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Merge pull request #4477 from NixOS/ca/build-remote

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Build ca derivations remotely
This commit is contained in:
Eelco Dolstra 2021-02-26 16:54:44 +01:00 committed by GitHub
parent 8d322f3c94 f54976d77b
commit 94637cd7e5
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GPG key ID: 4AEE18F83AFDEB23
17 changed files with 138 additions and 30 deletions
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43
src/build-remote/build-remote.cc
View file

@ -251,7 +251,7 @@ connected:
std::cerr << "# accept\n" << storeUri << "\n";
auto inputs = readStrings<PathSet>(source);
auto outputs = readStrings<PathSet>(source);
auto wantedOutputs = readStrings<StringSet>(source);
AutoCloseFD uploadLock = openLockFile(currentLoad + "/" + escapeUri(storeUri) + ".upload-lock", true);
@ -276,6 +276,7 @@ connected:
uploadLock = -1;
auto drv = store->readDerivation(*drvPath);
auto outputHashes = staticOutputHashes(*store, drv);
drv.inputSrcs = store->parseStorePathSet(inputs);
auto result = sshStore->buildDerivation(*drvPath, drv);
@ -283,16 +284,42 @@ connected:
if (!result.success())
throw Error("build of '%s' on '%s' failed: %s", store->printStorePath(*drvPath), storeUri, result.errorMsg);
StorePathSet missing;
for (auto & path : outputs)
if (!store->isValidPath(store->parseStorePath(path))) missing.insert(store->parseStorePath(path));
std::set<Realisation> missingRealisations;
StorePathSet missingPaths;
if (settings.isExperimentalFeatureEnabled("ca-derivations") && !derivationHasKnownOutputPaths(drv.type())) {
for (auto & outputName : wantedOutputs) {
auto thisOutputHash = outputHashes.at(outputName);
auto thisOutputId = DrvOutput{ thisOutputHash, outputName };
if (!store->queryRealisation(thisOutputId)) {
debug("missing output %s", outputName);
assert(result.builtOutputs.count(thisOutputId));
auto newRealisation = result.builtOutputs.at(thisOutputId);
missingRealisations.insert(newRealisation);
missingPaths.insert(newRealisation.outPath);
}
}
} else {
auto outputPaths = drv.outputsAndOptPaths(*store);
for (auto & [outputName, hopefullyOutputPath] : outputPaths) {
assert(hopefullyOutputPath.second);
if (!store->isValidPath(*hopefullyOutputPath.second))
missingPaths.insert(*hopefullyOutputPath.second);
}
}
if (!missing.empty()) {
if (!missingPaths.empty()) {
Activity act(*logger, lvlTalkative, actUnknown, fmt("copying outputs from '%s'", storeUri));
if (auto localStore = store.dynamic_pointer_cast<LocalStore>())
for (auto & i : missing)
localStore->locksHeld.insert(store->printStorePath(i)); /* FIXME: ugly */
copyPaths(ref<Store>(sshStore), store, missing, NoRepair, NoCheckSigs, NoSubstitute);
for (auto & path : missingPaths)
localStore->locksHeld.insert(store->printStorePath(path)); /* FIXME: ugly */
copyPaths(ref<Store>(sshStore), store, missingPaths, NoRepair, NoCheckSigs, NoSubstitute);
}
// XXX: Should be done as part of `copyPaths`
for (auto & realisation : missingRealisations) {
// Should hold, because if the feature isn't enabled the set
// of missing realisations should be empty
settings.requireExperimentalFeature("ca-derivations");
store->registerDrvOutput(realisation);
}
return 0;

18
src/libstore/build/derivation-goal.cc
View file

@ -1147,13 +1147,13 @@ HookReply DerivationGoal::tryBuildHook()
/* Tell the hooks the missing outputs that have to be copied back
from the remote system. */
{
StorePathSet missingPaths;
for (auto & [_, status] : initialOutputs) {
if (!status.known) continue;
if (buildMode != bmCheck && status.known->isValid()) continue;
missingPaths.insert(status.known->path);
StringSet missingOutputs;
for (auto & [outputName, status] : initialOutputs) {
// XXX: Does this include known CA outputs?
if (buildMode != bmCheck && status.known && status.known->isValid()) continue;
missingOutputs.insert(outputName);
}
worker_proto::write(worker.store, hook->sink, missingPaths);
worker_proto::write(worker.store, hook->sink, missingOutputs);
}
hook->sink = FdSink();
@ -2988,11 +2988,11 @@ void DerivationGoal::registerOutputs()
*/
if (hook) {
bool allValid = true;
for (auto & i : drv->outputsAndOptPaths(worker.store)) {
if (!i.second.second || !worker.store.isValidPath(*i.second.second))
for (auto & [outputName, outputPath] : worker.store.queryPartialDerivationOutputMap(drvPath)) {
if (!outputPath || !worker.store.isValidPath(*outputPath))
allValid = false;
else
finalOutputs.insert_or_assign(i.first, *i.second.second);
finalOutputs.insert_or_assign(outputName, *outputPath);
}
if (allValid) return;
}

20
src/libstore/build/entry-points.cc
View file

@ -58,6 +58,26 @@ BuildResult Store::buildDerivation(const StorePath & drvPath, const BasicDerivat
result.status = BuildResult::MiscFailure;
result.errorMsg = e.msg();
}
// XXX: Should use `goal->queryPartialDerivationOutputMap()` once it's
// extended to return the full realisation for each output
auto staticDrvOutputs = drv.outputsAndOptPaths(*this);
auto outputHashes = staticOutputHashes(*this, drv);
for (auto & [outputName, staticOutput] : staticDrvOutputs) {
auto outputId = DrvOutput{outputHashes.at(outputName), outputName};
if (staticOutput.second)
result.builtOutputs.insert_or_assign(
outputId,
Realisation{ outputId, *staticOutput.second}
);
if (settings.isExperimentalFeatureEnabled("ca-derivations") && !derivationHasKnownOutputPaths(drv.type())) {
auto realisation = this->queryRealisation(outputId);
if (realisation)
result.builtOutputs.insert_or_assign(
outputId,
*realisation
);
}
}
return result;
}

3
src/libstore/daemon.cc
View file

@ -575,6 +575,9 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
auto res = store->buildDerivation(drvPath, drv, buildMode);
logger->stopWork();
to << res.status << res.errorMsg;
if (GET_PROTOCOL_MINOR(clientVersion) >= 0xc) {
worker_proto::write(*store, to, res.builtOutputs);
}
break;
}

11
src/libstore/derivations.cc
View file

@ -57,6 +57,17 @@ bool derivationIsFixed(DerivationType dt) {
assert(false);
}
bool derivationHasKnownOutputPaths(DerivationType dt) {
switch (dt) {
case DerivationType::InputAddressed: return true;
case DerivationType::CAFixed: return true;
case DerivationType::CAFloating: return false;
case DerivationType::DeferredInputAddressed: return false;
};
assert(false);
}
bool derivationIsImpure(DerivationType dt) {
switch (dt) {
case DerivationType::InputAddressed: return false;

5
src/libstore/derivations.hh
View file

@ -94,6 +94,11 @@ bool derivationIsFixed(DerivationType);
derivation is controlled separately. Never true for non-CA derivations. */
bool derivationIsImpure(DerivationType);
/* Does the derivation knows its own output paths?
* Only true when there's no floating-ca derivation involved in the closure.
*/
bool derivationHasKnownOutputPaths(DerivationType);
struct BasicDerivation
{
DerivationOutputs outputs; /* keyed on symbolic IDs */

4
src/libstore/legacy-ssh-store.cc
View file

@ -258,7 +258,9 @@ 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) {
status.builtOutputs = worker_proto::read(*this, conn->from, Phantom<DrvOutputs> {});
}
return status;
}

2
src/libstore/realisation.hh
View file

@ -33,6 +33,8 @@ struct Realisation {
GENERATE_CMP(Realisation, me->id, me->outPath);
};
typedef std::map<DrvOutput, Realisation> DrvOutputs;
struct OpaquePath {
StorePath path;

20
src/libstore/remote-store.cc
View file

@ -12,6 +12,7 @@
#include "logging.hh"
#include "callback.hh"
#include "filetransfer.hh"
#include <nlohmann/json.hpp>
namespace nix {
@ -49,6 +50,21 @@ void write(const Store & store, Sink & out, const ContentAddress & ca)
out << renderContentAddress(ca);
}
Realisation read(const Store & store, Source & from, Phantom<Realisation> _)
{
std::string rawInput = readString(from);
return Realisation::fromJSON(
nlohmann::json::parse(rawInput),
"remote-protocol"
);
}
void write(const Store & store, Sink & out, const Realisation & realisation)
{ out << realisation.toJSON().dump(); }
DrvOutput read(const Store & store, Source & from, Phantom<DrvOutput> _)
{ return DrvOutput::parse(readString(from)); }
void write(const Store & store, Sink & out, const DrvOutput & drvOutput)
{ out << drvOutput.to_string(); }
std::optional<StorePath> read(const Store & store, Source & from, Phantom<std::optional<StorePath>> _)
{
@ -664,6 +680,10 @@ BuildResult RemoteStore::buildDerivation(const StorePath & drvPath, const BasicD
unsigned int status;
conn->from >> status >> res.errorMsg;
res.status = (BuildResult::Status) status;
if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 0xc) {
auto builtOutputs = worker_proto::read(*this, conn->from, Phantom<DrvOutputs> {});
res.builtOutputs = builtOutputs;
}
return res;
}

2
src/libstore/serve-protocol.hh
View file

@ -5,7 +5,7 @@ namespace nix {
#define SERVE_MAGIC_1 0x390c9deb
#define SERVE_MAGIC_2 0x5452eecb
#define SERVE_PROTOCOL_VERSION 0x205
#define SERVE_PROTOCOL_VERSION 0x206
#define GET_PROTOCOL_MAJOR(x) ((x) & 0xff00)
#define GET_PROTOCOL_MINOR(x) ((x) & 0x00ff)

2
src/libstore/store-api.hh
View file

@ -162,6 +162,8 @@ struct BuildResult
non-determinism.) */
bool isNonDeterministic = false;
DrvOutputs builtOutputs;
/* The start/stop times of the build (or one of the rounds, if it
was repeated). */
time_t startTime = 0, stopTime = 0;

4
src/libstore/worker-protocol.hh
View file

@ -9,7 +9,7 @@ namespace nix {
#define WORKER_MAGIC_1 0x6e697863
#define WORKER_MAGIC_2 0x6478696f
#define PROTOCOL_VERSION 0x11b
#define PROTOCOL_VERSION 0x11c
#define GET_PROTOCOL_MAJOR(x) ((x) & 0xff00)
#define GET_PROTOCOL_MINOR(x) ((x) & 0x00ff)
@ -86,6 +86,8 @@ namespace worker_proto {
MAKE_WORKER_PROTO(, std::string);
MAKE_WORKER_PROTO(, StorePath);
MAKE_WORKER_PROTO(, ContentAddress);
MAKE_WORKER_PROTO(, Realisation);
MAKE_WORKER_PROTO(, DrvOutput);
MAKE_WORKER_PROTO(template<typename T>, std::set<T>);

4
src/nix-store/nix-store.cc
View file

@ -905,6 +905,10 @@ static void opServe(Strings opFlags, Strings opArgs)
if (GET_PROTOCOL_MINOR(clientVersion) >= 3)
out << status.timesBuilt << status.isNonDeterministic << status.startTime << status.stopTime;
if (GET_PROTOCOL_MINOR(clientVersion >= 5)) {
worker_proto::write(*store, out, status.builtOutputs);
}
break;
}

16
tests/build-hook-ca.nix
View file

@ -11,6 +11,7 @@ let
args = ["sh" "-e" args.builder or (builtins.toFile "builder-${args.name}.sh" "if [ -e .attrs.sh ]; then source .attrs.sh; fi; eval \"$buildCommand\"")];
outputHashMode = "recursive";
outputHashAlgo = "sha256";
__contentAddressed = true;
} // removeAttrs args ["builder" "meta"])
// { meta = args.meta or {}; };
@ -19,7 +20,6 @@ let
name = "build-remote-input-1";
buildCommand = "echo FOO > $out";
requiredSystemFeatures = ["foo"];
outputHash = "sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc=";
};
input2 = mkDerivation {
@ -27,7 +27,16 @@ let
name = "build-remote-input-2";
buildCommand = "echo BAR > $out";
requiredSystemFeatures = ["bar"];
outputHash = "sha256-XArauVH91AVwP9hBBQNlkX9ccuPpSYx9o0zeIHb6e+Q=";
};
input3 = mkDerivation {
shell = busybox;
name = "build-remote-input-3";
buildCommand = ''
read x < ${input2}
echo $x BAZ > $out
'';
requiredSystemFeatures = ["baz"];
};
in
@ -38,8 +47,7 @@ in
buildCommand =
''
read x < ${input1}
read y < ${input2}
read y < ${input3}
echo "$x $y" > $out
'';
outputHash = "sha256-3YGhlOfbGUm9hiPn2teXXTT8M1NEpDFvfXkxMaJRld0=";
}

5
tests/build-remote-content-addressed-fixed.sh
View file

@ -1,5 +0,0 @@
source common.sh
file=build-hook-ca.nix
source build-remote.sh

7
tests/build-remote-content-addressed-floating.sh Normal file
View file

@ -0,0 +1,7 @@
source common.sh
file=build-hook-ca.nix
sed -i 's/experimental-features .*/& ca-derivations/' "$NIX_CONF_DIR"/nix.conf
source build-remote.sh

2
tests/local.mk
View file

@ -17,6 +17,7 @@ nix_tests = \
linux-sandbox.sh \
build-dry.sh \
build-remote-input-addressed.sh \
build-remote-content-addressed-floating.sh \
ssh-relay.sh \
nar-access.sh \
structured-attrs.sh \
@ -42,7 +43,6 @@ nix_tests = \
build.sh \
compute-levels.sh
# parallel.sh
# build-remote-content-addressed-fixed.sh \
install-tests += $(foreach x, $(nix_tests), tests/$(x))