lmdb-safe/examples/typed.cc

#include "../lmdb-boost-serialization.hh"
#include "../lmdb-typed.hh"

#include <c++utilities/application/global.h>

#include <arpa/inet.h>

#include <iostream>
#include <string>

using namespace std;
using namespace LMDBSafe;

struct DNSResourceRecord {
    std::string qname; // index
    std::uint16_t qtype{ 0 };
    std::uint32_t domain_id{ 0 }; // index
    std::string content;
    std::uint32_t ttl{ 0 };
    std::string ordername; // index
    bool auth{ true };
};

struct DomainInfo {
    std::string qname;
    std::string master;
};

template <class Archive> void serialize(Archive &ar, DomainInfo &g, const unsigned int version)
{
    CPP_UTILITIES_UNUSED(version)
    ar &g.qname &g.master;
}

template <class Archive> void serialize(Archive &ar, DNSResourceRecord &g, const unsigned int version)
{
    CPP_UTILITIES_UNUSED(version)
    ar &g.qtype;
    ar &g.qname;
    ar &g.content;
    ar &g.ttl;
    ar &g.domain_id;
    ar &g.ordername;
    ar &g.auth;
}

struct compound {
    std::string operator()(const DNSResourceRecord &rr)
    {
        std::string ret;
        std::uint32_t id = htonl(rr.domain_id);
        ret.assign(reinterpret_cast<char *>(&id), 4);
        ret.append(rr.ordername);
        return ret;
    }
};

int main()
{
    TypedDBI<DNSResourceRecord, index_on<DNSResourceRecord, std::string, &DNSResourceRecord::qname>,
        index_on<DNSResourceRecord, std::uint32_t, &DNSResourceRecord::domain_id>, index_on_function<DNSResourceRecord, std::string, compound>>
        tdbi(getMDBEnv("./typed.lmdb", MDB_NOSUBDIR, 0600), "records");

    TypedDBI<DomainInfo, index_on<DomainInfo, string, &DomainInfo::qname>> tdomains(tdbi.getEnv(), "domains");

    {
        auto rotxn = tdbi.getROTransaction();
        DNSResourceRecord rr0;
        if (rotxn.get(2, rr0)) {
            cout << "id 2, found " << rr0.qname << endl;
        } else {
            cout << "Did not find id 2" << endl;
        }
        cout << "Iterating over name 'powerdns.com': " << endl;
        auto range = rotxn.equal_range<0>("powerdns.com");
        for (auto iter = std::move(range.first); iter != range.second; ++iter) {
            cout << iter->qname << " " << iter->qtype << " " << iter->content << endl;
        }
        cout << "Currently have " << rotxn.size() << " entries" << endl;
        cout << " " << rotxn.size<0>() << " " << rotxn.size<1>() << " " << rotxn.size<2>() << endl;
        cout << " " << rotxn.cardinality<0>() << endl;
        cout << " " << rotxn.cardinality<1>() << endl;
        cout << " " << rotxn.cardinality<2>() << endl;
    }

    auto txn = tdbi.getRWTransaction();
    auto domtxn = tdomains.getRWTransaction(txn.getTransactionHandle());
    cout << domtxn.size() << " domains in table" << endl;
    txn.clear();
    domtxn.clear();

    cout << "Currently have " << txn.size() << " entries after clear" << endl;
    cout << " " << txn.size<0>() << " " << txn.size<1>() << " " << txn.size<2>() << endl;
    cout << " " << txn.cardinality<0>() << endl;
    cout << " " << txn.cardinality<1>() << endl;
    cout << " " << txn.cardinality<2>() << endl;

    DomainInfo di{ "powerdns.com", "ns1.powerdns.com" };
    domtxn.put(di, 11);

    DNSResourceRecord rr;
    rr.domain_id = 11;
    rr.qtype = 5;
    rr.ttl = 3600;
    rr.qname = "www.powerdns.com";
    rr.ordername = "www";
    rr.content = "powerdns.com";

    auto id = txn.put(rr);
    cout << "Puted as id " << id << endl;

    rr.qname = "powerdns.com";
    rr.qtype = 1;
    rr.ordername = "";
    rr.content = "1.2.3.4";

    id = txn.put(rr);
    cout << "Puted as id " << id << endl;

    rr.qtype = 2;
    rr.content = "ns1.powerdns.com";
    rr.ordername = "ns1";
    id = txn.put(rr);
    cout << "Puted as id " << id << endl;

    rr.content = "ns2.powerdns.com";
    rr.ordername = "ns2";
    id = txn.put(rr);
    cout << "Puted as id " << id << endl;

    DomainInfo di2{ "ds9a.nl", "ns1.powerdns.com" };
    domtxn.put(di, 10);

    rr.qname = "www.ds9a.nl";
    rr.domain_id = 10;
    rr.content = "1.2.3.4";
    rr.qtype = 1;
    rr.ordername = "www";
    txn.put(rr);

    rr.qname = "ds9a.nl";
    rr.content = "ns1.ds9a.nl bert.ds9a.nl 1";
    rr.qtype = 6;
    rr.ordername = "";
    txn.put(rr);

    rr.qname = "ds9a.nl";
    rr.content = "25 ns1.ds9a.nl";
    rr.qtype = 15;
    txn.put(rr);

    rr.qname = "ns1.ds9a.nl";
    rr.content = "1.2.3.4";
    rr.qtype = 1;
    rr.ordername = "ns1";
    txn.put(rr);
    rr.qname = "ns1.ds9a.nl";
    rr.content = "::1";
    rr.qtype = 26;
    txn.put(rr);

    rr.qname = "ns2.ds9a.nl";
    rr.content = "1.2.3.4";
    rr.qtype = 1;
    rr.ordername = "ns2";
    txn.put(rr);
    rr.qname = "ns2.ds9a.nl";
    rr.content = "::1";
    rr.qtype = 26;
    txn.put(rr);

    DNSResourceRecord rr2;
    id = txn.get<0>("www.powerdns.com", rr2);

    cout << "Retrieved id " << id << ", content: " << rr2.content << endl;

    id = txn.get<0>("powerdns.com", rr2);

    cout << "Retrieved id " << id << ", content: " << rr2.content << endl;

    DNSResourceRecord rr3;
    id = txn.get<0>("powerdns.com", rr3);
    cout << id << endl;

    cout << "Going to iterate over everything, ordered by name!" << endl;
    for (auto iter = txn.begin<0>(); iter != txn.end(); ++iter) {
        cout << iter.getID() << ": " << iter->qname << " " << iter->qtype << " " << iter->content << endl;
    }

    cout << "Going to iterate over everything, ordered by domain_id!" << endl;
    for (auto iter = txn.begin<1>(); iter != txn.end(); ++iter) {
        cout << iter.getID() << ": " << iter->qname << " " << iter->qtype << " " << iter->content << endl;
    }

    cout << "Going to iterate over everything, ordered by id!" << endl;
    for (auto iter = txn.begin(); iter != txn.end(); ++iter) {
        cout << iter.getID() << ": " << iter->qname << " " << iter->qtype << " " << iter->content << endl;
    }

    cout << "Going to iterate over everything, ordered by compound index!" << endl;
    for (auto iter = txn.begin<2>(); iter != txn.end(); ++iter) {
        cout << iter.getID() << ": " << iter->qname << " " << iter->qtype << " " << iter->content << " # " << iter->ordername << endl;
    }

    compound c;
    rr3.ordername = "vvv";
    rr3.domain_id = 10;
    auto iter = txn.lower_bound<2>(c(rr3));
    cout << "Found for '" << rr3.ordername << "' using compound index: " << iter->qname << " # '" << iter->ordername << "'" << endl;
    for (int n = 0; n < 4; ++n) {
        --iter;
        cout << "Found PREV using compound index: " << iter->qname << " # '" << iter->ordername << "'" << endl;
    }

    cout << "Going to iterate over the name powerdns.com!" << endl;

    for (auto iter2 = txn.equal_range<0>("powerdns.com"); iter2.first != iter2.second; ++iter2.first) {
        cout << iter2.first.getID() << ": " << iter2.first->qname << " " << iter2.first->qtype << " " << iter2.first->content << endl;
    }
    cout << "Done iterating" << endl;

    cout << "Going to iterate over the zone ds9a.nl!" << endl;

    for (auto iter2 = txn.find<1>(10); iter2 != txn.end(); ++iter2) {
        cout << iter2.getID() << ": " << iter2->qname << " " << iter2->qtype << " " << iter2->content << endl;
    }
    cout << "Done iterating" << endl;

    DNSResourceRecord change;
    txn.get(1, change);
    cout << "1.auth: " << change.auth << endl;
    txn.modify(1, [](DNSResourceRecord &record) { record.auth = false; });
    txn.get(1, change);
    cout << "1.auth: " << change.auth << endl;
    txn.del(1);

    //  DNSResourceRecord rr4;
    //  id = txn.get3("ns1", rr4);
    //  cout<<"Found "<<id<<": " << rr4.content <<endl;

    txn.commit();
}