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Merge branch 'path-info' into ca-drv-exotic

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This commit is contained in:
John Ericson 2022-03-25 19:40:52 +00:00
commit ff2a8ccfe1
104 changed files with 1731 additions and 762 deletions
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5
src/libstore/binary-cache-store.hh
View file

@ -2,6 +2,7 @@
#include "crypto.hh"
#include "store-api.hh"
#include "log-store.hh"
#include "pool.hh"
@ -28,7 +29,9 @@ struct BinaryCacheStoreConfig : virtual StoreConfig
"other than -1 which we reserve to indicate Nix defaults should be used"};
};
class BinaryCacheStore : public virtual BinaryCacheStoreConfig, public virtual Store
class BinaryCacheStore : public virtual BinaryCacheStoreConfig,
public virtual Store,
public virtual LogStore
{
private:

45
src/libstore/build/derivation-goal.cc
View file

@ -204,11 +204,9 @@ void DerivationGoal::haveDerivation()
{
trace("have derivation");
if (drv->type() == DerivationType::CAFloating)
if (!drv->type().hasKnownOutputPaths())
settings.requireExperimentalFeature(Xp::CaDerivations);
retrySubstitution = false;
for (auto & i : drv->outputsAndOptPaths(worker.store))
if (i.second.second)
worker.store.addTempRoot(*i.second.second);
@ -311,14 +309,11 @@ void DerivationGoal::outputsSubstitutionTried()
gaveUpOnSubstitution();
}
/* At least one of the output paths could not be
produced using a substitute. So we have to build instead. */
void DerivationGoal::gaveUpOnSubstitution()
{
/* Make sure checkPathValidity() from now on checks all
outputs. */
wantedOutputs.clear();
/* The inputs must be built before we can build this goal. */
if (useDerivation)
for (auto & i : dynamic_cast<Derivation *>(drv.get())->inputDrvs)
@ -426,7 +421,8 @@ void DerivationGoal::inputsRealised()
return;
}
if (retrySubstitution) {
if (retrySubstitution && !retriedSubstitution) {
retriedSubstitution = true;
haveDerivation();
return;
}
@ -440,9 +436,28 @@ void DerivationGoal::inputsRealised()
if (useDerivation) {
auto & fullDrv = *dynamic_cast<Derivation *>(drv.get());
if (settings.isExperimentalFeatureEnabled(Xp::CaDerivations) &&
((!fullDrv.inputDrvs.empty() && derivationIsCA(fullDrv.type()))
|| fullDrv.type() == DerivationType::DeferredInputAddressed)) {
auto drvType = fullDrv.type();
bool resolveDrv = std::visit(overloaded {
[&](const DerivationType::InputAddressed & ia) {
/* must resolve if deferred. */
return ia.deferred;
},
[&](const DerivationType::ContentAddressed & ca) {
return !fullDrv.inputDrvs.empty() && (
ca.fixed
/* Can optionally resolve if fixed, which is good
for avoiding unnecessary rebuilds. */
? settings.isExperimentalFeatureEnabled(Xp::CaDerivations)
/* Must resolve if floating and there are any inputs
drvs. */
: true);
},
}, drvType.raw());
if (resolveDrv)
{
settings.requireExperimentalFeature(Xp::CaDerivations);
/* We are be able to resolve this derivation based on the
now-known results of dependencies. If so, we become a stub goal
aliasing that resolved derivation goal */
@ -501,7 +516,7 @@ void DerivationGoal::inputsRealised()
/* Don't repeat fixed-output derivations since they're already
verified by their output hash.*/
nrRounds = derivationIsFixed(derivationType) ? 1 : settings.buildRepeat + 1;
nrRounds = derivationType.isFixed() ? 1 : settings.buildRepeat + 1;
/* Okay, try to build. Note that here we don't wait for a build
slot to become available, since we don't need one if there is a
@ -908,7 +923,7 @@ void DerivationGoal::buildDone()
st =
dynamic_cast<NotDeterministic*>(&e) ? BuildResult::NotDeterministic :
statusOk(status) ? BuildResult::OutputRejected :
derivationIsImpure(derivationType) || diskFull ? BuildResult::TransientFailure :
derivationType.isImpure() || diskFull ? BuildResult::TransientFailure :
BuildResult::PermanentFailure;
}
@ -1221,7 +1236,7 @@ void DerivationGoal::flushLine()
std::map<std::string, std::optional<StorePath>> DerivationGoal::queryPartialDerivationOutputMap()
{
if (!useDerivation || drv->type() != DerivationType::CAFloating) {
if (!useDerivation || drv->type().hasKnownOutputPaths()) {
std::map<std::string, std::optional<StorePath>> res;
for (auto & [name, output] : drv->outputs)
res.insert_or_assign(name, output.path(worker.store, drv->name, name));
@ -1233,7 +1248,7 @@ std::map<std::string, std::optional<StorePath>> DerivationGoal::queryPartialDeri
OutputPathMap DerivationGoal::queryDerivationOutputMap()
{
if (!useDerivation || drv->type() != DerivationType::CAFloating) {
if (!useDerivation || drv->type().hasKnownOutputPaths()) {
OutputPathMap res;
for (auto & [name, output] : drv->outputsAndOptPaths(worker.store))
res.insert_or_assign(name, *output.second);

8
src/libstore/build/derivation-goal.hh
View file

@ -61,8 +61,12 @@ struct DerivationGoal : public Goal
bool needRestart = false;
/* Whether to retry substituting the outputs after building the
inputs. */
bool retrySubstitution;
inputs. This is done in case of an incomplete closure. */
bool retrySubstitution = false;
/* Whether we've retried substitution, in which case we won't try
again. */
bool retriedSubstitution = false;
/* The derivation stored at drvPath. */
std::unique_ptr<Derivation> drv;

2
src/libstore/build/goal.cc
View file

@ -28,7 +28,7 @@ void Goal::addWaitee(GoalPtr waitee)
void Goal::waiteeDone(GoalPtr waitee, ExitCode result)
{
assert(waitees.find(waitee) != waitees.end());
assert(waitees.count(waitee));
waitees.erase(waitee);
trace(fmt("waitee '%s' done; %d left", waitee->name, waitees.size()));

13
src/libstore/build/goal.hh
View file

@ -40,21 +40,21 @@ struct Goal : public std::enable_shared_from_this<Goal>
WeakGoals waiters;
/* Number of goals we are/were waiting for that have failed. */
unsigned int nrFailed;
size_t nrFailed = 0;
/* Number of substitution goals we are/were waiting for that
failed because there are no substituters. */
unsigned int nrNoSubstituters;
size_t nrNoSubstituters = 0;
/* Number of substitution goals we are/were waiting for that
failed because they had unsubstitutable references. */
unsigned int nrIncompleteClosure;
size_t nrIncompleteClosure = 0;
/* Name of this goal for debugging purposes. */
std::string name;
/* Whether the goal is finished. */
ExitCode exitCode;
ExitCode exitCode = ecBusy;
/* Build result. */
BuildResult buildResult;
@ -65,10 +65,7 @@ struct Goal : public std::enable_shared_from_this<Goal>
Goal(Worker & worker, DerivedPath path)
: worker(worker)
, buildResult { .path = std::move(path) }
{
nrFailed = nrNoSubstituters = nrIncompleteClosure = 0;
exitCode = ecBusy;
}
{ }
virtual ~Goal()
{

35
src/libstore/build/local-derivation-goal.cc
View file

@ -395,7 +395,7 @@ void LocalDerivationGoal::startBuilder()
else if (settings.sandboxMode == smDisabled)
useChroot = false;
else if (settings.sandboxMode == smRelaxed)
useChroot = !(derivationIsImpure(derivationType)) && !noChroot;
useChroot = !(derivationType.isImpure()) && !noChroot;
}
auto & localStore = getLocalStore();
@ -608,7 +608,7 @@ void LocalDerivationGoal::startBuilder()
"nogroup:x:65534:\n", sandboxGid()));
/* Create /etc/hosts with localhost entry. */
if (!(derivationIsImpure(derivationType)))
if (!(derivationType.isImpure()))
writeFile(chrootRootDir + "/etc/hosts", "127.0.0.1 localhost\n::1 localhost\n");
/* Make the closure of the inputs available in the chroot,
@ -796,7 +796,7 @@ void LocalDerivationGoal::startBuilder()
us.
*/
if (!(derivationIsImpure(derivationType)))
if (!(derivationType.isImpure()))
privateNetwork = true;
userNamespaceSync.create();
@ -1049,7 +1049,7 @@ void LocalDerivationGoal::initEnv()
derivation, tell the builder, so that for instance `fetchurl'
can skip checking the output. On older Nixes, this environment
variable won't be set, so `fetchurl' will do the check. */
if (derivationIsFixed(derivationType)) env["NIX_OUTPUT_CHECKED"] = "1";
if (derivationType.isFixed()) env["NIX_OUTPUT_CHECKED"] = "1";
/* *Only* if this is a fixed-output derivation, propagate the
values of the environment variables specified in the
@ -1060,7 +1060,7 @@ void LocalDerivationGoal::initEnv()
to the builder is generally impure, but the output of
fixed-output derivations is by definition pure (since we
already know the cryptographic hash of the output). */
if (derivationIsImpure(derivationType)) {
if (derivationType.isImpure()) {
for (auto & i : parsedDrv->getStringsAttr("impureEnvVars").value_or(Strings()))
env[i] = getEnv(i).value_or("");
}
@ -1340,6 +1340,12 @@ struct RestrictedStore : public virtual RestrictedStoreConfig, public virtual Lo
next->queryMissing(allowed, willBuild, willSubstitute,
unknown, downloadSize, narSize);
}
virtual std::optional<std::string> getBuildLog(const StorePath & path) override
{ return std::nullopt; }
virtual void addBuildLog(const StorePath & path, std::string_view log) override
{ unsupported("addBuildLog"); }
};
@ -1668,7 +1674,7 @@ void LocalDerivationGoal::runChild()
/* Fixed-output derivations typically need to access the
network, so give them access to /etc/resolv.conf and so
on. */
if (derivationIsImpure(derivationType)) {
if (derivationType.isImpure()) {
// Only use nss functions to resolve hosts and
// services. Don’t use it for anything else that may
// be configured for this system. This limits the
@ -1912,7 +1918,7 @@ void LocalDerivationGoal::runChild()
sandboxProfile += "(import \"sandbox-defaults.sb\")\n";
if (derivationIsImpure(derivationType))
if (derivationType.isImpure())
sandboxProfile += "(import \"sandbox-network.sb\")\n";
/* Add the output paths we'll use at build-time to the chroot */
@ -2272,7 +2278,7 @@ DrvOutputs LocalDerivationGoal::registerOutputs()
return res;
};
auto newInfoFromCA = [&](const DerivationOutputCAFloating outputHash) -> ValidPathInfo {
auto newInfoFromCA = [&](const DerivationOutput::CAFloating outputHash) -> ValidPathInfo {
auto & st = outputStats.at(outputName);
if (outputHash.method == ContentAddressMethod { FileIngestionMethod::Flat } ||
outputHash.method == ContentAddressMethod { TextHashMethod {} })
@ -2340,7 +2346,7 @@ DrvOutputs LocalDerivationGoal::registerOutputs()
ValidPathInfo newInfo = std::visit(overloaded {
[&](const DerivationOutputInputAddressed & output) {
[&](const DerivationOutput::InputAddressed & output) {
/* input-addressed case */
auto requiredFinalPath = output.path;
/* Preemptively add rewrite rule for final hash, as that is
@ -2357,7 +2363,7 @@ DrvOutputs LocalDerivationGoal::registerOutputs()
return newInfo0;
},
[&](const DerivationOutputCAFixed & dof) {
[&](const DerivationOutput::CAFixed & dof) {
auto wanted = getContentAddressHash(dof.ca);
auto newInfo0 = newInfoFromCA(DerivationOutputCAFloating {
@ -2386,17 +2392,17 @@ DrvOutputs LocalDerivationGoal::registerOutputs()
return newInfo0;
},
[&](DerivationOutputCAFloating & dof) {
[&](const DerivationOutput::CAFloating & dof) {
return newInfoFromCA(dof);
},
[&](DerivationOutputDeferred) -> ValidPathInfo {
[&](const DerivationOutput::Deferred &) -> ValidPathInfo {
// No derivation should reach that point without having been
// rewritten first
assert(false);
},
}, output.output);
}, output.raw());
/* FIXME: set proper permissions in restorePath() so
we don't have to do another traversal. */
@ -2610,7 +2616,8 @@ DrvOutputs LocalDerivationGoal::registerOutputs()
signRealisation(thisRealisation);
worker.store.registerDrvOutput(thisRealisation);
}
builtOutputs.emplace(thisRealisation.id, thisRealisation);
if (wantOutput(outputName, wantedOutputs))
builtOutputs.emplace(thisRealisation.id, thisRealisation);
}
return builtOutputs;

10
src/libstore/builtins/buildenv.cc
View file

@ -47,9 +47,9 @@ static void createLinks(State & state, const Path & srcDir, const Path & dstDir,
throw;
}
/* The files below are special-cased to that they don't show up
* in user profiles, either because they are useless, or
* because they would cauase pointless collisions (e.g., each
/* The files below are special-cased to that they don't show
* up in user profiles, either because they are useless, or
* because they would cause pointless collisions (e.g., each
* Python package brings its own
* `$out/lib/pythonX.Y/site-packages/easy-install.pth'.)
*/
@ -57,7 +57,9 @@ static void createLinks(State & state, const Path & srcDir, const Path & dstDir,
hasSuffix(srcFile, "/nix-support") ||
hasSuffix(srcFile, "/perllocal.pod") ||
hasSuffix(srcFile, "/info/dir") ||
hasSuffix(srcFile, "/log"))
hasSuffix(srcFile, "/log") ||
hasSuffix(srcFile, "/manifest.nix") ||
hasSuffix(srcFile, "/manifest.json"))
continue;
else if (S_ISDIR(srcSt.st_mode)) {

19
src/libstore/daemon.cc
View file

@ -3,7 +3,9 @@
#include "worker-protocol.hh"
#include "build-result.hh"
#include "store-api.hh"
#include "store-cast.hh"
#include "gc-store.hh"
#include "log-store.hh"
#include "path-with-outputs.hh"
#include "finally.hh"
#include "archive.hh"
@ -562,6 +564,8 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
BuildMode buildMode = (BuildMode) readInt(from);
logger->startWork();
auto drvType = drv.type();
/* Content-addressed derivations are trustless because their output paths
are verified by their content alone, so any derivation is free to
try to produce such a path.
@ -594,12 +598,12 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
derivations, we throw out the precomputed output paths and just
store the hashes, so there aren't two competing sources of truth an
attacker could exploit. */
if (drv.type() == DerivationType::InputAddressed && !trusted)
if (!(drvType.isCA() || trusted))
throw Error("you are not privileged to build input-addressed derivations");
/* Make sure that the non-input-addressed derivations that got this far
are in fact content-addressed if we don't trust them. */
assert(derivationIsCA(drv.type()) || trusted);
assert(drvType.isCA() || trusted);
/* Recompute the derivation path when we cannot trust the original. */
if (!trusted) {
@ -608,7 +612,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
original not-necessarily-resolved derivation to verify the drv
derivation as adequate claim to the input-addressed output
paths. */
assert(derivationIsCA(drv.type()));
assert(drvType.isCA());
Derivation drv2;
static_cast<BasicDerivation &>(drv2) = drv;
@ -649,7 +653,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
Path path = absPath(readString(from));
logger->startWork();
auto & gcStore = requireGcStore(*store);
auto & gcStore = require<GcStore>(*store);
gcStore.addIndirectRoot(path);
logger->stopWork();
@ -667,7 +671,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
case wopFindRoots: {
logger->startWork();
auto & gcStore = requireGcStore(*store);
auto & gcStore = require<GcStore>(*store);
Roots roots = gcStore.findRoots(!trusted);
logger->stopWork();
@ -699,7 +703,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
logger->startWork();
if (options.ignoreLiveness)
throw Error("you are not allowed to ignore liveness");
auto & gcStore = requireGcStore(*store);
auto & gcStore = require<GcStore>(*store);
gcStore.collectGarbage(options, results);
logger->stopWork();
@ -957,11 +961,12 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
logger->startWork();
if (!trusted)
throw Error("you are not privileged to add logs");
auto & logStore = require<LogStore>(*store);
{
FramedSource source(from);
StringSink sink;
source.drainInto(sink);
store->addBuildLog(path, sink.s);
logStore.addBuildLog(path, sink.s);
}
logger->stopWork();
to << 1;

299
src/libstore/derivations.cc
View file

@ -12,25 +12,25 @@ namespace nix {
std::optional<StorePath> DerivationOutput::path(const Store & store, std::string_view drvName, std::string_view outputName) const
{
return std::visit(overloaded {
[](const DerivationOutputInputAddressed & doi) -> std::optional<StorePath> {
[](const DerivationOutput::InputAddressed & doi) -> std::optional<StorePath> {
return { doi.path };
},
[&](const DerivationOutputCAFixed & dof) -> std::optional<StorePath> {
[&](const DerivationOutput::CAFixed & dof) -> std::optional<StorePath> {
return {
dof.path(store, drvName, outputName)
};
},
[](const DerivationOutputCAFloating & dof) -> std::optional<StorePath> {
[](const DerivationOutput::CAFloating & dof) -> std::optional<StorePath> {
return std::nullopt;
},
[](const DerivationOutputDeferred &) -> std::optional<StorePath> {
[](const DerivationOutput::Deferred &) -> std::optional<StorePath> {
return std::nullopt;
},
}, output);
}, raw());
}
StorePath DerivationOutputCAFixed::path(const Store & store, std::string_view drvName, std::string_view outputName) const {
StorePath DerivationOutput::CAFixed::path(const Store & store, std::string_view drvName, std::string_view outputName) const {
return store.makeFixedOutputPathFromCA(StorePathDescriptor {
.name = outputPathName(drvName, outputName),
.info = ca,
@ -38,47 +38,46 @@ StorePath DerivationOutputCAFixed::path(const Store & store, std::string_view dr
}
bool derivationIsCA(DerivationType dt) {
switch (dt) {
case DerivationType::InputAddressed: return false;
case DerivationType::CAFixed: return true;
case DerivationType::CAFloating: return true;
case DerivationType::DeferredInputAddressed: return false;
};
// Since enums can have non-variant values, but making a `default:` would
// disable exhaustiveness warnings.
assert(false);
bool DerivationType::isCA() const {
/* Normally we do the full `std::visit` to make sure we have
exhaustively handled all variants, but so long as there is a
variant called `ContentAddressed`, it must be the only one for
which `isCA` is true for this to make sense!. */
return std::holds_alternative<ContentAddressed>(raw());
}
bool derivationIsFixed(DerivationType dt) {
switch (dt) {
case DerivationType::InputAddressed: return false;
case DerivationType::CAFixed: return true;
case DerivationType::CAFloating: return false;
case DerivationType::DeferredInputAddressed: return false;
};
assert(false);
bool DerivationType::isFixed() const {
return std::visit(overloaded {
[](const InputAddressed & ia) {
return false;
},
[](const ContentAddressed & ca) {
return ca.fixed;
},
}, raw());
}
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 DerivationType::hasKnownOutputPaths() const {
return std::visit(overloaded {
[](const InputAddressed & ia) {
return !ia.deferred;
},
[](const ContentAddressed & ca) {
return ca.fixed;
},
}, raw());
}
bool derivationIsImpure(DerivationType dt) {
switch (dt) {
case DerivationType::InputAddressed: return false;
case DerivationType::CAFixed: return true;
case DerivationType::CAFloating: return false;
case DerivationType::DeferredInputAddressed: return false;
};
assert(false);
bool DerivationType::isImpure() const {
return std::visit(overloaded {
[](const InputAddressed & ia) {
return false;
},
[](const ContentAddressed & ca) {
return !ca.pure;
},
}, raw());
}
@ -178,34 +177,26 @@ static DerivationOutput parseDerivationOutput(const Store & store,
if (hashS != "") {
validatePath(pathS);
auto hash = Hash::parseNonSRIUnprefixed(hashS, hashType);
return DerivationOutput {
.output = DerivationOutputCAFixed {
// FIXME non-trivial fixed refs set
.ca = contentAddressFromMethodHashAndRefs(
method, std::move(hash), {}),
},
return DerivationOutput::CAFixed {
// FIXME non-trivial fixed refs set
.ca = contentAddressFromMethodHashAndRefs(
method, std::move(hash), {}),
};
} else {
settings.requireExperimentalFeature(Xp::CaDerivations);
assert(pathS == "");
return DerivationOutput {
.output = DerivationOutputCAFloating {
.method = std::move(method),
.hashType = std::move(hashType),
},
return DerivationOutput::CAFloating {
.method = std::move(method),
.hashType = std::move(hashType),
};
}
} else {
if (pathS == "") {
return DerivationOutput {
.output = DerivationOutputDeferred { }
};
return DerivationOutput::Deferred { };
}
validatePath(pathS);
return DerivationOutput {
.output = DerivationOutputInputAddressed {
.path = store.parseStorePath(pathS),
}
return DerivationOutput::InputAddressed {
.path = store.parseStorePath(pathS),
};
}
}
@ -333,27 +324,27 @@ std::string Derivation::unparse(const Store & store, bool maskOutputs,
if (first) first = false; else s += ',';
s += '('; printUnquotedString(s, i.first);
std::visit(overloaded {
[&](const DerivationOutputInputAddressed & doi) {
[&](const DerivationOutput::InputAddressed & doi) {
s += ','; printUnquotedString(s, maskOutputs ? "" : store.printStorePath(doi.path));
s += ','; printUnquotedString(s, "");
s += ','; printUnquotedString(s, "");
},
[&](const DerivationOutputCAFixed & dof) {
[&](const DerivationOutput::CAFixed & dof) {
s += ','; printUnquotedString(s, maskOutputs ? "" : store.printStorePath(dof.path(store, name, i.first)));
s += ','; printUnquotedString(s, printMethodAlgo(dof.ca));
s += ','; printUnquotedString(s, getContentAddressHash(dof.ca).to_string(Base16, false));
},
[&](const DerivationOutputCAFloating & dof) {
[&](const DerivationOutput::CAFloating & dof) {
s += ','; printUnquotedString(s, "");
s += ','; printUnquotedString(s, makeContentAddressingPrefix(dof.method) + printHashType(dof.hashType));
s += ','; printUnquotedString(s, "");
},
[&](const DerivationOutputDeferred &) {
[&](const DerivationOutput::Deferred &) {
s += ','; printUnquotedString(s, "");
s += ','; printUnquotedString(s, "");
s += ','; printUnquotedString(s, "");
}
}, i.second.output);
}, i.second.raw());
s += ')';
}
@ -421,13 +412,13 @@ DerivationType BasicDerivation::type() const
std::optional<HashType> floatingHashType;
for (auto & i : outputs) {
std::visit(overloaded {
[&](const DerivationOutputInputAddressed &) {
[&](const DerivationOutput::InputAddressed &) {
inputAddressedOutputs.insert(i.first);
},
[&](const DerivationOutputCAFixed &) {
[&](const DerivationOutput::CAFixed &) {
fixedCAOutputs.insert(i.first);
},
[&](const DerivationOutputCAFloating & dof) {
[&](const DerivationOutput::CAFloating & dof) {
floatingCAOutputs.insert(i.first);
if (!floatingHashType) {
floatingHashType = dof.hashType;
@ -436,27 +427,37 @@ DerivationType BasicDerivation::type() const
throw Error("All floating outputs must use the same hash type");
}
},
[&](const DerivationOutputDeferred &) {
[&](const DerivationOutput::Deferred &) {
deferredIAOutputs.insert(i.first);
},
}, i.second.output);
}, i.second.raw());
}
if (inputAddressedOutputs.empty() && fixedCAOutputs.empty() && floatingCAOutputs.empty() && deferredIAOutputs.empty()) {
throw Error("Must have at least one output");
} else if (! inputAddressedOutputs.empty() && fixedCAOutputs.empty() && floatingCAOutputs.empty() && deferredIAOutputs.empty()) {
return DerivationType::InputAddressed;
return DerivationType::InputAddressed {
.deferred = false,
};
} else if (inputAddressedOutputs.empty() && ! fixedCAOutputs.empty() && floatingCAOutputs.empty() && deferredIAOutputs.empty()) {
if (fixedCAOutputs.size() > 1)
// FIXME: Experimental feature?
throw Error("Only one fixed output is allowed for now");
if (*fixedCAOutputs.begin() != "out")
throw Error("Single fixed output must be named \"out\"");
return DerivationType::CAFixed;
return DerivationType::ContentAddressed {
.pure = false,
.fixed = true,
};
} else if (inputAddressedOutputs.empty() && fixedCAOutputs.empty() && ! floatingCAOutputs.empty() && deferredIAOutputs.empty()) {
return DerivationType::CAFloating;
return DerivationType::ContentAddressed {
.pure = true,
.fixed = false,
};
} else if (inputAddressedOutputs.empty() && fixedCAOutputs.empty() && floatingCAOutputs.empty() && !deferredIAOutputs.empty()) {
return DerivationType::DeferredInputAddressed;
return DerivationType::InputAddressed {
.deferred = true,
};
} else {
throw Error("Can't mix derivation output types");
}
@ -508,13 +509,13 @@ static const DrvHashModulo pathDerivationModulo(Store & store, const StorePath &
*/
DrvHashModulo hashDerivationModulo(Store & store, const Derivation & drv, bool maskOutputs)
{
bool isDeferred = false;
auto type = drv.type();
/* Return a fixed hash for fixed-output derivations. */
switch (drv.type()) {
case DerivationType::CAFixed: {
if (type.isFixed()) {
std::map<std::string, Hash> outputHashes;
for (const auto & i : drv.outputs) {
auto & dof = std::get<DerivationOutputCAFixed>(i.second.output);
auto & dof = std::get<DerivationOutput::CAFixed>(i.second.raw());
auto hash = hashString(htSHA256, "fixed:out:"
+ printMethodAlgo(dof.ca) + ":"
+ getContentAddressHash(dof.ca).to_string(Base16, false) + ":"
@ -523,33 +524,37 @@ DrvHashModulo hashDerivationModulo(Store & store, const Derivation & drv, bool m
}
return outputHashes;
}
case DerivationType::CAFloating:
isDeferred = true;
break;
case DerivationType::InputAddressed:
break;
case DerivationType::DeferredInputAddressed:
break;
}
auto kind = std::visit(overloaded {
[](const DerivationType::InputAddressed & ia) {
/* This might be a "pesimistically" deferred output, so we don't
"taint" the kind yet. */
return DrvHash::Kind::Regular;
},
[](const DerivationType::ContentAddressed & ca) {
return ca.fixed
? DrvHash::Kind::Regular
: DrvHash::Kind::Deferred;
},
}, drv.type().raw());
/* For other derivations, replace the inputs paths with recursive
calls to this function. */
std::map<std::string, StringSet> inputs2;
for (auto & i : drv.inputDrvs) {
const auto & res = pathDerivationModulo(store, i.first);
for (auto & [drvPath, inputOutputs0] : drv.inputDrvs) {
// Avoid lambda capture restriction with standard / Clang
auto & inputOutputs = inputOutputs0;
const auto & res = pathDerivationModulo(store, drvPath);
std::visit(overloaded {
// Regular non-CA derivation, replace derivation
[&](const Hash & drvHash) {
inputs2.insert_or_assign(drvHash.to_string(Base16, false), i.second);
},
[&](const DeferredHash & deferredHash) {
isDeferred = true;
inputs2.insert_or_assign(deferredHash.hash.to_string(Base16, false), i.second);
[&](const DrvHash & drvHash) {
kind |= drvHash.kind;
inputs2.insert_or_assign(drvHash.hash.to_string(Base16, false), inputOutputs);
},
// CA derivation's output hashes
[&](const CaOutputHashes & outputHashes) {
std::set<std::string> justOut = { "out" };
for (auto & output : i.second) {
for (auto & output : inputOutputs) {
/* Put each one in with a single "out" output.. */
const auto h = outputHashes.at(output);
inputs2.insert_or_assign(
@ -557,15 +562,24 @@ DrvHashModulo hashDerivationModulo(Store & store, const Derivation & drv, bool m
justOut);
}
},
}, res);
}, res.raw());
}
auto hash = hashString(htSHA256, drv.unparse(store, maskOutputs, &inputs2));
if (isDeferred)
return DeferredHash { hash };
else
return hash;
return DrvHash { .hash = hash, .kind = kind };
}
void operator |= (DrvHash::Kind & self, const DrvHash::Kind & other) noexcept
{
switch (other) {
case DrvHash::Kind::Regular:
break;
case DrvHash::Kind::Deferred:
self = other;
break;
}
}
@ -573,20 +587,15 @@ std::map<std::string, Hash> staticOutputHashes(Store & store, const Derivation &
{
std::map<std::string, Hash> res;
std::visit(overloaded {
[&](const Hash & drvHash) {
[&](const DrvHash & drvHash) {
for (auto & outputName : drv.outputNames()) {
res.insert({outputName, drvHash});
}
},
[&](const DeferredHash & deferredHash) {
for (auto & outputName : drv.outputNames()) {
res.insert({outputName, deferredHash.hash});
res.insert({outputName, drvHash.hash});
}
},
[&](const CaOutputHashes & outputHashes) {
res = outputHashes;
},
}, hashDerivationModulo(store, drv, true));
}, hashDerivationModulo(store, drv, true).raw());
return res;
}
@ -667,27 +676,27 @@ void writeDerivation(Sink & out, const Store & store, const BasicDerivation & dr
for (auto & i : drv.outputs) {
out << i.first;
std::visit(overloaded {
[&](const DerivationOutputInputAddressed & doi) {
[&](const DerivationOutput::InputAddressed & doi) {
out << store.printStorePath(doi.path)
<< ""
<< "";
},
[&](const DerivationOutputCAFixed & dof) {
[&](const DerivationOutput::CAFixed & dof) {
out << store.printStorePath(dof.path(store, drv.name, i.first))
<< printMethodAlgo(dof.ca)
<< getContentAddressHash(dof.ca).to_string(Base16, false);
},
[&](const DerivationOutputCAFloating & dof) {
[&](const DerivationOutput::CAFloating & dof) {
out << ""
<< (makeContentAddressingPrefix(dof.method) + printHashType(dof.hashType))
<< "";
},
[&](const DerivationOutputDeferred &) {
[&](const DerivationOutput::Deferred &) {
out << ""
<< ""
<< "";
},
}, i.second.output);
}, i.second.raw());
}
worker_proto::write(store, out, drv.inputSrcs);
out << drv.platform << drv.builder << drv.args;
@ -735,45 +744,63 @@ static void rewriteDerivation(Store & store, BasicDerivation & drv, const String
auto hashModulo = hashDerivationModulo(store, Derivation(drv), true);
for (auto & [outputName, output] : drv.outputs) {
if (std::holds_alternative<DerivationOutputDeferred>(output.output)) {
Hash h = std::get<Hash>(hashModulo);
if (std::holds_alternative<DerivationOutput::Deferred>(output.raw())) {
auto & h = hashModulo.requireNoFixedNonDeferred();
auto outPath = store.makeOutputPath(outputName, h, drv.name);
drv.env[outputName] = store.printStorePath(outPath);
output = DerivationOutput {
.output = DerivationOutputInputAddressed {
.path = std::move(outPath),
},
output = DerivationOutput::InputAddressed {
.path = std::move(outPath),
};
}
}
}
const Hash & DrvHashModulo::requireNoFixedNonDeferred() const {
auto * drvHashOpt = std::get_if<DrvHash>(&raw());
assert(drvHashOpt);
assert(drvHashOpt->kind == DrvHash::Kind::Regular);
return drvHashOpt->hash;
}
static bool tryResolveInput(
Store & store, StorePathSet & inputSrcs, StringMap & inputRewrites,
const StorePath & inputDrv, const StringSet & inputOutputs)
{
auto inputDrvOutputs = store.queryPartialDerivationOutputMap(inputDrv);
auto getOutput = [&](const std::string & outputName) {
auto & actualPathOpt = inputDrvOutputs.at(outputName);
if (!actualPathOpt)
warn("output %s of input %s missing, aborting the resolving",
outputName,
store.printStorePath(inputDrv)
);
return actualPathOpt;
};
for (auto & outputName : inputOutputs) {
auto actualPathOpt = getOutput(outputName);
if (!actualPathOpt) return false;
auto actualPath = *actualPathOpt;
inputRewrites.emplace(
downstreamPlaceholder(store, inputDrv, outputName),
store.printStorePath(actualPath));
inputSrcs.insert(std::move(actualPath));
}
return true;
}
std::optional<BasicDerivation> Derivation::tryResolve(Store & store) {
BasicDerivation resolved { *this };
// Input paths that we'll want to rewrite in the derivation
StringMap inputRewrites;
for (auto & input : inputDrvs) {
auto inputDrvOutputs = store.queryPartialDerivationOutputMap(input.first);
StringSet newOutputNames;
for (auto & outputName : input.second) {
auto actualPathOpt = inputDrvOutputs.at(outputName);
if (!actualPathOpt) {
warn("output %s of input %s missing, aborting the resolving",
outputName,
store.printStorePath(input.first)
);
return std::nullopt;
}
auto actualPath = *actualPathOpt;
inputRewrites.emplace(
downstreamPlaceholder(store, input.first, outputName),
store.printStorePath(actualPath));
resolved.inputSrcs.insert(std::move(actualPath));
}
}
for (auto & [inputDrv, inputOutputs] : inputDrvs)
if (!tryResolveInput(store, resolved.inputSrcs, inputRewrites, inputDrv, inputOutputs))
return std::nullopt;
rewriteDerivation(store, resolved, inputRewrites);

127
src/libstore/derivations.hh
View file

@ -4,6 +4,7 @@
#include "types.hh"
#include "hash.hh"
#include "content-address.hh"
#include "repair-flag.hh"
#include "sync.hh"
#include <map>
@ -44,19 +45,31 @@ struct DerivationOutputCAFloating
*/
struct DerivationOutputDeferred {};
struct DerivationOutput
typedef std::variant<
DerivationOutputInputAddressed,
DerivationOutputCAFixed,
DerivationOutputCAFloating,
DerivationOutputDeferred
> _DerivationOutputRaw;
struct DerivationOutput : _DerivationOutputRaw
{
std::variant<
DerivationOutputInputAddressed,
DerivationOutputCAFixed,
DerivationOutputCAFloating,
DerivationOutputDeferred
> output;
using Raw = _DerivationOutputRaw;
using Raw::Raw;
using InputAddressed = DerivationOutputInputAddressed;
using CAFixed = DerivationOutputCAFixed;
using CAFloating = DerivationOutputCAFloating;
using Deferred = DerivationOutputDeferred;
/* Note, when you use this function you should make sure that you're passing
the right derivation name. When in doubt, you should use the safer
interface provided by BasicDerivation::outputsAndOptPaths */
std::optional<StorePath> path(const Store & store, std::string_view drvName, std::string_view outputName) const;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
};
typedef std::map<std::string, DerivationOutput> DerivationOutputs;
@ -72,30 +85,50 @@ typedef std::map<std::string, std::pair<DerivationOutput, std::optional<StorePat
output IDs we are interested in. */
typedef std::map<StorePath, StringSet> DerivationInputs;
enum struct DerivationType : uint8_t {
InputAddressed,
DeferredInputAddressed,
CAFixed,
CAFloating,
struct DerivationType_InputAddressed {
bool deferred;
};
/* Do the outputs of the derivation have paths calculated from their content,
or from the derivation itself? */
bool derivationIsCA(DerivationType);
struct DerivationType_ContentAddressed {
bool pure;
bool fixed;
};
/* Is the content of the outputs fixed a-priori via a hash? Never true for
non-CA derivations. */
bool derivationIsFixed(DerivationType);
typedef std::variant<
DerivationType_InputAddressed,
DerivationType_ContentAddressed
> _DerivationTypeRaw;
/* Is the derivation impure and needs to access non-deterministic resources, or
pure and can be sandboxed? Note that whether or not we actually sandbox the
derivation is controlled separately. Never true for non-CA derivations. */
bool derivationIsImpure(DerivationType);
struct DerivationType : _DerivationTypeRaw {
using Raw = _DerivationTypeRaw;
using Raw::Raw;
using InputAddressed = DerivationType_InputAddressed;
using ContentAddressed = DerivationType_ContentAddressed;
/* Does the derivation knows its own output paths?
* Only true when there's no floating-ca derivation involved in the closure.
*/
bool derivationHasKnownOutputPaths(DerivationType);
/* Do the outputs of the derivation have paths calculated from their content,
or from the derivation itself? */
bool isCA() const;
/* Is the content of the outputs fixed a-priori via a hash? Never true for
non-CA derivations. */
bool isFixed() const;
/* Is the derivation impure and needs to access non-deterministic resources, or
pure and can be sandboxed? Note that whether or not we actually sandbox the
derivation is controlled separately. Never true for non-CA derivations. */
bool isImpure() const;
/* Does the derivation knows its own output paths?
Only true when there's no floating-ca derivation involved in the
closure, or if fixed output.
*/
bool hasKnownOutputPaths() const;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
};
struct BasicDerivation
{
@ -150,8 +183,6 @@ struct Derivation : BasicDerivation
class Store;
enum RepairFlag : bool { NoRepair = false, Repair = true };
/* Write a derivation to the Nix store, and return its path. */
StorePath writeDerivation(Store & store,
const Derivation & drv,
@ -175,13 +206,43 @@ std::string outputPathName(std::string_view drvName, std::string_view outputName
// whose output hashes are always known since they are fixed up-front.
typedef std::map<std::string, Hash> CaOutputHashes;
struct DeferredHash { Hash hash; };
struct DrvHash {
Hash hash;
enum struct Kind: bool {
// Statically determined derivations.
// This hash will be directly used to compute the output paths
Regular,
// Floating-output derivations (and their reverse dependencies).
Deferred,
};
Kind kind;
};
void operator |= (DrvHash::Kind & self, const DrvHash::Kind & other) noexcept;
typedef std::variant<
Hash, // regular DRV normalized hash
CaOutputHashes, // Fixed-output derivation hashes
DeferredHash // Deferred hashes for floating outputs drvs and their dependencies
> DrvHashModulo;
// Regular normalized derivation hash, and whether it was deferred (because
// an ancestor derivation is a floating content addressed derivation).
DrvHash,
// Fixed-output derivation hashes
CaOutputHashes
> _DrvHashModuloRaw;
struct DrvHashModulo : _DrvHashModuloRaw {
using Raw = _DrvHashModuloRaw;
using Raw::Raw;
/* Get hash, throwing if it is per-output CA hashes or a
deferred Drv hash.
*/
const Hash & requireNoFixedNonDeferred() const;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
};
/* Returns hashes with the details of fixed-output subderivations
expunged.

32
src/libstore/derived-path.cc
View file

@ -1,4 +1,5 @@
#include "derived-path.hh"
#include "derivations.hh"
#include "store-api.hh"
#include <nlohmann/json.hpp>
@ -11,6 +12,21 @@ nlohmann::json DerivedPath::Opaque::toJSON(ref<Store> store) const {
return res;
}
nlohmann::json DerivedPath::Built::toJSON(ref<Store> store) const {
nlohmann::json res;
res["drvPath"] = store->printStorePath(drvPath);
// Fallback for the input-addressed derivation case: We expect to always be
// able to print the output paths, so let’s do it
auto knownOutputs = store->queryPartialDerivationOutputMap(drvPath);
for (const auto& output : outputs) {
if (knownOutputs.at(output))
res["outputs"][output] = store->printStorePath(knownOutputs.at(output).value());
else
res["outputs"][output] = nullptr;
}
return res;
}
nlohmann::json BuiltPath::Built::toJSON(ref<Store> store) const {
nlohmann::json res;
res["drvPath"] = store->printStorePath(drvPath);
@ -35,16 +51,22 @@ StorePathSet BuiltPath::outPaths() const
);
}
nlohmann::json derivedPathsWithHintsToJSON(const BuiltPaths & buildables, ref<Store> store) {
template<typename T>
nlohmann::json stuffToJSON(const std::vector<T> & ts, ref<Store> store) {
auto res = nlohmann::json::array();
for (const BuiltPath & buildable : buildables) {
std::visit([&res, store](const auto & buildable) {
res.push_back(buildable.toJSON(store));
}, buildable.raw());
for (const T & t : ts) {
std::visit([&res, store](const auto & t) {
res.push_back(t.toJSON(store));
}, t.raw());
}
return res;
}
nlohmann::json derivedPathsWithHintsToJSON(const BuiltPaths & buildables, ref<Store> store)
{ return stuffToJSON<BuiltPath>(buildables, store); }
nlohmann::json derivedPathsToJSON(const DerivedPaths & paths, ref<Store> store)
{ return stuffToJSON<DerivedPath>(paths, store); }
std::string DerivedPath::Opaque::to_string(const Store & store) const {
return store.printStorePath(path);

2
src/libstore/derived-path.hh
View file

@ -46,6 +46,7 @@ struct DerivedPathBuilt {
std::string to_string(const Store & store) const;
static DerivedPathBuilt parse(const Store & store, std::string_view);
nlohmann::json toJSON(ref<Store> store) const;
};
using _DerivedPathRaw = std::variant<
@ -120,5 +121,6 @@ typedef std::vector<DerivedPath> DerivedPaths;
typedef std::vector<BuiltPath> BuiltPaths;
nlohmann::json derivedPathsWithHintsToJSON(const BuiltPaths & buildables, ref<Store> store);
nlohmann::json derivedPathsToJSON(const DerivedPaths & , ref<Store> store);
}

13
src/libstore/gc-store.cc
View file

@ -1,13 +0,0 @@
#include "gc-store.hh"
namespace nix {
GcStore & requireGcStore(Store & store)
{
auto * gcStore = dynamic_cast<GcStore *>(&store);
if (!gcStore)
throw UsageError("Garbage collection not supported by this store");
return *gcStore;
}
}

4
src/libstore/gc-store.hh
View file

@ -61,6 +61,8 @@ struct GCResults
struct GcStore : public virtual Store
{
inline static std::string operationName = "Garbage collection";
/* Add an indirect root, which is merely a symlink to `path' from
/nix/var/nix/gcroots/auto/<hash of `path'>. `path' is supposed
to be a symlink to a store path. The garbage collector will
@ -79,6 +81,4 @@ struct GcStore : public virtual Store
virtual void collectGarbage(const GCOptions & options, GCResults & results) = 0;
};
GcStore & requireGcStore(Store & store);
}

6
src/libstore/gc.cc
View file

@ -678,7 +678,8 @@ void LocalStore::collectGarbage(const GCOptions & options, GCResults & results)
alive.insert(start);
try {
StorePathSet closure;
computeFSClosure(*path, closure);
computeFSClosure(*path, closure,
/* flipDirection */ false, gcKeepOutputs, gcKeepDerivations);
for (auto & p : closure)
alive.insert(p);
} catch (InvalidPath &) { }
@ -841,7 +842,8 @@ void LocalStore::collectGarbage(const GCOptions & options, GCResults & results)
if (unlink(path.c_str()) == -1)
throw SysError("deleting '%1%'", path);
results.bytesFreed += st.st_size;
/* Do not accound for deleted file here. Rely on deletePath()
accounting. */
}
struct stat st;

6
src/libstore/local-fs-store.hh
View file

@ -2,6 +2,7 @@
#include "store-api.hh"
#include "gc-store.hh"
#include "log-store.hh"
namespace nix {
@ -24,7 +25,10 @@ struct LocalFSStoreConfig : virtual StoreConfig
"physical path to the Nix store"};
};
class LocalFSStore : public virtual LocalFSStoreConfig, public virtual Store, virtual GcStore
class LocalFSStore : public virtual LocalFSStoreConfig,
public virtual Store,
public virtual GcStore,
public virtual LogStore
{
public:

15
src/libstore/local-store.cc
View file

@ -698,11 +698,11 @@ void LocalStore::checkDerivationOutputs(const StorePath & drvPath, const Derivat
std::optional<Hash> h;
for (auto & i : drv.outputs) {
std::visit(overloaded {
[&](const DerivationOutputInputAddressed & doia) {
[&](const DerivationOutput::InputAddressed & doia) {
if (!h) {
// somewhat expensive so we do lazily
auto temp = hashDerivationModulo(*this, drv, true);
h = std::get<Hash>(temp);
auto h0 = hashDerivationModulo(*this, drv, true);
h = h0.requireNoFixedNonDeferred();
}
StorePath recomputed = makeOutputPath(i.first, *h, drvName);
if (doia.path != recomputed)
@ -710,16 +710,17 @@ void LocalStore::checkDerivationOutputs(const StorePath & drvPath, const Derivat
printStorePath(drvPath), printStorePath(doia.path), printStorePath(recomputed));
envHasRightPath(doia.path, i.first);
},
[&](const DerivationOutputCAFixed & dof) {
[&](const DerivationOutput::CAFixed & dof) {
auto path = dof.path(*this, drvName, i.first);
envHasRightPath(path, i.first);
},
[&](const DerivationOutputCAFloating &) {
[&](const DerivationOutput::CAFloating &) {
/* Nothing to check */
},
[&](const DerivationOutputDeferred &) {
[&](const DerivationOutput::Deferred &) {
/* Nothing to check */
},
}, i.second.output);
}, i.second.raw());
}
}

21
src/libstore/log-store.hh Normal file
View file

@ -0,0 +1,21 @@
#pragma once
#include "store-api.hh"
namespace nix {
struct LogStore : public virtual Store
{
inline static std::string operationName = "Build log storage and retrieval";
/* Return the build log of the specified store path, if available,
or null otherwise. */
virtual std::optional<std::string> getBuildLog(const StorePath & path) = 0;
virtual void addBuildLog(const StorePath & path, std::string_view log) = 0;
static LogStore & require(Store & store);
};
}

83
src/libstore/make-content-addressed.cc Normal file
View file

@ -0,0 +1,83 @@
#include "make-content-addressed.hh"
#include "references.hh"
namespace nix {
std::map<StorePath, StorePath> makeContentAddressed(
Store & srcStore,
Store & dstStore,
const StorePathSet & storePaths)
{
StorePathSet closure;
srcStore.computeFSClosure(storePaths, closure);
auto paths = srcStore.topoSortPaths(closure);
std::reverse(paths.begin(), paths.end());
std::map<StorePath, StorePath> remappings;
for (auto & path : paths) {
auto pathS = srcStore.printStorePath(path);
auto oldInfo = srcStore.queryPathInfo(path);
std::string oldHashPart(path.hashPart());
StringSink sink;
srcStore.narFromPath(path, sink);
StringMap rewrites;
PathReferences<StorePath> refs;
refs.hasSelfReference = oldInfo->hasSelfReference;
for (auto & ref : oldInfo->references) {
auto i = remappings.find(ref);
auto replacement = i != remappings.end() ? i->second : ref;
// FIXME: warn about unremapped paths?
if (replacement != ref) {
rewrites.insert_or_assign(srcStore.printStorePath(ref), srcStore.printStorePath(replacement));
refs.references.insert(std::move(replacement));
}
}
sink.s = rewriteStrings(sink.s, rewrites);
HashModuloSink hashModuloSink(htSHA256, oldHashPart);
hashModuloSink(sink.s);
auto narModuloHash = hashModuloSink.finish().first;
ValidPathInfo info {
dstStore,
StorePathDescriptor {
.name = std::string { path.name() },
.info = FixedOutputInfo {
{
.method = FileIngestionMethod::Recursive,
.hash = narModuloHash,
},
std::move(refs),
},
},
Hash::dummy,
};
printInfo("rewriting '%s' to '%s'", pathS, dstStore.printStorePath(info.path));
StringSink sink2;
RewritingSink rsink2(oldHashPart, std::string(info.path.hashPart()), sink2);
rsink2(sink.s);
rsink2.flush();
info.narHash = hashString(htSHA256, sink2.s);
info.narSize = sink.s.size();
StringSource source(sink2.s);
dstStore.addToStore(info, source);
remappings.insert_or_assign(std::move(path), std::move(info.path));
}
return remappings;
}
}

12
src/libstore/make-content-addressed.hh Normal file
View file

@ -0,0 +1,12 @@
#pragma once
#include "store-api.hh"
namespace nix {
std::map<StorePath, StorePath> makeContentAddressed(
Store & srcStore,
Store & dstStore,
const StorePathSet & storePaths);
}

2
src/libstore/misc.cc
View file

@ -87,7 +87,7 @@ std::optional<ContentAddress> getDerivationCA(const BasicDerivation & drv)
auto out = drv.outputs.find("out");
if (out == drv.outputs.end())
return std::nullopt;
if (auto dof = std::get_if<DerivationOutputCAFixed>(&out->second.output)) {
if (auto dof = std::get_if<DerivationOutput::CAFixed>(&out->second)) {
return std::visit(overloaded {
[&](const TextInfo & ti) -> std::optional<ContentAddress> {
if (!ti.references.empty())

2
src/libstore/parsed-derivations.cc
View file

@ -93,7 +93,7 @@ StringSet ParsedDerivation::getRequiredSystemFeatures() const
StringSet res;
for (auto & i : getStringsAttr("requiredSystemFeatures").value_or(Strings()))
res.insert(i);
if (!derivationHasKnownOutputPaths(drv.type()))
if (!drv.type().hasKnownOutputPaths())
res.insert("ca-derivations");
return res;
}

1
src/libstore/parsed-derivations.hh
View file

@ -1,5 +1,6 @@
#pragma once
#include "derivations.hh"
#include "store-api.hh"
#include <nlohmann/json_fwd.hpp>

6
src/libstore/remote-store.hh
View file

@ -5,6 +5,7 @@
#include "store-api.hh"
#include "gc-store.hh"
#include "log-store.hh"
namespace nix {
@ -30,7 +31,10 @@ struct RemoteStoreConfig : virtual StoreConfig
/* FIXME: RemoteStore is a misnomer - should be something like
DaemonStore. */
class RemoteStore : public virtual RemoteStoreConfig, public virtual Store, public virtual GcStore
class RemoteStore : public virtual RemoteStoreConfig,
public virtual Store,
public virtual GcStore,
public virtual LogStore
{
public:

7
src/libstore/repair-flag.hh Normal file
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@ -0,0 +1,7 @@
#pragma once
namespace nix {
enum RepairFlag : bool { NoRepair = false, Repair = true };
}

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

@ -52,6 +52,10 @@ public:
bool sameMachine() override
{ return false; }
// FIXME extend daemon protocol, move implementation to RemoteStore
std::optional<std::string> getBuildLog(const StorePath & path) override
{ unsupported("getBuildLog"); }
private:
struct Connection : RemoteStore::Connection

1
src/libstore/store-api.cc
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@ -1,6 +1,7 @@
#include "crypto.hh"
#include "fs-accessor.hh"
#include "globals.hh"
#include "derivations.hh"
#include "store-api.hh"
#include "util.hh"
#include "nar-info-disk-cache.hh"

12
src/libstore/store-api.hh
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@ -10,8 +10,8 @@
#include "sync.hh"
#include "globals.hh"
#include "config.hh"
#include "derivations.hh"
#include "path-info.hh"
#include "repair-flag.hh"
#include <atomic>
#include <limits>
@ -62,6 +62,8 @@ MakeError(BadStorePath, Error);
MakeError(InvalidStoreURI, Error);
struct BasicDerivation;
struct Derivation;
class FSAccessor;
class NarInfoDiskCache;
class Store;
@ -601,14 +603,6 @@ public:
*/
StorePathSet exportReferences(const StorePathSet & storePaths, const StorePathSet & inputPaths);
/* Return the build log of the specified store path, if available,
or null otherwise. */
virtual std::optional<std::string> getBuildLog(const StorePath & path)
{ return std::nullopt; }
virtual void addBuildLog(const StorePath & path, std::string_view log)
{ unsupported("addBuildLog"); }
/* Hack to allow long-running processes like hydra-queue-runner to
occasionally flush their path info cache. */
void clearPathInfoCache()

16
src/libstore/store-cast.hh Normal file
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@ -0,0 +1,16 @@
#pragma once
#include "store-api.hh"
namespace nix {
template<typename T>
T & require(Store & store)
{
auto * castedStore = dynamic_cast<T *>(&store);
if (!castedStore)
throw UsageError("%s not supported by store '%s'", T::operationName, store.getUri());
return *castedStore;
}
}