forked from lix-project/lix
1083 lines
33 KiB
C++
1083 lines
33 KiB
C++
#include "serialise.hh"
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#include "util.hh"
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#include "path-with-outputs.hh"
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#include "remote-fs-accessor.hh"
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#include "remote-store.hh"
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#include "worker-protocol.hh"
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#include "archive.hh"
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#include "affinity.hh"
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#include "globals.hh"
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#include "derivations.hh"
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#include "pool.hh"
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#include "finally.hh"
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#include "logging.hh"
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#include "callback.hh"
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#include "filetransfer.hh"
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#include <nlohmann/json.hpp>
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namespace nix {
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namespace worker_proto {
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std::string read(const Store & store, Source & from, Phantom<std::string> _)
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{
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return readString(from);
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}
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void write(const Store & store, Sink & out, const std::string & str)
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{
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out << str;
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}
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StorePath read(const Store & store, Source & from, Phantom<StorePath> _)
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{
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return store.parseStorePath(readString(from));
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}
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void write(const Store & store, Sink & out, const StorePath & storePath)
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{
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out << store.printStorePath(storePath);
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}
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ContentAddress read(const Store & store, Source & from, Phantom<ContentAddress> _)
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{
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return parseContentAddress(readString(from));
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}
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void write(const Store & store, Sink & out, const ContentAddress & ca)
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{
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out << renderContentAddress(ca);
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}
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DerivedPath read(const Store & store, Source & from, Phantom<DerivedPath> _)
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{
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auto s = readString(from);
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return DerivedPath::parse(store, s);
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}
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void write(const Store & store, Sink & out, const DerivedPath & req)
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{
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out << req.to_string(store);
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}
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Realisation read(const Store & store, Source & from, Phantom<Realisation> _)
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{
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std::string rawInput = readString(from);
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return Realisation::fromJSON(
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nlohmann::json::parse(rawInput),
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"remote-protocol"
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);
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}
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void write(const Store & store, Sink & out, const Realisation & realisation)
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{
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out << realisation.toJSON().dump();
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}
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DrvOutput read(const Store & store, Source & from, Phantom<DrvOutput> _)
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{
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return DrvOutput::parse(readString(from));
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}
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void write(const Store & store, Sink & out, const DrvOutput & drvOutput)
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{
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out << drvOutput.to_string();
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}
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std::optional<StorePath> read(const Store & store, Source & from, Phantom<std::optional<StorePath>> _)
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{
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auto s = readString(from);
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return s == "" ? std::optional<StorePath> {} : store.parseStorePath(s);
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}
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void write(const Store & store, Sink & out, const std::optional<StorePath> & storePathOpt)
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{
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out << (storePathOpt ? store.printStorePath(*storePathOpt) : "");
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}
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std::optional<ContentAddress> read(const Store & store, Source & from, Phantom<std::optional<ContentAddress>> _)
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{
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return parseContentAddressOpt(readString(from));
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}
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void write(const Store & store, Sink & out, const std::optional<ContentAddress> & caOpt)
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{
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out << (caOpt ? renderContentAddress(*caOpt) : "");
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}
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}
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/* TODO: Separate these store impls into different files, give them better names */
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RemoteStore::RemoteStore(const Params & params)
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: RemoteStoreConfig(params)
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, Store(params)
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, connections(make_ref<Pool<Connection>>(
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std::max(1, (int) maxConnections),
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[this]() {
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auto conn = openConnectionWrapper();
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try {
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initConnection(*conn);
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} catch (...) {
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failed = true;
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throw;
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}
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return conn;
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},
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[this](const ref<Connection> & r) {
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return
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r->to.good()
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&& r->from.good()
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&& std::chrono::duration_cast<std::chrono::seconds>(
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std::chrono::steady_clock::now() - r->startTime).count() < maxConnectionAge;
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}
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))
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{
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}
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ref<RemoteStore::Connection> RemoteStore::openConnectionWrapper()
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{
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if (failed)
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throw Error("opening a connection to remote store '%s' previously failed", getUri());
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try {
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return openConnection();
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} catch (...) {
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failed = true;
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throw;
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}
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}
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void RemoteStore::initConnection(Connection & conn)
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{
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/* Send the magic greeting, check for the reply. */
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try {
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conn.to << WORKER_MAGIC_1;
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conn.to.flush();
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StringSink saved;
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try {
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TeeSource tee(conn.from, saved);
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unsigned int magic = readInt(tee);
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if (magic != WORKER_MAGIC_2)
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throw Error("protocol mismatch");
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} catch (SerialisationError & e) {
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/* In case the other side is waiting for our input, close
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it. */
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conn.closeWrite();
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auto msg = conn.from.drain();
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throw Error("protocol mismatch, got '%s'", chomp(*saved.s + msg));
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}
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conn.from >> conn.daemonVersion;
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if (GET_PROTOCOL_MAJOR(conn.daemonVersion) != GET_PROTOCOL_MAJOR(PROTOCOL_VERSION))
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throw Error("Nix daemon protocol version not supported");
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if (GET_PROTOCOL_MINOR(conn.daemonVersion) < 10)
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throw Error("the Nix daemon version is too old");
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conn.to << PROTOCOL_VERSION;
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if (GET_PROTOCOL_MINOR(conn.daemonVersion) >= 14) {
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int cpu = sameMachine() && settings.lockCPU ? lockToCurrentCPU() : -1;
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if (cpu != -1)
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conn.to << 1 << cpu;
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else
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conn.to << 0;
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}
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if (GET_PROTOCOL_MINOR(conn.daemonVersion) >= 11)
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conn.to << false;
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auto ex = conn.processStderr();
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if (ex) std::rethrow_exception(ex);
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}
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catch (Error & e) {
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throw Error("cannot open connection to remote store '%s': %s", getUri(), e.what());
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}
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setOptions(conn);
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}
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void RemoteStore::setOptions(Connection & conn)
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{
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conn.to << wopSetOptions
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<< settings.keepFailed
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<< settings.keepGoing
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<< settings.tryFallback
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<< verbosity
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<< settings.maxBuildJobs
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<< settings.maxSilentTime
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<< true
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<< (settings.verboseBuild ? lvlError : lvlVomit)
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<< 0 // obsolete log type
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<< 0 /* obsolete print build trace */
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<< settings.buildCores
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<< settings.useSubstitutes;
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if (GET_PROTOCOL_MINOR(conn.daemonVersion) >= 12) {
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std::map<std::string, Config::SettingInfo> overrides;
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settings.getSettings(overrides, true); // libstore settings
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fileTransferSettings.getSettings(overrides, true);
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overrides.erase(settings.keepFailed.name);
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overrides.erase(settings.keepGoing.name);
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overrides.erase(settings.tryFallback.name);
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overrides.erase(settings.maxBuildJobs.name);
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overrides.erase(settings.maxSilentTime.name);
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overrides.erase(settings.buildCores.name);
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overrides.erase(settings.useSubstitutes.name);
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overrides.erase(loggerSettings.showTrace.name);
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overrides.erase(settings.experimentalFeatures.name);
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conn.to << overrides.size();
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for (auto & i : overrides)
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conn.to << i.first << i.second.value;
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}
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auto ex = conn.processStderr();
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if (ex) std::rethrow_exception(ex);
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}
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/* A wrapper around Pool<RemoteStore::Connection>::Handle that marks
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the connection as bad (causing it to be closed) if a non-daemon
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exception is thrown before the handle is closed. Such an exception
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causes a deviation from the expected protocol and therefore a
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desynchronization between the client and daemon. */
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struct ConnectionHandle
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{
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Pool<RemoteStore::Connection>::Handle handle;
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bool daemonException = false;
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ConnectionHandle(Pool<RemoteStore::Connection>::Handle && handle)
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: handle(std::move(handle))
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{ }
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ConnectionHandle(ConnectionHandle && h)
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: handle(std::move(h.handle))
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{ }
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~ConnectionHandle()
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{
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if (!daemonException && std::uncaught_exceptions()) {
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handle.markBad();
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debug("closing daemon connection because of an exception");
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}
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}
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RemoteStore::Connection * operator -> () { return &*handle; }
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void processStderr(Sink * sink = 0, Source * source = 0, bool flush = true)
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{
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auto ex = handle->processStderr(sink, source, flush);
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if (ex) {
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daemonException = true;
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std::rethrow_exception(ex);
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}
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}
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void withFramedSink(std::function<void(Sink & sink)> fun);
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};
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ConnectionHandle RemoteStore::getConnection()
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{
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return ConnectionHandle(connections->get());
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}
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void RemoteStore::setOptions()
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{
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setOptions(*(getConnection().handle));
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}
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bool RemoteStore::isValidPathUncached(const StorePath & path)
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{
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auto conn(getConnection());
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conn->to << wopIsValidPath << printStorePath(path);
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conn.processStderr();
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return readInt(conn->from);
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}
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StorePathSet RemoteStore::queryValidPaths(const StorePathSet & paths, SubstituteFlag maybeSubstitute)
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{
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auto conn(getConnection());
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if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 12) {
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StorePathSet res;
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for (auto & i : paths)
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if (isValidPath(i)) res.insert(i);
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return res;
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} else {
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conn->to << wopQueryValidPaths;
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worker_proto::write(*this, conn->to, paths);
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if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 27) {
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conn->to << (settings.buildersUseSubstitutes ? 1 : 0);
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}
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conn.processStderr();
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return worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
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}
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}
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StorePathSet RemoteStore::queryAllValidPaths()
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{
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auto conn(getConnection());
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conn->to << wopQueryAllValidPaths;
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conn.processStderr();
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return worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
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}
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StorePathSet RemoteStore::querySubstitutablePaths(const StorePathSet & paths)
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{
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auto conn(getConnection());
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if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 12) {
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StorePathSet res;
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for (auto & i : paths) {
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conn->to << wopHasSubstitutes << printStorePath(i);
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conn.processStderr();
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if (readInt(conn->from)) res.insert(i);
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}
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return res;
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} else {
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conn->to << wopQuerySubstitutablePaths;
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worker_proto::write(*this, conn->to, paths);
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conn.processStderr();
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return worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
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}
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}
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void RemoteStore::querySubstitutablePathInfos(const StorePathCAMap & pathsMap, SubstitutablePathInfos & infos)
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{
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if (pathsMap.empty()) return;
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auto conn(getConnection());
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if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 12) {
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for (auto & i : pathsMap) {
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SubstitutablePathInfo info;
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conn->to << wopQuerySubstitutablePathInfo << printStorePath(i.first);
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conn.processStderr();
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unsigned int reply = readInt(conn->from);
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if (reply == 0) continue;
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auto deriver = readString(conn->from);
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if (deriver != "")
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info.deriver = parseStorePath(deriver);
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info.references = worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
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info.downloadSize = readLongLong(conn->from);
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info.narSize = readLongLong(conn->from);
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infos.insert_or_assign(i.first, std::move(info));
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}
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} else {
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conn->to << wopQuerySubstitutablePathInfos;
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if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 22) {
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StorePathSet paths;
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for (auto & path : pathsMap)
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paths.insert(path.first);
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worker_proto::write(*this, conn->to, paths);
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} else
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worker_proto::write(*this, conn->to, pathsMap);
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conn.processStderr();
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size_t count = readNum<size_t>(conn->from);
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for (size_t n = 0; n < count; n++) {
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SubstitutablePathInfo & info(infos[parseStorePath(readString(conn->from))]);
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auto deriver = readString(conn->from);
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if (deriver != "")
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info.deriver = parseStorePath(deriver);
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info.references = worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
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info.downloadSize = readLongLong(conn->from);
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info.narSize = readLongLong(conn->from);
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}
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}
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}
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void RemoteStore::queryPathInfoUncached(const StorePath & path,
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Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept
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{
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try {
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std::shared_ptr<const ValidPathInfo> info;
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{
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auto conn(getConnection());
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conn->to << wopQueryPathInfo << printStorePath(path);
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try {
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conn.processStderr();
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} catch (Error & e) {
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// Ugly backwards compatibility hack.
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if (e.msg().find("is not valid") != std::string::npos)
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throw InvalidPath(e.info());
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throw;
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}
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if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 17) {
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bool valid; conn->from >> valid;
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if (!valid) throw InvalidPath("path '%s' is not valid", printStorePath(path));
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}
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info = std::make_shared<ValidPathInfo>(
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ValidPathInfo::read(conn->from, *this, GET_PROTOCOL_MINOR(conn->daemonVersion), StorePath{path}));
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}
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callback(std::move(info));
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} catch (...) { callback.rethrow(); }
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}
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void RemoteStore::queryReferrers(const StorePath & path,
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StorePathSet & referrers)
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{
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auto conn(getConnection());
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conn->to << wopQueryReferrers << printStorePath(path);
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conn.processStderr();
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for (auto & i : worker_proto::read(*this, conn->from, Phantom<StorePathSet> {}))
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referrers.insert(i);
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}
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StorePathSet RemoteStore::queryValidDerivers(const StorePath & path)
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{
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auto conn(getConnection());
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conn->to << wopQueryValidDerivers << printStorePath(path);
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conn.processStderr();
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return worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
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}
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StorePathSet RemoteStore::queryDerivationOutputs(const StorePath & path)
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{
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if (GET_PROTOCOL_MINOR(getProtocol()) >= 0x16) {
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return Store::queryDerivationOutputs(path);
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}
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auto conn(getConnection());
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conn->to << wopQueryDerivationOutputs << printStorePath(path);
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conn.processStderr();
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return worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
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}
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||
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||
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std::map<std::string, std::optional<StorePath>> RemoteStore::queryPartialDerivationOutputMap(const StorePath & path)
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||
{
|
||
if (GET_PROTOCOL_MINOR(getProtocol()) >= 0x16) {
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||
auto conn(getConnection());
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||
conn->to << wopQueryDerivationOutputMap << printStorePath(path);
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conn.processStderr();
|
||
return worker_proto::read(*this, conn->from, Phantom<std::map<std::string, std::optional<StorePath>>> {});
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} else {
|
||
// Fallback for old daemon versions.
|
||
// For floating-CA derivations (and their co-dependencies) this is an
|
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// under-approximation as it only returns the paths that can be inferred
|
||
// from the derivation itself (and not the ones that are known because
|
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// the have been built), but as old stores don't handle floating-CA
|
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// derivations this shouldn't matter
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||
auto derivation = readDerivation(path);
|
||
auto outputsWithOptPaths = derivation.outputsAndOptPaths(*this);
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||
std::map<std::string, std::optional<StorePath>> ret;
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||
for (auto & [outputName, outputAndPath] : outputsWithOptPaths) {
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||
ret.emplace(outputName, outputAndPath.second);
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||
}
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||
return ret;
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||
}
|
||
}
|
||
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||
std::optional<StorePath> RemoteStore::queryPathFromHashPart(const std::string & hashPart)
|
||
{
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||
auto conn(getConnection());
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||
conn->to << wopQueryPathFromHashPart << hashPart;
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||
conn.processStderr();
|
||
Path path = readString(conn->from);
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||
if (path.empty()) return {};
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||
return parseStorePath(path);
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||
}
|
||
|
||
|
||
ref<const ValidPathInfo> RemoteStore::addCAToStore(
|
||
Source & dump,
|
||
const string & name,
|
||
ContentAddressMethod caMethod,
|
||
const StorePathSet & references,
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||
RepairFlag repair)
|
||
{
|
||
std::optional<ConnectionHandle> conn_(getConnection());
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||
auto & conn = *conn_;
|
||
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 25) {
|
||
|
||
conn->to
|
||
<< wopAddToStore
|
||
<< name
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||
<< renderContentAddressMethod(caMethod);
|
||
worker_proto::write(*this, conn->to, references);
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||
conn->to << repair;
|
||
|
||
// The dump source may invoke the store, so we need to make some room.
|
||
connections->incCapacity();
|
||
{
|
||
Finally cleanup([&]() { connections->decCapacity(); });
|
||
conn.withFramedSink([&](Sink & sink) {
|
||
dump.drainInto(sink);
|
||
});
|
||
}
|
||
|
||
return make_ref<ValidPathInfo>(
|
||
ValidPathInfo::read(conn->from, *this, GET_PROTOCOL_MINOR(conn->daemonVersion)));
|
||
}
|
||
else {
|
||
if (repair) throw Error("repairing is not supported when building through the Nix daemon protocol < 1.25");
|
||
|
||
std::visit(overloaded {
|
||
[&](const TextHashMethod & thm) -> void {
|
||
std::string s = dump.drain();
|
||
conn->to << wopAddTextToStore << name << s;
|
||
worker_proto::write(*this, conn->to, references);
|
||
conn.processStderr();
|
||
},
|
||
[&](const FixedOutputHashMethod & fohm) -> void {
|
||
conn->to
|
||
<< wopAddToStore
|
||
<< name
|
||
<< ((fohm.hashType == htSHA256 && fohm.fileIngestionMethod == FileIngestionMethod::Recursive) ? 0 : 1) /* backwards compatibility hack */
|
||
<< (fohm.fileIngestionMethod == FileIngestionMethod::Recursive ? 1 : 0)
|
||
<< printHashType(fohm.hashType);
|
||
|
||
try {
|
||
conn->to.written = 0;
|
||
conn->to.warn = true;
|
||
connections->incCapacity();
|
||
{
|
||
Finally cleanup([&]() { connections->decCapacity(); });
|
||
if (fohm.fileIngestionMethod == FileIngestionMethod::Recursive) {
|
||
dump.drainInto(conn->to);
|
||
} else {
|
||
std::string contents = dump.drain();
|
||
dumpString(contents, conn->to);
|
||
}
|
||
}
|
||
conn->to.warn = false;
|
||
conn.processStderr();
|
||
} catch (SysError & e) {
|
||
/* Daemon closed while we were sending the path. Probably OOM
|
||
or I/O error. */
|
||
if (e.errNo == EPIPE)
|
||
try {
|
||
conn.processStderr();
|
||
} catch (EndOfFile & e) { }
|
||
throw;
|
||
}
|
||
|
||
}
|
||
}, caMethod);
|
||
auto path = parseStorePath(readString(conn->from));
|
||
// Release our connection to prevent a deadlock in queryPathInfo().
|
||
conn_.reset();
|
||
return queryPathInfo(path);
|
||
}
|
||
}
|
||
|
||
|
||
StorePath RemoteStore::addToStoreFromDump(Source & dump, const string & name,
|
||
FileIngestionMethod method, HashType hashType, RepairFlag repair, const StorePathSet & references)
|
||
{
|
||
return addCAToStore(dump, name, FixedOutputHashMethod{ .fileIngestionMethod = method, .hashType = hashType }, references, repair)->path;
|
||
}
|
||
|
||
|
||
void RemoteStore::addToStore(const ValidPathInfo & info, Source & source,
|
||
RepairFlag repair, CheckSigsFlag checkSigs)
|
||
{
|
||
auto conn(getConnection());
|
||
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 18) {
|
||
conn->to << wopImportPaths;
|
||
|
||
auto source2 = sinkToSource([&](Sink & sink) {
|
||
sink << 1 // == path follows
|
||
;
|
||
copyNAR(source, sink);
|
||
sink
|
||
<< exportMagic
|
||
<< printStorePath(info.path);
|
||
worker_proto::write(*this, sink, info.references);
|
||
sink
|
||
<< (info.deriver ? printStorePath(*info.deriver) : "")
|
||
<< 0 // == no legacy signature
|
||
<< 0 // == no path follows
|
||
;
|
||
});
|
||
|
||
conn.processStderr(0, source2.get());
|
||
|
||
auto importedPaths = worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
|
||
assert(importedPaths.size() <= 1);
|
||
}
|
||
|
||
else {
|
||
conn->to << wopAddToStoreNar
|
||
<< printStorePath(info.path)
|
||
<< (info.deriver ? printStorePath(*info.deriver) : "")
|
||
<< info.narHash.to_string(Base16, false);
|
||
worker_proto::write(*this, conn->to, info.references);
|
||
conn->to << info.registrationTime << info.narSize
|
||
<< info.ultimate << info.sigs << renderContentAddress(info.ca)
|
||
<< repair << !checkSigs;
|
||
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 23) {
|
||
conn.withFramedSink([&](Sink & sink) {
|
||
copyNAR(source, sink);
|
||
});
|
||
} else if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 21) {
|
||
conn.processStderr(0, &source);
|
||
} else {
|
||
copyNAR(source, conn->to);
|
||
conn.processStderr(0, nullptr);
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
void RemoteStore::addMultipleToStore(
|
||
Source & source,
|
||
RepairFlag repair,
|
||
CheckSigsFlag checkSigs)
|
||
{
|
||
if (GET_PROTOCOL_MINOR(getConnection()->daemonVersion) >= 32) {
|
||
auto conn(getConnection());
|
||
conn->to
|
||
<< wopAddMultipleToStore
|
||
<< repair
|
||
<< !checkSigs;
|
||
conn.withFramedSink([&](Sink & sink) {
|
||
source.drainInto(sink);
|
||
});
|
||
} else
|
||
Store::addMultipleToStore(source, repair, checkSigs);
|
||
}
|
||
|
||
|
||
StorePath RemoteStore::addTextToStore(const string & name, const string & s,
|
||
const StorePathSet & references, RepairFlag repair)
|
||
{
|
||
StringSource source(s);
|
||
return addCAToStore(source, name, TextHashMethod{}, references, repair)->path;
|
||
}
|
||
|
||
void RemoteStore::registerDrvOutput(const Realisation & info)
|
||
{
|
||
auto conn(getConnection());
|
||
conn->to << wopRegisterDrvOutput;
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 31) {
|
||
conn->to << info.id.to_string();
|
||
conn->to << std::string(info.outPath.to_string());
|
||
} else {
|
||
worker_proto::write(*this, conn->to, info);
|
||
}
|
||
conn.processStderr();
|
||
}
|
||
|
||
void RemoteStore::queryRealisationUncached(const DrvOutput & id,
|
||
Callback<std::shared_ptr<const Realisation>> callback) noexcept
|
||
{
|
||
auto conn(getConnection());
|
||
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 27) {
|
||
warn("The daemon is too old for content-addressed derivations. I’ll do what I can");
|
||
try {
|
||
callback(nullptr);
|
||
} catch (...) { return callback.rethrow(); }
|
||
}
|
||
|
||
conn->to << wopQueryRealisation;
|
||
conn->to << id.to_string();
|
||
conn.processStderr();
|
||
|
||
auto real = [&]() -> std::shared_ptr<const Realisation> {
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 31) {
|
||
auto outPaths = worker_proto::read(
|
||
*this, conn->from, Phantom<std::set<StorePath>> {});
|
||
if (outPaths.empty())
|
||
return nullptr;
|
||
return std::make_shared<const Realisation>(Realisation { .id = id, .outPath = *outPaths.begin() });
|
||
} else {
|
||
auto realisations = worker_proto::read(
|
||
*this, conn->from, Phantom<std::set<Realisation>> {});
|
||
if (realisations.empty())
|
||
return nullptr;
|
||
return std::make_shared<const Realisation>(*realisations.begin());
|
||
}
|
||
}();
|
||
|
||
try {
|
||
callback(std::shared_ptr<const Realisation>(real));
|
||
} catch (...) { return callback.rethrow(); }
|
||
}
|
||
|
||
static void writeDerivedPaths(RemoteStore & store, ConnectionHandle & conn, const std::vector<DerivedPath> & reqs)
|
||
{
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 30) {
|
||
worker_proto::write(store, conn->to, reqs);
|
||
} else {
|
||
Strings ss;
|
||
for (auto & p : reqs) {
|
||
auto sOrDrvPath = StorePathWithOutputs::tryFromDerivedPath(p);
|
||
std::visit(overloaded {
|
||
[&](const StorePathWithOutputs & s) {
|
||
ss.push_back(s.to_string(store));
|
||
},
|
||
[&](const StorePath & drvPath) {
|
||
throw Error("trying to request '%s', but daemon protocol %d.%d is too old (< 1.29) to request a derivation file",
|
||
store.printStorePath(drvPath),
|
||
GET_PROTOCOL_MAJOR(conn->daemonVersion),
|
||
GET_PROTOCOL_MINOR(conn->daemonVersion));
|
||
},
|
||
}, sOrDrvPath);
|
||
}
|
||
conn->to << ss;
|
||
}
|
||
}
|
||
|
||
void RemoteStore::buildPaths(const std::vector<DerivedPath> & drvPaths, BuildMode buildMode, std::shared_ptr<Store> evalStore)
|
||
{
|
||
if (evalStore && evalStore.get() != this) {
|
||
/* The remote doesn't have a way to access evalStore, so copy
|
||
the .drvs. */
|
||
RealisedPath::Set drvPaths2;
|
||
for (auto & i : drvPaths)
|
||
if (auto p = std::get_if<DerivedPath::Built>(&i))
|
||
drvPaths2.insert(p->drvPath);
|
||
copyClosure(*evalStore, *this, drvPaths2);
|
||
}
|
||
|
||
auto conn(getConnection());
|
||
conn->to << wopBuildPaths;
|
||
assert(GET_PROTOCOL_MINOR(conn->daemonVersion) >= 13);
|
||
writeDerivedPaths(*this, conn, drvPaths);
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 15)
|
||
conn->to << buildMode;
|
||
else
|
||
/* Old daemons did not take a 'buildMode' parameter, so we
|
||
need to validate it here on the client side. */
|
||
if (buildMode != bmNormal)
|
||
throw Error("repairing or checking is not supported when building through the Nix daemon");
|
||
conn.processStderr();
|
||
readInt(conn->from);
|
||
}
|
||
|
||
|
||
BuildResult RemoteStore::buildDerivation(const StorePath & drvPath, const BasicDerivation & drv,
|
||
BuildMode buildMode)
|
||
{
|
||
auto conn(getConnection());
|
||
conn->to << wopBuildDerivation << printStorePath(drvPath);
|
||
writeDerivation(conn->to, *this, drv);
|
||
conn->to << buildMode;
|
||
conn.processStderr();
|
||
BuildResult res;
|
||
res.status = (BuildResult::Status) readInt(conn->from);
|
||
conn->from >> res.errorMsg;
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 29) {
|
||
conn->from >> res.timesBuilt >> res.isNonDeterministic >> res.startTime >> res.stopTime;
|
||
}
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 28) {
|
||
auto builtOutputs = worker_proto::read(*this, conn->from, Phantom<DrvOutputs> {});
|
||
res.builtOutputs = builtOutputs;
|
||
}
|
||
return res;
|
||
}
|
||
|
||
|
||
void RemoteStore::ensurePath(const StorePath & path)
|
||
{
|
||
auto conn(getConnection());
|
||
conn->to << wopEnsurePath << printStorePath(path);
|
||
conn.processStderr();
|
||
readInt(conn->from);
|
||
}
|
||
|
||
|
||
void RemoteStore::addTempRoot(const StorePath & path)
|
||
{
|
||
auto conn(getConnection());
|
||
conn->to << wopAddTempRoot << printStorePath(path);
|
||
conn.processStderr();
|
||
readInt(conn->from);
|
||
}
|
||
|
||
|
||
void RemoteStore::addIndirectRoot(const Path & path)
|
||
{
|
||
auto conn(getConnection());
|
||
conn->to << wopAddIndirectRoot << path;
|
||
conn.processStderr();
|
||
readInt(conn->from);
|
||
}
|
||
|
||
|
||
Roots RemoteStore::findRoots(bool censor)
|
||
{
|
||
auto conn(getConnection());
|
||
conn->to << wopFindRoots;
|
||
conn.processStderr();
|
||
size_t count = readNum<size_t>(conn->from);
|
||
Roots result;
|
||
while (count--) {
|
||
Path link = readString(conn->from);
|
||
auto target = parseStorePath(readString(conn->from));
|
||
result[std::move(target)].emplace(link);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
|
||
void RemoteStore::collectGarbage(const GCOptions & options, GCResults & results)
|
||
{
|
||
auto conn(getConnection());
|
||
|
||
conn->to
|
||
<< wopCollectGarbage << options.action;
|
||
worker_proto::write(*this, conn->to, options.pathsToDelete);
|
||
conn->to << options.ignoreLiveness
|
||
<< options.maxFreed
|
||
/* removed options */
|
||
<< 0 << 0 << 0;
|
||
|
||
conn.processStderr();
|
||
|
||
results.paths = readStrings<PathSet>(conn->from);
|
||
results.bytesFreed = readLongLong(conn->from);
|
||
readLongLong(conn->from); // obsolete
|
||
|
||
{
|
||
auto state_(Store::state.lock());
|
||
state_->pathInfoCache.clear();
|
||
}
|
||
}
|
||
|
||
|
||
void RemoteStore::optimiseStore()
|
||
{
|
||
auto conn(getConnection());
|
||
conn->to << wopOptimiseStore;
|
||
conn.processStderr();
|
||
readInt(conn->from);
|
||
}
|
||
|
||
|
||
bool RemoteStore::verifyStore(bool checkContents, RepairFlag repair)
|
||
{
|
||
auto conn(getConnection());
|
||
conn->to << wopVerifyStore << checkContents << repair;
|
||
conn.processStderr();
|
||
return readInt(conn->from);
|
||
}
|
||
|
||
|
||
void RemoteStore::addSignatures(const StorePath & storePath, const StringSet & sigs)
|
||
{
|
||
auto conn(getConnection());
|
||
conn->to << wopAddSignatures << printStorePath(storePath) << sigs;
|
||
conn.processStderr();
|
||
readInt(conn->from);
|
||
}
|
||
|
||
|
||
void RemoteStore::queryMissing(const std::vector<DerivedPath> & targets,
|
||
StorePathSet & willBuild, StorePathSet & willSubstitute, StorePathSet & unknown,
|
||
uint64_t & downloadSize, uint64_t & narSize)
|
||
{
|
||
{
|
||
auto conn(getConnection());
|
||
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 19)
|
||
// Don't hold the connection handle in the fallback case
|
||
// to prevent a deadlock.
|
||
goto fallback;
|
||
conn->to << wopQueryMissing;
|
||
writeDerivedPaths(*this, conn, targets);
|
||
conn.processStderr();
|
||
willBuild = worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
|
||
willSubstitute = worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
|
||
unknown = worker_proto::read(*this, conn->from, Phantom<StorePathSet> {});
|
||
conn->from >> downloadSize >> narSize;
|
||
return;
|
||
}
|
||
|
||
fallback:
|
||
return Store::queryMissing(targets, willBuild, willSubstitute,
|
||
unknown, downloadSize, narSize);
|
||
}
|
||
|
||
|
||
void RemoteStore::connect()
|
||
{
|
||
auto conn(getConnection());
|
||
}
|
||
|
||
|
||
unsigned int RemoteStore::getProtocol()
|
||
{
|
||
auto conn(connections->get());
|
||
return conn->daemonVersion;
|
||
}
|
||
|
||
|
||
void RemoteStore::flushBadConnections()
|
||
{
|
||
connections->flushBad();
|
||
}
|
||
|
||
|
||
RemoteStore::Connection::~Connection()
|
||
{
|
||
try {
|
||
to.flush();
|
||
} catch (...) {
|
||
ignoreException();
|
||
}
|
||
}
|
||
|
||
void RemoteStore::narFromPath(const StorePath & path, Sink & sink)
|
||
{
|
||
auto conn(connections->get());
|
||
conn->to << wopNarFromPath << printStorePath(path);
|
||
conn->processStderr();
|
||
copyNAR(conn->from, sink);
|
||
}
|
||
|
||
ref<FSAccessor> RemoteStore::getFSAccessor()
|
||
{
|
||
return make_ref<RemoteFSAccessor>(ref<Store>(shared_from_this()));
|
||
}
|
||
|
||
static Logger::Fields readFields(Source & from)
|
||
{
|
||
Logger::Fields fields;
|
||
size_t size = readInt(from);
|
||
for (size_t n = 0; n < size; n++) {
|
||
auto type = (decltype(Logger::Field::type)) readInt(from);
|
||
if (type == Logger::Field::tInt)
|
||
fields.push_back(readNum<uint64_t>(from));
|
||
else if (type == Logger::Field::tString)
|
||
fields.push_back(readString(from));
|
||
else
|
||
throw Error("got unsupported field type %x from Nix daemon", (int) type);
|
||
}
|
||
return fields;
|
||
}
|
||
|
||
|
||
std::exception_ptr RemoteStore::Connection::processStderr(Sink * sink, Source * source, bool flush)
|
||
{
|
||
if (flush)
|
||
to.flush();
|
||
|
||
while (true) {
|
||
|
||
auto msg = readNum<uint64_t>(from);
|
||
|
||
if (msg == STDERR_WRITE) {
|
||
string s = readString(from);
|
||
if (!sink) throw Error("no sink");
|
||
(*sink)(s);
|
||
}
|
||
|
||
else if (msg == STDERR_READ) {
|
||
if (!source) throw Error("no source");
|
||
size_t len = readNum<size_t>(from);
|
||
auto buf = std::make_unique<char[]>(len);
|
||
writeString({(const char *) buf.get(), source->read(buf.get(), len)}, to);
|
||
to.flush();
|
||
}
|
||
|
||
else if (msg == STDERR_ERROR) {
|
||
if (GET_PROTOCOL_MINOR(daemonVersion) >= 26) {
|
||
return std::make_exception_ptr(readError(from));
|
||
} else {
|
||
string error = readString(from);
|
||
unsigned int status = readInt(from);
|
||
return std::make_exception_ptr(Error(status, error));
|
||
}
|
||
}
|
||
|
||
else if (msg == STDERR_NEXT)
|
||
printError(chomp(readString(from)));
|
||
|
||
else if (msg == STDERR_START_ACTIVITY) {
|
||
auto act = readNum<ActivityId>(from);
|
||
auto lvl = (Verbosity) readInt(from);
|
||
auto type = (ActivityType) readInt(from);
|
||
auto s = readString(from);
|
||
auto fields = readFields(from);
|
||
auto parent = readNum<ActivityId>(from);
|
||
logger->startActivity(act, lvl, type, s, fields, parent);
|
||
}
|
||
|
||
else if (msg == STDERR_STOP_ACTIVITY) {
|
||
auto act = readNum<ActivityId>(from);
|
||
logger->stopActivity(act);
|
||
}
|
||
|
||
else if (msg == STDERR_RESULT) {
|
||
auto act = readNum<ActivityId>(from);
|
||
auto type = (ResultType) readInt(from);
|
||
auto fields = readFields(from);
|
||
logger->result(act, type, fields);
|
||
}
|
||
|
||
else if (msg == STDERR_LAST)
|
||
break;
|
||
|
||
else
|
||
throw Error("got unknown message type %x from Nix daemon", msg);
|
||
}
|
||
|
||
return nullptr;
|
||
}
|
||
|
||
void ConnectionHandle::withFramedSink(std::function<void(Sink & sink)> fun)
|
||
{
|
||
(*this)->to.flush();
|
||
|
||
std::exception_ptr ex;
|
||
|
||
/* Handle log messages / exceptions from the remote on a separate
|
||
thread. */
|
||
std::thread stderrThread([&]()
|
||
{
|
||
try {
|
||
processStderr(nullptr, nullptr, false);
|
||
} catch (...) {
|
||
ex = std::current_exception();
|
||
}
|
||
});
|
||
|
||
Finally joinStderrThread([&]()
|
||
{
|
||
if (stderrThread.joinable()) {
|
||
stderrThread.join();
|
||
if (ex) {
|
||
try {
|
||
std::rethrow_exception(ex);
|
||
} catch (...) {
|
||
ignoreException();
|
||
}
|
||
}
|
||
}
|
||
});
|
||
|
||
{
|
||
FramedSink sink((*this)->to, ex);
|
||
fun(sink);
|
||
sink.flush();
|
||
}
|
||
|
||
stderrThread.join();
|
||
if (ex)
|
||
std::rethrow_exception(ex);
|
||
}
|
||
|
||
}
|