
b.buf = append(b.buf, c)
|
||||
}
|
||||
|
||||
func (b *writeBuf) bytes(v []byte) {
|
||||
b.buf = append(b.buf, v...)
|
||||
}
|
||||
|
||||
func (b *writeBuf) wrap() []byte {
|
||||
p := b.buf[b.pos:]
|
||||
binary.BigEndian.PutUint32(p, uint32(len(p)))
|
||||
return b.buf
|
||||
}
|
||||
|
||||
func (b *writeBuf) next(c byte) {
|
||||
p := b.buf[b.pos:]
|
||||
binary.BigEndian.PutUint32(p, uint32(len(p)))
|
||||
b.pos = len(b.buf) + 1
|
||||
b.buf = append(b.buf, c, 0, 0, 0, 0)
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,131 @@
|
|||
// +build go1.8
|
||||
|
||||
package pq
|
||||
|
||||
import (
|
||||
"context"
|
||||
"database/sql"
|
||||
"database/sql/driver"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
)
|
||||
|
||||
// Implement the "QueryerContext" interface
|
||||
func (cn *conn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
|
||||
list := make([]driver.Value, len(args))
|
||||
for i, nv := range args {
|
||||
list[i] = nv.Value
|
||||
}
|
||||
finish := cn.watchCancel(ctx)
|
||||
r, err := cn.query(query, list)
|
||||
if err != nil {
|
||||
if finish != nil {
|
||||
finish()
|
||||
}
|
||||
return nil, err
|
||||
}
|
||||
r.finish = finish
|
||||
return r, nil
|
||||
}
|
||||
|
||||
// Implement the "ExecerContext" interface
|
||||
func (cn *conn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
|
||||
list := make([]driver.Value, len(args))
|
||||
for i, nv := range args {
|
||||
list[i] = nv.Value
|
||||
}
|
||||
|
||||
if finish := cn.watchCancel(ctx); finish != nil {
|
||||
defer finish()
|
||||
}
|
||||
|
||||
return cn.Exec(query, list)
|
||||
}
|
||||
|
||||
// Implement the "ConnBeginTx" interface
|
||||
func (cn *conn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
|
||||
var mode string
|
||||
|
||||
switch sql.IsolationLevel(opts.Isolation) {
|
||||
case sql.LevelDefault:
|
||||
// Don't touch mode: use the server's default
|
||||
case sql.LevelReadUncommitted:
|
||||
mode = " ISOLATION LEVEL READ UNCOMMITTED"
|
||||
case sql.LevelReadCommitted:
|
||||
mode = " ISOLATION LEVEL READ COMMITTED"
|
||||
case sql.LevelRepeatableRead:
|
||||
mode = " ISOLATION LEVEL REPEATABLE READ"
|
||||
case sql.LevelSerializable:
|
||||
mode = " ISOLATION LEVEL SERIALIZABLE"
|
||||
default:
|
||||
return nil, fmt.Errorf("pq: isolation level not supported: %d", opts.Isolation)
|
||||
}
|
||||
|
||||
if opts.ReadOnly {
|
||||
mode += " READ ONLY"
|
||||
} else {
|
||||
mode += " READ WRITE"
|
||||
}
|
||||
|
||||
tx, err := cn.begin(mode)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
cn.txnFinish = cn.watchCancel(ctx)
|
||||
return tx, nil
|
||||
}
|
||||
|
||||
func (cn *conn) watchCancel(ctx context.Context) func() {
|
||||
if done := ctx.Done(); done != nil {
|
||||
finished := make(chan struct{})
|
||||
go func() {
|
||||
select {
|
||||
case <-done:
|
||||
_ = cn.cancel()
|
||||
finished <- struct{}{}
|
||||
case <-finished:
|
||||
}
|
||||
}()
|
||||
return func() {
|
||||
select {
|
||||
case <-finished:
|
||||
case finished <- struct{}{}:
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (cn *conn) cancel() error {
|
||||
c, err := dial(cn.dialer, cn.opts)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
{
|
||||
can := conn{
|
||||
c: c,
|
||||
}
|
||||
err = can.ssl(cn.opts)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
w := can.writeBuf(0)
|
||||
w.int32(80877102) // cancel request code
|
||||
w.int32(cn.processID)
|
||||
w.int32(cn.secretKey)
|
||||
|
||||
if err := can.sendStartupPacket(w); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Read until EOF to ensure that the server received the cancel.
|
||||
{
|
||||
_, err := io.Copy(ioutil.Discard, c)
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,43 @@
|
|||
// +build go1.10
|
||||
|
||||
package pq
|
||||
|
||||
import (
|
||||
"context"
|
||||
"database/sql/driver"
|
||||
)
|
||||
|
||||
// Connector represents a fixed configuration for the pq driver with a given
|
||||
// name. Connector satisfies the database/sql/driver Connector interface and
|
||||
// can be used to create any number of DB Conn's via the database/sql OpenDB
|
||||
// function.
|
||||
//
|
||||
// See https://golang.org/pkg/database/sql/driver/#Connector.
|
||||
// See https://golang.org/pkg/database/sql/#OpenDB.
|
||||
type connector struct {
|
||||
name string
|
||||
}
|
||||
|
||||
// Connect returns a connection to the database using the fixed configuration
|
||||
// of this Connector. Context is not used.
|
||||
func (c *connector) Connect(_ context.Context) (driver.Conn, error) {
|
||||
return (&Driver{}).Open(c.name)
|
||||
}
|
||||
|
||||
// Driver returnst the underlying driver of this Connector.
|
||||
func (c *connector) Driver() driver.Driver {
|
||||
return &Driver{}
|
||||
}
|
||||
|
||||
var _ driver.Connector = &connector{}
|
||||
|
||||
// NewConnector returns a connector for the pq driver in a fixed configuration
|
||||
// with the given name. The returned connector can be used to create any number
|
||||
// of equivalent Conn's. The returned connector is intended to be used with
|
||||
// database/sql.OpenDB.
|
||||
//
|
||||
// See https://golang.org/pkg/database/sql/driver/#Connector.
|
||||
// See https://golang.org/pkg/database/sql/#OpenDB.
|
||||
func NewConnector(name string) (driver.Connector, error) {
|
||||
return &connector{name: name}, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,282 @@
|
|||
package pq
|
||||
|
||||
import (
|
||||
"database/sql/driver"
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"fmt"
|
||||
"sync"
|
||||
)
|
||||
|
||||
var (
|
||||
errCopyInClosed = errors.New("pq: copyin statement has already been closed")
|
||||
errBinaryCopyNotSupported = errors.New("pq: only text format supported for COPY")
|
||||
errCopyToNotSupported = errors.New("pq: COPY TO is not supported")
|
||||
errCopyNotSupportedOutsideTxn = errors.New("pq: COPY is only allowed inside a transaction")
|
||||
errCopyInProgress = errors.New("pq: COPY in progress")
|
||||
)
|
||||
|
||||
// CopyIn creates a COPY FROM statement which can be prepared with
|
||||
// Tx.Prepare(). The target table should be visible in search_path.
|
||||
func CopyIn(table string, columns ...string) string {
|
||||
stmt := "COPY " + QuoteIdentifier(table) + " ("
|
||||
for i, col := range columns {
|
||||
if i != 0 {
|
||||
stmt += ", "
|
||||
}
|
||||
stmt += QuoteIdentifier(col)
|
||||
}
|
||||
stmt += ") FROM STDIN"
|
||||
return stmt
|
||||
}
|
||||
|
||||
// CopyInSchema creates a COPY FROM statement which can be prepared with
|
||||
// Tx.Prepare().
|
||||
func CopyInSchema(schema, table string, columns ...string) string {
|
||||
stmt := "COPY " + QuoteIdentifier(schema) + "." + QuoteIdentifier(table) + " ("
|
||||
for i, col := range columns {
|
||||
if i != 0 {
|
||||
stmt += ", "
|
||||
}
|
||||
stmt += QuoteIdentifier(col)
|
||||
}
|
||||
stmt += ") FROM STDIN"
|
||||
return stmt
|
||||
}
|
||||
|
||||
type copyin struct {
|
||||
cn *conn
|
||||
buffer []byte
|
||||
rowData chan []byte
|
||||
done chan bool
|
||||
|
||||
closed bool
|
||||
|
||||
sync.Mutex // guards err
|
||||
err error
|
||||
}
|
||||
|
||||
const ciBufferSize = 64 * 1024
|
||||
|
||||
// flush buffer before the buffer is filled up and needs reallocation
|
||||
const ciBufferFlushSize = 63 * 1024
|
||||
|
||||
func (cn *conn) prepareCopyIn(q string) (_ driver.Stmt, err error) {
|
||||
if !cn.isInTransaction() {
|
||||
return nil, errCopyNotSupportedOutsideTxn
|
||||
}
|
||||
|
||||
ci := ©in{
|
||||
cn: cn,
|
||||
buffer: make([]byte, 0, ciBufferSize),
|
||||
rowData: make(chan []byte),
|
||||
done: make(chan bool, 1),
|
||||
}
|
||||
// add CopyData identifier + 4 bytes for message length
|
||||
ci.buffer = append(ci.buffer, 'd', 0, 0, 0, 0)
|
||||
|
||||
b := cn.writeBuf('Q')
|
||||
b.string(q)
|
||||
cn.send(b)
|
||||
|
||||
awaitCopyInResponse:
|
||||
for {
|
||||
t, r := cn.recv1()
|
||||
switch t {
|
||||
case 'G':
|
||||
if r.byte() != 0 {
|
||||
err = errBinaryCopyNotSupported
|
||||
break awaitCopyInResponse
|
||||
}
|
||||
go ci.resploop()
|
||||
return ci, nil
|
||||
case 'H':
|
||||
err = errCopyToNotSupported
|
||||
break awaitCopyInResponse
|
||||
case 'E':
|
||||
err = parseError(r)
|
||||
case 'Z':
|
||||
if err == nil {
|
||||
ci.setBad()
|
||||
errorf("unexpected ReadyForQuery in response to COPY")
|
||||
}
|
||||
cn.processReadyForQuery(r)
|
||||
return nil, err
|
||||
default:
|
||||
ci.setBad()
|
||||
errorf("unknown response for copy query: %q", t)
|
||||
}
|
||||
}
|
||||
|
||||
// something went wrong, abort COPY before we return
|
||||
b = cn.writeBuf('f')
|
||||
b.string(err.Error())
|
||||
cn.send(b)
|
||||
|
||||
for {
|
||||
t, r := cn.recv1()
|
||||
switch t {
|
||||
case 'c', 'C', 'E':
|
||||
case 'Z':
|
||||
// correctly aborted, we're done
|
||||
cn.processReadyForQuery(r)
|
||||
return nil, err
|
||||
default:
|
||||
ci.setBad()
|
||||
errorf("unknown response for CopyFail: %q", t)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (ci *copyin) flush(buf []byte) {
|
||||
// set message length (without message identifier)
|
||||
binary.BigEndian.PutUint32(buf[1:], uint32(len(buf)-1))
|
||||
|
||||
_, err := ci.cn.c.Write(buf)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
|
||||
func (ci *copyin) resploop() {
|
||||
for {
|
||||
var r readBuf
|
||||
t, err := ci.cn.recvMessage(&r)
|
||||
if err != nil {
|
||||
ci.setBad()
|
||||
ci.setError(err)
|
||||
ci.done <- true
|
||||
return
|
||||
}
|
||||
switch t {
|
||||
case 'C':
|
||||
// complete
|
||||
case 'N':
|
||||
// NoticeResponse
|
||||
case 'Z':
|
||||
ci.cn.processReadyForQuery(&r)
|
||||
ci.done <- true
|
||||
return
|
||||
case 'E':
|
||||
err := parseError(&r)
|
||||
ci.setError(err)
|
||||
default:
|
||||
ci.setBad()
|
||||
ci.setError(fmt.Errorf("unknown response during CopyIn: %q", t))
|
||||
ci.done <- true
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (ci *copyin) setBad() {
|
||||
ci.Lock()
|
||||
ci.cn.bad = true
|
||||
ci.Unlock()
|
||||
}
|
||||
|
||||
func (ci *copyin) isBad() bool {
|
||||
ci.Lock()
|
||||
b := ci.cn.bad
|
||||
ci.Unlock()
|
||||
return b
|
||||
}
|
||||
|
||||
func (ci *copyin) isErrorSet() bool {
|
||||
ci.Lock()
|
||||
isSet := (ci.err != nil)
|
||||
ci.Unlock()
|
||||
return isSet
|
||||
}
|
||||
|
||||
// setError() sets ci.err if one has not been set already. Caller must not be
|
||||
// holding ci.Mutex.
|
||||
func (ci *copyin) setError(err error) {
|
||||
ci.Lock()
|
||||
if ci.err == nil {
|
||||
ci.err = err
|
||||
}
|
||||
ci.Unlock()
|
||||
}
|
||||
|
||||
func (ci *copyin) NumInput() int {
|
||||
return -1
|
||||
}
|
||||
|
||||
func (ci *copyin) Query(v []driver.Value) (r driver.Rows, err error) {
|
||||
return nil, ErrNotSupported
|
||||
}
|
||||
|
||||
// Exec inserts values into the COPY stream. The insert is asynchronous
|
||||
// and Exec can return errors from previous Exec calls to the same
|
||||
// COPY stmt.
|
||||
//
|
||||
// You need to call Exec(nil) to sync the COPY stream and to get any
|
||||
// errors from pending data, since Stmt.Close() doesn't return errors
|
||||
// to the user.
|
||||
func (ci *copyin) Exec(v []driver.Value) (r driver.Result, err error) {
|
||||
if ci.closed {
|
||||
return nil, errCopyInClosed
|
||||
}
|
||||
|
||||
if ci.isBad() {
|
||||
return nil, driver.ErrBadConn
|
||||
}
|
||||
defer ci.cn.errRecover(&err)
|
||||
|
||||
if ci.isErrorSet() {
|
||||
return nil, ci.err
|
||||
}
|
||||
|
||||
if len(v) == 0 {
|
||||
return nil, ci.Close()
|
||||
}
|
||||
|
||||
numValues := len(v)
|
||||
for i, value := range v {
|
||||
ci.buffer = appendEncodedText(&ci.cn.parameterStatus, ci.buffer, value)
|
||||
if i < numValues-1 {
|
||||
ci.buffer = append(ci.buffer, '\t')
|
||||
}
|
||||
}
|
||||
|
||||
ci.buffer = append(ci.buffer, '\n')
|
||||
|
||||
if len(ci.buffer) > ciBufferFlushSize {
|
||||
ci.flush(ci.buffer)
|
||||
// reset buffer, keep bytes for message identifier and length
|
||||
ci.buffer = ci.buffer[:5]
|
||||
}
|
||||
|
||||
return driver.RowsAffected(0), nil
|
||||
}
|
||||
|
||||
func (ci *copyin) Close() (err error) {
|
||||
if ci.closed { // Don't do anything, we're already closed
|
||||
return nil
|
||||
}
|
||||
ci.closed = true
|
||||
|
||||
if ci.isBad() {
|
||||
return driver.ErrBadConn
|
||||
}
|
||||
defer ci.cn.errRecover(&err)
|
||||
|
||||
if len(ci.buffer) > 0 {
|
||||
ci.flush(ci.buffer)
|
||||
}
|
||||
// Avoid touching the scratch buffer as resploop could be using it.
|
||||
err = ci.cn.sendSimpleMessage('c')
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
<-ci.done
|
||||
ci.cn.inCopy = false
|
||||
|
||||
if ci.isErrorSet() {
|
||||
err = ci.err
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,245 @@
|
|||
/*
|
||||
Package pq is a pure Go Postgres driver for the database/sql package.
|
||||
|
||||
In most cases clients will use the database/sql package instead of
|
||||
using this package directly. For example:
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
|
||||
_ "github.com/lib/pq"
|
||||
)
|
||||
|
||||
func main() {
|
||||
connStr := "user=pqgotest dbname=pqgotest sslmode=verify-full"
|
||||
db, err := sql.Open("postgres", connStr)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
age := 21
|
||||
rows, err := db.Query("SELECT name FROM users WHERE age = $1", age)
|
||||
…
|
||||
}
|
||||
|
||||
You can also connect to a database using a URL. For example:
|
||||
|
||||
connStr := "postgres://pqgotest:password@localhost/pqgotest?sslmode=verify-full"
|
||||
db, err := sql.Open("postgres", connStr)
|
||||
|
||||
|
||||
Connection String Parameters
|
||||
|
||||
|
||||
Similarly to libpq, when establishing a connection using pq you are expected to
|
||||
supply a connection string containing zero or more parameters.
|
||||
A subset of the connection parameters supported by libpq are also supported by pq.
|
||||
Additionally, pq also lets you specify run-time parameters (such as search_path or work_mem)
|
||||
directly in the connection string. This is different from libpq, which does not allow
|
||||
run-time parameters in the connection string, instead requiring you to supply
|
||||
them in the options parameter.
|
||||
|
||||
For compatibility with libpq, the following special connection parameters are
|
||||
supported:
|
||||
|
||||
* dbname - The name of the database to connect to
|
||||
* user - The user to sign in as
|
||||
* password - The user's password
|
||||
* host - The host to connect to. Values that start with / are for unix
|
||||
domain sockets. (default is localhost)
|
||||
* port - The port to bind to. (default is 5432)
|
||||
* sslmode - Whether or not to use SSL (default is require, this is not
|
||||
the default for libpq)
|
||||
* fallback_application_name - An application_name to fall back to if one isn't provided.
|
||||
* connect_timeout - Maximum wait for connection, in seconds. Zero or
|
||||
not specified means wait indefinitely.
|
||||
* sslcert - Cert file location. The file must contain PEM encoded data.
|
||||
* sslkey - Key file location. The file must contain PEM encoded data.
|
||||
* sslrootcert - The location of the root certificate file. The file
|
||||
must contain PEM encoded data.
|
||||
|
||||
Valid values for sslmode are:
|
||||
|
||||
* disable - No SSL
|
||||
* require - Always SSL (skip verification)
|
||||
* verify-ca - Always SSL (verify that the certificate presented by the
|
||||
server was signed by a trusted CA)
|
||||
* verify-full - Always SSL (verify that the certification presented by
|
||||
the server was signed by a trusted CA and the server host name
|
||||
matches the one in the certificate)
|
||||
|
||||
See http://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-CONNSTRING
|
||||
for more information about connection string parameters.
|
||||
|
||||
Use single quotes for values that contain whitespace:
|
||||
|
||||
"user=pqgotest password='with spaces'"
|
||||
|
||||
A backslash will escape the next character in values:
|
||||
|
||||
"user=space\ man password='it\'s valid'"
|
||||
|
||||
Note that the connection parameter client_encoding (which sets the
|
||||
text encoding for the connection) may be set but must be "UTF8",
|
||||
matching with the same rules as Postgres. It is an error to provide
|
||||
any other value.
|
||||
|
||||
In addition to the parameters listed above, any run-time parameter that can be
|
||||
set at backend start time can be set in the connection string. For more
|
||||
information, see
|
||||
http://www.postgresql.org/docs/current/static/runtime-config.html.
|
||||
|
||||
Most environment variables as specified at http://www.postgresql.org/docs/current/static/libpq-envars.html
|
||||
supported by libpq are also supported by pq. If any of the environment
|
||||
variables not supported by pq are set, pq will panic during connection
|
||||
establishment. Environment variables have a lower precedence than explicitly
|
||||
provided connection parameters.
|
||||
|
||||
The pgpass mechanism as described in http://www.postgresql.org/docs/current/static/libpq-pgpass.html
|
||||
is supported, but on Windows PGPASSFILE must be specified explicitly.
|
||||
|
||||
|
||||
Queries
|
||||
|
||||
|
||||
database/sql does not dictate any specific format for parameter
|
||||
markers in query strings, and pq uses the Postgres-native ordinal markers,
|
||||
as shown above. The same marker can be reused for the same parameter:
|
||||
|
||||
rows, err := db.Query(`SELECT name FROM users WHERE favorite_fruit = $1
|
||||
OR age BETWEEN $2 AND $2 + 3`, "orange", 64)
|
||||
|
||||
pq does not support the LastInsertId() method of the Result type in database/sql.
|
||||
To return the identifier of an INSERT (or UPDATE or DELETE), use the Postgres
|
||||
RETURNING clause with a standard Query or QueryRow call:
|
||||
|
||||
var userid int
|
||||
err := db.QueryRow(`INSERT INTO users(name, favorite_fruit, age)
|
||||
VALUES('beatrice', 'starfruit', 93) RETURNING id`).Scan(&userid)
|
||||
|
||||
For more details on RETURNING, see the Postgres documentation:
|
||||
|
||||
http://www.postgresql.org/docs/current/static/sql-insert.html
|
||||
http://www.postgresql.org/docs/current/static/sql-update.html
|
||||
http://www.postgresql.org/docs/current/static/sql-delete.html
|
||||
|
||||
For additional instructions on querying see the documentation for the database/sql package.
|
||||
|
||||
|
||||
Data Types
|
||||
|
||||
|
||||
Parameters pass through driver.DefaultParameterConverter before they are handled
|
||||
by this package. When the binary_parameters connection option is enabled,
|
||||
[]byte values are sent directly to the backend as data in binary format.
|
||||
|
||||
This package returns the following types for values from the PostgreSQL backend:
|
||||
|
||||
- integer types smallint, integer, and bigint are returned as int64
|
||||
- floating-point types real and double precision are returned as float64
|
||||
- character types char, varchar, and text are returned as string
|
||||
- temporal types date, time, timetz, timestamp, and timestamptz are
|
||||
returned as time.Time
|
||||
- the boolean type is returned as bool
|
||||
- the bytea type is returned as []byte
|
||||
|
||||
All other types are returned directly from the backend as []byte values in text format.
|
||||
|
||||
|
||||
Errors
|
||||
|
||||
|
||||
pq may return errors of type *pq.Error which can be interrogated for error details:
|
||||
|
||||
if err, ok := err.(*pq.Error); ok {
|
||||
fmt.Println("pq error:", err.Code.Name())
|
||||
}
|
||||
|
||||
See the pq.Error type for details.
|
||||
|
||||
|
||||
Bulk imports
|
||||
|
||||
You can perform bulk imports by preparing a statement returned by pq.CopyIn (or
|
||||
pq.CopyInSchema) in an explicit transaction (sql.Tx). The returned statement
|
||||
handle can then be repeatedly "executed" to copy data into the target table.
|
||||
After all data has been processed you should call Exec() once with no arguments
|
||||
to flush all buffered data. Any call to Exec() might return an error which
|
||||
should be handled appropriately, but because of the internal buffering an error
|
||||
returned by Exec() might not be related to the data passed in the call that
|
||||
failed.
|
||||
|
||||
CopyIn uses COPY FROM internally. It is not possible to COPY outside of an
|
||||
explicit transaction in pq.
|
||||
|
||||
Usage example:
|
||||
|
||||
txn, err := db.Begin()
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
stmt, err := txn.Prepare(pq.CopyIn("users", "name", "age"))
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
for _, user := range users {
|
||||
_, err = stmt.Exec(user.Name, int64(user.Age))
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
_, err = stmt.Exec()
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
err = stmt.Close()
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
err = txn.Commit()
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
|
||||
Notifications
|
||||
|
||||
|
||||
PostgreSQL supports a simple publish/subscribe model over database
|
||||
connections. See http://www.postgresql.org/docs/current/static/sql-notify.html
|
||||
for more information about the general mechanism.
|
||||
|
||||
To start listening for notifications, you first have to open a new connection
|
||||
to the database by calling NewListener. This connection can not be used for
|
||||
anything other than LISTEN / NOTIFY. Calling Listen will open a "notification
|
||||
channel"; once a notification channel is open, a notification generated on that
|
||||
channel will effect a send on the Listener.Notify channel. A notification
|
||||
channel will remain open until Unlisten is called, though connection loss might
|
||||
result in some notifications being lost. To solve this problem, Listener sends
|
||||
a nil pointer over the Notify channel any time the connection is re-established
|
||||
following a connection loss. The application can get information about the
|
||||
state of the underlying connection by setting an event callback in the call to
|
||||
NewListener.
|
||||
|
||||
A single Listener can safely be used from concurrent goroutines, which means
|
||||
that there is often no need to create more than one Listener in your
|
||||
application. However, a Listener is always connected to a single database, so
|
||||
you will need to create a new Listener instance for every database you want to
|
||||
receive notifications in.
|
||||
|
||||
The channel name in both Listen and Unlisten is case sensitive, and can contain
|
||||
any characters legal in an identifier (see
|
||||
http://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
|
||||
for more information). Note that the channel name will be truncated to 63
|
||||
bytes by the PostgreSQL server.
|
||||
|
||||
You can find a complete, working example of Listener usage at
|
||||
http://godoc.org/github.com/lib/pq/example/listen.
|
||||
|
||||
*/
|
||||
package pq
|
||||
|
|
@ -0,0 +1,603 @@
|
|||
package pq
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"database/sql/driver"
|
||||
"encoding/binary"
|
||||
"encoding/hex"
|
||||
"errors"
|
||||
"fmt"
|
||||
"math"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/lib/pq/oid"
|
||||
)
|
||||
|
||||
func binaryEncode(parameterStatus *parameterStatus, x interface{}) []byte {
|
||||
switch v := x.(type) {
|
||||
case []byte:
|
||||
return v
|
||||
default:
|
||||
return encode(parameterStatus, x, oid.T_unknown)
|
||||
}
|
||||
}
|
||||
|
||||
func encode(parameterStatus *parameterStatus, x interface{}, pgtypOid oid.Oid) []byte {
|
||||
switch v := x.(type) {
|
||||
case int64:
|
||||
return strconv.AppendInt(nil, v, 10)
|
||||
case float64:
|
||||
return strconv.AppendFloat(nil, v, 'f', -1, 64)
|
||||
case []byte:
|
||||
if pgtypOid == oid.T_bytea {
|
||||
return encodeBytea(parameterStatus.serverVersion, v)
|
||||
}
|
||||
|
||||
return v
|
||||
case string:
|
||||
if pgtypOid == oid.T_bytea {
|
||||
return encodeBytea(parameterStatus.serverVersion, []byte(v))
|
||||
}
|
||||
|
||||
return []byte(v)
|
||||
case bool:
|
||||
return strconv.AppendBool(nil, v)
|
||||
case time.Time:
|
||||
return formatTs(v)
|
||||
|
||||
default:
|
||||
errorf("encode: unknown type for %T", v)
|
||||
}
|
||||
|
||||
panic("not reached")
|
||||
}
|
||||
|
||||
func decode(parameterStatus *parameterStatus, s []byte, typ oid.Oid, f format) interface{} {
|
||||
switch f {
|
||||
case formatBinary:
|
||||
return binaryDecode(parameterStatus, s, typ)
|
||||
case formatText:
|
||||
return textDecode(parameterStatus, s, typ)
|
||||
default:
|
||||
panic("not reached")
|
||||
}
|
||||
}
|
||||
|
||||
func binaryDecode(parameterStatus *parameterStatus, s []byte, typ oid.Oid) interface{} {
|
||||
switch typ {
|
||||
case oid.T_bytea:
|
||||
return s
|
||||
case oid.T_int8:
|
||||
return int64(binary.BigEndian.Uint64(s))
|
||||
case oid.T_int4:
|
||||
return int64(int32(binary.BigEndian.Uint32(s)))
|
||||
case oid.T_int2:
|
||||
return int64(int16(binary.BigEndian.Uint16(s)))
|
||||
case oid.T_uuid:
|
||||
b, err := decodeUUIDBinary(s)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return b
|
||||
|
||||
default:
|
||||
errorf("don't know how to decode binary parameter of type %d", uint32(typ))
|
||||
}
|
||||
|
||||
panic("not reached")
|
||||
}
|
||||
|
||||
func textDecode(parameterStatus *parameterStatus, s []byte, typ oid.Oid) interface{} {
|
||||
switch typ {
|
||||
case oid.T_char, oid.T_varchar, oid.T_text:
|
||||
return string(s)
|
||||
case oid.T_bytea:
|
||||
b, err := parseBytea(s)
|
||||
if err != nil {
|
||||
errorf("%s", err)
|
||||
}
|
||||
return b
|
||||
case oid.T_timestamptz:
|
||||
return parseTs(parameterStatus.currentLocation, string(s))
|
||||
case oid.T_timestamp, oid.T_date:
|
||||
return parseTs(nil, string(s))
|
||||
case oid.T_time:
|
||||
return mustParse("15:04:05", typ, s)
|
||||
case oid.T_timetz:
|
||||
return mustParse("15:04:05-07", typ, s)
|
||||
case oid.T_bool:
|
||||
return s[0] == 't'
|
||||
case oid.T_int8, oid.T_int4, oid.T_int2:
|
||||
i, err := strconv.ParseInt(string(s), 10, 64)
|
||||
if err != nil {
|
||||
errorf("%s", err)
|
||||
}
|
||||
return i
|
||||
case oid.T_float4, oid.T_float8:
|
||||
bits := 64
|
||||
if typ == oid.T_float4 {
|
||||
bits = 32
|
||||
}
|
||||
f, err := strconv.ParseFloat(string(s), bits)
|
||||
if err != nil {
|
||||
errorf("%s", err)
|
||||
}
|
||||
return f
|
||||
}
|
||||
|
||||
return s
|
||||
}
|
||||
|
||||
// appendEncodedText encodes item in text format as required by COPY
|
||||
// and appends to buf
|
||||
func appendEncodedText(parameterStatus *parameterStatus, buf []byte, x interface{}) []byte {
|
||||
switch v := x.(type) {
|
||||
case int64:
|
||||
return strconv.AppendInt(buf, v, 10)
|
||||
case float64:
|
||||
return strconv.AppendFloat(buf, v, 'f', -1, 64)
|
||||
case []byte:
|
||||
encodedBytea := encodeBytea(parameterStatus.serverVersion, v)
|
||||
return appendEscapedText(buf, string(encodedBytea))
|
||||
case string:
|
||||
return appendEscapedText(buf, v)
|
||||
case bool:
|
||||
return strconv.AppendBool(buf, v)
|
||||
case time.Time:
|
||||
return append(buf, formatTs(v)...)
|
||||
case nil:
|
||||
return append(buf, "\\N"...)
|
||||
default:
|
||||
errorf("encode: unknown type for %T", v)
|
||||
}
|
||||
|
||||
panic("not reached")
|
||||
}
|
||||
|
||||
func appendEscapedText(buf []byte, text string) []byte {
|
||||
escapeNeeded := false
|
||||
startPos := 0
|
||||
var c byte
|
||||
|
||||
// check if we need to escape
|
||||
for i := 0; i < len(text); i++ {
|
||||
c = text[i]
|
||||
if c == '\\' || c == '\n' || c == '\r' || c == '\t' {
|
||||
escapeNeeded = true
|
||||
startPos = i
|
||||
break
|
||||
}
|
||||
}
|
||||
if !escapeNeeded {
|
||||
return append(buf, text...)
|
||||
}
|
||||
|
||||
// copy till first char to escape, iterate the rest
|
||||
result := append(buf, text[:startPos]...)
|
||||
for i := startPos; i < len(text); i++ {
|
||||
c = text[i]
|
||||
switch c {
|
||||
case '\\':
|
||||
result = append(result, '\\', '\\')
|
||||
case '\n':
|
||||
result = append(result, '\\', 'n')
|
||||
case '\r':
|
||||
result = append(result, '\\', 'r')
|
||||
case '\t':
|
||||
result = append(result, '\\', 't')
|
||||
default:
|
||||
result = append(result, c)
|
||||
}
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
func mustParse(f string, typ oid.Oid, s []byte) time.Time {
|
||||
str := string(s)
|
||||
|
||||
// check for a 30-minute-offset timezone
|
||||
if (typ == oid.T_timestamptz || typ == oid.T_timetz) &&
|
||||
str[len(str)-3] == ':' {
|
||||
f += ":00"
|
||||
}
|
||||
t, err := time.Parse(f, str)
|
||||
if err != nil {
|
||||
errorf("decode: %s", err)
|
||||
}
|
||||
return t
|
||||
}
|
||||
|
||||
var errInvalidTimestamp = errors.New("invalid timestamp")
|
||||
|
||||
type timestampParser struct {
|
||||
err error
|
||||
}
|
||||
|
||||
func (p *timestampParser) expect(str string, char byte, pos int) {
|
||||
if p.err != nil {
|
||||
return
|
||||
}
|
||||
if pos+1 > len(str) {
|
||||
p.err = errInvalidTimestamp
|
||||
return
|
||||
}
|
||||
if c := str[pos]; c != char && p.err == nil {
|
||||
p.err = fmt.Errorf("expected '%v' at position %v; got '%v'", char, pos, c)
|
||||
}
|
||||
}
|
||||
|
||||
func (p *timestampParser) mustAtoi(str string, begin int, end int) int {
|
||||
if p.err != nil {
|
||||
return 0
|
||||
}
|
||||
if begin < 0 || end < 0 || begin > end || end > len(str) {
|
||||
p.err = errInvalidTimestamp
|
||||
return 0
|
||||
}
|
||||
result, err := strconv.Atoi(str[begin:end])
|
||||
if err != nil {
|
||||
if p.err == nil {
|
||||
p.err = fmt.Errorf("expected number; got '%v'", str)
|
||||
}
|
||||
return 0
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
// The location cache caches the time zones typically used by the client.
|
||||
type locationCache struct {
|
||||
cache map[int]*time.Location
|
||||
lock sync.Mutex
|
||||
}
|
||||
|
||||
// All connections share the same list of timezones. Benchmarking shows that
|
||||
// about 5% speed could be gained by putting the cache in the connection and
|
||||
// losing the mutex, at the cost of a small amount of memory and a somewhat
|
||||
// significant increase in code complexity.
|
||||
var globalLocationCache = newLocationCache()
|
||||
|
||||
func newLocationCache() *locationCache {
|
||||
return &locationCache{cache: make(map[int]*time.Location)}
|
||||
}
|
||||
|
||||
// Returns the cached timezone for the specified offset, creating and caching
|
||||
// it if necessary.
|
||||
func (c *locationCache) getLocation(offset int) *time.Location {
|
||||
c.lock.Lock()
|
||||
defer c.lock.Unlock()
|
||||
|
||||
location, ok := c.cache[offset]
|
||||
if !ok {
|
||||
location = time.FixedZone("", offset)
|
||||
c.cache[offset] = location
|
||||
}
|
||||
|
||||
return location
|
||||
}
|
||||
|
||||
var infinityTsEnabled = false
|
||||
var infinityTsNegative time.Time
|
||||
var infinityTsPositive time.Time
|
||||
|
||||
const (
|
||||
infinityTsEnabledAlready = "pq: infinity timestamp enabled already"
|
||||
infinityTsNegativeMustBeSmaller = "pq: infinity timestamp: negative value must be smaller (before) than positive"
|
||||
)
|
||||
|
||||
// EnableInfinityTs controls the handling of Postgres' "-infinity" and
|
||||
// "infinity" "timestamp"s.
|
||||
//
|
||||
// If EnableInfinityTs is not called, "-infinity" and "infinity" will return
|
||||
// []byte("-infinity") and []byte("infinity") respectively, and potentially
|
||||
// cause error "sql: Scan error on column index 0: unsupported driver -> Scan
|
||||
// pair: []uint8 -> *time.Time", when scanning into a time.Time value.
|
||||
//
|
||||
// Once EnableInfinityTs has been called, all connections created using this
|
||||
// driver will decode Postgres' "-infinity" and "infinity" for "timestamp",
|
||||
// "timestamp with time zone" and "date" types to the predefined minimum and
|
||||
// maximum times, respectively. When encoding time.Time values, any time which
|
||||
// equals or precedes the predefined minimum time will be encoded to
|
||||
// "-infinity". Any values at or past the maximum time will similarly be
|
||||
// encoded to "infinity".
|
||||
//
|
||||
// If EnableInfinityTs is called with negative >= positive, it will panic.
|
||||
// Calling EnableInfinityTs after a connection has been established results in
|
||||
// undefined behavior. If EnableInfinityTs is called more than once, it will
|
||||
// panic.
|
||||
func EnableInfinityTs(negative time.Time, positive time.Time) {
|
||||
if infinityTsEnabled {
|
||||
panic(infinityTsEnabledAlready)
|
||||
}
|
||||
if !negative.Before(positive) {
|
||||
panic(infinityTsNegativeMustBeSmaller)
|
||||
}
|
||||
infinityTsEnabled = true
|
||||
infinityTsNegative = negative
|
||||
infinityTsPositive = positive
|
||||
}
|
||||
|
||||
/*
|
||||
* Testing might want to toggle infinityTsEnabled
|
||||
*/
|
||||
func disableInfinityTs() {
|
||||
infinityTsEnabled = false
|
||||
}
|
||||
|
||||
// This is a time function specific to the Postgres default DateStyle
|
||||
// setting ("ISO, MDY"), the only one we currently support. This
|
||||
// accounts for the discrepancies between the parsing available with
|
||||
// time.Parse and the Postgres date formatting quirks.
|
||||
func parseTs(currentLocation *time.Location, str string) interface{} {
|
||||
switch str {
|
||||
case "-infinity":
|
||||
if infinityTsEnabled {
|
||||
return infinityTsNegative
|
||||
}
|
||||
return []byte(str)
|
||||
case "infinity":
|
||||
if infinityTsEnabled {
|
||||
return infinityTsPositive
|
||||
}
|
||||
return []byte(str)
|
||||
}
|
||||
t, err := ParseTimestamp(currentLocation, str)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return t
|
||||
}
|
||||
|
||||
// ParseTimestamp parses Postgres' text format. It returns a time.Time in
|
||||
// currentLocation iff that time's offset agrees with the offset sent from the
|
||||
// Postgres server. Otherwise, ParseTimestamp returns a time.Time with the
|
||||
// fixed offset offset provided by the Postgres server.
|
||||
func ParseTimestamp(currentLocation *time.Location, str string) (time.Time, error) {
|
||||
p := timestampParser{}
|
||||
|
||||
monSep := strings.IndexRune(str, '-')
|
||||
// this is Gregorian year, not ISO Year
|
||||
// In Gregorian system, the year 1 BC is followed by AD 1
|
||||
year := p.mustAtoi(str, 0, monSep)
|
||||
daySep := monSep + 3
|
||||
month := p.mustAtoi(str, monSep+1, daySep)
|
||||
p.expect(str, '-', daySep)
|
||||
timeSep := daySep + 3
|
||||
day := p.mustAtoi(str, daySep+1, timeSep)
|
||||
|
||||
minLen := monSep + len("01-01") + 1
|
||||
|
||||
isBC := strings.HasSuffix(str, " BC")
|
||||
if isBC {
|
||||
minLen += 3
|
||||
}
|
||||
|
||||
var hour, minute, second int
|
||||
if len(str) > minLen {
|
||||
p.expect(str, ' ', timeSep)
|
||||
minSep := timeSep + 3
|
||||
p.expect(str, ':', minSep)
|
||||
hour = p.mustAtoi(str, timeSep+1, minSep)
|
||||
secSep := minSep + 3
|
||||
p.expect(str, ':', secSep)
|
||||
minute = p.mustAtoi(str, minSep+1, secSep)
|
||||
secEnd := secSep + 3
|
||||
second = p.mustAtoi(str, secSep+1, secEnd)
|
||||
}
|
||||
remainderIdx := monSep + len("01-01 00:00:00") + 1
|
||||
// Three optional (but ordered) sections follow: the
|
||||
// fractional seconds, the time zone offset, and the BC
|
||||
// designation. We set them up here and adjust the other
|
||||
// offsets if the preceding sections exist.
|
||||
|
||||
nanoSec := 0
|
||||
tzOff := 0
|
||||
|
||||
if remainderIdx < len(str) && str[remainderIdx] == '.' {
|
||||
fracStart := remainderIdx + 1
|
||||
fracOff := strings.IndexAny(str[fracStart:], "-+ ")
|
||||
if fracOff < 0 {
|
||||
fracOff = len(str) - fracStart
|
||||
}
|
||||
fracSec := p.mustAtoi(str, fracStart, fracStart+fracOff)
|
||||
nanoSec = fracSec * (1000000000 / int(math.Pow(10, float64(fracOff))))
|
||||
|
||||
remainderIdx += fracOff + 1
|
||||
}
|
||||
if tzStart := remainderIdx; tzStart < len(str) && (str[tzStart] == '-' || str[tzStart] == '+') {
|
||||
// time zone separator is always '-' or '+' (UTC is +00)
|
||||
var tzSign int
|
||||
switch c := str[tzStart]; c {
|
||||
case '-':
|
||||
tzSign = -1
|
||||
case '+':
|
||||
tzSign = +1
|
||||
default:
|
||||
return time.Time{}, fmt.Errorf("expected '-' or '+' at position %v; got %v", tzStart, c)
|
||||
}
|
||||
tzHours := p.mustAtoi(str, tzStart+1, tzStart+3)
|
||||
remainderIdx += 3
|
||||
var tzMin, tzSec int
|
||||
if remainderIdx < len(str) && str[remainderIdx] == ':' {
|
||||
tzMin = p.mustAtoi(str, remainderIdx+1, remainderIdx+3)
|
||||
remainderIdx += 3
|
||||
}
|
||||
if remainderIdx < len(str) && str[remainderIdx] == ':' {
|
||||
tzSec = p.mustAtoi(str, remainderIdx+1, remainderIdx+3)
|
||||
remainderIdx += 3
|
||||
}
|
||||
tzOff = tzSign * ((tzHours * 60 * 60) + (tzMin * 60) + tzSec)
|
||||
}
|
||||
var isoYear int
|
||||
|
||||
if isBC {
|
||||
isoYear = 1 - year
|
||||
remainderIdx += 3
|
||||
} else {
|
||||
isoYear = year
|
||||
}
|
||||
if remainderIdx < len(str) {
|
||||
return time.Time{}, fmt.Errorf("expected end of input, got %v", str[remainderIdx:])
|
||||
}
|
||||
t := time.Date(isoYear, time.Month(month), day,
|
||||
hour, minute, second, nanoSec,
|
||||
globalLocationCache.getLocation(tzOff))
|
||||
|
||||
if currentLocation != nil {
|
||||
// Set the location of the returned Time based on the session's
|
||||
// TimeZone value, but only if the local time zone database agrees with
|
||||
// the remote database on the offset.
|
||||
lt := t.In(currentLocation)
|
||||
_, newOff := lt.Zone()
|
||||
if newOff == tzOff {
|
||||
t = lt
|
||||
}
|
||||
}
|
||||
|
||||
return t, p.err
|
||||
}
|
||||
|
||||
// formatTs formats t into a format postgres understands.
|
||||
func formatTs(t time.Time) []byte {
|
||||
if infinityTsEnabled {
|
||||
// t <= -infinity : ! (t > -infinity)
|
||||
if !t.After(infinityTsNegative) {
|
||||
return []byte("-infinity")
|
||||
}
|
||||
// t >= infinity : ! (!t < infinity)
|
||||
if !t.Before(infinityTsPositive) {
|
||||
return []byte("infinity")
|
||||
}
|
||||
}
|
||||
return FormatTimestamp(t)
|
||||
}
|
||||
|
||||
// FormatTimestamp formats t into Postgres' text format for timestamps.
|
||||
func FormatTimestamp(t time.Time) []byte {
|
||||
// Need to send dates before 0001 A.D. with " BC" suffix, instead of the
|
||||
// minus sign preferred by Go.
|
||||
// Beware, "0000" in ISO is "1 BC", "-0001" is "2 BC" and so on
|
||||
bc := false
|
||||
if t.Year() <= 0 {
|
||||
// flip year sign, and add 1, e.g: "0" will be "1", and "-10" will be "11"
|
||||
t = t.AddDate((-t.Year())*2+1, 0, 0)
|
||||
bc = true
|
||||
}
|
||||
b := []byte(t.Format("2006-01-02 15:04:05.999999999Z07:00"))
|
||||
|
||||
_, offset := t.Zone()
|
||||
offset = offset % 60
|
||||
if offset != 0 {
|
||||
// RFC3339Nano already printed the minus sign
|
||||
if offset < 0 {
|
||||
offset = -offset
|
||||
}
|
||||
|
||||
b = append(b, ':')
|
||||
if offset < 10 {
|
||||
b = append(b, '0')
|
||||
}
|
||||
b = strconv.AppendInt(b, int64(offset), 10)
|
||||
}
|
||||
|
||||
if bc {
|
||||
b = append(b, " BC"...)
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
// Parse a bytea value received from the server. Both "hex" and the legacy
|
||||
// "escape" format are supported.
|
||||
func parseBytea(s []byte) (result []byte, err error) {
|
||||
if len(s) >= 2 && bytes.Equal(s[:2], []byte("\\x")) {
|
||||
// bytea_output = hex
|
||||
s = s[2:] // trim off leading "\\x"
|
||||
result = make([]byte, hex.DecodedLen(len(s)))
|
||||
_, err := hex.Decode(result, s)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
} else {
|
||||
// bytea_output = escape
|
||||
for len(s) > 0 {
|
||||
if s[0] == '\\' {
|
||||
// escaped '\\'
|
||||
if len(s) >= 2 && s[1] == '\\' {
|
||||
result = append(result, '\\')
|
||||
s = s[2:]
|
||||
continue
|
||||
}
|
||||
|
||||
// '\\' followed by an octal number
|
||||
if len(s) < 4 {
|
||||
return nil, fmt.Errorf("invalid bytea sequence %v", s)
|
||||
}
|
||||
r, err := strconv.ParseInt(string(s[1:4]), 8, 9)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("could not parse bytea value: %s", err.Error())
|
||||
}
|
||||
result = append(result, byte(r))
|
||||
s = s[4:]
|
||||
} else {
|
||||
// We hit an unescaped, raw byte. Try to read in as many as
|
||||
// possible in one go.
|
||||
i := bytes.IndexByte(s, '\\')
|
||||
if i == -1 {
|
||||
result = append(result, s...)
|
||||
break
|
||||
}
|
||||
result = append(result, s[:i]...)
|
||||
s = s[i:]
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return result, nil
|
||||
}
|
||||
|
||||
func encodeBytea(serverVersion int, v []byte) (result []byte) {
|
||||
if serverVersion >= 90000 {
|
||||
// Use the hex format if we know that the server supports it
|
||||
result = make([]byte, 2+hex.EncodedLen(len(v)))
|
||||
result[0] = '\\'
|
||||
result[1] = 'x'
|
||||
hex.Encode(result[2:], v)
|
||||
} else {
|
||||
// .. or resort to "escape"
|
||||
for _, b := range v {
|
||||
if b == '\\' {
|
||||
result = append(result, '\\', '\\')
|
||||
} else if b < 0x20 || b > 0x7e {
|
||||
result = append(result, []byte(fmt.Sprintf("\\%03o", b))...)
|
||||
} else {
|
||||
result = append(result, b)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return result
|
||||
}
|
||||
|
||||
// NullTime represents a time.Time that may be null. NullTime implements the
|
||||
// sql.Scanner interface so it can be used as a scan destination, similar to
|
||||
// sql.NullString.
|
||||
type NullTime struct {
|
||||
Time time.Time
|
||||
Valid bool // Valid is true if Time is not NULL
|
||||
}
|
||||
|
||||
// Scan implements the Scanner interface.
|
||||
func (nt *NullTime) Scan(value interface{}) error {
|
||||
nt.Time, nt.Valid = value.(time.Time)
|
||||
return nil
|
||||
}
|
||||
|
||||
// Value implements the driver Valuer interface.
|
||||
func (nt NullTime) Value() (driver.Value, error) {
|
||||
if !nt.Valid {
|
||||
return nil, nil
|
||||
}
|
||||
return nt.Time, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,515 @@
|
|||
package pq
|
||||
|
||||
import (
|
||||
"database/sql/driver"
|
||||
"fmt"
|
||||
"io"
|
||||
"net"
|
||||
"runtime"
|
||||
)
|
||||
|
||||
// Error severities
|
||||
const (
|
||||
Efatal = "FATAL"
|
||||
Epanic = "PANIC"
|
||||
Ewarning = "WARNING"
|
||||
Enotice = "NOTICE"
|
||||
Edebug = "DEBUG"
|
||||
Einfo = "INFO"
|
||||
Elog = "LOG"
|
||||
)
|
||||
|
||||
// Error represents an error communicating with the server.
|
||||
//
|
||||
// See http://www.postgresql.org/docs/current/static/protocol-error-fields.html for details of the fields
|
||||
type Error struct {
|
||||
Severity string
|
||||
Code ErrorCode
|
||||
Message string
|
||||
Detail string
|
||||
Hint string
|
||||
Position string
|
||||
InternalPosition string
|
||||
InternalQuery string
|
||||
Where string
|
||||
Schema string
|
||||
Table string
|
||||
Column string
|
||||
DataTypeName string
|
||||
Constraint string
|
||||
File string
|
||||
Line string
|
||||
Routine string
|
||||
}
|
||||
|
||||
// ErrorCode is a five-character error code.
|
||||
type ErrorCode string
|
||||
|
||||
// Name returns a more human friendly rendering of the error code, namely the
|
||||
// "condition name".
|
||||
//
|
||||
// See http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html for
|
||||
// details.
|
||||
func (ec ErrorCode) Name() string {
|
||||
return errorCodeNames[ec]
|
||||
}
|
||||
|
||||
// ErrorClass is only the class part of an error code.
|
||||
type ErrorClass string
|
||||
|
||||
// Name returns the condition name of an error class. It is equivalent to the
|
||||
// condition name of the "standard" error code (i.e. the one having the last
|
||||
// three characters "000").
|
||||
func (ec ErrorClass) Name() string {
|
||||
return errorCodeNames[ErrorCode(ec+"000")]
|
||||
}
|
||||
|
||||
// Class returns the error class, e.g. "28".
|
||||
//
|
||||
// See http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html for
|
||||
// details.
|
||||
func (ec ErrorCode) Class() ErrorClass {
|
||||
return ErrorClass(ec[0:2])
|
||||
}
|
||||
|
||||
// errorCodeNames is a mapping between the five-character error codes and the
|
||||
// human readable "condition names". It is derived from the list at
|
||||
// http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html
|
||||
var errorCodeNames = map[ErrorCode]string{
|
||||
// Class 00 - Successful Completion
|
||||
"00000": "successful_completion",
|
||||
// Class 01 - Warning
|
||||
"01000": "warning",
|
||||
"0100C": "dynamic_result_sets_returned",
|
||||
"01008": "implicit_zero_bit_padding",
|
||||
"01003": "null_value_eliminated_in_set_function",
|
||||
"01007": "privilege_not_granted",
|
||||
"01006": "privilege_not_revoked",
|
||||
"01004": "string_data_right_truncation",
|
||||
"01P01": "deprecated_feature",
|
||||
// Class 02 - No Data (this is also a warning class per the SQL standard)
|
||||
"02000": "no_data",
|
||||
"02001": "no_additional_dynamic_result_sets_returned",
|
||||
// Class 03 - SQL Statement Not Yet Complete
|
||||
"03000": "sql_statement_not_yet_complete",
|
||||
// Class 08 - Connection Exception
|
||||
"08000": "connection_exception",
|
||||
"08003": "connection_does_not_exist",
|
||||
"08006": "connection_failure",
|
||||
"08001": "sqlclient_unable_to_establish_sqlconnection",
|
||||
"08004": "sqlserver_rejected_establishment_of_sqlconnection",
|
||||
"08007": "transaction_resolution_unknown",
|
||||
"08P01": "protocol_violation",
|
||||
// Class 09 - Triggered Action Exception
|
||||
"09000": "triggered_action_exception",
|
||||
// Class 0A - Feature Not Supported
|
||||
"0A000": "feature_not_supported",
|
||||
// Class 0B - Invalid Transaction Initiation
|
||||
"0B000": "invalid_transaction_initiation",
|
||||
// Class 0F - Locator Exception
|
||||
"0F000": "locator_exception",
|
||||
"0F001": "invalid_locator_specification",
|
||||
// Class 0L - Invalid Grantor
|
||||
"0L000": "invalid_grantor",
|
||||
"0LP01": "invalid_grant_operation",
|
||||
// Class 0P - Invalid Role Specification
|
||||
"0P000": "invalid_role_specification",
|
||||
// Class 0Z - Diagnostics Exception
|
||||
"0Z000": "diagnostics_exception",
|
||||
"0Z002": "stacked_diagnostics_accessed_without_active_handler",
|
||||
// Class 20 - Case Not Found
|
||||
"20000": "case_not_found",
|
||||
// Class 21 - Cardinality Violation
|
||||
"21000": "cardinality_violation",
|
||||
// Class 22 - Data Exception
|
||||
"22000": "data_exception",
|
||||
"2202E": "array_subscript_error",
|
||||
"22021": "character_not_in_repertoire",
|
||||
"22008": "datetime_field_overflow",
|
||||
"22012": "division_by_zero",
|
||||
"22005": "error_in_assignment",
|
||||
"2200B": "escape_character_conflict",
|
||||
"22022": "indicator_overflow",
|
||||
"22015": "interval_field_overflow",
|
||||
"2201E": "invalid_argument_for_logarithm",
|
||||
"22014": "invalid_argument_for_ntile_function",
|
||||
"22016": "invalid_argument_for_nth_value_function",
|
||||
"2201F": "invalid_argument_for_power_function",
|
||||
"2201G": "invalid_argument_for_width_bucket_function",
|
||||
"22018": "invalid_character_value_for_cast",
|
||||
"22007": "invalid_datetime_format",
|
||||
"22019": "invalid_escape_character",
|
||||
"2200D": "invalid_escape_octet",
|
||||
"22025": "invalid_escape_sequence",
|
||||
"22P06": "nonstandard_use_of_escape_character",
|
||||
"22010": "invalid_indicator_parameter_value",
|
||||
"22023": "invalid_parameter_value",
|
||||
"2201B": "invalid_regular_expression",
|
||||
"2201W": "invalid_row_count_in_limit_clause",
|
||||
"2201X": "invalid_row_count_in_result_offset_clause",
|
||||
"22009": "invalid_time_zone_displacement_value",
|
||||
"2200C": "invalid_use_of_escape_character",
|
||||
"2200G": "most_specific_type_mismatch",
|
||||
"22004": "null_value_not_allowed",
|
||||
"22002": "null_value_no_indicator_parameter",
|
||||
"22003": "numeric_value_out_of_range",
|
||||
"2200H": "sequence_generator_limit_exceeded",
|
||||
"22026": "string_data_length_mismatch",
|
||||
"22001": "string_data_right_truncation",
|
||||
"22011": "substring_error",
|
||||
"22027": "trim_error",
|
||||
"22024": "unterminated_c_string",
|
||||
"2200F": "zero_length_character_string",
|
||||
"22P01": "floating_point_exception",
|
||||
"22P02": "invalid_text_representation",
|
||||
"22P03": "invalid_binary_representation",
|
||||
"22P04": "bad_copy_file_format",
|
||||
"22P05": "untranslatable_character",
|
||||
"2200L": "not_an_xml_document",
|
||||
"2200M": "invalid_xml_document",
|
||||
"2200N": "invalid_xml_content",
|
||||
"2200S": "invalid_xml_comment",
|
||||
"2200T": "invalid_xml_processing_instruction",
|
||||
// Class 23 - Integrity Constraint Violation
|
||||
"23000": "integrity_constraint_violation",
|
||||
"23001": "restrict_violation",
|
||||
"23502": "not_null_violation",
|
||||
"23503": "foreign_key_violation",
|
||||
"23505": "unique_violation",
|
||||
"23514": "check_violation",
|
||||
"23P01": "exclusion_violation",
|
||||
// Class 24 - Invalid Cursor State
|
||||
"24000": "invalid_cursor_state",
|
||||
// Class 25 - Invalid Transaction State
|
||||
"25000": "invalid_transaction_state",
|
||||
"25001": "active_sql_transaction",
|
||||
"25002": "branch_transaction_already_active",
|
||||
"25008": "held_cursor_requires_same_isolation_level",
|
||||
"25003": "inappropriate_access_mode_for_branch_transaction",
|
||||
"25004": "inappropriate_isolation_level_for_branch_transaction",
|
||||
"25005": "no_active_sql_transaction_for_branch_transaction",
|
||||
"25006": "read_only_sql_transaction",
|
||||
"25007": "schema_and_data_statement_mixing_not_supported",
|
||||
"25P01": "no_active_sql_transaction",
|
||||
"25P02": "in_failed_sql_transaction",
|
||||
// Class 26 - Invalid SQL Statement Name
|
||||
"26000": "invalid_sql_statement_name",
|
||||
// Class 27 - Triggered Data Change Violation
|
||||
"27000": "triggered_data_change_violation",
|
||||
// Class 28 - Invalid Authorization Specification
|
||||
"28000": "invalid_authorization_specification",
|
||||
"28P01": "invalid_password",
|
||||
// Class 2B - Dependent Privilege Descriptors Still Exist
|
||||
"2B000": "dependent_privilege_descriptors_still_exist",
|
||||
"2BP01": "dependent_objects_still_exist",
|
||||
// Class 2D - Invalid Transaction Termination
|
||||
"2D000": "invalid_transaction_termination",
|
||||
// Class 2F - SQL Routine Exception
|
||||
"2F000": "sql_routine_exception",
|
||||
"2F005": "function_executed_no_return_statement",
|
||||
"2F002": "modifying_sql_data_not_permitted",
|
||||
"2F003": "prohibited_sql_statement_attempted",
|
||||
"2F004": "reading_sql_data_not_permitted",
|
||||
// Class 34 - Invalid Cursor Name
|
||||
"34000": "invalid_cursor_name",
|
||||
// Class 38 - External Routine Exception
|
||||
"38000": "external_routine_exception",
|
||||
"38001": "containing_sql_not_permitted",
|
||||
"38002": "modifying_sql_data_not_permitted",
|
||||
"38003": "prohibited_sql_statement_attempted",
|
||||
"38004": "reading_sql_data_not_permitted",
|
||||
// Class 39 - External Routine Invocation Exception
|
||||
"39000": "external_routine_invocation_exception",
|
||||
"39001": "invalid_sqlstate_returned",
|
||||
"39004": "null_value_not_allowed",
|
||||
"39P01": "trigger_protocol_violated",
|
||||
"39P02": "srf_protocol_violated",
|
||||
// Class 3B - Savepoint Exception
|
||||
"3B000": "savepoint_exception",
|
||||
"3B001": "invalid_savepoint_specification",
|
||||
// Class 3D - Invalid Catalog Name
|
||||
"3D000": "invalid_catalog_name",
|
||||
// Class 3F - Invalid Schema Name
|
||||
"3F000": "invalid_schema_name",
|
||||
// Class 40 - Transaction Rollback
|
||||
"40000": "transaction_rollback",
|
||||
"40002": "transaction_integrity_constraint_violation",
|
||||
"40001": "serialization_failure",
|
||||
"40003": "statement_completion_unknown",
|
||||
"40P01": "deadlock_detected",
|
||||
// Class 42 - Syntax Error or Access Rule Violation
|
||||
"42000": "syntax_error_or_access_rule_violation",
|
||||
"42601": "syntax_error",
|
||||
"42501": "insufficient_privilege",
|
||||
"42846": "cannot_coerce",
|
||||
"42803": "grouping_error",
|
||||
"42P20": "windowing_error",
|
||||
"42P19": "invalid_recursion",
|
||||
"42830": "invalid_foreign_key",
|
||||
"42602": "invalid_name",
|
||||
"42622": "name_too_long",
|
||||
"42939": "reserved_name",
|
||||
"42804": "datatype_mismatch",
|
||||
"42P18": "indeterminate_datatype",
|
||||
"42P21": "collation_mismatch",
|
||||
"42P22": "indeterminate_collation",
|
||||
"42809": "wrong_object_type",
|
||||
"42703": "undefined_column",
|
||||
"42883": "undefined_function",
|
||||
"42P01": "undefined_table",
|
||||
"42P02": "undefined_parameter",
|
||||
"42704": "undefined_object",
|
||||
"42701": "duplicate_column",
|
||||
"42P03": "duplicate_cursor",
|
||||
"42P04": "duplicate_database",
|
||||
"42723": "duplicate_function",
|
||||
"42P05": "duplicate_prepared_statement",
|
||||
"42P06": "duplicate_schema",
|
||||
"42P07": "duplicate_table",
|
||||
"42712": "duplicate_alias",
|
||||
"42710": "duplicate_object",
|
||||
"42702": "ambiguous_column",
|
||||
"42725": "ambiguous_function",
|
||||
"42P08": "ambiguous_parameter",
|
||||
"42P09": "ambiguous_alias",
|
||||
"42P10": "invalid_column_reference",
|
||||
"42611": "invalid_column_definition",
|
||||
"42P11": "invalid_cursor_definition",
|
||||
"42P12": "invalid_database_definition",
|
||||
"42P13": "invalid_function_definition",
|
||||
"42P14": "invalid_prepared_statement_definition",
|
||||
"42P15": "invalid_schema_definition",
|
||||
"42P16": "invalid_table_definition",
|
||||
"42P17": "invalid_object_definition",
|
||||
// Class 44 - WITH CHECK OPTION Violation
|
||||
"44000": "with_check_option_violation",
|
||||
// Class 53 - Insufficient Resources
|
||||
"53000": "insufficient_resources",
|
||||
"53100": "disk_full",
|
||||
"53200": "out_of_memory",
|
||||
"53300": "too_many_connections",
|
||||
"53400": "configuration_limit_exceeded",
|
||||
// Class 54 - Program Limit Exceeded
|
||||
"54000": "program_limit_exceeded",
|
||||
"54001": "statement_too_complex",
|
||||
"54011": "too_many_columns",
|
||||
"54023": "too_many_arguments",
|
||||
// Class 55 - Object Not In Prerequisite State
|
||||
"55000": "object_not_in_prerequisite_state",
|
||||
"55006": "object_in_use",
|
||||
"55P02": "cant_change_runtime_param",
|
||||
"55P03": "lock_not_available",
|
||||
// Class 57 - Operator Intervention
|
||||
"57000": "operator_intervention",
|
||||
"57014": "query_canceled",
|
||||
"57P01": "admin_shutdown",
|
||||
"57P02": "crash_shutdown",
|
||||
"57P03": "cannot_connect_now",
|
||||
"57P04": "database_dropped",
|
||||
// Class 58 - System Error (errors external to PostgreSQL itself)
|
||||
"58000": "system_error",
|
||||
"58030": "io_error",
|
||||
"58P01": "undefined_file",
|
||||
"58P02": "duplicate_file",
|
||||
// Class F0 - Configuration File Error
|
||||
"F0000": "config_file_error",
|
||||
"F0001": "lock_file_exists",
|
||||
// Class HV - Foreign Data Wrapper Error (SQL/MED)
|
||||
"HV000": "fdw_error",
|
||||
"HV005": "fdw_column_name_not_found",
|
||||
"HV002": "fdw_dynamic_parameter_value_needed",
|
||||
"HV010": "fdw_function_sequence_error",
|
||||
"HV021": "fdw_inconsistent_descriptor_information",
|
||||
"HV024": "fdw_invalid_attribute_value",
|
||||
"HV007": "fdw_invalid_column_name",
|
||||
"HV008": "fdw_invalid_column_number",
|
||||
"HV004": "fdw_invalid_data_type",
|
||||
"HV006": "fdw_invalid_data_type_descriptors",
|
||||
"HV091": "fdw_invalid_descriptor_field_identifier",
|
||||
"HV00B": "fdw_invalid_handle",
|
||||
"HV00C": "fdw_invalid_option_index",
|
||||
"HV00D": "fdw_invalid_option_name",
|
||||
"HV090": "fdw_invalid_string_length_or_buffer_length",
|
||||
"HV00A": "fdw_invalid_string_format",
|
||||
"HV009": "fdw_invalid_use_of_null_pointer",
|
||||
"HV014": "fdw_too_many_handles",
|
||||
"HV001": "fdw_out_of_memory",
|
||||
"HV00P": "fdw_no_schemas",
|
||||
"HV00J": "fdw_option_name_not_found",
|
||||
"HV00K": "fdw_reply_handle",
|
||||
"HV00Q": "fdw_schema_not_found",
|
||||
"HV00R": "fdw_table_not_found",
|
||||
"HV00L": "fdw_unable_to_create_execution",
|
||||
"HV00M": "fdw_unable_to_create_reply",
|
||||
"HV00N": "fdw_unable_to_establish_connection",
|
||||
// Class P0 - PL/pgSQL Error
|
||||
"P0000": "plpgsql_error",
|
||||
"P0001": "raise_exception",
|
||||
"P0002": "no_data_found",
|
||||
"P0003": "too_many_rows",
|
||||
// Class XX - Internal Error
|
||||
"XX000": "internal_error",
|
||||
"XX001": "data_corrupted",
|
||||
"XX002": "index_corrupted",
|
||||
}
|
||||
|
||||
func parseError(r *readBuf) *Error {
|
||||
err := new(Error)
|
||||
for t := r.byte(); t != 0; t = r.byte() {
|
||||
msg := r.string()
|
||||
switch t {
|
||||
case 'S':
|
||||
err.Severity = msg
|
||||
case 'C':
|
||||
err.Code = ErrorCode(msg)
|
||||
case 'M':
|
||||
err.Message = msg
|
||||
case 'D':
|
||||
err.Detail = msg
|
||||
case 'H':
|
||||
err.Hint = msg
|
||||
case 'P':
|
||||
err.Position = msg
|
||||
case 'p':
|
||||
err.InternalPosition = msg
|
||||
case 'q':
|
||||
err.InternalQuery = msg
|
||||
case 'W':
|
||||
err.Where = msg
|
||||
case 's':
|
||||
err.Schema = msg
|
||||
case 't':
|
||||
err.Table = msg
|
||||
case 'c':
|
||||
err.Column = msg
|
||||
case 'd':
|
||||
err.DataTypeName = msg
|
||||
case 'n':
|
||||
err.Constraint = msg
|
||||
case 'F':
|
||||
err.File = msg
|
||||
case 'L':
|
||||
err.Line = msg
|
||||
case 'R':
|
||||
err.Routine = msg
|
||||
}
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
// Fatal returns true if the Error Severity is fatal.
|
||||
func (err *Error) Fatal() bool {
|
||||
return err.Severity == Efatal
|
||||
}
|
||||
|
||||
// Get implements the legacy PGError interface. New code should use the fields
|
||||
// of the Error struct directly.
|
||||
func (err *Error) Get(k byte) (v string) {
|
||||
switch k {
|
||||
case 'S':
|
||||
return err.Severity
|
||||
case 'C':
|
||||
return string(err.Code)
|
||||
case 'M':
|
||||
return err.Message
|
||||
case 'D':
|
||||
return err.Detail
|
||||
case 'H':
|
||||
return err.Hint
|
||||
case 'P':
|
||||
return err.Position
|
||||
case 'p':
|
||||
return err.InternalPosition
|
||||
case 'q':
|
||||
return err.InternalQuery
|
||||
case 'W':
|
||||
return err.Where
|
||||
case 's':
|
||||
return err.Schema
|
||||
case 't':
|
||||
return err.Table
|
||||
case 'c':
|
||||
return err.Column
|
||||
case 'd':
|
||||
return err.DataTypeName
|
||||
case 'n':
|
||||
return err.Constraint
|
||||
case 'F':
|
||||
return err.File
|
||||
case 'L':
|
||||
return err.Line
|
||||
case 'R':
|
||||
return err.Routine
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (err Error) Error() string {
|
||||
return "pq: " + err.Message
|
||||
}
|
||||
|
||||
// PGError is an interface used by previous versions of pq. It is provided
|
||||
// only to support legacy code. New code should use the Error type.
|
||||
type PGError interface {
|
||||
Error() string
|
||||
Fatal() bool
|
||||
Get(k byte) (v string)
|
||||
}
|
||||
|
||||
func errorf(s string, args ...interface{}) {
|
||||
panic(fmt.Errorf("pq: %s", fmt.Sprintf(s, args...)))
|
||||
}
|
||||
|
||||
// TODO(ainar-g) Rename to errorf after removing panics.
|
||||
func fmterrorf(s string, args ...interface{}) error {
|
||||
return fmt.Errorf("pq: %s", fmt.Sprintf(s, args...))
|
||||
}
|
||||
|
||||
func errRecoverNoErrBadConn(err *error) {
|
||||
e := recover()
|
||||
if e == nil {
|
||||
// Do nothing
|
||||
return
|
||||
}
|
||||
var ok bool
|
||||
*err, ok = e.(error)
|
||||
if !ok {
|
||||
*err = fmt.Errorf("pq: unexpected error: %#v", e)
|
||||
}
|
||||
}
|
||||
|
||||
func (c *conn) errRecover(err *error) {
|
||||
e := recover()
|
||||
switch v := e.(type) {
|
||||
case nil:
|
||||
// Do nothing
|
||||
case runtime.Error:
|
||||
c.bad = true
|
||||
panic(v)
|
||||
case *Error:
|
||||
if v.Fatal() {
|
||||
*err = driver.ErrBadConn
|
||||
} else {
|
||||
*err = v
|
||||
}
|
||||
case *net.OpError:
|
||||
c.bad = true
|
||||
*err = v
|
||||
case error:
|
||||
if v == io.EOF || v.(error).Error() == "remote error: handshake failure" {
|
||||
*err = driver.ErrBadConn
|
||||
} else {
|
||||
*err = v
|
||||
}
|
||||
|
||||
default:
|
||||
c.bad = true
|
||||
panic(fmt.Sprintf("unknown error: %#v", e))
|
||||
}
|
||||
|
||||
// Any time we return ErrBadConn, we need to remember it since *Tx doesn't
|
||||
// mark the connection bad in database/sql.
|
||||
if *err == driver.ErrBadConn {
|
||||
c.bad = true
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,98 @@
|
|||
/*
|
||||
|
||||
Package listen is a self-contained Go program which uses the LISTEN / NOTIFY
|
||||
mechanism to avoid polling the database while waiting for more work to arrive.
|
||||
|
||||
//
|
||||
// You can see the program in action by defining a function similar to
|
||||
// the following:
|
||||
//
|
||||
// CREATE OR REPLACE FUNCTION public.get_work()
|
||||
// RETURNS bigint
|
||||
// LANGUAGE sql
|
||||
// AS $$
|
||||
// SELECT CASE WHEN random() >= 0.2 THEN int8 '1' END
|
||||
// $$
|
||||
// ;
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
"github.com/lib/pq"
|
||||
)
|
||||
|
||||
func doWork(db *sql.DB, work int64) {
|
||||
// work here
|
||||
}
|
||||
|
||||
func getWork(db *sql.DB) {
|
||||
for {
|
||||
// get work from the database here
|
||||
var work sql.NullInt64
|
||||
err := db.QueryRow("SELECT get_work()").Scan(&work)
|
||||
if err != nil {
|
||||
fmt.Println("call to get_work() failed: ", err)
|
||||
time.Sleep(10 * time.Second)
|
||||
continue
|
||||
}
|
||||
if !work.Valid {
|
||||
// no more work to do
|
||||
fmt.Println("ran out of work")
|
||||
return
|
||||
}
|
||||
|
||||
fmt.Println("starting work on ", work.Int64)
|
||||
go doWork(db, work.Int64)
|
||||
}
|
||||
}
|
||||
|
||||
func waitForNotification(l *pq.Listener) {
|
||||
select {
|
||||
case <-l.Notify:
|
||||
fmt.Println("received notification, new work available")
|
||||
case <-time.After(90 * time.Second):
|
||||
go l.Ping()
|
||||
// Check if there's more work available, just in case it takes
|
||||
// a while for the Listener to notice connection loss and
|
||||
// reconnect.
|
||||
fmt.Println("received no work for 90 seconds, checking for new work")
|
||||
}
|
||||
}
|
||||
|
||||
func main() {
|
||||
var conninfo string = ""
|
||||
|
||||
db, err := sql.Open("postgres", conninfo)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
reportProblem := func(ev pq.ListenerEventType, err error) {
|
||||
if err != nil {
|
||||
fmt.Println(err.Error())
|
||||
}
|
||||
}
|
||||
|
||||
minReconn := 10 * time.Second
|
||||
maxReconn := time.Minute
|
||||
listener := pq.NewListener(conninfo, minReconn, maxReconn, reportProblem)
|
||||
err = listener.Listen("getwork")
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
fmt.Println("entering main loop")
|
||||
for {
|
||||
// process all available work before waiting for notifications
|
||||
getWork(db)
|
||||
waitForNotification(listener)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
*/
|
||||
package listen
|
||||
|
|
@ -0,0 +1,118 @@
|
|||
package hstore
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"database/sql/driver"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Hstore is a wrapper for transferring Hstore values back and forth easily.
|
||||
type Hstore struct {
|
||||
Map map[string]sql.NullString
|
||||
}
|
||||
|
||||
// escapes and quotes hstore keys/values
|
||||
// s should be a sql.NullString or string
|
||||
func hQuote(s interface{}) string {
|
||||
var str string
|
||||
switch v := s.(type) {
|
||||
case sql.NullString:
|
||||
if !v.Valid {
|
||||
return "NULL"
|
||||
}
|
||||
str = v.String
|
||||
case string:
|
||||
str = v
|
||||
default:
|
||||
panic("not a string or sql.NullString")
|
||||
}
|
||||
|
||||
str = strings.Replace(str, "\\", "\\\\", -1)
|
||||
return `"` + strings.Replace(str, "\"", "\\\"", -1) + `"`
|
||||
}
|
||||
|
||||
// Scan implements the Scanner interface.
|
||||
//
|
||||
// Note h.Map is reallocated before the scan to clear existing values. If the
|
||||
// hstore column's database value is NULL, then h.Map is set to nil instead.
|
||||
func (h *Hstore) Scan(value interface{}) error {
|
||||
if value == nil {
|
||||
h.Map = nil
|
||||
return nil
|
||||
}
|
||||
h.Map = make(map[string]sql.NullString)
|
||||
var b byte
|
||||
pair := [][]byte{{}, {}}
|
||||
pi := 0
|
||||
inQuote := false
|
||||
didQuote := false
|
||||
sawSlash := false
|
||||
bindex := 0
|
||||
for bindex, b = range value.([]byte) {
|
||||
if sawSlash {
|
||||
pair[pi] = append(pair[pi], b)
|
||||
sawSlash = false
|
||||
continue
|
||||
}
|
||||
|
||||
switch b {
|
||||
case '\\':
|
||||
sawSlash = true
|
||||
continue
|
||||
case '"':
|
||||
inQuote = !inQuote
|
||||
if !didQuote {
|
||||
didQuote = true
|
||||
}
|
||||
continue
|
||||
default:
|
||||
if !inQuote {
|
||||
switch b {
|
||||
case ' ', '\t', '\n', '\r':
|
||||
continue
|
||||
case '=':
|
||||
continue
|
||||
case '>':
|
||||
pi = 1
|
||||
didQuote = false
|
||||
continue
|
||||
case ',':
|
||||
s := string(pair[1])
|
||||
if !didQuote && len(s) == 4 && strings.ToLower(s) == "null" {
|
||||
h.Map[string(pair[0])] = sql.NullString{String: "", Valid: false}
|
||||
} else {
|
||||
h.Map[string(pair[0])] = sql.NullString{String: string(pair[1]), Valid: true}
|
||||
}
|
||||
pair[0] = []byte{}
|
||||
pair[1] = []byte{}
|
||||
pi = 0
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
pair[pi] = append(pair[pi], b)
|
||||
}
|
||||
if bindex > 0 {
|
||||
s := string(pair[1])
|
||||
if !didQuote && len(s) == 4 && strings.ToLower(s) == "null" {
|
||||
h.Map[string(pair[0])] = sql.NullString{String: "", Valid: false}
|
||||
} else {
|
||||
h.Map[string(pair[0])] = sql.NullString{String: string(pair[1]), Valid: true}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Value implements the driver Valuer interface. Note if h.Map is nil, the
|
||||
// database column value will be set to NULL.
|
||||
func (h Hstore) Value() (driver.Value, error) {
|
||||
if h.Map == nil {
|
||||
return nil, nil
|
||||
}
|
||||
parts := []string{}
|
||||
for key, val := range h.Map {
|
||||
thispart := hQuote(key) + "=>" + hQuote(val)
|
||||
parts = append(parts, thispart)
|
||||
}
|
||||
return []byte(strings.Join(parts, ",")), nil
|
||||
}
|
||||
|
|
@ -0,0 +1,797 @@
|
|||
package pq
|
||||
|
||||
// Package pq is a pure Go Postgres driver for the database/sql package.
|
||||
// This module contains support for Postgres LISTEN/NOTIFY.
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
"time"
|
||||
)
|
||||
|
||||
// Notification represents a single notification from the database.
|
||||
type Notification struct {
|
||||
// Process ID (PID) of the notifying postgres backend.
|
||||
BePid int
|
||||
// Name of the channel the notification was sent on.
|
||||
Channel string
|
||||
// Payload, or the empty string if unspecified.
|
||||
Extra string
|
||||
}
|
||||
|
||||
func recvNotification(r *readBuf) *Notification {
|
||||
bePid := r.int32()
|
||||
channel := r.string()
|
||||
extra := r.string()
|
||||
|
||||
return &Notification{bePid, channel, extra}
|
||||
}
|
||||
|
||||
const (
|
||||
connStateIdle int32 = iota
|
||||
connStateExpectResponse
|
||||
connStateExpectReadyForQuery
|
||||
)
|
||||
|
||||
type message struct {
|
||||
typ byte
|
||||
err error
|
||||
}
|
||||
|
||||
var errListenerConnClosed = errors.New("pq: ListenerConn has been closed")
|
||||
|
||||
// ListenerConn is a low-level interface for waiting for notifications. You
|
||||
// should use Listener instead.
|
||||
type ListenerConn struct {
|
||||
// guards cn and err
|
||||
connectionLock sync.Mutex
|
||||
cn *conn
|
||||
err error
|
||||
|
||||
connState int32
|
||||
|
||||
// the sending goroutine will be holding this lock
|
||||
senderLock sync.Mutex
|
||||
|
||||
notificationChan chan<- *Notification
|
||||
|
||||
replyChan chan message
|
||||
}
|
||||
|
||||
// NewListenerConn creates a new ListenerConn. Use NewListener instead.
|
||||
func NewListenerConn(name string, notificationChan chan<- *Notification) (*ListenerConn, error) {
|
||||
return newDialListenerConn(defaultDialer{}, name, notificationChan)
|
||||
}
|
||||
|
||||
func newDialListenerConn(d Dialer, name string, c chan<- *Notification) (*ListenerConn, error) {
|
||||
cn, err := DialOpen(d, name)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
l := &ListenerConn{
|
||||
cn: cn.(*conn),
|
||||
notificationChan: c,
|
||||
connState: connStateIdle,
|
||||
replyChan: make(chan message, 2),
|
||||
}
|
||||
|
||||
go l.listenerConnMain()
|
||||
|
||||
return l, nil
|
||||
}
|
||||
|
||||
// We can only allow one goroutine at a time to be running a query on the
|
||||
// connection for various reasons, so the goroutine sending on the connection
|
||||
// must be holding senderLock.
|
||||
//
|
||||
// Returns an error if an unrecoverable error has occurred and the ListenerConn
|
||||
// should be abandoned.
|
||||
func (l *ListenerConn) acquireSenderLock() error {
|
||||
// we must acquire senderLock first to avoid deadlocks; see ExecSimpleQuery
|
||||
l.senderLock.Lock()
|
||||
|
||||
l.connectionLock.Lock()
|
||||
err := l.err
|
||||
l.connectionLock.Unlock()
|
||||
if err != nil {
|
||||
l.senderLock.Unlock()
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (l *ListenerConn) releaseSenderLock() {
|
||||
l.senderLock.Unlock()
|
||||
}
|
||||
|
||||
// setState advances the protocol state to newState. Returns false if moving
|
||||
// to that state from the current state is not allowed.
|
||||
func (l *ListenerConn) setState(newState int32) bool {
|
||||
var expectedState int32
|
||||
|
||||
switch newState {
|
||||
case connStateIdle:
|
||||
expectedState = connStateExpectReadyForQuery
|
||||
case connStateExpectResponse:
|
||||
expectedState = connStateIdle
|
||||
case connStateExpectReadyForQuery:
|
||||
expectedState = connStateExpectResponse
|
||||
default:
|
||||
panic(fmt.Sprintf("unexpected listenerConnState %d", newState))
|
||||
}
|
||||
|
||||
return atomic.CompareAndSwapInt32(&l.connState, expectedState, newState)
|
||||
}
|
||||
|
||||
// Main logic is here: receive messages from the postgres backend, forward
|
||||
// notifications and query replies and keep the internal state in sync with the
|
||||
// protocol state. Returns when the connection has been lost, is about to go
|
||||
// away or should be discarded because we couldn't agree on the state with the
|
||||
// server backend.
|
||||
func (l *ListenerConn) listenerConnLoop() (err error) {
|
||||
defer errRecoverNoErrBadConn(&err)
|
||||
|
||||
r := &readBuf{}
|
||||
for {
|
||||
t, err := l.cn.recvMessage(r)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
switch t {
|
||||
case 'A':
|
||||
// recvNotification copies all the data so we don't need to worry
|
||||
// about the scratch buffer being overwritten.
|
||||
l.notificationChan <- recvNotification(r)
|
||||
|
||||
case 'T', 'D':
|
||||
// only used by tests; ignore
|
||||
|
||||
case 'E':
|
||||
// We might receive an ErrorResponse even when not in a query; it
|
||||
// is expected that the server will close the connection after
|
||||
// that, but we should make sure that the error we display is the
|
||||
// one from the stray ErrorResponse, not io.ErrUnexpectedEOF.
|
||||
if !l.setState(connStateExpectReadyForQuery) {
|
||||
return parseError(r)
|
||||
}
|
||||
l.replyChan <- message{t, parseError(r)}
|
||||
|
||||
case 'C', 'I':
|
||||
if !l.setState(connStateExpectReadyForQuery) {
|
||||
// protocol out of sync
|
||||
return fmt.Errorf("unexpected CommandComplete")
|
||||
}
|
||||
// ExecSimpleQuery doesn't need to know about this message
|
||||
|
||||
case 'Z':
|
||||
if !l.setState(connStateIdle) {
|
||||
// protocol out of sync
|
||||
return fmt.Errorf("unexpected ReadyForQuery")
|
||||
}
|
||||
l.replyChan <- message{t, nil}
|
||||
|
||||
case 'N', 'S':
|
||||
// ignore
|
||||
default:
|
||||
return fmt.Errorf("unexpected message %q from server in listenerConnLoop", t)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// This is the main routine for the goroutine receiving on the database
|
||||
// connection. Most of the main logic is in listenerConnLoop.
|
||||
func (l *ListenerConn) listenerConnMain() {
|
||||
err := l.listenerConnLoop()
|
||||
|
||||
// listenerConnLoop terminated; we're done, but we still have to clean up.
|
||||
// Make sure nobody tries to start any new queries by making sure the err
|
||||
// pointer is set. It is important that we do not overwrite its value; a
|
||||
// connection could be closed by either this goroutine or one sending on
|
||||
// the connection -- whoever closes the connection is assumed to have the
|
||||
// more meaningful error message (as the other one will probably get
|
||||
// net.errClosed), so that goroutine sets the error we expose while the
|
||||
// other error is discarded. If the connection is lost while two
|
||||
// goroutines are operating on the socket, it probably doesn't matter which
|
||||
// error we expose so we don't try to do anything more complex.
|
||||
l.connectionLock.Lock()
|
||||
if l.err == nil {
|
||||
l.err = err
|
||||
}
|
||||
l.cn.Close()
|
||||
l.connectionLock.Unlock()
|
||||
|
||||
// There might be a query in-flight; make sure nobody's waiting for a
|
||||
// response to it, since there's not going to be one.
|
||||
close(l.replyChan)
|
||||
|
||||
// let the listener know we're done
|
||||
close(l.notificationChan)
|
||||
|
||||
// this ListenerConn is done
|
||||
}
|
||||
|
||||
// Listen sends a LISTEN query to the server. See ExecSimpleQuery.
|
||||
func (l *ListenerConn) Listen(channel string) (bool, error) {
|
||||
return l.ExecSimpleQuery("LISTEN " + QuoteIdentifier(channel))
|
||||
}
|
||||
|
||||
// Unlisten sends an UNLISTEN query to the server. See ExecSimpleQuery.
|
||||
func (l *ListenerConn) Unlisten(channel string) (bool, error) {
|
||||
return l.ExecSimpleQuery("UNLISTEN " + QuoteIdentifier(channel))
|
||||
}
|
||||
|
||||
// UnlistenAll sends an `UNLISTEN *` query to the server. See ExecSimpleQuery.
|
||||
func (l *ListenerConn) UnlistenAll() (bool, error) {
|
||||
return l.ExecSimpleQuery("UNLISTEN *")
|
||||
}
|
||||
|
||||
// Ping the remote server to make sure it's alive. Non-nil error means the
|
||||
// connection has failed and should be abandoned.
|
||||
func (l *ListenerConn) Ping() error {
|
||||
sent, err := l.ExecSimpleQuery("")
|
||||
if !sent {
|
||||
return err
|
||||
}
|
||||
if err != nil {
|
||||
// shouldn't happen
|
||||
panic(err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Attempt to send a query on the connection. Returns an error if sending the
|
||||
// query failed, and the caller should initiate closure of this connection.
|
||||
// The caller must be holding senderLock (see acquireSenderLock and
|
||||
// releaseSenderLock).
|
||||
func (l *ListenerConn) sendSimpleQuery(q string) (err error) {
|
||||
defer errRecoverNoErrBadConn(&err)
|
||||
|
||||
// must set connection state before sending the query
|
||||
if !l.setState(connStateExpectResponse) {
|
||||
panic("two queries running at the same time")
|
||||
}
|
||||
|
||||
// Can't use l.cn.writeBuf here because it uses the scratch buffer which
|
||||
// might get overwritten by listenerConnLoop.
|
||||
b := &writeBuf{
|
||||
buf: []byte("Q\x00\x00\x00\x00"),
|
||||
pos: 1,
|
||||
}
|
||||
b.string(q)
|
||||
l.cn.send(b)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// ExecSimpleQuery executes a "simple query" (i.e. one with no bindable
|
||||
// parameters) on the connection. The possible return values are:
|
||||
// 1) "executed" is true; the query was executed to completion on the
|
||||
// database server. If the query failed, err will be set to the error
|
||||
// returned by the database, otherwise err will be nil.
|
||||
// 2) If "executed" is false, the query could not be executed on the remote
|
||||
// server. err will be non-nil.
|
||||
//
|
||||
// After a call to ExecSimpleQuery has returned an executed=false value, the
|
||||
// connection has either been closed or will be closed shortly thereafter, and
|
||||
// all subsequently executed queries will return an error.
|
||||
func (l *ListenerConn) ExecSimpleQuery(q string) (executed bool, err error) {
|
||||
if err = l.acquireSenderLock(); err != nil {
|
||||
return false, err
|
||||
}
|
||||
defer l.releaseSenderLock()
|
||||
|
||||
err = l.sendSimpleQuery(q)
|
||||
if err != nil {
|
||||
// We can't know what state the protocol is in, so we need to abandon
|
||||
// this connection.
|
||||
l.connectionLock.Lock()
|
||||
// Set the error pointer if it hasn't been set already; see
|
||||
// listenerConnMain.
|
||||
if l.err == nil {
|
||||
l.err = err
|
||||
}
|
||||
l.connectionLock.Unlock()
|
||||
l.cn.c.Close()
|
||||
return false, err
|
||||
}
|
||||
|
||||
// now we just wait for a reply..
|
||||
for {
|
||||
m, ok := <-l.replyChan
|
||||
if !ok {
|
||||
// We lost the connection to server, don't bother waiting for a
|
||||
// a response. err should have been set already.
|
||||
l.connectionLock.Lock()
|
||||
err := l.err
|
||||
l.connectionLock.Unlock()
|
||||
return false, err
|
||||
}
|
||||
switch m.typ {
|
||||
case 'Z':
|
||||
// sanity check
|
||||
if m.err != nil {
|
||||
panic("m.err != nil")
|
||||
}
|
||||
// done; err might or might not be set
|
||||
return true, err
|
||||
|
||||
case 'E':
|
||||
// sanity check
|
||||
if m.err == nil {
|
||||
panic("m.err == nil")
|
||||
}
|
||||
// server responded with an error; ReadyForQuery to follow
|
||||
err = m.err
|
||||
|
||||
default:
|
||||
return false, fmt.Errorf("unknown response for simple query: %q", m.typ)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Close closes the connection.
|
||||
func (l *ListenerConn) Close() error {
|
||||
l.connectionLock.Lock()
|
||||
if l.err != nil {
|
||||
l.connectionLock.Unlock()
|
||||
return errListenerConnClosed
|
||||
}
|
||||
l.err = errListenerConnClosed
|
||||
l.connectionLock.Unlock()
|
||||
// We can't send anything on the connection without holding senderLock.
|
||||
// Simply close the net.Conn to wake up everyone operating on it.
|
||||
return l.cn.c.Close()
|
||||
}
|
||||
|
||||
// Err returns the reason the connection was closed. It is not safe to call
|
||||
// this function until l.Notify has been closed.
|
||||
func (l *ListenerConn) Err() error {
|
||||
return l.err
|
||||
}
|
||||
|
||||
var errListenerClosed = errors.New("pq: Listener has been closed")
|
||||
|
||||
// ErrChannelAlreadyOpen is returned from Listen when a channel is already
|
||||
// open.
|
||||
var ErrChannelAlreadyOpen = errors.New("pq: channel is already open")
|
||||
|
||||
// ErrChannelNotOpen is returned from Unlisten when a channel is not open.
|
||||
var ErrChannelNotOpen = errors.New("pq: channel is not open")
|
||||
|
||||
// ListenerEventType is an enumeration of listener event types.
|
||||
type ListenerEventType int
|
||||
|
||||
const (
|
||||
// ListenerEventConnected is emitted only when the database connection
|
||||
// has been initially initialized. The err argument of the callback
|
||||
// will always be nil.
|
||||
ListenerEventConnected ListenerEventType = iota
|
||||
|
||||
// ListenerEventDisconnected is emitted after a database connection has
|
||||
// been lost, either because of an error or because Close has been
|
||||
// called. The err argument will be set to the reason the database
|
||||
// connection was lost.
|
||||
ListenerEventDisconnected
|
||||
|
||||
// ListenerEventReconnected is emitted after a database connection has
|
||||
// been re-established after connection loss. The err argument of the
|
||||
// callback will always be nil. After this event has been emitted, a
|
||||
// nil pq.Notification is sent on the Listener.Notify channel.
|
||||
ListenerEventReconnected
|
||||
|
||||
// ListenerEventConnectionAttemptFailed is emitted after a connection
|
||||
// to the database was attempted, but failed. The err argument will be
|
||||
// set to an error describing why the connection attempt did not
|
||||
// succeed.
|
||||
ListenerEventConnectionAttemptFailed
|
||||
)
|
||||
|
||||
// EventCallbackType is the event callback type. See also ListenerEventType
|
||||
// constants' documentation.
|
||||
type EventCallbackType func(event ListenerEventType, err error)
|
||||
|
||||
// Listener provides an interface for listening to notifications from a
|
||||
// PostgreSQL database. For general usage information, see section
|
||||
// "Notifications".
|
||||
//
|
||||
// Listener can safely be used from concurrently running goroutines.
|
||||
type Listener struct {
|
||||
// Channel for receiving notifications from the database. In some cases a
|
||||
// nil value will be sent. See section "Notifications" above.
|
||||
Notify chan *Notification
|
||||
|
||||
name string
|
||||
minReconnectInterval time.Duration
|
||||
maxReconnectInterval time.Duration
|
||||
dialer Dialer
|
||||
eventCallback EventCallbackType
|
||||
|
||||
lock sync.Mutex
|
||||
isClosed bool
|
||||
reconnectCond *sync.Cond
|
||||
cn *ListenerConn
|
||||
connNotificationChan <-chan *Notification
|
||||
channels map[string]struct{}
|
||||
}
|
||||
|
||||
// NewListener creates a new database connection dedicated to LISTEN / NOTIFY.
|
||||
//
|
||||
// name should be set to a connection string to be used to establish the
|
||||
// database connection (see section "Connection String Parameters" above).
|
||||
//
|
||||
// minReconnectInterval controls the duration to wait before trying to
|
||||
// re-establish the database connection after connection loss. After each
|
||||
// consecutive failure this interval is doubled, until maxReconnectInterval is
|
||||
// reached. Successfully completing the connection establishment procedure
|
||||
// resets the interval back to minReconnectInterval.
|
||||
//
|
||||
// The last parameter eventCallback can be set to a function which will be
|
||||
// called by the Listener when the state of the underlying database connection
|
||||
// changes. This callback will be called by the goroutine which dispatches the
|
||||
// notifications over the Notify channel, so you should try to avoid doing
|
||||
// potentially time-consuming operations from the callback.
|
||||
func NewListener(name string,
|
||||
minReconnectInterval time.Duration,
|
||||
maxReconnectInterval time.Duration,
|
||||
eventCallback EventCallbackType) *Listener {
|
||||
return NewDialListener(defaultDialer{}, name, minReconnectInterval, maxReconnectInterval, eventCallback)
|
||||
}
|
||||
|
||||
// NewDialListener is like NewListener but it takes a Dialer.
|
||||
func NewDialListener(d Dialer,
|
||||
name string,
|
||||
minReconnectInterval time.Duration,
|
||||
maxReconnectInterval time.Duration,
|
||||
eventCallback EventCallbackType) *Listener {
|
||||
|
||||
l := &Listener{
|
||||
name: name,
|
||||
minReconnectInterval: minReconnectInterval,
|
||||
maxReconnectInterval: maxReconnectInterval,
|
||||
dialer: d,
|
||||
eventCallback: eventCallback,
|
||||
|
||||
channels: make(map[string]struct{}),
|
||||
|
||||
Notify: make(chan *Notification, 32),
|
||||
}
|
||||
l.reconnectCond = sync.NewCond(&l.lock)
|
||||
|
||||
go l.listenerMain()
|
||||
|
||||
return l
|
||||
}
|
||||
|
||||
// NotificationChannel returns the notification channel for this listener.
|
||||
// This is the same channel as Notify, and will not be recreated during the
|
||||
// life time of the Listener.
|
||||
func (l *Listener) NotificationChannel() <-chan *Notification {
|
||||
return l.Notify
|
||||
}
|
||||
|
||||
// Listen starts listening for notifications on a channel. Calls to this
|
||||
// function will block until an acknowledgement has been received from the
|
||||
// server. Note that Listener automatically re-establishes the connection
|
||||
// after connection loss, so this function may block indefinitely if the
|
||||
// connection can not be re-established.
|
||||
//
|
||||
// Listen will only fail in three conditions:
|
||||
// 1) The channel is already open. The returned error will be
|
||||
// ErrChannelAlreadyOpen.
|
||||
// 2) The query was executed on the remote server, but PostgreSQL returned an
|
||||
// error message in response to the query. The returned error will be a
|
||||
// pq.Error containing the information the server supplied.
|
||||
// 3) Close is called on the Listener before the request could be completed.
|
||||
//
|
||||
// The channel name is case-sensitive.
|
||||
func (l *Listener) Listen(channel string) error {
|
||||
l.lock.Lock()
|
||||
defer l.lock.Unlock()
|
||||
|
||||
if l.isClosed {
|
||||
return errListenerClosed
|
||||
}
|
||||
|
||||
// The server allows you to issue a LISTEN on a channel which is already
|
||||
// open, but it seems useful to be able to detect this case to spot for
|
||||
// mistakes in application logic. If the application genuinely does't
|
||||
// care, it can check the exported error and ignore it.
|
||||
_, exists := l.channels[channel]
|
||||
if exists {
|
||||
return ErrChannelAlreadyOpen
|
||||
}
|
||||
|
||||
if l.cn != nil {
|
||||
// If gotResponse is true but error is set, the query was executed on
|
||||
// the remote server, but resulted in an error. This should be
|
||||
// relatively rare, so it's fine if we just pass the error to our
|
||||
// caller. However, if gotResponse is false, we could not complete the
|
||||
// query on the remote server and our underlying connection is about
|
||||
// to go away, so we only add relname to l.channels, and wait for
|
||||
// resync() to take care of the rest.
|
||||
gotResponse, err := l.cn.Listen(channel)
|
||||
if gotResponse && err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
l.channels[channel] = struct{}{}
|
||||
for l.cn == nil {
|
||||
l.reconnectCond.Wait()
|
||||
// we let go of the mutex for a while
|
||||
if l.isClosed {
|
||||
return errListenerClosed
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Unlisten removes a channel from the Listener's channel list. Returns
|
||||
// ErrChannelNotOpen if the Listener is not listening on the specified channel.
|
||||
// Returns immediately with no error if there is no connection. Note that you
|
||||
// might still get notifications for this channel even after Unlisten has
|
||||
// returned.
|
||||
//
|
||||
// The channel name is case-sensitive.
|
||||
func (l *Listener) Unlisten(channel string) error {
|
||||
l.lock.Lock()
|
||||
defer l.lock.Unlock()
|
||||
|
||||
if l.isClosed {
|
||||
return errListenerClosed
|
||||
}
|
||||
|
||||
// Similarly to LISTEN, this is not an error in Postgres, but it seems
|
||||
// useful to distinguish from the normal conditions.
|
||||
_, exists := l.channels[channel]
|
||||
if !exists {
|
||||
return ErrChannelNotOpen
|
||||
}
|
||||
|
||||
if l.cn != nil {
|
||||
// Similarly to Listen (see comment in that function), the caller
|
||||
// should only be bothered with an error if it came from the backend as
|
||||
// a response to our query.
|
||||
gotResponse, err := l.cn.Unlisten(channel)
|
||||
if gotResponse && err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Don't bother waiting for resync if there's no connection.
|
||||
delete(l.channels, channel)
|
||||
return nil
|
||||
}
|
||||
|
||||
// UnlistenAll removes all channels from the Listener's channel list. Returns
|
||||
// immediately with no error if there is no connection. Note that you might
|
||||
// still get notifications for any of the deleted channels even after
|
||||
// UnlistenAll has returned.
|
||||
func (l *Listener) UnlistenAll() error {
|
||||
l.lock.Lock()
|
||||
defer l.lock.Unlock()
|
||||
|
||||
if l.isClosed {
|
||||
return errListenerClosed
|
||||
}
|
||||
|
||||
if l.cn != nil {
|
||||
// Similarly to Listen (see comment in that function), the caller
|
||||
// should only be bothered with an error if it came from the backend as
|
||||
// a response to our query.
|
||||
gotResponse, err := l.cn.UnlistenAll()
|
||||
if gotResponse && err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Don't bother waiting for resync if there's no connection.
|
||||
l.channels = make(map[string]struct{})
|
||||
return nil
|
||||
}
|
||||
|
||||
// Ping the remote server to make sure it's alive. Non-nil return value means
|
||||
// that there is no active connection.
|
||||
func (l *Listener) Ping() error {
|
||||
l.lock.Lock()
|
||||
defer l.lock.Unlock()
|
||||
|
||||
if l.isClosed {
|
||||
return errListenerClosed
|
||||
}
|
||||
if l.cn == nil {
|
||||
return errors.New("no connection")
|
||||
}
|
||||
|
||||
return l.cn.Ping()
|
||||
}
|
||||
|
||||
// Clean up after losing the server connection. Returns l.cn.Err(), which
|
||||
// should have the reason the connection was lost.
|
||||
func (l *Listener) disconnectCleanup() error {
|
||||
l.lock.Lock()
|
||||
defer l.lock.Unlock()
|
||||
|
||||
// sanity check; can't look at Err() until the channel has been closed
|
||||
select {
|
||||
case _, ok := <-l.connNotificationChan:
|
||||
if ok {
|
||||
panic("connNotificationChan not closed")
|
||||
}
|
||||
default:
|
||||
panic("connNotificationChan not closed")
|
||||
}
|
||||
|
||||
err := l.cn.Err()
|
||||
l.cn.Close()
|
||||
l.cn = nil
|
||||
return err
|
||||
}
|
||||
|
||||
// Synchronize the list of channels we want to be listening on with the server
|
||||
// after the connection has been established.
|
||||
func (l *Listener) resync(cn *ListenerConn, notificationChan <-chan *Notification) error {
|
||||
doneChan := make(chan error)
|
||||
go func(notificationChan <-chan *Notification) {
|
||||
for channel := range l.channels {
|
||||
// If we got a response, return that error to our caller as it's
|
||||
// going to be more descriptive than cn.Err().
|
||||
gotResponse, err := cn.Listen(channel)
|
||||
if gotResponse && err != nil {
|
||||
doneChan <- err
|
||||
return
|
||||
}
|
||||
|
||||
// If we couldn't reach the server, wait for notificationChan to
|
||||
// close and then return the error message from the connection, as
|
||||
// per ListenerConn's interface.
|
||||
if err != nil {
|
||||
for range notificationChan {
|
||||
}
|
||||
doneChan <- cn.Err()
|
||||
return
|
||||
}
|
||||
}
|
||||
doneChan <- nil
|
||||
}(notificationChan)
|
||||
|
||||
// Ignore notifications while synchronization is going on to avoid
|
||||
// deadlocks. We have to send a nil notification over Notify anyway as
|
||||
// we can't possibly know which notifications (if any) were lost while
|
||||
// the connection was down, so there's no reason to try and process
|
||||
// these messages at all.
|
||||
for {
|
||||
select {
|
||||
case _, ok := <-notificationChan:
|
||||
if !ok {
|
||||
notificationChan = nil
|
||||
}
|
||||
|
||||
case err := <-doneChan:
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// caller should NOT be holding l.lock
|
||||
func (l *Listener) closed() bool {
|
||||
l.lock.Lock()
|
||||
defer l.lock.Unlock()
|
||||
|
||||
return l.isClosed
|
||||
}
|
||||
|
||||
func (l *Listener) connect() error {
|
||||
notificationChan := make(chan *Notification, 32)
|
||||
cn, err := newDialListenerConn(l.dialer, l.name, notificationChan)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
l.lock.Lock()
|
||||
defer l.lock.Unlock()
|
||||
|
||||
err = l.resync(cn, notificationChan)
|
||||
if err != nil {
|
||||
cn.Close()
|
||||
return err
|
||||
}
|
||||
|
||||
l.cn = cn
|
||||
l.connNotificationChan = notificationChan
|
||||
l.reconnectCond.Broadcast()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Close disconnects the Listener from the database and shuts it down.
|
||||
// Subsequent calls to its methods will return an error. Close returns an
|
||||
// error if the connection has already been closed.
|
||||
func (l *Listener) Close() error {
|
||||
l.lock.Lock()
|
||||
defer l.lock.Unlock()
|
||||
|
||||
if l.isClosed {
|
||||
return errListenerClosed
|
||||
}
|
||||
|
||||
if l.cn != nil {
|
||||
l.cn.Close()
|
||||
}
|
||||
l.isClosed = true
|
||||
|
||||
// Unblock calls to Listen()
|
||||
l.reconnectCond.Broadcast()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (l *Listener) emitEvent(event ListenerEventType, err error) {
|
||||
if l.eventCallback != nil {
|
||||
l.eventCallback(event, err)
|
||||
}
|
||||
}
|
||||
|
||||
// Main logic here: maintain a connection to the server when possible, wait
|
||||
// for notifications and emit events.
|
||||
func (l *Listener) listenerConnLoop() {
|
||||
var nextReconnect time.Time
|
||||
|
||||
reconnectInterval := l.minReconnectInterval
|
||||
for {
|
||||
for {
|
||||
err := l.connect()
|
||||
if err == nil {
|
||||
break
|
||||
}
|
||||
|
||||
if l.closed() {
|
||||
return
|
||||
}
|
||||
l.emitEvent(ListenerEventConnectionAttemptFailed, err)
|
||||
|
||||
time.Sleep(reconnectInterval)
|
||||
reconnectInterval *= 2
|
||||
if reconnectInterval > l.maxReconnectInterval {
|
||||
reconnectInterval = l.maxReconnectInterval
|
||||
}
|
||||
}
|
||||
|
||||
if nextReconnect.IsZero() {
|
||||
l.emitEvent(ListenerEventConnected, nil)
|
||||
} else {
|
||||
l.emitEvent(ListenerEventReconnected, nil)
|
||||
l.Notify <- nil
|
||||
}
|
||||
|
||||
reconnectInterval = l.minReconnectInterval
|
||||
nextReconnect = time.Now().Add(reconnectInterval)
|
||||
|
||||
for {
|
||||
notification, ok := <-l.connNotificationChan
|
||||
if !ok {
|
||||
// lost connection, loop again
|
||||
break
|
||||
}
|
||||
l.Notify <- notification
|
||||
}
|
||||
|
||||
err := l.disconnectCleanup()
|
||||
if l.closed() {
|
||||
return
|
||||
}
|
||||
l.emitEvent(ListenerEventDisconnected, err)
|
||||
|
||||
time.Sleep(time.Until(nextReconnect))
|
||||
}
|
||||
}
|
||||
|
||||
func (l *Listener) listenerMain() {
|
||||
l.listenerConnLoop()
|
||||
close(l.Notify)
|
||||
}
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
// Package oid contains OID constants
|
||||
// as defined by the Postgres server.
|
||||
package oid
|
||||
|
||||
// Oid is a Postgres Object ID.
|
||||
type Oid uint32
|
||||
|
|
@ -0,0 +1,93 @@
|
|||
// +build ignore
|
||||
|
||||
// Generate the table of OID values
|
||||
// Run with 'go run gen.go'.
|
||||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"log"
|
||||
"os"
|
||||
"os/exec"
|
||||
"strings"
|
||||
|
||||
_ "github.com/lib/pq"
|
||||
)
|
||||
|
||||
// OID represent a postgres Object Identifier Type.
|
||||
type OID struct {
|
||||
ID int
|
||||
Type string
|
||||
}
|
||||
|
||||
// Name returns an upper case version of the oid type.
|
||||
func (o OID) Name() string {
|
||||
return strings.ToUpper(o.Type)
|
||||
}
|
||||
|
||||
func main() {
|
||||
datname := os.Getenv("PGDATABASE")
|
||||
sslmode := os.Getenv("PGSSLMODE")
|
||||
|
||||
if datname == "" {
|
||||
os.Setenv("PGDATABASE", "pqgotest")
|
||||
}
|
||||
|
||||
if sslmode == "" {
|
||||
os.Setenv("PGSSLMODE", "disable")
|
||||
}
|
||||
|
||||
db, err := sql.Open("postgres", "")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
rows, err := db.Query(`
|
||||
SELECT typname, oid
|
||||
FROM pg_type WHERE oid < 10000
|
||||
ORDER BY oid;
|
||||
`)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
oids := make([]*OID, 0)
|
||||
for rows.Next() {
|
||||
var oid OID
|
||||
if err = rows.Scan(&oid.Type, &oid.ID); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
oids = append(oids, &oid)
|
||||
}
|
||||
if err = rows.Err(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
cmd := exec.Command("gofmt")
|
||||
cmd.Stderr = os.Stderr
|
||||
w, err := cmd.StdinPipe()
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
f, err := os.Create("types.go")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
cmd.Stdout = f
|
||||
err = cmd.Start()
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
fmt.Fprintln(w, "// Code generated by gen.go. DO NOT EDIT.")
|
||||
fmt.Fprintln(w, "\npackage oid")
|
||||
fmt.Fprintln(w, "const (")
|
||||
for _, oid := range oids {
|
||||
fmt.Fprintf(w, "T_%s Oid = %d\n", oid.Type, oid.ID)
|
||||
}
|
||||
fmt.Fprintln(w, ")")
|
||||
fmt.Fprintln(w, "var TypeName = map[Oid]string{")
|
||||
for _, oid := range oids {
|
||||
fmt.Fprintf(w, "T_%s: \"%s\",\n", oid.Type, oid.Name())
|
||||
}
|
||||
fmt.Fprintln(w, "}")
|
||||
w.Close()
|
||||
cmd.Wait()
|
||||
}
|
||||
|
|
@ -0,0 +1,343 @@
|
|||
// Code generated by gen.go. DO NOT EDIT.
|
||||
|
||||
package oid
|
||||
|
||||
const (
|
||||
T_bool Oid = 16
|
||||
T_bytea Oid = 17
|
||||
T_char Oid = 18
|
||||
T_name Oid = 19
|
||||
T_int8 Oid = 20
|
||||
T_int2 Oid = 21
|
||||
T_int2vector Oid = 22
|
||||
T_int4 Oid = 23
|
||||
T_regproc Oid = 24
|
||||
T_text Oid = 25
|
||||
T_oid Oid = 26
|
||||
T_tid Oid = 27
|
||||
T_xid Oid = 28
|
||||
T_cid Oid = 29
|
||||
T_oidvector Oid = 30
|
||||
T_pg_ddl_command Oid = 32
|
||||
T_pg_type Oid = 71
|
||||
T_pg_attribute Oid = 75
|
||||
T_pg_proc Oid = 81
|
||||
T_pg_class Oid = 83
|
||||
T_json Oid = 114
|
||||
T_xml Oid = 142
|
||||
T__xml Oid = 143
|
||||
T_pg_node_tree Oid = 194
|
||||
T__json Oid = 199
|
||||
T_smgr Oid = 210
|
||||
T_index_am_handler Oid = 325
|
||||
T_point Oid = 600
|
||||
T_lseg Oid = 601
|
||||
T_path Oid = 602
|
||||
T_box Oid = 603
|
||||
T_polygon Oid = 604
|
||||
T_line Oid = 628
|
||||
T__line Oid = 629
|
||||
T_cidr Oid = 650
|
||||
T__cidr Oid = 651
|
||||
T_float4 Oid = 700
|
||||
T_float8 Oid = 701
|
||||
T_abstime Oid = 702
|
||||
T_reltime Oid = 703
|
||||
T_tinterval Oid = 704
|
||||
T_unknown Oid = 705
|
||||
T_circle Oid = 718
|
||||
T__circle Oid = 719
|
||||
T_money Oid = 790
|
||||
T__money Oid = 791
|
||||
T_macaddr Oid = 829
|
||||
T_inet Oid = 869
|
||||
T__bool Oid = 1000
|
||||
T__bytea Oid = 1001
|
||||
T__char Oid = 1002
|
||||
T__name Oid = 1003
|
||||
T__int2 Oid = 1005
|
||||
T__int2vector Oid = 1006
|
||||
T__int4 Oid = 1007
|
||||
T__regproc Oid = 1008
|
||||
T__text Oid = 1009
|
||||
T__tid Oid = 1010
|
||||
T__xid Oid = 1011
|
||||
T__cid Oid = 1012
|
||||
T__oidvector Oid = 1013
|
||||
T__bpchar Oid = 1014
|
||||
T__varchar Oid = 1015
|
||||
T__int8 Oid = 1016
|
||||
T__point Oid = 1017
|
||||
T__lseg Oid = 1018
|
||||
T__path Oid = 1019
|
||||
T__box Oid = 1020
|
||||
T__float4 Oid = 1021
|
||||
T__float8 Oid = 1022
|
||||
T__abstime Oid = 1023
|
||||
T__reltime Oid = 1024
|
||||
T__tinterval Oid = 1025
|
||||
T__polygon Oid = 1027
|
||||
T__oid Oid = 1028
|
||||
T_aclitem Oid = 1033
|
||||
T__aclitem Oid = 1034
|
||||
T__macaddr Oid = 1040
|
||||
T__inet Oid = 1041
|
||||
T_bpchar Oid = 1042
|
||||
T_varchar Oid = 1043
|
||||
T_date Oid = 1082
|
||||
T_time Oid = 1083
|
||||
T_timestamp Oid = 1114
|
||||
T__timestamp Oid = 1115
|
||||
T__date Oid = 1182
|
||||
T__time Oid = 1183
|
||||
T_timestamptz Oid = 1184
|
||||
T__timestamptz Oid = 1185
|
||||
T_interval Oid = 1186
|
||||
T__interval Oid = 1187
|
||||
T__numeric Oid = 1231
|
||||
T_pg_database Oid = 1248
|
||||
T__cstring Oid = 1263
|
||||
T_timetz Oid = 1266
|
||||
T__timetz Oid = 1270
|
||||
T_bit Oid = 1560
|
||||
T__bit Oid = 1561
|
||||
T_varbit Oid = 1562
|
||||
T__varbit Oid = 1563
|
||||
T_numeric Oid = 1700
|
||||
T_refcursor Oid = 1790
|
||||
T__refcursor Oid = 2201
|
||||
T_regprocedure Oid = 2202
|
||||
T_regoper Oid = 2203
|
||||
T_regoperator Oid = 2204
|
||||
T_regclass Oid = 2205
|
||||
T_regtype Oid = 2206
|
||||
T__regprocedure Oid = 2207
|
||||
T__regoper Oid = 2208
|
||||
T__regoperator Oid = 2209
|
||||
T__regclass Oid = 2210
|
||||
T__regtype Oid = 2211
|
||||
T_record Oid = 2249
|
||||
T_cstring Oid = 2275
|
||||
T_any Oid = 2276
|
||||
T_anyarray Oid = 2277
|
||||
T_void Oid = 2278
|
||||
T_trigger Oid = 2279
|
||||
T_language_handler Oid = 2280
|
||||
T_internal Oid = 2281
|
||||
T_opaque Oid = 2282
|
||||
T_anyelement Oid = 2283
|
||||
T__record Oid = 2287
|
||||
T_anynonarray Oid = 2776
|
||||
T_pg_authid Oid = 2842
|
||||
T_pg_auth_members Oid = 2843
|
||||
T__txid_snapshot Oid = 2949
|
||||
T_uuid Oid = 2950
|
||||
T__uuid Oid = 2951
|
||||
T_txid_snapshot Oid = 2970
|
||||
T_fdw_handler Oid = 3115
|
||||
T_pg_lsn Oid = 3220
|
||||
T__pg_lsn Oid = 3221
|
||||
T_tsm_handler Oid = 3310
|
||||
T_anyenum Oid = 3500
|
||||
T_tsvector Oid = 3614
|
||||
T_tsquery Oid = 3615
|
||||
T_gtsvector Oid = 3642
|
||||
T__tsvector Oid = 3643
|
||||
T__gtsvector Oid = 3644
|
||||
T__tsquery Oid = 3645
|
||||
T_regconfig Oid = 3734
|
||||
T__regconfig Oid = 3735
|
||||
T_regdictionary Oid = 3769
|
||||
T__regdictionary Oid = 3770
|
||||
T_jsonb Oid = 3802
|
||||
T__jsonb Oid = 3807
|
||||
T_anyrange Oid = 3831
|
||||
T_event_trigger Oid = 3838
|
||||
T_int4range Oid = 3904
|
||||
T__int4range Oid = 3905
|
||||
T_numrange Oid = 3906
|
||||
T__numrange Oid = 3907
|
||||
T_tsrange Oid = 3908
|
||||
T__tsrange Oid = 3909
|
||||
T_tstzrange Oid = 3910
|
||||
T__tstzrange Oid = 3911
|
||||
T_daterange Oid = 3912
|
||||
T__daterange Oid = 3913
|
||||
T_int8range Oid = 3926
|
||||
T__int8range Oid = 3927
|
||||
T_pg_shseclabel Oid = 4066
|
||||
T_regnamespace Oid = 4089
|
||||
T__regnamespace Oid = 4090
|
||||
T_regrole Oid = 4096
|
||||
T__regrole Oid = 4097
|
||||
)
|
||||
|
||||
var TypeName = map[Oid]string{
|
||||
T_bool: "BOOL",
|
||||
T_bytea: "BYTEA",
|
||||
T_char: "CHAR",
|
||||
T_name: "NAME",
|
||||
T_int8: "INT8",
|
||||
T_int2: "INT2",
|
||||
T_int2vector: "INT2VECTOR",
|
||||
T_int4: "INT4",
|
||||
T_regproc: "REGPROC",
|
||||
T_text: "TEXT",
|
||||
T_oid: "OID",
|
||||
T_tid: "TID",
|
||||
T_xid: "XID",
|
||||
T_cid: "CID",
|
||||
T_oidvector: "OIDVECTOR",
|
||||
T_pg_ddl_command: "PG_DDL_COMMAND",
|
||||
T_pg_type: "PG_TYPE",
|
||||
T_pg_attribute: "PG_ATTRIBUTE",
|
||||
T_pg_proc: "PG_PROC",
|
||||
T_pg_class: "PG_CLASS",
|
||||
T_json: "JSON",
|
||||
T_xml: "XML",
|
||||
T__xml: "_XML",
|
||||
T_pg_node_tree: "PG_NODE_TREE",
|
||||
T__json: "_JSON",
|
||||
T_smgr: "SMGR",
|
||||
T_index_am_handler: "INDEX_AM_HANDLER",
|
||||
T_point: "POINT",
|
||||
T_lseg: "LSEG",
|
||||
T_path: "PATH",
|
||||
T_box: "BOX",
|
||||
T_polygon: "POLYGON",
|
||||
T_line: "LINE",
|
||||
T__line: "_LINE",
|
||||
T_cidr: "CIDR",
|
||||
T__cidr: "_CIDR",
|
||||
T_float4: "FLOAT4",
|
||||
T_float8: "FLOAT8",
|
||||
T_abstime: "ABSTIME",
|
||||
T_reltime: "RELTIME",
|
||||
T_tinterval: "TINTERVAL",
|
||||
T_unknown: "UNKNOWN",
|
||||
T_circle: "CIRCLE",
|
||||
T__circle: "_CIRCLE",
|
||||
T_money: "MONEY",
|
||||
T__money: "_MONEY",
|
||||
T_macaddr: "MACADDR",
|
||||
T_inet: "INET",
|
||||
T__bool: "_BOOL",
|
||||
T__bytea: "_BYTEA",
|
||||
T__char: "_CHAR",
|
||||
T__name: "_NAME",
|
||||
T__int2: "_INT2",
|
||||
T__int2vector: "_INT2VECTOR",
|
||||
T__int4: "_INT4",
|
||||
T__regproc: "_REGPROC",
|
||||
T__text: "_TEXT",
|
||||
T__tid: "_TID",
|
||||
T__xid: "_XID",
|
||||
T__cid: "_CID",
|
||||
T__oidvector: "_OIDVECTOR",
|
||||
T__bpchar: "_BPCHAR",
|
||||
T__varchar: "_VARCHAR",
|
||||
T__int8: "_INT8",
|
||||
T__point: "_POINT",
|
||||
T__lseg: "_LSEG",
|
||||
T__path: "_PATH",
|
||||
T__box: "_BOX",
|
||||
T__float4: "_FLOAT4",
|
||||
T__float8: "_FLOAT8",
|
||||
T__abstime: "_ABSTIME",
|
||||
T__reltime: "_RELTIME",
|
||||
T__tinterval: "_TINTERVAL",
|
||||
T__polygon: "_POLYGON",
|
||||
T__oid: "_OID",
|
||||
T_aclitem: "ACLITEM",
|
||||
T__aclitem: "_ACLITEM",
|
||||
T__macaddr: "_MACADDR",
|
||||
T__inet: "_INET",
|
||||
T_bpchar: "BPCHAR",
|
||||
T_varchar: "VARCHAR",
|
||||
T_date: "DATE",
|
||||
T_time: "TIME",
|
||||
T_timestamp: "TIMESTAMP",
|
||||
T__timestamp: "_TIMESTAMP",
|
||||
T__date: "_DATE",
|
||||
T__time: "_TIME",
|
||||
T_timestamptz: "TIMESTAMPTZ",
|
||||
T__timestamptz: "_TIMESTAMPTZ",
|
||||
T_interval: "INTERVAL",
|
||||
T__interval: "_INTERVAL",
|
||||
T__numeric: "_NUMERIC",
|
||||
T_pg_database: "PG_DATABASE",
|
||||
T__cstring: "_CSTRING",
|
||||
T_timetz: "TIMETZ",
|
||||
T__timetz: "_TIMETZ",
|
||||
T_bit: "BIT",
|
||||
T__bit: "_BIT",
|
||||
T_varbit: "VARBIT",
|
||||
T__varbit: "_VARBIT",
|
||||
T_numeric: "NUMERIC",
|
||||
T_refcursor: "REFCURSOR",
|
||||
T__refcursor: "_REFCURSOR",
|
||||
T_regprocedure: "REGPROCEDURE",
|
||||
T_regoper: "REGOPER",
|
||||
T_regoperator: "REGOPERATOR",
|
||||
T_regclass: "REGCLASS",
|
||||
T_regtype: "REGTYPE",
|
||||
T__regprocedure: "_REGPROCEDURE",
|
||||
T__regoper: "_REGOPER",
|
||||
T__regoperator: "_REGOPERATOR",
|
||||
T__regclass: "_REGCLASS",
|
||||
T__regtype: "_REGTYPE",
|
||||
T_record: "RECORD",
|
||||
T_cstring: "CSTRING",
|
||||
T_any: "ANY",
|
||||
T_anyarray: "ANYARRAY",
|
||||
T_void: "VOID",
|
||||
T_trigger: "TRIGGER",
|
||||
T_language_handler: "LANGUAGE_HANDLER",
|
||||
T_internal: "INTERNAL",
|
||||
T_opaque: "OPAQUE",
|
||||
T_anyelement: "ANYELEMENT",
|
||||
T__record: "_RECORD",
|
||||
T_anynonarray: "ANYNONARRAY",
|
||||
T_pg_authid: "PG_AUTHID",
|
||||
T_pg_auth_members: "PG_AUTH_MEMBERS",
|
||||
T__txid_snapshot: "_TXID_SNAPSHOT",
|
||||
T_uuid: "UUID",
|
||||
T__uuid: "_UUID",
|
||||
T_txid_snapshot: "TXID_SNAPSHOT",
|
||||
T_fdw_handler: "FDW_HANDLER",
|
||||
T_pg_lsn: "PG_LSN",
|
||||
T__pg_lsn: "_PG_LSN",
|
||||
T_tsm_handler: "TSM_HANDLER",
|
||||
T_anyenum: "ANYENUM",
|
||||
T_tsvector: "TSVECTOR",
|
||||
T_tsquery: "TSQUERY",
|
||||
T_gtsvector: "GTSVECTOR",
|
||||
T__tsvector: "_TSVECTOR",
|
||||
T__gtsvector: "_GTSVECTOR",
|
||||
T__tsquery: "_TSQUERY",
|
||||
T_regconfig: "REGCONFIG",
|
||||
T__regconfig: "_REGCONFIG",
|
||||
T_regdictionary: "REGDICTIONARY",
|
||||
T__regdictionary: "_REGDICTIONARY",
|
||||
T_jsonb: "JSONB",
|
||||
T__jsonb: "_JSONB",
|
||||
T_anyrange: "ANYRANGE",
|
||||
T_event_trigger: "EVENT_TRIGGER",
|
||||
T_int4range: "INT4RANGE",
|
||||
T__int4range: "_INT4RANGE",
|
||||
T_numrange: "NUMRANGE",
|
||||
T__numrange: "_NUMRANGE",
|
||||
T_tsrange: "TSRANGE",
|
||||
T__tsrange: "_TSRANGE",
|
||||
T_tstzrange: "TSTZRANGE",
|
||||
T__tstzrange: "_TSTZRANGE",
|
||||
T_daterange: "DATERANGE",
|
||||
T__daterange: "_DATERANGE",
|
||||
T_int8range: "INT8RANGE",
|
||||
T__int8range: "_INT8RANGE",
|
||||
T_pg_shseclabel: "PG_SHSECLABEL",
|
||||
T_regnamespace: "REGNAMESPACE",
|
||||
T__regnamespace: "_REGNAMESPACE",
|
||||
T_regrole: "REGROLE",
|
||||
T__regrole: "_REGROLE",
|
||||
}
|
||||
|
|
@ -0,0 +1,93 @@
|
|||
package pq
|
||||
|
||||
import (
|
||||
"math"
|
||||
"reflect"
|
||||
"time"
|
||||
|
||||
"github.com/lib/pq/oid"
|
||||
)
|
||||
|
||||
const headerSize = 4
|
||||
|
||||
type fieldDesc struct {
|
||||
// The object ID of the data type.
|
||||
OID oid.Oid
|
||||
// The data type size (see pg_type.typlen).
|
||||
// Note that negative values denote variable-width types.
|
||||
Len int
|
||||
// The type modifier (see pg_attribute.atttypmod).
|
||||
// The meaning of the modifier is type-specific.
|
||||
Mod int
|
||||
}
|
||||
|
||||
func (fd fieldDesc) Type() reflect.Type {
|
||||
switch fd.OID {
|
||||
case oid.T_int8:
|
||||
return reflect.TypeOf(int64(0))
|
||||
case oid.T_int4:
|
||||
return reflect.TypeOf(int32(0))
|
||||
case oid.T_int2:
|
||||
return reflect.TypeOf(int16(0))
|
||||
case oid.T_varchar, oid.T_text:
|
||||
return reflect.TypeOf("")
|
||||
case oid.T_bool:
|
||||
return reflect.TypeOf(false)
|
||||
case oid.T_date, oid.T_time, oid.T_timetz, oid.T_timestamp, oid.T_timestamptz:
|
||||
return reflect.TypeOf(time.Time{})
|
||||
case oid.T_bytea:
|
||||
return reflect.TypeOf([]byte(nil))
|
||||
default:
|
||||
return reflect.TypeOf(new(interface{})).Elem()
|
||||
}
|
||||
}
|
||||
|
||||
func (fd fieldDesc) Name() string {
|
||||
return oid.TypeName[fd.OID]
|
||||
}
|
||||
|
||||
func (fd fieldDesc) Length() (length int64, ok bool) {
|
||||
switch fd.OID {
|
||||
case oid.T_text, oid.T_bytea:
|
||||
return math.MaxInt64, true
|
||||
case oid.T_varchar, oid.T_bpchar:
|
||||
return int64(fd.Mod - headerSize), true
|
||||
default:
|
||||
return 0, false
|
||||
}
|
||||
}
|
||||
|
||||
func (fd fieldDesc) PrecisionScale() (precision, scale int64, ok bool) {
|
||||
switch fd.OID {
|
||||
case oid.T_numeric, oid.T__numeric:
|
||||
mod := fd.Mod - headerSize
|
||||
precision = int64((mod >> 16) & 0xffff)
|
||||
scale = int64(mod & 0xffff)
|
||||
return precision, scale, true
|
||||
default:
|
||||
return 0, 0, false
|
||||
}
|
||||
}
|
||||
|
||||
// ColumnTypeScanType returns the value type that can be used to scan types into.
|
||||
func (rs *rows) ColumnTypeScanType(index int) reflect.Type {
|
||||
return rs.colTyps[index].Type()
|
||||
}
|
||||
|
||||
// ColumnTypeDatabaseTypeName return the database system type name.
|
||||
func (rs *rows) ColumnTypeDatabaseTypeName(index int) string {
|
||||
return rs.colTyps[index].Name()
|
||||
}
|
||||
|
||||
// ColumnTypeLength returns the length of the column type if the column is a
|
||||
// variable length type. If the column is not a variable length type ok
|
||||
// should return false.
|
||||
func (rs *rows) ColumnTypeLength(index int) (length int64, ok bool) {
|
||||
return rs.colTyps[index].Length()
|
||||
}
|
||||
|
||||
// ColumnTypePrecisionScale should return the precision and scale for decimal
|
||||
// types. If not applicable, ok should be false.
|
||||
func (rs *rows) ColumnTypePrecisionScale(index int) (precision, scale int64, ok bool) {
|
||||
return rs.colTyps[index].PrecisionScale()
|
||||
}
|
||||
|
|
@ -0,0 +1,169 @@
|
|||
package pq
|
||||
|
||||
import (
|
||||
"crypto/tls"
|
||||
"crypto/x509"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"os"
|
||||
"os/user"
|
||||
"path/filepath"
|
||||
)
|
||||
|
||||
// ssl generates a function to upgrade a net.Conn based on the "sslmode" and
|
||||
// related settings. The function is nil when no upgrade should take place.
|
||||
func ssl(o values) (func(net.Conn) (net.Conn, error), error) {
|
||||
verifyCaOnly := false
|
||||
tlsConf := tls.Config{}
|
||||
switch mode := o["sslmode"]; mode {
|
||||
// "require" is the default.
|
||||
case "", "require":
|
||||
// We must skip TLS's own verification since it requires full
|
||||
// verification since Go 1.3.
|
||||
tlsConf.InsecureSkipVerify = true
|
||||
|
||||
// From http://www.postgresql.org/docs/current/static/libpq-ssl.html:
|
||||
//
|
||||
// Note: For backwards compatibility with earlier versions of
|
||||
// PostgreSQL, if a root CA file exists, the behavior of
|
||||
// sslmode=require will be the same as that of verify-ca, meaning the
|
||||
// server certificate is validated against the CA. Relying on this
|
||||
// behavior is discouraged, and applications that need certificate
|
||||
// validation should always use verify-ca or verify-full.
|
||||
if sslrootcert, ok := o["sslrootcert"]; ok {
|
||||
if _, err := os.Stat(sslrootcert); err == nil {
|
||||
verifyCaOnly = true
|
||||
} else {
|
||||
delete(o, "sslrootcert")
|
||||
}
|
||||
}
|
||||
case "verify-ca":
|
||||
// We must skip TLS's own verification since it requires full
|
||||
// verification since Go 1.3.
|
||||
tlsConf.InsecureSkipVerify = true
|
||||
verifyCaOnly = true
|
||||
case "verify-full":
|
||||
tlsConf.ServerName = o["host"]
|
||||
case "disable":
|
||||
return nil, nil
|
||||
default:
|
||||
return nil, fmterrorf(`unsupported sslmode %q; only "require" (default), "verify-full", "verify-ca", and "disable" supported`, mode)
|
||||
}
|
||||
|
||||
err := sslClientCertificates(&tlsConf, o)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
err = sslCertificateAuthority(&tlsConf, o)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
sslRenegotiation(&tlsConf)
|
||||
|
||||
return func(conn net.Conn) (net.Conn, error) {
|
||||
client := tls.Client(conn, &tlsConf)
|
||||
if verifyCaOnly {
|
||||
err := sslVerifyCertificateAuthority(client, &tlsConf)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
return client, nil
|
||||
}, nil
|
||||
}
|
||||
|
||||
// sslClientCertificates adds the certificate specified in the "sslcert" and
|
||||
// "sslkey" settings, or if they aren't set, from the .postgresql directory
|
||||
// in the user's home directory. The configured files must exist and have
|
||||
// the correct permissions.
|
||||
func sslClientCertificates(tlsConf *tls.Config, o values) error {
|
||||
// user.Current() might fail when cross-compiling. We have to ignore the
|
||||
// error and continue without home directory defaults, since we wouldn't
|
||||
// know from where to load them.
|
||||
user, _ := user.Current()
|
||||
|
||||
// In libpq, the client certificate is only loaded if the setting is not blank.
|
||||
//
|
||||
// https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1036-L1037
|
||||
sslcert := o["sslcert"]
|
||||
if len(sslcert) == 0 && user != nil {
|
||||
sslcert = filepath.Join(user.HomeDir, ".postgresql", "postgresql.crt")
|
||||
}
|
||||
// https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1045
|
||||
if len(sslcert) == 0 {
|
||||
return nil
|
||||
}
|
||||
// https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1050:L1054
|
||||
if _, err := os.Stat(sslcert); os.IsNotExist(err) {
|
||||
return nil
|
||||
} else if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// In libpq, the ssl key is only loaded if the setting is not blank.
|
||||
//
|
||||
// https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1123-L1222
|
||||
sslkey := o["sslkey"]
|
||||
if len(sslkey) == 0 && user != nil {
|
||||
sslkey = filepath.Join(user.HomeDir, ".postgresql", "postgresql.key")
|
||||
}
|
||||
|
||||
if len(sslkey) > 0 {
|
||||
if err := sslKeyPermissions(sslkey); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
cert, err := tls.LoadX509KeyPair(sslcert, sslkey)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
tlsConf.Certificates = []tls.Certificate{cert}
|
||||
return nil
|
||||
}
|
||||
|
||||
// sslCertificateAuthority adds the RootCA specified in the "sslrootcert" setting.
|
||||
func sslCertificateAuthority(tlsConf *tls.Config, o values) error {
|
||||
// In libpq, the root certificate is only loaded if the setting is not blank.
|
||||
//
|
||||
// https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L950-L951
|
||||
if sslrootcert := o["sslrootcert"]; len(sslrootcert) > 0 {
|
||||
tlsConf.RootCAs = x509.NewCertPool()
|
||||
|
||||
cert, err := ioutil.ReadFile(sslrootcert)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if !tlsConf.RootCAs.AppendCertsFromPEM(cert) {
|
||||
return fmterrorf("couldn't parse pem in sslrootcert")
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// sslVerifyCertificateAuthority carries out a TLS handshake to the server and
|
||||
// verifies the presented certificate against the CA, i.e. the one specified in
|
||||
// sslrootcert or the system CA if sslrootcert was not specified.
|
||||
func sslVerifyCertificateAuthority(client *tls.Conn, tlsConf *tls.Config) error {
|
||||
err := client.Handshake()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
certs := client.ConnectionState().PeerCertificates
|
||||
opts := x509.VerifyOptions{
|
||||
DNSName: client.ConnectionState().ServerName,
|
||||
Intermediates: x509.NewCertPool(),
|
||||
Roots: tlsConf.RootCAs,
|
||||
}
|
||||
for i, cert := range certs {
|
||||
if i == 0 {
|
||||
continue
|
||||
}
|
||||
opts.Intermediates.AddCert(cert)
|
||||
}
|
||||
_, err = certs[0].Verify(opts)
|
||||
return err
|
||||
}
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
// +build go1.7
|
||||
|
||||
package pq
|
||||
|
||||
import "crypto/tls"
|
||||
|
||||
// Accept renegotiation requests initiated by the backend.
|
||||
//
|
||||
// Renegotiation was deprecated then removed from PostgreSQL 9.5, but
|
||||
// the default configuration of older versions has it enabled. Redshift
|
||||
// also initiates renegotiations and cannot be reconfigured.
|
||||
func sslRenegotiation(conf *tls.Config) {
|
||||
conf.Renegotiation = tls.RenegotiateFreelyAsClient
|
||||
}
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
// +build !windows
|
||||
|
||||
package pq
|
||||
|
||||
import "os"
|
||||
|
||||
// sslKeyPermissions checks the permissions on user-supplied ssl key files.
|
||||
// The key file should have very little access.
|
||||
//
|
||||
// libpq does not check key file permissions on Windows.
|
||||
func sslKeyPermissions(sslkey string) error {
|
||||
info, err := os.Stat(sslkey)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if info.Mode().Perm()&0077 != 0 {
|
||||
return ErrSSLKeyHasWorldPermissions
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
// +build !go1.7
|
||||
|
||||
package pq
|
||||
|
||||
import "crypto/tls"
|
||||
|
||||
// Renegotiation is not supported by crypto/tls until Go 1.7.
|
||||
func sslRenegotiation(*tls.Config) {}
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
// +build windows
|
||||
|
||||
package pq
|
||||
|
||||
// sslKeyPermissions checks the permissions on user-supplied ssl key files.
|
||||
// The key file should have very little access.
|
||||
//
|
||||
// libpq does not check key file permissions on Windows.
|
||||
func sslKeyPermissions(string) error { return nil }
|
||||
|
|
@ -0,0 +1,76 @@
|
|||
package pq
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"net"
|
||||
nurl "net/url"
|
||||
"sort"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// ParseURL no longer needs to be used by clients of this library since supplying a URL as a
|
||||
// connection string to sql.Open() is now supported:
|
||||
//
|
||||
// sql.Open("postgres", "postgres://bob:secret@1.2.3.4:5432/mydb?sslmode=verify-full")
|
||||
//
|
||||
// It remains exported here for backwards-compatibility.
|
||||
//
|
||||
// ParseURL converts a url to a connection string for driver.Open.
|
||||
// Example:
|
||||
//
|
||||
// "postgres://bob:secret@1.2.3.4:5432/mydb?sslmode=verify-full"
|
||||
//
|
||||
// converts to:
|
||||
//
|
||||
// "user=bob password=secret host=1.2.3.4 port=5432 dbname=mydb sslmode=verify-full"
|
||||
//
|
||||
// A minimal example:
|
||||
//
|
||||
// "postgres://"
|
||||
//
|
||||
// This will be blank, causing driver.Open to use all of the defaults
|
||||
func ParseURL(url string) (string, error) {
|
||||
u, err := nurl.Parse(url)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
if u.Scheme != "postgres" && u.Scheme != "postgresql" {
|
||||
return "", fmt.Errorf("invalid connection protocol: %s", u.Scheme)
|
||||
}
|
||||
|
||||
var kvs []string
|
||||
escaper := strings.NewReplacer(` `, `\ `, `'`, `\'`, `\`, `\\`)
|
||||
accrue := func(k, v string) {
|
||||
if v != "" {
|
||||
kvs = append(kvs, k+"="+escaper.Replace(v))
|
||||
}
|
||||
}
|
||||
|
||||
if u.User != nil {
|
||||
v := u.User.Username()
|
||||
accrue("user", v)
|
||||
|
||||
v, _ = u.User.Password()
|
||||
accrue("password", v)
|
||||
}
|
||||
|
||||
if host, port, err := net.SplitHostPort(u.Host); err != nil {
|
||||
accrue("host", u.Host)
|
||||
} else {
|
||||
accrue("host", host)
|
||||
accrue("port", port)
|
||||
}
|
||||
|
||||
if u.Path != "" {
|
||||
accrue("dbname", u.Path[1:])
|
||||
}
|
||||
|
||||
q := u.Query()
|
||||
for k := range q {
|
||||
accrue(k, q.Get(k))
|
||||
}
|
||||
|
||||
sort.Strings(kvs) // Makes testing easier (not a performance concern)
|
||||
return strings.Join(kvs, " "), nil
|
||||
}
|
||||
|
|
@ -0,0 +1,24 @@
|
|||
// Package pq is a pure Go Postgres driver for the database/sql package.
|
||||
|
||||
// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris rumprun
|
||||
|
||||
package pq
|
||||
|
||||
import (
|
||||
"os"
|
||||
"os/user"
|
||||
)
|
||||
|
||||
func userCurrent() (string, error) {
|
||||
u, err := user.Current()
|
||||
if err == nil {
|
||||
return u.Username, nil
|
||||
}
|
||||
|
||||
name := os.Getenv("USER")
|
||||
if name != "" {
|
||||
return name, nil
|
||||
}
|
||||
|
||||
return "", ErrCouldNotDetectUsername
|
||||
}
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
// Package pq is a pure Go Postgres driver for the database/sql package.
|
||||
package pq
|
||||
|
||||
import (
|
||||
"path/filepath"
|
||||
"syscall"
|
||||
)
|
||||
|
||||
// Perform Windows user name lookup identically to libpq.
|
||||
//
|
||||
// The PostgreSQL code makes use of the legacy Win32 function
|
||||
// GetUserName, and that function has not been imported into stock Go.
|
||||
// GetUserNameEx is available though, the difference being that a
|
||||
// wider range of names are available. To get the output to be the
|
||||
// same as GetUserName, only the base (or last) component of the
|
||||
// result is returned.
|
||||
func userCurrent() (string, error) {
|
||||
pw_name := make([]uint16, 128)
|
||||
pwname_size := uint32(len(pw_name)) - 1
|
||||
err := syscall.GetUserNameEx(syscall.NameSamCompatible, &pw_name[0], &pwname_size)
|
||||
if err != nil {
|
||||
return "", ErrCouldNotDetectUsername
|
||||
}
|
||||
s := syscall.UTF16ToString(pw_name)
|
||||
u := filepath.Base(s)
|
||||
return u, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
package pq
|
||||
|
||||
import (
|
||||
"encoding/hex"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
// decodeUUIDBinary interprets the binary format of a uuid, returning it in text format.
|
||||
func decodeUUIDBinary(src []byte) ([]byte, error) {
|
||||
if len(src) != 16 {
|
||||
return nil, fmt.Errorf("pq: unable to decode uuid; bad length: %d", len(src))
|
||||
}
|
||||
|
||||
dst := make([]byte, 36)
|
||||
dst[8], dst[13], dst[18], dst[23] = '-', '-', '-', '-'
|
||||
hex.Encode(dst[0:], src[0:4])
|
||||
hex.Encode(dst[9:], src[4:6])
|
||||
hex.Encode(dst[14:], src[6:8])
|
||||
hex.Encode(dst[19:], src[8:10])
|
||||
hex.Encode(dst[24:], src[10:16])
|
||||
|
||||
return dst, nil
|
||||
}
|
||||
|
|
@ -206,6 +206,14 @@
|
|||
"branch": "master",
|
||||
"notests": true
|
||||
},
|
||||
{
|
||||
"importpath": "github.com/lib/pq",
|
||||
"repository": "https://github.com/lib/pq",
|
||||
"vcs": "git",
|
||||
"revision": "4ded0e9383f75c197b3a2aaa6d590ac52df6fd79",
|
||||
"branch": "master",
|
||||
"notests": true
|
||||
},
|
||||
{
|
||||
"importpath": "github.com/magefile/mage/mg",
|
||||
"repository": "https://github.com/magefile/mage",
|
||||
|
|
|
|||
Loading…
Reference in New Issue