syncthing/lib/model/folder_sendrecv_test.go

1373 lines
39 KiB
Go

// Copyright (C) 2014 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
package model
import (
"bytes"
"context"
"crypto/rand"
"errors"
"io"
"io/ioutil"
"os"
"path/filepath"
"runtime"
"strings"
"testing"
"time"
"github.com/syncthing/syncthing/lib/config"
"github.com/syncthing/syncthing/lib/events"
"github.com/syncthing/syncthing/lib/fs"
"github.com/syncthing/syncthing/lib/ignore"
"github.com/syncthing/syncthing/lib/osutil"
"github.com/syncthing/syncthing/lib/protocol"
"github.com/syncthing/syncthing/lib/scanner"
"github.com/syncthing/syncthing/lib/sync"
)
var blocks = []protocol.BlockInfo{
{Hash: []uint8{0xfa, 0x43, 0x23, 0x9b, 0xce, 0xe7, 0xb9, 0x7c, 0xa6, 0x2f, 0x0, 0x7c, 0xc6, 0x84, 0x87, 0x56, 0xa, 0x39, 0xe1, 0x9f, 0x74, 0xf3, 0xdd, 0xe7, 0x48, 0x6d, 0xb3, 0xf9, 0x8d, 0xf8, 0xe4, 0x71}}, // Zero'ed out block
{Offset: 0, Size: 0x20000, Hash: []uint8{0x7e, 0xad, 0xbc, 0x36, 0xae, 0xbb, 0xcf, 0x74, 0x43, 0xe2, 0x7a, 0x5a, 0x4b, 0xb8, 0x5b, 0xce, 0xe6, 0x9e, 0x1e, 0x10, 0xf9, 0x8a, 0xbc, 0x77, 0x95, 0x2, 0x29, 0x60, 0x9e, 0x96, 0xae, 0x6c}},
{Offset: 131072, Size: 0x20000, Hash: []uint8{0x3c, 0xc4, 0x20, 0xf4, 0xb, 0x2e, 0xcb, 0xb9, 0x5d, 0xce, 0x34, 0xa8, 0xc3, 0x92, 0xea, 0xf3, 0xda, 0x88, 0x33, 0xee, 0x7a, 0xb6, 0xe, 0xf1, 0x82, 0x5e, 0xb0, 0xa9, 0x26, 0xa9, 0xc0, 0xef}},
{Offset: 262144, Size: 0x20000, Hash: []uint8{0x76, 0xa8, 0xc, 0x69, 0xd7, 0x5c, 0x52, 0xfd, 0xdf, 0x55, 0xef, 0x44, 0xc1, 0xd6, 0x25, 0x48, 0x4d, 0x98, 0x48, 0x4d, 0xaa, 0x50, 0xf6, 0x6b, 0x32, 0x47, 0x55, 0x81, 0x6b, 0xed, 0xee, 0xfb}},
{Offset: 393216, Size: 0x20000, Hash: []uint8{0x44, 0x1e, 0xa4, 0xf2, 0x8d, 0x1f, 0xc3, 0x1b, 0x9d, 0xa5, 0x18, 0x5e, 0x59, 0x1b, 0xd8, 0x5c, 0xba, 0x7d, 0xb9, 0x8d, 0x70, 0x11, 0x5c, 0xea, 0xa1, 0x57, 0x4d, 0xcb, 0x3c, 0x5b, 0xf8, 0x6c}},
{Offset: 524288, Size: 0x20000, Hash: []uint8{0x8, 0x40, 0xd0, 0x5e, 0x80, 0x0, 0x0, 0x7c, 0x8b, 0xb3, 0x8b, 0xf7, 0x7b, 0x23, 0x26, 0x28, 0xab, 0xda, 0xcf, 0x86, 0x8f, 0xc2, 0x8a, 0x39, 0xc6, 0xe6, 0x69, 0x59, 0x97, 0xb6, 0x1a, 0x43}},
{Offset: 655360, Size: 0x20000, Hash: []uint8{0x38, 0x8e, 0x44, 0xcb, 0x30, 0xd8, 0x90, 0xf, 0xce, 0x7, 0x4b, 0x58, 0x86, 0xde, 0xce, 0x59, 0xa2, 0x46, 0xd2, 0xf9, 0xba, 0xaf, 0x35, 0x87, 0x38, 0xdf, 0xd2, 0xd, 0xf9, 0x45, 0xed, 0x91}},
{Offset: 786432, Size: 0x20000, Hash: []uint8{0x32, 0x28, 0xcd, 0xf, 0x37, 0x21, 0xe5, 0xd4, 0x1e, 0x58, 0x87, 0x73, 0x8e, 0x36, 0xdf, 0xb2, 0x70, 0x78, 0x56, 0xc3, 0x42, 0xff, 0xf7, 0x8f, 0x37, 0x95, 0x0, 0x26, 0xa, 0xac, 0x54, 0x72}},
{Offset: 917504, Size: 0x20000, Hash: []uint8{0x96, 0x6b, 0x15, 0x6b, 0xc4, 0xf, 0x19, 0x18, 0xca, 0xbb, 0x5f, 0xd6, 0xbb, 0xa2, 0xc6, 0x2a, 0xac, 0xbb, 0x8a, 0xb9, 0xce, 0xec, 0x4c, 0xdb, 0x78, 0xec, 0x57, 0x5d, 0x33, 0xf9, 0x8e, 0xaf}},
}
var folders = []string{"default"}
var diffTestData = []struct {
a string
b string
s int
d []protocol.BlockInfo
}{
{"contents", "contents", 1024, []protocol.BlockInfo{}},
{"", "", 1024, []protocol.BlockInfo{}},
{"contents", "contents", 3, []protocol.BlockInfo{}},
{"contents", "cantents", 3, []protocol.BlockInfo{{Offset: 0, Size: 3}}},
{"contents", "contants", 3, []protocol.BlockInfo{{Offset: 3, Size: 3}}},
{"contents", "cantants", 3, []protocol.BlockInfo{{Offset: 0, Size: 3}, {Offset: 3, Size: 3}}},
{"contents", "", 3, []protocol.BlockInfo{{Offset: 0, Size: 0}}},
{"", "contents", 3, []protocol.BlockInfo{{Offset: 0, Size: 3}, {Offset: 3, Size: 3}, {Offset: 6, Size: 2}}},
{"con", "contents", 3, []protocol.BlockInfo{{Offset: 3, Size: 3}, {Offset: 6, Size: 2}}},
{"contents", "con", 3, nil},
{"contents", "cont", 3, []protocol.BlockInfo{{Offset: 3, Size: 1}}},
{"cont", "contents", 3, []protocol.BlockInfo{{Offset: 3, Size: 3}, {Offset: 6, Size: 2}}},
}
func setupFile(filename string, blockNumbers []int) protocol.FileInfo {
// Create existing file
existingBlocks := make([]protocol.BlockInfo, len(blockNumbers))
for i := range blockNumbers {
existingBlocks[i] = blocks[blockNumbers[i]]
}
return protocol.FileInfo{
Name: filename,
Blocks: existingBlocks,
}
}
func createFile(t *testing.T, name string, fs fs.Filesystem) protocol.FileInfo {
t.Helper()
f, err := fs.Create(name)
must(t, err)
f.Close()
fi, err := fs.Stat(name)
must(t, err)
file, err := scanner.CreateFileInfo(fi, name, fs)
must(t, err)
return file
}
// Sets up a folder and model, but makes sure the services aren't actually running.
func setupSendReceiveFolder(t testing.TB, files ...protocol.FileInfo) (*testModel, *sendReceiveFolder) {
w, fcfg := tmpDefaultWrapper()
// Initialise model and stop immediately.
model := setupModel(t, w)
model.cancel()
<-model.stopped
f := model.folderRunners[fcfg.ID].(*sendReceiveFolder)
f.tempPullErrors = make(map[string]string)
f.ctx = context.Background()
// Update index
if files != nil {
f.updateLocalsFromScanning(files)
}
return model, f
}
func cleanupSRFolder(f *sendReceiveFolder, m *testModel) {
os.Remove(m.cfg.ConfigPath())
os.RemoveAll(f.Filesystem().URI())
}
// Layout of the files: (indexes from the above array)
// 12345678 - Required file
// 02005008 - Existing file (currently in the index)
// 02340070 - Temp file on the disk
func TestHandleFile(t *testing.T) {
// After the diff between required and existing we should:
// Copy: 2, 5, 8
// Pull: 1, 3, 4, 6, 7
existingBlocks := []int{0, 2, 0, 0, 5, 0, 0, 8}
existingFile := setupFile("filex", existingBlocks)
requiredFile := existingFile
requiredFile.Blocks = blocks[1:]
m, f := setupSendReceiveFolder(t, existingFile)
defer cleanupSRFolder(f, m)
copyChan := make(chan copyBlocksState, 1)
f.handleFile(requiredFile, f.fset.Snapshot(), copyChan)
// Receive the results
toCopy := <-copyChan
if len(toCopy.blocks) != 8 {
t.Errorf("Unexpected count of copy blocks: %d != 8", len(toCopy.blocks))
}
for _, block := range blocks[1:] {
found := false
for _, toCopyBlock := range toCopy.blocks {
if string(toCopyBlock.Hash) == string(block.Hash) {
found = true
break
}
}
if !found {
t.Errorf("Did not find block %s", block.String())
}
}
}
func TestHandleFileWithTemp(t *testing.T) {
// After diff between required and existing we should:
// Copy: 2, 5, 8
// Pull: 1, 3, 4, 6, 7
// After dropping out blocks already on the temp file we should:
// Copy: 5, 8
// Pull: 1, 6
existingBlocks := []int{0, 2, 0, 0, 5, 0, 0, 8}
existingFile := setupFile("file", existingBlocks)
requiredFile := existingFile
requiredFile.Blocks = blocks[1:]
m, f := setupSendReceiveFolder(t, existingFile)
defer cleanupSRFolder(f, m)
if _, err := prepareTmpFile(f.Filesystem()); err != nil {
t.Fatal(err)
}
copyChan := make(chan copyBlocksState, 1)
f.handleFile(requiredFile, f.fset.Snapshot(), copyChan)
// Receive the results
toCopy := <-copyChan
if len(toCopy.blocks) != 4 {
t.Errorf("Unexpected count of copy blocks: %d != 4", len(toCopy.blocks))
}
for _, idx := range []int{1, 5, 6, 8} {
found := false
block := blocks[idx]
for _, toCopyBlock := range toCopy.blocks {
if string(toCopyBlock.Hash) == string(block.Hash) {
found = true
break
}
}
if !found {
t.Errorf("Did not find block %s", block.String())
}
}
}
func TestCopierFinder(t *testing.T) {
methods := []fs.CopyRangeMethod{fs.CopyRangeMethodStandard, fs.CopyRangeMethodAllWithFallback}
if runtime.GOOS == "linux" {
methods = append(methods, fs.CopyRangeMethodSendFile)
}
for _, method := range methods {
t.Run(method.String(), func(t *testing.T) {
// After diff between required and existing we should:
// Copy: 1, 2, 3, 4, 6, 7, 8
// Since there is no existing file, nor a temp file
// After dropping out blocks found locally:
// Pull: 1, 5, 6, 8
tempFile := fs.TempName("file2")
existingBlocks := []int{0, 2, 3, 4, 0, 0, 7, 0}
existingFile := setupFile(fs.TempName("file"), existingBlocks)
existingFile.Size = 1
requiredFile := existingFile
requiredFile.Blocks = blocks[1:]
requiredFile.Name = "file2"
m, f := setupSendReceiveFolder(t, existingFile)
f.CopyRangeMethod = method
defer cleanupSRFolder(f, m)
if _, err := prepareTmpFile(f.Filesystem()); err != nil {
t.Fatal(err)
}
copyChan := make(chan copyBlocksState)
pullChan := make(chan pullBlockState, 4)
finisherChan := make(chan *sharedPullerState, 1)
// Run a single fetcher routine
go f.copierRoutine(copyChan, pullChan, finisherChan)
defer close(copyChan)
f.handleFile(requiredFile, f.fset.Snapshot(), copyChan)
timeout := time.After(10 * time.Second)
pulls := make([]pullBlockState, 4)
for i := 0; i < 4; i++ {
select {
case pulls[i] = <-pullChan:
case <-timeout:
t.Fatalf("Timed out before receiving all 4 states on pullChan (already got %v)", i)
}
}
var finish *sharedPullerState
select {
case finish = <-finisherChan:
case <-timeout:
t.Fatal("Timed out before receiving 4 states on pullChan")
}
defer cleanupSharedPullerState(finish)
select {
case <-pullChan:
t.Fatal("Pull channel has data to be read")
case <-finisherChan:
t.Fatal("Finisher channel has data to be read")
default:
}
// Verify that the right blocks went into the pull list.
// They are pulled in random order.
for _, idx := range []int{1, 5, 6, 8} {
found := false
block := blocks[idx]
for _, pulledBlock := range pulls {
if string(pulledBlock.block.Hash) == string(block.Hash) {
found = true
break
}
}
if !found {
t.Errorf("Did not find block %s", block.String())
}
if string(finish.file.Blocks[idx-1].Hash) != string(blocks[idx].Hash) {
t.Errorf("Block %d mismatch: %s != %s", idx, finish.file.Blocks[idx-1].String(), blocks[idx].String())
}
}
// Verify that the fetched blocks have actually been written to the temp file
blks, err := scanner.HashFile(context.TODO(), f.Filesystem(), tempFile, protocol.MinBlockSize, nil, false)
if err != nil {
t.Log(err)
}
for _, eq := range []int{2, 3, 4, 7} {
if string(blks[eq-1].Hash) != string(blocks[eq].Hash) {
t.Errorf("Block %d mismatch: %s != %s", eq, blks[eq-1].String(), blocks[eq].String())
}
}
})
}
}
func TestWeakHash(t *testing.T) {
// Setup the model/pull environment
model, fo := setupSendReceiveFolder(t)
defer cleanupSRFolder(fo, model)
ffs := fo.Filesystem()
tempFile := fs.TempName("weakhash")
var shift int64 = 10
var size int64 = 1 << 20
expectBlocks := int(size / protocol.MinBlockSize)
expectPulls := int(shift / protocol.MinBlockSize)
if shift > 0 {
expectPulls++
}
f, err := ffs.Create("weakhash")
must(t, err)
defer f.Close()
_, err = io.CopyN(f, rand.Reader, size)
if err != nil {
t.Error(err)
}
info, err := f.Stat()
if err != nil {
t.Error(err)
}
// Create two files, second file has `shifted` bytes random prefix, yet
// both are of the same length, for example:
// File 1: abcdefgh
// File 2: xyabcdef
f.Seek(0, os.SEEK_SET)
existing, err := scanner.Blocks(context.TODO(), f, protocol.MinBlockSize, size, nil, true)
if err != nil {
t.Error(err)
}
f.Seek(0, os.SEEK_SET)
remainder := io.LimitReader(f, size-shift)
prefix := io.LimitReader(rand.Reader, shift)
nf := io.MultiReader(prefix, remainder)
desired, err := scanner.Blocks(context.TODO(), nf, protocol.MinBlockSize, size, nil, true)
if err != nil {
t.Error(err)
}
existingFile := protocol.FileInfo{
Name: "weakhash",
Blocks: existing,
Size: size,
ModifiedS: info.ModTime().Unix(),
ModifiedNs: info.ModTime().Nanosecond(),
}
desiredFile := protocol.FileInfo{
Name: "weakhash",
Size: size,
Blocks: desired,
ModifiedS: info.ModTime().Unix() + 1,
}
fo.updateLocalsFromScanning([]protocol.FileInfo{existingFile})
copyChan := make(chan copyBlocksState)
pullChan := make(chan pullBlockState, expectBlocks)
finisherChan := make(chan *sharedPullerState, 1)
// Run a single fetcher routine
go fo.copierRoutine(copyChan, pullChan, finisherChan)
defer close(copyChan)
// Test 1 - no weak hashing, file gets fully repulled (`expectBlocks` pulls).
fo.WeakHashThresholdPct = 101
fo.handleFile(desiredFile, fo.fset.Snapshot(), copyChan)
var pulls []pullBlockState
timeout := time.After(10 * time.Second)
for len(pulls) < expectBlocks {
select {
case pull := <-pullChan:
pulls = append(pulls, pull)
case <-timeout:
t.Fatalf("timed out, got %d pulls expected %d", len(pulls), expectPulls)
}
}
finish := <-finisherChan
select {
case <-pullChan:
t.Fatal("Pull channel has data to be read")
case <-finisherChan:
t.Fatal("Finisher channel has data to be read")
default:
}
cleanupSharedPullerState(finish)
if err := ffs.Remove(tempFile); err != nil {
t.Fatal(err)
}
// Test 2 - using weak hash, expectPulls blocks pulled.
fo.WeakHashThresholdPct = -1
fo.handleFile(desiredFile, fo.fset.Snapshot(), copyChan)
pulls = pulls[:0]
for len(pulls) < expectPulls {
select {
case pull := <-pullChan:
pulls = append(pulls, pull)
case <-time.After(10 * time.Second):
t.Fatalf("timed out, got %d pulls expected %d", len(pulls), expectPulls)
}
}
finish = <-finisherChan
cleanupSharedPullerState(finish)
expectShifted := expectBlocks - expectPulls
if finish.copyOriginShifted != expectShifted {
t.Errorf("did not copy %d shifted", expectShifted)
}
}
// Test that updating a file removes its old blocks from the blockmap
func TestCopierCleanup(t *testing.T) {
iterFn := func(folder, file string, index int32) bool {
return true
}
// Create a file
file := setupFile("test", []int{0})
file.Size = 1
m, f := setupSendReceiveFolder(t, file)
defer cleanupSRFolder(f, m)
file.Blocks = []protocol.BlockInfo{blocks[1]}
file.Version = file.Version.Update(myID.Short())
// Update index (removing old blocks)
f.updateLocalsFromScanning([]protocol.FileInfo{file})
if m.finder.Iterate(folders, blocks[0].Hash, iterFn) {
t.Error("Unexpected block found")
}
if !m.finder.Iterate(folders, blocks[1].Hash, iterFn) {
t.Error("Expected block not found")
}
file.Blocks = []protocol.BlockInfo{blocks[0]}
file.Version = file.Version.Update(myID.Short())
// Update index (removing old blocks)
f.updateLocalsFromScanning([]protocol.FileInfo{file})
if !m.finder.Iterate(folders, blocks[0].Hash, iterFn) {
t.Error("Unexpected block found")
}
if m.finder.Iterate(folders, blocks[1].Hash, iterFn) {
t.Error("Expected block not found")
}
}
func TestDeregisterOnFailInCopy(t *testing.T) {
file := setupFile("filex", []int{0, 2, 0, 0, 5, 0, 0, 8})
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
// Set up our evet subscription early
s := m.evLogger.Subscribe(events.ItemFinished)
// queue.Done should be called by the finisher routine
f.queue.Push("filex", 0, time.Time{})
f.queue.Pop()
if f.queue.lenProgress() != 1 {
t.Fatal("Expected file in progress")
}
pullChan := make(chan pullBlockState)
finisherBufferChan := make(chan *sharedPullerState, 1)
finisherChan := make(chan *sharedPullerState)
dbUpdateChan := make(chan dbUpdateJob, 1)
snap := f.fset.Snapshot()
copyChan, copyWg := startCopier(f, pullChan, finisherBufferChan)
go f.finisherRoutine(snap, finisherChan, dbUpdateChan, make(chan string))
defer func() {
close(copyChan)
copyWg.Wait()
close(pullChan)
close(finisherBufferChan)
close(finisherChan)
}()
f.handleFile(file, snap, copyChan)
// Receive a block at puller, to indicate that at least a single copier
// loop has been performed.
var toPull pullBlockState
select {
case toPull = <-pullChan:
case <-time.After(10 * time.Second):
t.Fatal("timed out")
}
// Unblock copier
go func() {
for range pullChan {
}
}()
// Close the file, causing errors on further access
toPull.sharedPullerState.fail(os.ErrNotExist)
select {
case state := <-finisherBufferChan:
// At this point the file should still be registered with both the job
// queue, and the progress emitter. Verify this.
if f.model.progressEmitter.lenRegistry() != 1 || f.queue.lenProgress() != 1 || f.queue.lenQueued() != 0 {
t.Fatal("Could not find file")
}
// Pass the file down the real finisher, and give it time to consume
finisherChan <- state
t0 := time.Now()
if ev, err := s.Poll(time.Minute); err != nil {
t.Fatal("Got error waiting for ItemFinished event:", err)
} else if n := ev.Data.(map[string]interface{})["item"]; n != state.file.Name {
t.Fatal("Got ItemFinished event for wrong file:", n)
}
t.Log("event took", time.Since(t0))
state.mut.Lock()
stateWriter := state.writer
state.mut.Unlock()
if stateWriter != nil {
t.Fatal("File not closed?")
}
if f.model.progressEmitter.lenRegistry() != 0 || f.queue.lenProgress() != 0 || f.queue.lenQueued() != 0 {
t.Fatal("Still registered", f.model.progressEmitter.lenRegistry(), f.queue.lenProgress(), f.queue.lenQueued())
}
// Doing it again should have no effect
finisherChan <- state
if _, err := s.Poll(time.Second); err != events.ErrTimeout {
t.Fatal("Expected timeout, not another event", err)
}
if f.model.progressEmitter.lenRegistry() != 0 || f.queue.lenProgress() != 0 || f.queue.lenQueued() != 0 {
t.Fatal("Still registered", f.model.progressEmitter.lenRegistry(), f.queue.lenProgress(), f.queue.lenQueued())
}
case <-time.After(5 * time.Second):
t.Fatal("Didn't get anything to the finisher")
}
}
func TestDeregisterOnFailInPull(t *testing.T) {
file := setupFile("filex", []int{0, 2, 0, 0, 5, 0, 0, 8})
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
// Set up our evet subscription early
s := m.evLogger.Subscribe(events.ItemFinished)
// queue.Done should be called by the finisher routine
f.queue.Push("filex", 0, time.Time{})
f.queue.Pop()
if f.queue.lenProgress() != 1 {
t.Fatal("Expected file in progress")
}
pullChan := make(chan pullBlockState)
finisherBufferChan := make(chan *sharedPullerState)
finisherChan := make(chan *sharedPullerState)
dbUpdateChan := make(chan dbUpdateJob, 1)
snap := f.fset.Snapshot()
copyChan, copyWg := startCopier(f, pullChan, finisherBufferChan)
pullWg := sync.NewWaitGroup()
pullWg.Add(1)
go func() {
f.pullerRoutine(pullChan, finisherBufferChan)
pullWg.Done()
}()
go f.finisherRoutine(snap, finisherChan, dbUpdateChan, make(chan string))
defer func() {
// Unblock copier and puller
go func() {
for range finisherBufferChan {
}
}()
close(copyChan)
copyWg.Wait()
close(pullChan)
pullWg.Wait()
close(finisherBufferChan)
close(finisherChan)
}()
f.handleFile(file, snap, copyChan)
// Receive at finisher, we should error out as puller has nowhere to pull
// from.
timeout = time.Second
// Both the puller and copier may send to the finisherBufferChan.
var state *sharedPullerState
after := time.After(5 * time.Second)
for {
select {
case state = <-finisherBufferChan:
case <-after:
t.Fatal("Didn't get failed state to the finisher")
}
if state.failed() != nil {
break
}
}
// At this point the file should still be registered with both the job
// queue, and the progress emitter. Verify this.
if f.model.progressEmitter.lenRegistry() != 1 || f.queue.lenProgress() != 1 || f.queue.lenQueued() != 0 {
t.Fatal("Could not find file")
}
// Pass the file down the real finisher, and give it time to consume
finisherChan <- state
t0 := time.Now()
if ev, err := s.Poll(time.Minute); err != nil {
t.Fatal("Got error waiting for ItemFinished event:", err)
} else if n := ev.Data.(map[string]interface{})["item"]; n != state.file.Name {
t.Fatal("Got ItemFinished event for wrong file:", n)
}
t.Log("event took", time.Since(t0))
state.mut.Lock()
stateWriter := state.writer
state.mut.Unlock()
if stateWriter != nil {
t.Fatal("File not closed?")
}
if f.model.progressEmitter.lenRegistry() != 0 || f.queue.lenProgress() != 0 || f.queue.lenQueued() != 0 {
t.Fatal("Still registered", f.model.progressEmitter.lenRegistry(), f.queue.lenProgress(), f.queue.lenQueued())
}
// Doing it again should have no effect
finisherChan <- state
if _, err := s.Poll(time.Second); err != events.ErrTimeout {
t.Fatal("Expected timeout, not another event", err)
}
if f.model.progressEmitter.lenRegistry() != 0 || f.queue.lenProgress() != 0 || f.queue.lenQueued() != 0 {
t.Fatal("Still registered", f.model.progressEmitter.lenRegistry(), f.queue.lenProgress(), f.queue.lenQueued())
}
}
func TestIssue3164(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
ffs := f.Filesystem()
tmpDir := ffs.URI()
ignDir := filepath.Join("issue3164", "oktodelete")
subDir := filepath.Join(ignDir, "foobar")
must(t, ffs.MkdirAll(subDir, 0777))
must(t, ioutil.WriteFile(filepath.Join(tmpDir, subDir, "file"), []byte("Hello"), 0644))
must(t, ioutil.WriteFile(filepath.Join(tmpDir, ignDir, "file"), []byte("Hello"), 0644))
file := protocol.FileInfo{
Name: "issue3164",
}
must(t, f.scanSubdirs(nil))
matcher := ignore.New(ffs)
must(t, matcher.Parse(bytes.NewBufferString("(?d)oktodelete"), ""))
f.ignores = matcher
dbUpdateChan := make(chan dbUpdateJob, 1)
f.deleteDir(file, f.fset.Snapshot(), dbUpdateChan, make(chan string))
if _, err := ffs.Stat("issue3164"); !fs.IsNotExist(err) {
t.Fatal(err)
}
}
func TestDiff(t *testing.T) {
for i, test := range diffTestData {
a, _ := scanner.Blocks(context.TODO(), bytes.NewBufferString(test.a), test.s, -1, nil, false)
b, _ := scanner.Blocks(context.TODO(), bytes.NewBufferString(test.b), test.s, -1, nil, false)
_, d := blockDiff(a, b)
if len(d) != len(test.d) {
t.Fatalf("Incorrect length for diff %d; %d != %d", i, len(d), len(test.d))
} else {
for j := range test.d {
if d[j].Offset != test.d[j].Offset {
t.Errorf("Incorrect offset for diff %d block %d; %d != %d", i, j, d[j].Offset, test.d[j].Offset)
}
if d[j].Size != test.d[j].Size {
t.Errorf("Incorrect length for diff %d block %d; %d != %d", i, j, d[j].Size, test.d[j].Size)
}
}
}
}
}
func BenchmarkDiff(b *testing.B) {
testCases := make([]struct{ a, b []protocol.BlockInfo }, 0, len(diffTestData))
for _, test := range diffTestData {
a, _ := scanner.Blocks(context.TODO(), bytes.NewBufferString(test.a), test.s, -1, nil, false)
b, _ := scanner.Blocks(context.TODO(), bytes.NewBufferString(test.b), test.s, -1, nil, false)
testCases = append(testCases, struct{ a, b []protocol.BlockInfo }{a, b})
}
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, tc := range testCases {
blockDiff(tc.a, tc.b)
}
}
}
func TestDiffEmpty(t *testing.T) {
emptyCases := []struct {
a []protocol.BlockInfo
b []protocol.BlockInfo
need int
have int
}{
{nil, nil, 0, 0},
{[]protocol.BlockInfo{{Offset: 3, Size: 1}}, nil, 0, 0},
{nil, []protocol.BlockInfo{{Offset: 3, Size: 1}}, 1, 0},
}
for _, emptyCase := range emptyCases {
h, n := blockDiff(emptyCase.a, emptyCase.b)
if len(h) != emptyCase.have {
t.Errorf("incorrect have: %d != %d", len(h), emptyCase.have)
}
if len(n) != emptyCase.need {
t.Errorf("incorrect have: %d != %d", len(h), emptyCase.have)
}
}
}
// TestDeleteIgnorePerms checks, that a file gets deleted when the IgnorePerms
// option is true and the permissions do not match between the file on disk and
// in the db.
func TestDeleteIgnorePerms(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
ffs := f.Filesystem()
f.IgnorePerms = true
name := "deleteIgnorePerms"
file, err := ffs.Create(name)
if err != nil {
t.Error(err)
}
defer file.Close()
stat, err := file.Stat()
must(t, err)
fi, err := scanner.CreateFileInfo(stat, name, ffs)
must(t, err)
ffs.Chmod(name, 0600)
scanChan := make(chan string, 1)
err = f.checkToBeDeleted(fi, fi, true, scanChan)
must(t, err)
}
func TestCopyOwner(t *testing.T) {
// Verifies that owner and group are copied from the parent, for both
// files and directories.
if runtime.GOOS == "windows" {
t.Skip("copying owner not supported on Windows")
}
const (
expOwner = 1234
expGroup = 5678
)
// Set up a folder with the CopyParentOwner bit and backed by a fake
// filesystem.
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
f.folder.FolderConfiguration = config.NewFolderConfiguration(m.id, f.ID, f.Label, fs.FilesystemTypeFake, "/TestCopyOwner")
f.folder.FolderConfiguration.CopyOwnershipFromParent = true
f.fs = f.Filesystem()
// Create a parent dir with a certain owner/group.
f.fs.Mkdir("foo", 0755)
f.fs.Lchown("foo", expOwner, expGroup)
dir := protocol.FileInfo{
Name: "foo/bar",
Type: protocol.FileInfoTypeDirectory,
Permissions: 0755,
}
// Have the folder create a subdirectory, verify that it's the correct
// owner/group.
dbUpdateChan := make(chan dbUpdateJob, 1)
scanChan := make(chan string)
defer close(dbUpdateChan)
f.handleDir(dir, f.fset.Snapshot(), dbUpdateChan, scanChan)
select {
case <-dbUpdateChan: // empty the channel for later
case toScan := <-scanChan:
t.Fatal("Unexpected receive on scanChan:", toScan)
}
info, err := f.fs.Lstat("foo/bar")
if err != nil {
t.Fatal("Unexpected error (dir):", err)
}
if info.Owner() != expOwner || info.Group() != expGroup {
t.Fatalf("Expected dir owner/group to be %d/%d, not %d/%d", expOwner, expGroup, info.Owner(), info.Group())
}
// Have the folder create a file, verify it's the correct owner/group.
// File is zero sized to avoid having to handle copies/pulls.
file := protocol.FileInfo{
Name: "foo/bar/baz",
Type: protocol.FileInfoTypeFile,
Permissions: 0644,
}
// Wire some stuff. The flow here is handleFile() -[copierChan]->
// copierRoutine() -[finisherChan]-> finisherRoutine() -[dbUpdateChan]->
// back to us and we're done. The copier routine doesn't do anything,
// but it's the way data is passed around. When the database update
// comes the finisher is done.
snap := f.fset.Snapshot()
finisherChan := make(chan *sharedPullerState)
copierChan, copyWg := startCopier(f, nil, finisherChan)
go f.finisherRoutine(snap, finisherChan, dbUpdateChan, nil)
defer func() {
close(copierChan)
copyWg.Wait()
close(finisherChan)
}()
f.handleFile(file, snap, copierChan)
<-dbUpdateChan
info, err = f.fs.Lstat("foo/bar/baz")
if err != nil {
t.Fatal("Unexpected error (file):", err)
}
if info.Owner() != expOwner || info.Group() != expGroup {
t.Fatalf("Expected file owner/group to be %d/%d, not %d/%d", expOwner, expGroup, info.Owner(), info.Group())
}
// Have the folder create a symlink. Verify it accordingly.
symlink := protocol.FileInfo{
Name: "foo/bar/sym",
Type: protocol.FileInfoTypeSymlink,
Permissions: 0644,
SymlinkTarget: "over the rainbow",
}
f.handleSymlink(symlink, snap, dbUpdateChan, scanChan)
select {
case <-dbUpdateChan:
case toScan := <-scanChan:
t.Fatal("Unexpected receive on scanChan:", toScan)
}
info, err = f.fs.Lstat("foo/bar/sym")
if err != nil {
t.Fatal("Unexpected error (file):", err)
}
if info.Owner() != expOwner || info.Group() != expGroup {
t.Fatalf("Expected symlink owner/group to be %d/%d, not %d/%d", expOwner, expGroup, info.Owner(), info.Group())
}
}
// TestSRConflictReplaceFileByDir checks that a conflict is created when an existing file
// is replaced with a directory and versions are conflicting
func TestSRConflictReplaceFileByDir(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
ffs := f.Filesystem()
name := "foo"
// create local file
file := createFile(t, name, ffs)
file.Version = protocol.Vector{}.Update(myID.Short())
f.updateLocalsFromScanning([]protocol.FileInfo{file})
// Simulate remote creating a dir with the same name
file.Type = protocol.FileInfoTypeDirectory
rem := device1.Short()
file.Version = protocol.Vector{}.Update(rem)
file.ModifiedBy = rem
dbUpdateChan := make(chan dbUpdateJob, 1)
scanChan := make(chan string, 1)
f.handleDir(file, f.fset.Snapshot(), dbUpdateChan, scanChan)
if confls := existingConflicts(name, ffs); len(confls) != 1 {
t.Fatal("Expected one conflict, got", len(confls))
} else if scan := <-scanChan; confls[0] != scan {
t.Fatal("Expected request to scan", confls[0], "got", scan)
}
}
// TestSRConflictReplaceFileByLink checks that a conflict is created when an existing file
// is replaced with a link and versions are conflicting
func TestSRConflictReplaceFileByLink(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
ffs := f.Filesystem()
name := "foo"
// create local file
file := createFile(t, name, ffs)
file.Version = protocol.Vector{}.Update(myID.Short())
f.updateLocalsFromScanning([]protocol.FileInfo{file})
// Simulate remote creating a symlink with the same name
file.Type = protocol.FileInfoTypeSymlink
file.SymlinkTarget = "bar"
rem := device1.Short()
file.Version = protocol.Vector{}.Update(rem)
file.ModifiedBy = rem
dbUpdateChan := make(chan dbUpdateJob, 1)
scanChan := make(chan string, 1)
f.handleSymlink(file, f.fset.Snapshot(), dbUpdateChan, scanChan)
if confls := existingConflicts(name, ffs); len(confls) != 1 {
t.Fatal("Expected one conflict, got", len(confls))
} else if scan := <-scanChan; confls[0] != scan {
t.Fatal("Expected request to scan", confls[0], "got", scan)
}
}
// TestDeleteBehindSymlink checks that we don't delete or schedule a scan
// when trying to delete a file behind a symlink.
func TestDeleteBehindSymlink(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
ffs := f.Filesystem()
destDir := createTmpDir()
defer os.RemoveAll(destDir)
destFs := fs.NewFilesystem(fs.FilesystemTypeBasic, destDir)
link := "link"
file := filepath.Join(link, "file")
must(t, ffs.MkdirAll(link, 0755))
fi := createFile(t, file, ffs)
f.updateLocalsFromScanning([]protocol.FileInfo{fi})
must(t, osutil.RenameOrCopy(fs.CopyRangeMethodStandard, ffs, destFs, file, "file"))
must(t, ffs.RemoveAll(link))
if err := fs.DebugSymlinkForTestsOnly(destFs, ffs, "", link); err != nil {
if runtime.GOOS == "windows" {
// Probably we require permissions we don't have.
t.Skip("Need admin permissions or developer mode to run symlink test on Windows: " + err.Error())
} else {
t.Fatal(err)
}
}
fi.Deleted = true
fi.Version = fi.Version.Update(device1.Short())
scanChan := make(chan string, 1)
dbUpdateChan := make(chan dbUpdateJob, 1)
f.deleteFile(fi, f.fset.Snapshot(), dbUpdateChan, scanChan)
select {
case f := <-scanChan:
t.Fatalf("Received %v on scanChan", f)
case u := <-dbUpdateChan:
if u.jobType != dbUpdateDeleteFile {
t.Errorf("Expected jobType %v, got %v", dbUpdateDeleteFile, u.jobType)
}
if u.file.Name != fi.Name {
t.Errorf("Expected update for %v, got %v", fi.Name, u.file.Name)
}
default:
t.Fatalf("No db update received")
}
if _, err := destFs.Stat("file"); err != nil {
t.Errorf("Expected no error when stating file behind symlink, got %v", err)
}
}
// Reproduces https://github.com/syncthing/syncthing/issues/6559
func TestPullCtxCancel(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
pullChan := make(chan pullBlockState)
finisherChan := make(chan *sharedPullerState)
var cancel context.CancelFunc
f.ctx, cancel = context.WithCancel(context.Background())
go f.pullerRoutine(pullChan, finisherChan)
defer close(pullChan)
emptyState := func() pullBlockState {
return pullBlockState{
sharedPullerState: newSharedPullerState(protocol.FileInfo{}, nil, f.folderID, "", nil, nil, false, false, protocol.FileInfo{}, false, false),
block: protocol.BlockInfo{},
}
}
cancel()
done := make(chan struct{})
defer close(done)
for i := 0; i < 2; i++ {
go func() {
select {
case pullChan <- emptyState():
case <-done:
}
}()
select {
case s := <-finisherChan:
if s.failed() == nil {
t.Errorf("state %v not failed", i)
}
case <-time.After(5 * time.Second):
t.Fatalf("timed out before receiving state %v on finisherChan", i)
}
}
}
func TestPullDeleteUnscannedDir(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
ffs := f.Filesystem()
dir := "foobar"
must(t, ffs.MkdirAll(dir, 0777))
fi := protocol.FileInfo{
Name: dir,
}
scanChan := make(chan string, 1)
dbUpdateChan := make(chan dbUpdateJob, 1)
f.deleteDir(fi, f.fset.Snapshot(), dbUpdateChan, scanChan)
if _, err := ffs.Stat(dir); fs.IsNotExist(err) {
t.Error("directory has been deleted")
}
select {
case toScan := <-scanChan:
if toScan != dir {
t.Errorf("expected %v to be scanned, got %v", dir, toScan)
}
default:
t.Error("nothing was scheduled for scanning")
}
}
func TestPullCaseOnlyPerformFinish(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
ffs := f.Filesystem()
name := "foo"
contents := []byte("contents")
must(t, writeFile(ffs, name, contents, 0644))
must(t, f.scanSubdirs(nil))
var cur protocol.FileInfo
hasCur := false
snap := dbSnapshot(t, m, f.ID)
defer snap.Release()
snap.WithHave(protocol.LocalDeviceID, func(i protocol.FileIntf) bool {
if hasCur {
t.Fatal("got more than one file")
}
cur = i.(protocol.FileInfo)
hasCur = true
return true
})
if !hasCur {
t.Fatal("file is missing")
}
remote := *(&cur)
remote.Version = protocol.Vector{}.Update(device1.Short())
remote.Name = strings.ToUpper(cur.Name)
temp := fs.TempName(remote.Name)
must(t, writeFile(ffs, temp, contents, 0644))
scanChan := make(chan string, 1)
dbUpdateChan := make(chan dbUpdateJob, 1)
err := f.performFinish(remote, cur, hasCur, temp, snap, dbUpdateChan, scanChan)
select {
case <-dbUpdateChan: // boring case sensitive filesystem
return
case <-scanChan:
t.Error("no need to scan anything here")
default:
}
var caseErr *fs.ErrCaseConflict
if !errors.As(err, &caseErr) {
t.Error("Expected case conflict error, got", err)
}
}
func TestPullCaseOnlyDir(t *testing.T) {
testPullCaseOnlyDirOrSymlink(t, true)
}
func TestPullCaseOnlySymlink(t *testing.T) {
if runtime.GOOS == "windows" {
t.Skip("symlinks not supported on windows")
}
testPullCaseOnlyDirOrSymlink(t, false)
}
func testPullCaseOnlyDirOrSymlink(t *testing.T, dir bool) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
ffs := f.Filesystem()
name := "foo"
if dir {
must(t, ffs.Mkdir(name, 0777))
} else {
must(t, ffs.CreateSymlink("target", name))
}
must(t, f.scanSubdirs(nil))
var cur protocol.FileInfo
hasCur := false
snap := dbSnapshot(t, m, f.ID)
defer snap.Release()
snap.WithHave(protocol.LocalDeviceID, func(i protocol.FileIntf) bool {
if hasCur {
t.Fatal("got more than one file")
}
cur = i.(protocol.FileInfo)
hasCur = true
return true
})
if !hasCur {
t.Fatal("file is missing")
}
scanChan := make(chan string, 1)
dbUpdateChan := make(chan dbUpdateJob, 1)
remote := *(&cur)
remote.Version = protocol.Vector{}.Update(device1.Short())
remote.Name = strings.ToUpper(cur.Name)
if dir {
f.handleDir(remote, snap, dbUpdateChan, scanChan)
} else {
f.handleSymlink(remote, snap, dbUpdateChan, scanChan)
}
select {
case <-dbUpdateChan: // boring case sensitive filesystem
return
case <-scanChan:
t.Error("no need to scan anything here")
default:
}
if errStr, ok := f.tempPullErrors[remote.Name]; !ok {
t.Error("missing error for", remote.Name)
} else if !strings.Contains(errStr, "differs from name") {
t.Error("unexpected error", errStr, "for", remote.Name)
}
}
func TestPullTempFileCaseConflict(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
copyChan := make(chan copyBlocksState, 1)
file := protocol.FileInfo{Name: "foo"}
confl := "Foo"
tempNameConfl := fs.TempName(confl)
if fd, err := f.fs.Create(tempNameConfl); err != nil {
t.Fatal(err)
} else {
if _, err := fd.Write([]byte("data")); err != nil {
t.Fatal(err)
}
fd.Close()
}
f.handleFile(file, f.fset.Snapshot(), copyChan)
cs := <-copyChan
if _, err := cs.tempFile(); err != nil {
t.Error(err)
}
}
func TestPullCaseOnlyRename(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
// tempNameConfl := fs.TempName(confl)
name := "foo"
if fd, err := f.fs.Create(name); err != nil {
t.Fatal(err)
} else {
if _, err := fd.Write([]byte("data")); err != nil {
t.Fatal(err)
}
fd.Close()
}
must(t, f.scanSubdirs(nil))
cur, ok := m.CurrentFolderFile(f.ID, name)
if !ok {
t.Fatal("file missing")
}
deleted := cur
deleted.SetDeleted(myID.Short())
confl := cur
confl.Name = "Foo"
confl.Version = confl.Version.Update(device1.Short())
dbUpdateChan := make(chan dbUpdateJob, 2)
scanChan := make(chan string, 2)
snap := f.fset.Snapshot()
defer snap.Release()
if err := f.renameFile(cur, deleted, confl, snap, dbUpdateChan, scanChan); err != nil {
t.Error(err)
}
}
func TestPullSymlinkOverExistingWindows(t *testing.T) {
if runtime.GOOS != "windows" {
t.Skip()
}
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
name := "foo"
if fd, err := f.fs.Create(name); err != nil {
t.Fatal(err)
} else {
if _, err := fd.Write([]byte("data")); err != nil {
t.Fatal(err)
}
fd.Close()
}
must(t, f.scanSubdirs(nil))
file, ok := m.CurrentFolderFile(f.ID, name)
if !ok {
t.Fatal("file missing")
}
m.Index(device1, f.ID, []protocol.FileInfo{{Name: name, Type: protocol.FileInfoTypeSymlink, Version: file.Version.Update(device1.Short())}})
scanChan := make(chan string)
changed := f.pullerIteration(scanChan)
if changed != 1 {
t.Error("Expected one change in pull, got", changed)
}
if file, ok := m.CurrentFolderFile(f.ID, name); !ok {
t.Error("symlink entry missing")
} else if !file.IsUnsupported() {
t.Error("symlink entry isn't marked as unsupported")
}
if _, err := f.fs.Lstat(name); err == nil {
t.Error("old file still exists on disk")
} else if !fs.IsNotExist(err) {
t.Error(err)
}
}
func TestPullDeleteCaseConflict(t *testing.T) {
m, f := setupSendReceiveFolder(t)
defer cleanupSRFolder(f, m)
name := "foo"
fi := protocol.FileInfo{Name: "Foo"}
dbUpdateChan := make(chan dbUpdateJob, 1)
scanChan := make(chan string)
if fd, err := f.fs.Create(name); err != nil {
t.Fatal(err)
} else {
if _, err := fd.Write([]byte("data")); err != nil {
t.Fatal(err)
}
fd.Close()
}
f.deleteFileWithCurrent(fi, protocol.FileInfo{}, false, dbUpdateChan, scanChan)
select {
case <-dbUpdateChan:
default:
t.Error("Missing db update for file")
}
snap := f.fset.Snapshot()
defer snap.Release()
f.deleteDir(fi, snap, dbUpdateChan, scanChan)
select {
case <-dbUpdateChan:
default:
t.Error("Missing db update for dir")
}
}
func cleanupSharedPullerState(s *sharedPullerState) {
s.mut.Lock()
defer s.mut.Unlock()
if s.writer == nil {
return
}
s.writer.mut.Lock()
s.writer.fd.Close()
s.writer.mut.Unlock()
}
func startCopier(f *sendReceiveFolder, pullChan chan<- pullBlockState, finisherChan chan<- *sharedPullerState) (chan copyBlocksState, sync.WaitGroup) {
copyChan := make(chan copyBlocksState)
wg := sync.NewWaitGroup()
wg.Add(1)
go func() {
f.copierRoutine(copyChan, pullChan, finisherChan)
wg.Done()
}()
return copyChan, wg
}