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Create worker_proto::{Read,Write}Conn

Browse source 
Pass this around instead of `Source &` and `Sink &` directly. This will
give us something to put the protocol version on once the time comes.

To do this ergonomically, we need to expose `RemoteStore::Connection`,
so do that too. Give it some more API docs while we are at it.
This commit is contained in:
John Ericson 2023-04-17 13:40:46 -04:00
parent 4e8b495ad7
commit 9f69b7dee9
16 changed files with 348 additions and 184 deletions
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6
src/libstore/build/derivation-goal.cc
View file

@ -1151,9 +1151,11 @@ HookReply DerivationGoal::tryBuildHook()
throw;
}
WorkerProto::WriteConn conn { hook->sink };
/* Tell the hook all the inputs that have to be copied to the
remote system. */
WorkerProto::write(worker.store, hook->sink, inputPaths);
WorkerProto::write(worker.store, conn, inputPaths);
/* Tell the hooks the missing outputs that have to be copied back
from the remote system. */
@ -1164,7 +1166,7 @@ HookReply DerivationGoal::tryBuildHook()
if (buildMode != bmCheck && status.known && status.known->isValid()) continue;
missingOutputs.insert(outputName);
}
WorkerProto::write(worker.store, hook->sink, missingOutputs);
WorkerProto::write(worker.store, conn, missingOutputs);
}
hook->sink = FdSink();

64
src/libstore/daemon.cc
View file

@ -260,13 +260,13 @@ struct ClientSettings
}
};
static std::vector<DerivedPath> readDerivedPaths(Store & store, unsigned int clientVersion, Source & from)
static std::vector<DerivedPath> readDerivedPaths(Store & store, unsigned int clientVersion, WorkerProto::ReadConn conn)
{
std::vector<DerivedPath> reqs;
if (GET_PROTOCOL_MINOR(clientVersion) >= 30) {
reqs = WorkerProto::Serialise<std::vector<DerivedPath>>::read(store, from);
reqs = WorkerProto::Serialise<std::vector<DerivedPath>>::read(store, conn);
} else {
for (auto & s : readStrings<Strings>(from))
for (auto & s : readStrings<Strings>(conn.from))
reqs.push_back(parsePathWithOutputs(store, s).toDerivedPath());
}
return reqs;
@ -276,6 +276,9 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
TrustedFlag trusted, RecursiveFlag recursive, unsigned int clientVersion,
Source & from, BufferedSink & to, WorkerProto::Op op)
{
WorkerProto::ReadConn rconn { .from = from };
WorkerProto::WriteConn wconn { .to = to };
switch (op) {
case WorkerProto::Op::IsValidPath: {
@ -288,7 +291,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
}
case WorkerProto::Op::QueryValidPaths: {
auto paths = WorkerProto::Serialise<StorePathSet>::read(*store, from);
auto paths = WorkerProto::Serialise<StorePathSet>::read(*store, rconn);
SubstituteFlag substitute = NoSubstitute;
if (GET_PROTOCOL_MINOR(clientVersion) >= 27) {
@ -301,7 +304,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
}
auto res = store->queryValidPaths(paths, substitute);
logger->stopWork();
WorkerProto::write(*store, to, res);
WorkerProto::write(*store, wconn, res);
break;
}
@ -317,11 +320,11 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
}
case WorkerProto::Op::QuerySubstitutablePaths: {
auto paths = WorkerProto::Serialise<StorePathSet>::read(*store, from);
auto paths = WorkerProto::Serialise<StorePathSet>::read(*store, rconn);
logger->startWork();
auto res = store->querySubstitutablePaths(paths);
logger->stopWork();
WorkerProto::write(*store, to, res);
WorkerProto::write(*store, wconn, res);
break;
}
@ -350,7 +353,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
paths = store->queryValidDerivers(path);
else paths = store->queryDerivationOutputs(path);
logger->stopWork();
WorkerProto::write(*store, to, paths);
WorkerProto::write(*store, wconn, paths);
break;
}
@ -368,7 +371,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
logger->startWork();
auto outputs = store->queryPartialDerivationOutputMap(path);
logger->stopWork();
WorkerProto::write(*store, to, outputs);
WorkerProto::write(*store, wconn, outputs);
break;
}
@ -394,7 +397,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
if (GET_PROTOCOL_MINOR(clientVersion) >= 25) {
auto name = readString(from);
auto camStr = readString(from);
auto refs = WorkerProto::Serialise<StorePathSet>::read(*store, from);
auto refs = WorkerProto::Serialise<StorePathSet>::read(*store, rconn);
bool repairBool;
from >> repairBool;
auto repair = RepairFlag{repairBool};
@ -496,7 +499,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
case WorkerProto::Op::AddTextToStore: {
std::string suffix = readString(from);
std::string s = readString(from);
auto refs = WorkerProto::Serialise<StorePathSet>::read(*store, from);
auto refs = WorkerProto::Serialise<StorePathSet>::read(*store, rconn);
logger->startWork();
auto path = store->addTextToStore(suffix, s, refs, NoRepair);
logger->stopWork();
@ -528,7 +531,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
}
case WorkerProto::Op::BuildPaths: {
auto drvs = readDerivedPaths(*store, clientVersion, from);
auto drvs = readDerivedPaths(*store, clientVersion, rconn);
BuildMode mode = bmNormal;
if (GET_PROTOCOL_MINOR(clientVersion) >= 15) {
mode = (BuildMode) readInt(from);
@ -553,7 +556,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
}
case WorkerProto::Op::BuildPathsWithResults: {
auto drvs = readDerivedPaths(*store, clientVersion, from);
auto drvs = readDerivedPaths(*store, clientVersion, rconn);
BuildMode mode = bmNormal;
mode = (BuildMode) readInt(from);
@ -568,7 +571,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
auto results = store->buildPathsWithResults(drvs, mode);
logger->stopWork();
WorkerProto::write(*store, to, results);
WorkerProto::write(*store, wconn, results);
break;
}
@ -645,7 +648,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
DrvOutputs builtOutputs;
for (auto & [output, realisation] : res.builtOutputs)
builtOutputs.insert_or_assign(realisation.id, realisation);
WorkerProto::write(*store, to, builtOutputs);
WorkerProto::write(*store, wconn, builtOutputs);
}
break;
}
@ -710,7 +713,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
case WorkerProto::Op::CollectGarbage: {
GCOptions options;
options.action = (GCOptions::GCAction) readInt(from);
options.pathsToDelete = WorkerProto::Serialise<StorePathSet>::read(*store, from);
options.pathsToDelete = WorkerProto::Serialise<StorePathSet>::read(*store, rconn);
from >> options.ignoreLiveness >> options.maxFreed;
// obsolete fields
readInt(from);
@ -780,7 +783,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
else {
to << 1
<< (i->second.deriver ? store->printStorePath(*i->second.deriver) : "");
WorkerProto::write(*store, to, i->second.references);
WorkerProto::write(*store, wconn, i->second.references);
to << i->second.downloadSize
<< i->second.narSize;
}
@ -791,11 +794,11 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
SubstitutablePathInfos infos;
StorePathCAMap pathsMap = {};
if (GET_PROTOCOL_MINOR(clientVersion) < 22) {
auto paths = WorkerProto::Serialise<StorePathSet>::read(*store, from);
auto paths = WorkerProto::Serialise<StorePathSet>::read(*store, rconn);
for (auto & path : paths)
pathsMap.emplace(path, std::nullopt);
} else
pathsMap = WorkerProto::Serialise<StorePathCAMap>::read(*store, from);
pathsMap = WorkerProto::Serialise<StorePathCAMap>::read(*store, rconn);
logger->startWork();
store->querySubstitutablePathInfos(pathsMap, infos);
logger->stopWork();
@ -803,7 +806,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
for (auto & i : infos) {
to << store->printStorePath(i.first)
<< (i.second.deriver ? store->printStorePath(*i.second.deriver) : "");
WorkerProto::write(*store, to, i.second.references);
WorkerProto::write(*store, wconn, i.second.references);
to << i.second.downloadSize << i.second.narSize;
}
break;
@ -813,7 +816,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
logger->startWork();
auto paths = store->queryAllValidPaths();
logger->stopWork();
WorkerProto::write(*store, to, paths);
WorkerProto::write(*store, wconn, paths);
break;
}
@ -885,7 +888,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
ValidPathInfo info { path, narHash };
if (deriver != "")
info.deriver = store->parseStorePath(deriver);
info.references = WorkerProto::Serialise<StorePathSet>::read(*store, from);
info.references = WorkerProto::Serialise<StorePathSet>::read(*store, rconn);
from >> info.registrationTime >> info.narSize >> info.ultimate;
info.sigs = readStrings<StringSet>(from);
info.ca = ContentAddress::parseOpt(readString(from));
@ -930,15 +933,15 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
}
case WorkerProto::Op::QueryMissing: {
auto targets = readDerivedPaths(*store, clientVersion, from);
auto targets = readDerivedPaths(*store, clientVersion, rconn);
logger->startWork();
StorePathSet willBuild, willSubstitute, unknown;
uint64_t downloadSize, narSize;
store->queryMissing(targets, willBuild, willSubstitute, unknown, downloadSize, narSize);
logger->stopWork();
WorkerProto::write(*store, to, willBuild);
WorkerProto::write(*store, to, willSubstitute);
WorkerProto::write(*store, to, unknown);
WorkerProto::write(*store, wconn, willBuild);
WorkerProto::write(*store, wconn, willSubstitute);
WorkerProto::write(*store, wconn, unknown);
to << downloadSize << narSize;
break;
}
@ -951,7 +954,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
store->registerDrvOutput(Realisation{
.id = outputId, .outPath = outputPath});
} else {
auto realisation = WorkerProto::Serialise<Realisation>::read(*store, from);
auto realisation = WorkerProto::Serialise<Realisation>::read(*store, rconn);
store->registerDrvOutput(realisation);
}
logger->stopWork();
@ -966,11 +969,11 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
if (GET_PROTOCOL_MINOR(clientVersion) < 31) {
std::set<StorePath> outPaths;
if (info) outPaths.insert(info->outPath);
WorkerProto::write(*store, to, outPaths);
WorkerProto::write(*store, wconn, outPaths);
} else {
std::set<Realisation> realisations;
if (info) realisations.insert(*info);
WorkerProto::write(*store, to, realisations);
WorkerProto::write(*store, wconn, realisations);
}
break;
}
@ -1050,7 +1053,8 @@ void processConnection(
auto temp = trusted
? store->isTrustedClient()
: std::optional { NotTrusted };
WorkerProto::write(*store, to, temp);
WorkerProto::WriteConn wconn { .to = to };
WorkerProto::write(*store, wconn, temp);
}
/* Send startup error messages to the client. */

7
src/libstore/derivations.cc
View file

@ -750,7 +750,8 @@ Source & readDerivation(Source & in, const Store & store, BasicDerivation & drv,
drv.outputs.emplace(std::move(name), std::move(output));
}
drv.inputSrcs = WorkerProto::Serialise<StorePathSet>::read(store, in);
drv.inputSrcs = WorkerProto::Serialise<StorePathSet>::read(store,
WorkerProto::ReadConn { .from = in });
in >> drv.platform >> drv.builder;
drv.args = readStrings<Strings>(in);
@ -798,7 +799,9 @@ void writeDerivation(Sink & out, const Store & store, const BasicDerivation & dr
},
}, i.second.raw());
}
WorkerProto::write(store, out, drv.inputSrcs);
WorkerProto::write(store,
WorkerProto::WriteConn { .to = out },
drv.inputSrcs);
out << drv.platform << drv.builder << drv.args;
out << drv.env.size();
for (auto & i : drv.env)

7
src/libstore/export-import.cc
View file

@ -46,7 +46,9 @@ void Store::exportPath(const StorePath & path, Sink & sink)
teeSink
<< exportMagic
<< printStorePath(path);
WorkerProto::write(*this, teeSink, info->references);
WorkerProto::write(*this,
WorkerProto::WriteConn { .to = teeSink },
info->references);
teeSink
<< (info->deriver ? printStorePath(*info->deriver) : "")
<< 0;
@ -74,7 +76,8 @@ StorePaths Store::importPaths(Source & source, CheckSigsFlag checkSigs)
//Activity act(*logger, lvlInfo, "importing path '%s'", info.path);
auto references = WorkerProto::Serialise<StorePathSet>::read(*this, source);
auto references = WorkerProto::Serialise<StorePathSet>::read(*this,
WorkerProto::ReadConn { .from = source });
auto deriver = readString(source);
auto narHash = hashString(htSHA256, saved.s);

52
src/libstore/legacy-ssh-store.cc
View file

@ -48,6 +48,42 @@ struct LegacySSHStore : public virtual LegacySSHStoreConfig, public virtual Stor
FdSource from;
int remoteVersion;
bool good = true;
/**
* Coercion to `WorkerProto::ReadConn`. This makes it easy to use the
* factored out worker protocol searlizers with a
* `LegacySSHStore::Connection`.
*
* The worker protocol connection types are unidirectional, unlike
* this type.
*
* @todo Use server protocol serializers, not worker protocol
* serializers, once we have made that distiction.
*/
operator WorkerProto::ReadConn ()
{
return WorkerProto::ReadConn {
.from = from,
};
}
/*
* Coercion to `WorkerProto::WriteConn`. This makes it easy to use the
* factored out worker protocol searlizers with a
* `LegacySSHStore::Connection`.
*
* The worker protocol connection types are unidirectional, unlike
* this type.
*
* @todo Use server protocol serializers, not worker protocol
* serializers, once we have made that distiction.
*/
operator WorkerProto::WriteConn ()
{
return WorkerProto::WriteConn {
.to = to,
};
}
};
std::string host;
@ -147,7 +183,7 @@ struct LegacySSHStore : public virtual LegacySSHStoreConfig, public virtual Stor
auto deriver = readString(conn->from);
if (deriver != "")
info->deriver = parseStorePath(deriver);
info->references = WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
info->references = WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
readLongLong(conn->from); // download size
info->narSize = readLongLong(conn->from);
@ -181,7 +217,7 @@ struct LegacySSHStore : public virtual LegacySSHStoreConfig, public virtual Stor
<< printStorePath(info.path)
<< (info.deriver ? printStorePath(*info.deriver) : "")
<< info.narHash.to_string(Base16, false);
WorkerProto::write(*this, conn->to, info.references);
WorkerProto::write(*this, *conn, info.references);
conn->to
<< info.registrationTime
<< info.narSize
@ -210,7 +246,7 @@ struct LegacySSHStore : public virtual LegacySSHStoreConfig, public virtual Stor
conn->to
<< exportMagic
<< printStorePath(info.path);
WorkerProto::write(*this, conn->to, info.references);
WorkerProto::write(*this, *conn, info.references);
conn->to
<< (info.deriver ? printStorePath(*info.deriver) : "")
<< 0
@ -295,7 +331,7 @@ public:
if (GET_PROTOCOL_MINOR(conn->remoteVersion) >= 3)
conn->from >> status.timesBuilt >> status.isNonDeterministic >> status.startTime >> status.stopTime;
if (GET_PROTOCOL_MINOR(conn->remoteVersion) >= 6) {
auto builtOutputs = WorkerProto::Serialise<DrvOutputs>::read(*this, conn->from);
auto builtOutputs = WorkerProto::Serialise<DrvOutputs>::read(*this, *conn);
for (auto && [output, realisation] : builtOutputs)
status.builtOutputs.insert_or_assign(
std::move(output.outputName),
@ -370,10 +406,10 @@ public:
conn->to
<< ServeProto::Command::QueryClosure
<< includeOutputs;
WorkerProto::write(*this, conn->to, paths);
WorkerProto::write(*this, *conn, paths);
conn->to.flush();
for (auto & i : WorkerProto::Serialise<StorePathSet>::read(*this, conn->from))
for (auto & i : WorkerProto::Serialise<StorePathSet>::read(*this, *conn))
out.insert(i);
}
@ -386,10 +422,10 @@ public:
<< ServeProto::Command::QueryValidPaths
<< false // lock
<< maybeSubstitute;
WorkerProto::write(*this, conn->to, paths);
WorkerProto::write(*this, *conn, paths);
conn->to.flush();
return WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
return WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
}
void connect() override

7
src/libstore/path-info.cc
View file

@ -133,7 +133,8 @@ ValidPathInfo ValidPathInfo::read(Source & source, const Store & store, unsigned
auto narHash = Hash::parseAny(readString(source), htSHA256);
ValidPathInfo info(path, narHash);
if (deriver != "") info.deriver = store.parseStorePath(deriver);
info.references = WorkerProto::Serialise<StorePathSet>::read(store, source);
info.references = WorkerProto::Serialise<StorePathSet>::read(store,
WorkerProto::ReadConn { .from = source });
source >> info.registrationTime >> info.narSize;
if (format >= 16) {
source >> info.ultimate;
@ -154,7 +155,9 @@ void ValidPathInfo::write(
sink << store.printStorePath(path);
sink << (deriver ? store.printStorePath(*deriver) : "")
<< narHash.to_string(Base16, false);
WorkerProto::write(store, sink, references);
WorkerProto::write(store,
WorkerProto::WriteConn { .to = sink },
references);
sink << registrationTime << narSize;
if (format >= 16) {
sink << ultimate

97
src/libstore/remote-store-connection.hh Normal file
View file

@ -0,0 +1,97 @@
#include "remote-store.hh"
#include "worker-protocol.hh"
namespace nix {
/**
* Bidirectional connection (send and receive) used by the Remote Store
* implementation.
*
* Contains `Source` and `Sink` for actual communication, along with
* other information learned when negotiating the connection.
*/
struct RemoteStore::Connection
{
/**
* Send with this.
*/
FdSink to;
/**
* Receive with this.
*/
FdSource from;
/**
* Worker protocol version used for the connection.
*
* Despite its name, I think it is actually the maximum version both
* sides support. (If the maximum doesn't exist, we would fail to
* establish a connection and produce a value of this type.)
*/
unsigned int daemonVersion;
/**
* Whether the remote side trusts us or not.
*
* 3 values: "yes", "no", or `std::nullopt` for "unknown".
*
* Note that the "remote side" might not be just the end daemon, but
* also an intermediary forwarder that can make its own trusting
* decisions. This would be the intersection of all their trust
* decisions, since it takes only one link in the chain to start
* denying operations.
*/
std::optional<TrustedFlag> remoteTrustsUs;
/**
* The version of the Nix daemon that is processing our requests.
*
* Do note, it may or may not communicating with another daemon,
* rather than being an "end" `LocalStore` or similar.
*/
std::optional<std::string> daemonNixVersion;
/**
* Time this connection was established.
*/
std::chrono::time_point<std::chrono::steady_clock> startTime;
/**
* Coercion to `WorkerProto::ReadConn`. This makes it easy to use the
* factored out worker protocol searlizers with a
* `RemoteStore::Connection`.
*
* The worker protocol connection types are unidirectional, unlike
* this type.
*/
operator WorkerProto::ReadConn ()
{
return WorkerProto::ReadConn {
.from = from,
};
}
/**
* Coercion to `WorkerProto::WriteConn`. This makes it easy to use the
* factored out worker protocol searlizers with a
* `RemoteStore::Connection`.
*
* The worker protocol connection types are unidirectional, unlike
* this type.
*/
operator WorkerProto::WriteConn ()
{
return WorkerProto::WriteConn {
.to = to,
};
}
virtual ~Connection();
virtual void closeWrite() = 0;
std::exception_ptr processStderr(Sink * sink = 0, Source * source = 0, bool flush = true);
};
}

76
src/libstore/remote-store.cc
View file

@ -5,6 +5,7 @@
#include "remote-fs-accessor.hh"
#include "build-result.hh"
#include "remote-store.hh"
#include "remote-store-connection.hh"
#include "worker-protocol.hh"
#include "worker-protocol-impl.hh"
#include "archive.hh"
@ -101,7 +102,7 @@ void RemoteStore::initConnection(Connection & conn)
}
if (GET_PROTOCOL_MINOR(conn.daemonVersion) >= 35) {
conn.remoteTrustsUs = WorkerProto::Serialise<std::optional<TrustedFlag>>::read(*this, conn.from);
conn.remoteTrustsUs = WorkerProto::Serialise<std::optional<TrustedFlag>>::read(*this, conn);
} else {
// We don't know the answer; protocol to old.
conn.remoteTrustsUs = std::nullopt;
@ -185,6 +186,7 @@ struct ConnectionHandle
}
RemoteStore::Connection * operator -> () { return &*handle; }
RemoteStore::Connection & operator * () { return *handle; }
void processStderr(Sink * sink = 0, Source * source = 0, bool flush = true)
{
@ -228,12 +230,12 @@ StorePathSet RemoteStore::queryValidPaths(const StorePathSet & paths, Substitute
return res;
} else {
conn->to << WorkerProto::Op::QueryValidPaths;
WorkerProto::write(*this, conn->to, paths);
WorkerProto::write(*this, *conn, paths);
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 27) {
conn->to << (settings.buildersUseSubstitutes ? 1 : 0);
}
conn.processStderr();
return WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
return WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
}
}
@ -243,7 +245,7 @@ StorePathSet RemoteStore::queryAllValidPaths()
auto conn(getConnection());
conn->to << WorkerProto::Op::QueryAllValidPaths;
conn.processStderr();
return WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
return WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
}
@ -260,9 +262,9 @@ StorePathSet RemoteStore::querySubstitutablePaths(const StorePathSet & paths)
return res;
} else {
conn->to << WorkerProto::Op::QuerySubstitutablePaths;
WorkerProto::write(*this, conn->to, paths);
WorkerProto::write(*this, *conn, paths);
conn.processStderr();
return WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
return WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
}
}
@ -284,7 +286,7 @@ void RemoteStore::querySubstitutablePathInfos(const StorePathCAMap & pathsMap, S
auto deriver = readString(conn->from);
if (deriver != "")
info.deriver = parseStorePath(deriver);
info.references = WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
info.references = WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
info.downloadSize = readLongLong(conn->from);
info.narSize = readLongLong(conn->from);
infos.insert_or_assign(i.first, std::move(info));
@ -297,9 +299,9 @@ void RemoteStore::querySubstitutablePathInfos(const StorePathCAMap & pathsMap, S
StorePathSet paths;
for (auto & path : pathsMap)
paths.insert(path.first);
WorkerProto::write(*this, conn->to, paths);
WorkerProto::write(*this, *conn, paths);
} else
WorkerProto::write(*this, conn->to, pathsMap);
WorkerProto::write(*this, *conn, pathsMap);
conn.processStderr();
size_t count = readNum<size_t>(conn->from);
for (size_t n = 0; n < count; n++) {
@ -307,7 +309,7 @@ void RemoteStore::querySubstitutablePathInfos(const StorePathCAMap & pathsMap, S
auto deriver = readString(conn->from);
if (deriver != "")
info.deriver = parseStorePath(deriver);
info.references = WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
info.references = WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
info.downloadSize = readLongLong(conn->from);
info.narSize = readLongLong(conn->from);
}
@ -350,7 +352,7 @@ void RemoteStore::queryReferrers(const StorePath & path,
auto conn(getConnection());
conn->to << WorkerProto::Op::QueryReferrers << printStorePath(path);
conn.processStderr();
for (auto & i : WorkerProto::Serialise<StorePathSet>::read(*this, conn->from))
for (auto & i : WorkerProto::Serialise<StorePathSet>::read(*this, *conn))
referrers.insert(i);
}
@ -360,7 +362,7 @@ StorePathSet RemoteStore::queryValidDerivers(const StorePath & path)
auto conn(getConnection());
conn->to << WorkerProto::Op::QueryValidDerivers << printStorePath(path);
conn.processStderr();
return WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
return WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
}
@ -372,7 +374,7 @@ StorePathSet RemoteStore::queryDerivationOutputs(const StorePath & path)
auto conn(getConnection());
conn->to << WorkerProto::Op::QueryDerivationOutputs << printStorePath(path);
conn.processStderr();
return WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
return WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
}
@ -382,7 +384,7 @@ std::map<std::string, std::optional<StorePath>> RemoteStore::queryPartialDerivat
auto conn(getConnection());
conn->to << WorkerProto::Op::QueryDerivationOutputMap << printStorePath(path);
conn.processStderr();
return WorkerProto::Serialise<std::map<std::string, std::optional<StorePath>>>::read(*this, conn->from);
return WorkerProto::Serialise<std::map<std::string, std::optional<StorePath>>>::read(*this, *conn);
} else {
// Fallback for old daemon versions.
// For floating-CA derivations (and their co-dependencies) this is an
@ -428,7 +430,7 @@ ref<const ValidPathInfo> RemoteStore::addCAToStore(
<< WorkerProto::Op::AddToStore
<< name
<< caMethod.render(hashType);
WorkerProto::write(*this, conn->to, references);
WorkerProto::write(*this, *conn, references);
conn->to << repair;
// The dump source may invoke the store, so we need to make some room.
@ -453,7 +455,7 @@ ref<const ValidPathInfo> RemoteStore::addCAToStore(
name, printHashType(hashType));
std::string s = dump.drain();
conn->to << WorkerProto::Op::AddTextToStore << name << s;
WorkerProto::write(*this, conn->to, references);
WorkerProto::write(*this, *conn, references);
conn.processStderr();
},
[&](const FileIngestionMethod & fim) -> void {
@ -519,7 +521,7 @@ void RemoteStore::addToStore(const ValidPathInfo & info, Source & source,
sink
<< exportMagic
<< printStorePath(info.path);
WorkerProto::write(*this, sink, info.references);
WorkerProto::write(*this, *conn, info.references);
sink
<< (info.deriver ? printStorePath(*info.deriver) : "")
<< 0 // == no legacy signature
@ -529,7 +531,7 @@ void RemoteStore::addToStore(const ValidPathInfo & info, Source & source,
conn.processStderr(0, source2.get());
auto importedPaths = WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
auto importedPaths = WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
assert(importedPaths.size() <= 1);
}
@ -538,7 +540,7 @@ void RemoteStore::addToStore(const ValidPathInfo & info, Source & source,
<< printStorePath(info.path)
<< (info.deriver ? printStorePath(*info.deriver) : "")
<< info.narHash.to_string(Base16, false);
WorkerProto::write(*this, conn->to, info.references);
WorkerProto::write(*this, *conn, info.references);
conn->to << info.registrationTime << info.narSize
<< info.ultimate << info.sigs << renderContentAddress(info.ca)
<< repair << !checkSigs;
@ -611,7 +613,7 @@ void RemoteStore::registerDrvOutput(const Realisation & info)
conn->to << info.id.to_string();
conn->to << std::string(info.outPath.to_string());
} else {
WorkerProto::write(*this, conn->to, info);
WorkerProto::write(*this, *conn, info);
}
conn.processStderr();
}
@ -634,13 +636,13 @@ void RemoteStore::queryRealisationUncached(const DrvOutput & id,
auto real = [&]() -> std::shared_ptr<const Realisation> {
if (GET_PROTOCOL_MINOR(conn->daemonVersion) < 31) {
auto outPaths = WorkerProto::Serialise<std::set<StorePath>>::read(
*this, conn->from);
*this, *conn);
if (outPaths.empty())
return nullptr;
return std::make_shared<const Realisation>(Realisation { .id = id, .outPath = *outPaths.begin() });
} else {
auto realisations = WorkerProto::Serialise<std::set<Realisation>>::read(
*this, conn->from);
*this, *conn);
if (realisations.empty())
return nullptr;
return std::make_shared<const Realisation>(*realisations.begin());
@ -651,10 +653,10 @@ void RemoteStore::queryRealisationUncached(const DrvOutput & id,
} catch (...) { return callback.rethrow(); }
}
static void writeDerivedPaths(RemoteStore & store, ConnectionHandle & conn, const std::vector<DerivedPath> & reqs)
static void writeDerivedPaths(RemoteStore & store, RemoteStore::Connection & conn, const std::vector<DerivedPath> & reqs)
{
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 30) {
WorkerProto::write(store, conn->to, reqs);
if (GET_PROTOCOL_MINOR(conn.daemonVersion) >= 30) {
WorkerProto::write(store, conn, reqs);
} else {
Strings ss;
for (auto & p : reqs) {
@ -666,12 +668,12 @@ static void writeDerivedPaths(RemoteStore & store, ConnectionHandle & conn, cons
[&](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));
GET_PROTOCOL_MAJOR(conn.daemonVersion),
GET_PROTOCOL_MINOR(conn.daemonVersion));
},
}, sOrDrvPath);
}
conn->to << ss;
conn.to << ss;
}
}
@ -697,7 +699,7 @@ void RemoteStore::buildPaths(const std::vector<DerivedPath> & drvPaths, BuildMod
auto conn(getConnection());
conn->to << WorkerProto::Op::BuildPaths;
assert(GET_PROTOCOL_MINOR(conn->daemonVersion) >= 13);
writeDerivedPaths(*this, conn, drvPaths);
writeDerivedPaths(*this, *conn, drvPaths);
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 15)
conn->to << buildMode;
else
@ -721,10 +723,10 @@ std::vector<KeyedBuildResult> RemoteStore::buildPathsWithResults(
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 34) {
conn->to << WorkerProto::Op::BuildPathsWithResults;
writeDerivedPaths(*this, conn, paths);
writeDerivedPaths(*this, *conn, paths);
conn->to << buildMode;
conn.processStderr();
return WorkerProto::Serialise<std::vector<KeyedBuildResult>>::read(*this, conn->from);
return WorkerProto::Serialise<std::vector<KeyedBuildResult>>::read(*this, *conn);
} else {
// Avoid deadlock.
conn_.reset();
@ -807,7 +809,7 @@ BuildResult RemoteStore::buildDerivation(const StorePath & drvPath, const BasicD
conn->from >> res.timesBuilt >> res.isNonDeterministic >> res.startTime >> res.stopTime;
}
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 28) {
auto builtOutputs = WorkerProto::Serialise<DrvOutputs>::read(*this, conn->from);
auto builtOutputs = WorkerProto::Serialise<DrvOutputs>::read(*this, *conn);
for (auto && [output, realisation] : builtOutputs)
res.builtOutputs.insert_or_assign(
std::move(output.outputName),
@ -866,7 +868,7 @@ void RemoteStore::collectGarbage(const GCOptions & options, GCResults & results)
conn->to
<< WorkerProto::Op::CollectGarbage << options.action;
WorkerProto::write(*this, conn->to, options.pathsToDelete);
WorkerProto::write(*this, *conn, options.pathsToDelete);
conn->to << options.ignoreLiveness
<< options.maxFreed
/* removed options */
@ -923,11 +925,11 @@ void RemoteStore::queryMissing(const std::vector<DerivedPath> & targets,
// to prevent a deadlock.
goto fallback;
conn->to << WorkerProto::Op::QueryMissing;
writeDerivedPaths(*this, conn, targets);
writeDerivedPaths(*this, *conn, targets);
conn.processStderr();
willBuild = WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
willSubstitute = WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
unknown = WorkerProto::Serialise<StorePathSet>::read(*this, conn->from);
willBuild = WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
willSubstitute = WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
unknown = WorkerProto::Serialise<StorePathSet>::read(*this, *conn);
conn->from >> downloadSize >> narSize;
return;
}

16
src/libstore/remote-store.hh
View file

@ -166,21 +166,7 @@ public:
void flushBadConnections();
struct Connection
{
FdSink to;
FdSource from;
unsigned int daemonVersion;
std::optional<TrustedFlag> remoteTrustsUs;
std::optional<std::string> daemonNixVersion;
std::chrono::time_point<std::chrono::steady_clock> startTime;
virtual ~Connection();
virtual void closeWrite() = 0;
std::exception_ptr processStderr(Sink * sink = 0, Source * source = 0, bool flush = true);
};
struct Connection;
ref<Connection> openConnectionWrapper();

1
src/libstore/ssh-store.cc
View file

@ -1,6 +1,7 @@
#include "ssh-store-config.hh"
#include "store-api.hh"
#include "remote-store.hh"
#include "remote-store-connection.hh"
#include "remote-fs-accessor.hh"
#include "archive.hh"
#include "worker-protocol.hh"

1
src/libstore/uds-remote-store.hh
View file

@ -2,6 +2,7 @@
///@file
#include "remote-store.hh"
#include "remote-store-connection.hh"
#include "local-fs-store.hh"
namespace nix {

40
src/libstore/worker-protocol-impl.hh
View file

@ -13,65 +13,65 @@
namespace nix {
template<typename T>
std::vector<T> WorkerProto::Serialise<std::vector<T>>::read(const Store & store, Source & from)
std::vector<T> WorkerProto::Serialise<std::vector<T>>::read(const Store & store, WorkerProto::ReadConn conn)
{
std::vector<T> resSet;
auto size = readNum<size_t>(from);
auto size = readNum<size_t>(conn.from);
while (size--) {
resSet.push_back(WorkerProto::Serialise<T>::read(store, from));
resSet.push_back(WorkerProto::Serialise<T>::read(store, conn));
}
return resSet;
}
template<typename T>
void WorkerProto::Serialise<std::vector<T>>::write(const Store & store, Sink & out, const std::vector<T> & resSet)
void WorkerProto::Serialise<std::vector<T>>::write(const Store & store, WorkerProto::WriteConn conn, const std::vector<T> & resSet)
{
out << resSet.size();
conn.to << resSet.size();
for (auto & key : resSet) {
WorkerProto::Serialise<T>::write(store, out, key);
WorkerProto::Serialise<T>::write(store, conn, key);
}
}
template<typename T>
std::set<T> WorkerProto::Serialise<std::set<T>>::read(const Store & store, Source & from)
std::set<T> WorkerProto::Serialise<std::set<T>>::read(const Store & store, WorkerProto::ReadConn conn)
{
std::set<T> resSet;
auto size = readNum<size_t>(from);
auto size = readNum<size_t>(conn.from);
while (size--) {
resSet.insert(WorkerProto::Serialise<T>::read(store, from));
resSet.insert(WorkerProto::Serialise<T>::read(store, conn));
}
return resSet;
}
template<typename T>
void WorkerProto::Serialise<std::set<T>>::write(const Store & store, Sink & out, const std::set<T> & resSet)
void WorkerProto::Serialise<std::set<T>>::write(const Store & store, WorkerProto::WriteConn conn, const std::set<T> & resSet)
{
out << resSet.size();
conn.to << resSet.size();
for (auto & key : resSet) {
WorkerProto::Serialise<T>::write(store, out, key);
WorkerProto::Serialise<T>::write(store, conn, key);
}
}
template<typename K, typename V>
std::map<K, V> WorkerProto::Serialise<std::map<K, V>>::read(const Store & store, Source & from)
std::map<K, V> WorkerProto::Serialise<std::map<K, V>>::read(const Store & store, WorkerProto::ReadConn conn)
{
std::map<K, V> resMap;
auto size = readNum<size_t>(from);
auto size = readNum<size_t>(conn.from);
while (size--) {
auto k = WorkerProto::Serialise<K>::read(store, from);
auto v = WorkerProto::Serialise<V>::read(store, from);
auto k = WorkerProto::Serialise<K>::read(store, conn);
auto v = WorkerProto::Serialise<V>::read(store, conn);
resMap.insert_or_assign(std::move(k), std::move(v));
}
return resMap;
}
template<typename K, typename V>
void WorkerProto::Serialise<std::map<K, V>>::write(const Store & store, Sink & out, const std::map<K, V> & resMap)
void WorkerProto::Serialise<std::map<K, V>>::write(const Store & store, WorkerProto::WriteConn conn, const std::map<K, V> & resMap)
{
out << resMap.size();
conn.to << resMap.size();
for (auto & i : resMap) {
WorkerProto::Serialise<K>::write(store, out, i.first);
WorkerProto::Serialise<V>::write(store, out, i.second);
WorkerProto::Serialise<K>::write(store, conn, i.first);
WorkerProto::Serialise<V>::write(store, conn, i.second);
}
}

102
src/libstore/worker-protocol.cc
View file

@ -12,31 +12,31 @@
namespace nix {
std::string WorkerProto::Serialise<std::string>::read(const Store & store, Source & from)
std::string WorkerProto::Serialise<std::string>::read(const Store & store, WorkerProto::ReadConn conn)
{
return readString(from);
return readString(conn.from);
}
void WorkerProto::Serialise<std::string>::write(const Store & store, Sink & out, const std::string & str)
void WorkerProto::Serialise<std::string>::write(const Store & store, WorkerProto::WriteConn conn, const std::string & str)
{
out << str;
conn.to << str;
}
StorePath WorkerProto::Serialise<StorePath>::read(const Store & store, Source & from)
StorePath WorkerProto::Serialise<StorePath>::read(const Store & store, WorkerProto::ReadConn conn)
{
return store.parseStorePath(readString(from));
return store.parseStorePath(readString(conn.from));
}
void WorkerProto::Serialise<StorePath>::write(const Store & store, Sink & out, const StorePath & storePath)
void WorkerProto::Serialise<StorePath>::write(const Store & store, WorkerProto::WriteConn conn, const StorePath & storePath)
{
out << store.printStorePath(storePath);
conn.to << store.printStorePath(storePath);
}
std::optional<TrustedFlag> WorkerProto::Serialise<std::optional<TrustedFlag>>::read(const Store & store, Source & from)
std::optional<TrustedFlag> WorkerProto::Serialise<std::optional<TrustedFlag>>::read(const Store & store, WorkerProto::ReadConn conn)
{
auto temp = readNum<uint8_t>(from);
auto temp = readNum<uint8_t>(conn.from);
switch (temp) {
case 0:
return std::nullopt;
@ -49,17 +49,17 @@ std::optional<TrustedFlag> WorkerProto::Serialise<std::optional<TrustedFlag>>::r
}
}
void WorkerProto::Serialise<std::optional<TrustedFlag>>::write(const Store & store, Sink & out, const std::optional<TrustedFlag> & optTrusted)
void WorkerProto::Serialise<std::optional<TrustedFlag>>::write(const Store & store, WorkerProto::WriteConn conn, const std::optional<TrustedFlag> & optTrusted)
{
if (!optTrusted)
out << (uint8_t)0;
conn.to << (uint8_t)0;
else {
switch (*optTrusted) {
case Trusted:
out << (uint8_t)1;
conn.to << (uint8_t)1;
break;
case NotTrusted:
out << (uint8_t)2;
conn.to << (uint8_t)2;
break;
default:
assert(false);
@ -68,83 +68,83 @@ void WorkerProto::Serialise<std::optional<TrustedFlag>>::write(const Store & sto
}
ContentAddress WorkerProto::Serialise<ContentAddress>::read(const Store & store, Source & from)
ContentAddress WorkerProto::Serialise<ContentAddress>::read(const Store & store, WorkerProto::ReadConn conn)
{
return ContentAddress::parse(readString(from));
return ContentAddress::parse(readString(conn.from));
}
void WorkerProto::Serialise<ContentAddress>::write(const Store & store, Sink & out, const ContentAddress & ca)
void WorkerProto::Serialise<ContentAddress>::write(const Store & store, WorkerProto::WriteConn conn, const ContentAddress & ca)
{
out << renderContentAddress(ca);
conn.to << renderContentAddress(ca);
}
DerivedPath WorkerProto::Serialise<DerivedPath>::read(const Store & store, Source & from)
DerivedPath WorkerProto::Serialise<DerivedPath>::read(const Store & store, WorkerProto::ReadConn conn)
{
auto s = readString(from);
auto s = readString(conn.from);
return DerivedPath::parseLegacy(store, s);
}
void WorkerProto::Serialise<DerivedPath>::write(const Store & store, Sink & out, const DerivedPath & req)
void WorkerProto::Serialise<DerivedPath>::write(const Store & store, WorkerProto::WriteConn conn, const DerivedPath & req)
{
out << req.to_string_legacy(store);
conn.to << req.to_string_legacy(store);
}
Realisation WorkerProto::Serialise<Realisation>::read(const Store & store, Source & from)
Realisation WorkerProto::Serialise<Realisation>::read(const Store & store, WorkerProto::ReadConn conn)
{
std::string rawInput = readString(from);
std::string rawInput = readString(conn.from);
return Realisation::fromJSON(
nlohmann::json::parse(rawInput),
"remote-protocol"
);
}
void WorkerProto::Serialise<Realisation>::write(const Store & store, Sink & out, const Realisation & realisation)
void WorkerProto::Serialise<Realisation>::write(const Store & store, WorkerProto::WriteConn conn, const Realisation & realisation)
{
out << realisation.toJSON().dump();
conn.to << realisation.toJSON().dump();
}
DrvOutput WorkerProto::Serialise<DrvOutput>::read(const Store & store, Source & from)
DrvOutput WorkerProto::Serialise<DrvOutput>::read(const Store & store, WorkerProto::ReadConn conn)
{
return DrvOutput::parse(readString(from));
return DrvOutput::parse(readString(conn.from));
}
void WorkerProto::Serialise<DrvOutput>::write(const Store & store, Sink & out, const DrvOutput & drvOutput)
void WorkerProto::Serialise<DrvOutput>::write(const Store & store, WorkerProto::WriteConn conn, const DrvOutput & drvOutput)
{
out << drvOutput.to_string();
conn.to << drvOutput.to_string();
}
KeyedBuildResult WorkerProto::Serialise<KeyedBuildResult>::read(const Store & store, Source & from)
KeyedBuildResult WorkerProto::Serialise<KeyedBuildResult>::read(const Store & store, WorkerProto::ReadConn conn)
{
auto path = WorkerProto::Serialise<DerivedPath>::read(store, from);
auto br = WorkerProto::Serialise<BuildResult>::read(store, from);
auto path = WorkerProto::Serialise<DerivedPath>::read(store, conn);
auto br = WorkerProto::Serialise<BuildResult>::read(store, conn);
return KeyedBuildResult {
std::move(br),
/* .path = */ std::move(path),
};
}
void WorkerProto::Serialise<KeyedBuildResult>::write(const Store & store, Sink & to, const KeyedBuildResult & res)
void WorkerProto::Serialise<KeyedBuildResult>::write(const Store & store, WorkerProto::WriteConn conn, const KeyedBuildResult & res)
{
WorkerProto::write(store, to, res.path);
WorkerProto::write(store, to, static_cast<const BuildResult &>(res));
WorkerProto::write(store, conn, res.path);
WorkerProto::write(store, conn, static_cast<const BuildResult &>(res));
}
BuildResult WorkerProto::Serialise<BuildResult>::read(const Store & store, Source & from)
BuildResult WorkerProto::Serialise<BuildResult>::read(const Store & store, WorkerProto::ReadConn conn)
{
BuildResult res;
res.status = (BuildResult::Status) readInt(from);
from
res.status = (BuildResult::Status) readInt(conn.from);
conn.from
>> res.errorMsg
>> res.timesBuilt
>> res.isNonDeterministic
>> res.startTime
>> res.stopTime;
auto builtOutputs = WorkerProto::Serialise<DrvOutputs>::read(store, from);
auto builtOutputs = WorkerProto::Serialise<DrvOutputs>::read(store, conn);
for (auto && [output, realisation] : builtOutputs)
res.builtOutputs.insert_or_assign(
std::move(output.outputName),
@ -152,9 +152,9 @@ BuildResult WorkerProto::Serialise<BuildResult>::read(const Store & store, Sourc
return res;
}
void WorkerProto::Serialise<BuildResult>::write(const Store & store, Sink & to, const BuildResult & res)
void WorkerProto::Serialise<BuildResult>::write(const Store & store, WorkerProto::WriteConn conn, const BuildResult & res)
{
to
conn.to
<< res.status
<< res.errorMsg
<< res.timesBuilt
@ -164,30 +164,30 @@ void WorkerProto::Serialise<BuildResult>::write(const Store & store, Sink & to,
DrvOutputs builtOutputs;
for (auto & [output, realisation] : res.builtOutputs)
builtOutputs.insert_or_assign(realisation.id, realisation);
WorkerProto::write(store, to, builtOutputs);
WorkerProto::write(store, conn, builtOutputs);
}
std::optional<StorePath> WorkerProto::Serialise<std::optional<StorePath>>::read(const Store & store, Source & from)
std::optional<StorePath> WorkerProto::Serialise<std::optional<StorePath>>::read(const Store & store, WorkerProto::ReadConn conn)
{
auto s = readString(from);
auto s = readString(conn.from);
return s == "" ? std::optional<StorePath> {} : store.parseStorePath(s);
}
void WorkerProto::Serialise<std::optional<StorePath>>::write(const Store & store, Sink & out, const std::optional<StorePath> & storePathOpt)
void WorkerProto::Serialise<std::optional<StorePath>>::write(const Store & store, WorkerProto::WriteConn conn, const std::optional<StorePath> & storePathOpt)
{
out << (storePathOpt ? store.printStorePath(*storePathOpt) : "");
conn.to << (storePathOpt ? store.printStorePath(*storePathOpt) : "");
}
std::optional<ContentAddress> WorkerProto::Serialise<std::optional<ContentAddress>>::read(const Store & store, Source & from)
std::optional<ContentAddress> WorkerProto::Serialise<std::optional<ContentAddress>>::read(const Store & store, WorkerProto::ReadConn conn)
{
return ContentAddress::parseOpt(readString(from));
return ContentAddress::parseOpt(readString(conn.from));
}
void WorkerProto::Serialise<std::optional<ContentAddress>>::write(const Store & store, Sink & out, const std::optional<ContentAddress> & caOpt)
void WorkerProto::Serialise<std::optional<ContentAddress>>::write(const Store & store, WorkerProto::WriteConn conn, const std::optional<ContentAddress> & caOpt)
{
out << (caOpt ? renderContentAddress(*caOpt) : "");
conn.to << (caOpt ? renderContentAddress(*caOpt) : "");
}
}

34
src/libstore/worker-protocol.hh
View file

@ -49,6 +49,28 @@ struct WorkerProto
*/
enum struct Op : uint64_t;
/**
* A unidirectional read connection, to be used by the read half of the
* canonical serializers below.
*
* This currently is just a `Source &`, but more fields will be added
* later.
*/
struct ReadConn {
Source & from;
};
/**
* A unidirectional write connection, to be used by the write half of the
* canonical serializers below.
*
* This currently is just a `Sink &`, but more fields will be added
* later.
*/
struct WriteConn {
Sink & to;
};
/**
* Data type for canonical pairs of serialisers for the worker protocol.
*
@ -75,8 +97,8 @@ struct WorkerProto
// This makes for a quicker debug cycle, as desired.
#if 0
{
static T read(const Store & store, Source & from);
static void write(const Store & store, Sink & out, const T & t);
static T read(const Store & store, ReadConn conn);
static void write(const Store & store, WriteConn conn, const T & t);
};
#endif
@ -85,9 +107,9 @@ struct WorkerProto
* infer the type instead of having to write it down explicitly.
*/
template<typename T>
static void write(const Store & store, Sink & out, const T & t)
static void write(const Store & store, WriteConn conn, const T & t)
{
WorkerProto::Serialise<T>::write(store, out, t);
WorkerProto::Serialise<T>::write(store, conn, t);
}
};
@ -171,8 +193,8 @@ inline std::ostream & operator << (std::ostream & s, WorkerProto::Op op)
*/
#define MAKE_WORKER_PROTO(T) \
struct WorkerProto::Serialise< T > { \
static T read(const Store & store, Source & from); \
static void write(const Store & store, Sink & out, const T & t); \
static T read(const Store & store, WorkerProto::ReadConn conn); \
static void write(const Store & store, WorkerProto::WriteConn conn, const T & t); \
};
template<>

21
src/nix-store/nix-store.cc
View file

@ -807,6 +807,9 @@ static void opServe(Strings opFlags, Strings opArgs)
out.flush();
unsigned int clientVersion = readInt(in);
WorkerProto::ReadConn rconn { .from = in };
WorkerProto::WriteConn wconn { .to = out };
auto getBuildSettings = [&]() {
// FIXME: changing options here doesn't work if we're
// building through the daemon.
@ -850,7 +853,7 @@ static void opServe(Strings opFlags, Strings opArgs)
case ServeProto::Command::QueryValidPaths: {
bool lock = readInt(in);
bool substitute = readInt(in);
auto paths = WorkerProto::Serialise<StorePathSet>::read(*store, in);
auto paths = WorkerProto::Serialise<StorePathSet>::read(*store, rconn);
if (lock && writeAllowed)
for (auto & path : paths)
store->addTempRoot(path);
@ -859,19 +862,19 @@ static void opServe(Strings opFlags, Strings opArgs)
store->substitutePaths(paths);
}
WorkerProto::write(*store, out, store->queryValidPaths(paths));
WorkerProto::write(*store, wconn, store->queryValidPaths(paths));
break;
}
case ServeProto::Command::QueryPathInfos: {
auto paths = WorkerProto::Serialise<StorePathSet>::read(*store, in);
auto paths = WorkerProto::Serialise<StorePathSet>::read(*store, rconn);
// !!! Maybe we want a queryPathInfos?
for (auto & i : paths) {
try {
auto info = store->queryPathInfo(i);
out << store->printStorePath(info->path)
<< (info->deriver ? store->printStorePath(*info->deriver) : "");
WorkerProto::write(*store, out, info->references);
WorkerProto::write(*store, wconn, info->references);
// !!! Maybe we want compression?
out << info->narSize // downloadSize
<< info->narSize;
@ -899,7 +902,7 @@ static void opServe(Strings opFlags, Strings opArgs)
case ServeProto::Command::ExportPaths: {
readInt(in); // obsolete
store->exportPaths(WorkerProto::Serialise<StorePathSet>::read(*store, in), out);
store->exportPaths(WorkerProto::Serialise<StorePathSet>::read(*store, rconn), out);
break;
}
@ -945,7 +948,7 @@ static void opServe(Strings opFlags, Strings opArgs)
DrvOutputs builtOutputs;
for (auto & [output, realisation] : status.builtOutputs)
builtOutputs.insert_or_assign(realisation.id, realisation);
WorkerProto::write(*store, out, builtOutputs);
WorkerProto::write(*store, wconn, builtOutputs);
}
break;
@ -954,9 +957,9 @@ static void opServe(Strings opFlags, Strings opArgs)
case ServeProto::Command::QueryClosure: {
bool includeOutputs = readInt(in);
StorePathSet closure;
store->computeFSClosure(WorkerProto::Serialise<StorePathSet>::read(*store, in),
store->computeFSClosure(WorkerProto::Serialise<StorePathSet>::read(*store, rconn),
closure, false, includeOutputs);
WorkerProto::write(*store, out, closure);
WorkerProto::write(*store, wconn, closure);
break;
}
@ -971,7 +974,7 @@ static void opServe(Strings opFlags, Strings opArgs)
};
if (deriver != "")
info.deriver = store->parseStorePath(deriver);
info.references = WorkerProto::Serialise<StorePathSet>::read(*store, in);
info.references = WorkerProto::Serialise<StorePathSet>::read(*store, rconn);
in >> info.registrationTime >> info.narSize >> info.ultimate;
info.sigs = readStrings<StringSet>(in);
info.ca = ContentAddress::parseOpt(readString(in));

1
src/nix/daemon.cc
View file

@ -4,6 +4,7 @@
#include "shared.hh"
#include "local-store.hh"
#include "remote-store.hh"
#include "remote-store-connection.hh"
#include "util.hh"
#include "serialise.hh"
#include "archive.hh"