mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-26 15:56:18 +02:00
* Negative caching, i.e. caching of build failures. Disabled by
default. This is mostly useful for Hydra.
This commit is contained in:
parent
7024a1ef07
commit
92f525ecf4
7 changed files with 140 additions and 7 deletions
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@ -154,6 +154,22 @@
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#build-chroot-dirs = /dev /dev/pts /proc
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#build-chroot-dirs = /dev /dev/pts /proc
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### Option `build-cache-failure'
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#
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# If this option is enabled, Nix will do negative caching; that is, it
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# will remember failed builds, and won't attempt to try to build them
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# again if you ask for it. Negative caching is disabled by default
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# because Nix cannot distinguish between permanent build errors (e.g.,
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# a syntax error in a source file) and transient build errors (e.g., a
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# full disk), as they both cause the builder to return a non-zero exit
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# code. You can clear the cache by doing `rm -f
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# /nix/var/nix/db/failed/*'.
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#
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# Example:
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# build-cache-failure = true
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#build-cache-failure = false
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### Option `system'
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### Option `system'
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#
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#
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# This option specifies the canonical Nix system name of the current
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# This option specifies the canonical Nix system name of the current
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@ -209,6 +209,8 @@ private:
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public:
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public:
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bool cacheFailure;
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LocalStore & store;
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LocalStore & store;
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Worker(LocalStore & store);
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Worker(LocalStore & store);
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@ -668,6 +670,9 @@ private:
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/* RAII object to delete the chroot directory. */
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/* RAII object to delete the chroot directory. */
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boost::shared_ptr<AutoDelete> autoDelChroot;
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boost::shared_ptr<AutoDelete> autoDelChroot;
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/* Whether this is a fixed-output derivation. */
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bool fixedOutput;
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typedef void (DerivationGoal::*GoalState)();
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typedef void (DerivationGoal::*GoalState)();
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GoalState state;
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GoalState state;
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@ -725,6 +730,9 @@ private:
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/* Return the set of (in)valid paths. */
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/* Return the set of (in)valid paths. */
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PathSet checkPathValidity(bool returnValid);
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PathSet checkPathValidity(bool returnValid);
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/* Abort the goal if `path' failed to build. */
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bool pathFailed(const Path & path);
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/* Forcibly kill the child process, if any. */
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/* Forcibly kill the child process, if any. */
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void killChild();
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void killChild();
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};
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};
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@ -836,6 +844,11 @@ void DerivationGoal::haveDerivation()
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return;
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return;
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}
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}
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/* Check whether any output previously failed to build. If so,
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don't bother. */
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foreach (PathSet::iterator, i, invalidOutputs)
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if (pathFailed(*i)) return;
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/* We are first going to try to create the invalid output paths
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/* We are first going to try to create the invalid output paths
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through substitutes. If that doesn't work, we'll build
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through substitutes. If that doesn't work, we'll build
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them. */
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them. */
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@ -1008,6 +1021,12 @@ void DerivationGoal::tryToBuild()
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}
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}
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}
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}
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/* Check again whether any output previously failed to build,
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because some other process may have tried and failed before we
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acquired the lock. */
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foreach (DerivationOutputs::iterator, i, drv.outputs)
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if (pathFailed(i->second.path)) return;
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/* Is the build hook willing to accept this job? */
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/* Is the build hook willing to accept this job? */
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usingBuildHook = true;
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usingBuildHook = true;
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switch (tryBuildHook()) {
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switch (tryBuildHook()) {
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@ -1093,9 +1112,7 @@ void DerivationGoal::buildDone()
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/* Some cleanup per path. We do this here and not in
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/* Some cleanup per path. We do this here and not in
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computeClosure() for convenience when the build has
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computeClosure() for convenience when the build has
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failed. */
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failed. */
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for (DerivationOutputs::iterator i = drv.outputs.begin();
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foreach (DerivationOutputs::iterator, i, drv.outputs) {
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i != drv.outputs.end(); ++i)
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{
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Path path = i->second.path;
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Path path = i->second.path;
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if (useChroot && pathExists(chrootRootDir + path)) {
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if (useChroot && pathExists(chrootRootDir + path)) {
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@ -1147,6 +1164,7 @@ void DerivationGoal::buildDone()
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printMsg(lvlError, e.msg());
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printMsg(lvlError, e.msg());
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outputLocks.unlock();
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outputLocks.unlock();
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buildUser.release();
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buildUser.release();
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if (printBuildTrace) {
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if (printBuildTrace) {
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/* When using a build hook, the hook will return a
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/* When using a build hook, the hook will return a
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remote build failure using exit code 100. Anything
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remote build failure using exit code 100. Anything
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@ -1158,6 +1176,16 @@ void DerivationGoal::buildDone()
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printMsg(lvlError, format("@ build-failed %1% %2% %3% %4%")
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printMsg(lvlError, format("@ build-failed %1% %2% %3% %4%")
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% drvPath % drv.outputs["out"].path % 1 % e.msg());
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% drvPath % drv.outputs["out"].path % 1 % e.msg());
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}
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}
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/* Register the outputs of this build as "failed" so we won't
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try to build them again (negative caching). However, don't
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do this for fixed-output derivations, since they're likely
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to fail for transient reasons (e.g., fetchurl not being
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able to access the network). */
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if (worker.cacheFailure && !fixedOutput)
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foreach (DerivationOutputs::iterator, i, drv.outputs)
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worker.store.registerFailedPath(i->second.path);
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amDone(ecFailed);
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amDone(ecFailed);
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return;
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return;
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}
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}
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@ -1451,9 +1479,8 @@ void DerivationGoal::startBuilder()
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derivation, tell the builder, so that for instance `fetchurl'
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derivation, tell the builder, so that for instance `fetchurl'
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can skip checking the output. On older Nixes, this environment
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can skip checking the output. On older Nixes, this environment
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variable won't be set, so `fetchurl' will do the check. */
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variable won't be set, so `fetchurl' will do the check. */
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bool fixedOutput = true;
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fixedOutput = true;
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for (DerivationOutputs::iterator i = drv.outputs.begin();
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foreach (DerivationOutputs::iterator, i, drv.outputs)
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i != drv.outputs.end(); ++i)
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if (i->second.hash == "") fixedOutput = false;
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if (i->second.hash == "") fixedOutput = false;
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if (fixedOutput)
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if (fixedOutput)
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env["NIX_OUTPUT_CHECKED"] = "1";
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env["NIX_OUTPUT_CHECKED"] = "1";
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@ -2035,6 +2062,22 @@ PathSet DerivationGoal::checkPathValidity(bool returnValid)
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}
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}
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bool DerivationGoal::pathFailed(const Path & path)
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{
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if (!worker.cacheFailure) return false;
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if (!worker.store.hasPathFailed(path)) return false;
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printMsg(lvlError, format("builder for `%1%' failed previously (cached)") % path);
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if (printBuildTrace)
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printMsg(lvlError, format("@ build-failed %1% %2% cached") % drvPath % path);
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amDone(ecFailed);
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return true;
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}
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//////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////
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@ -2392,6 +2435,7 @@ Worker::Worker(LocalStore & store)
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working = true;
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working = true;
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nrChildren = 0;
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nrChildren = 0;
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lastWokenUp = 0;
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lastWokenUp = 0;
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cacheFailure = queryBoolSetting("build-cache-failure", false);
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}
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}
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@ -65,6 +65,7 @@ LocalStore::LocalStore()
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createDirs(nixDBPath + "/info");
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createDirs(nixDBPath + "/info");
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createDirs(nixDBPath + "/referrer");
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createDirs(nixDBPath + "/referrer");
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createDirs(nixDBPath + "/failed");
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int curSchema = getSchema();
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int curSchema = getSchema();
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if (curSchema > nixSchemaVersion)
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if (curSchema > nixSchemaVersion)
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@ -196,6 +197,13 @@ static Path referrersFileFor(const Path & path)
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}
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}
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static Path failedFileFor(const Path & path)
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{
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string baseName = baseNameOf(path);
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return (format("%1%/failed/%2%") % nixDBPath % baseName).str();
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}
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static Path tmpFileForAtomicUpdate(const Path & path)
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static Path tmpFileForAtomicUpdate(const Path & path)
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{
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{
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return (format("%1%/.%2%.%3%") % dirOf(path) % getpid() % baseNameOf(path)).str();
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return (format("%1%/.%2%.%3%") % dirOf(path) % getpid() % baseNameOf(path)).str();
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@ -335,6 +343,20 @@ void LocalStore::registerValidPath(const ValidPathInfo & info, bool ignoreValidi
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}
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}
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void LocalStore::registerFailedPath(const Path & path)
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{
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/* Write an empty file in the .../failed directory to denote the
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failure of the builder for `path'. */
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writeFile(failedFileFor(path), "");
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}
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bool LocalStore::hasPathFailed(const Path & path)
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{
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return pathExists(failedFileFor(path));
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}
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Hash parseHashField(const Path & path, const string & s)
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Hash parseHashField(const Path & path, const string & s)
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{
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{
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string::size_type colon = s.find(':');
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string::size_type colon = s.find(':');
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void registerValidPaths(const ValidPathInfos & infos);
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void registerValidPaths(const ValidPathInfos & infos);
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/* Register that the build of a derivation with output `path' has
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failed. */
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void registerFailedPath(const Path & path);
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/* Query whether `path' previously failed to build. */
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bool hasPathFailed(const Path & path);
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private:
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private:
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Path schemaPath;
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Path schemaPath;
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@ -7,7 +7,7 @@ TESTS = init.sh hash.sh lang.sh add.sh simple.sh dependencies.sh \
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fallback.sh nix-push.sh gc.sh gc-concurrent.sh verify.sh nix-pull.sh \
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fallback.sh nix-push.sh gc.sh gc-concurrent.sh verify.sh nix-pull.sh \
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referrers.sh user-envs.sh logging.sh nix-build.sh misc.sh fixed.sh \
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referrers.sh user-envs.sh logging.sh nix-build.sh misc.sh fixed.sh \
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gc-runtime.sh install-package.sh check-refs.sh filter-source.sh \
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gc-runtime.sh install-package.sh check-refs.sh filter-source.sh \
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remote-store.sh export.sh export-graph.sh
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remote-store.sh export.sh export-graph.sh negative-caching.sh
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XFAIL_TESTS =
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XFAIL_TESTS =
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@ -30,5 +30,6 @@ EXTRA_DIST = $(TESTS) \
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check-refs.nix \
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check-refs.nix \
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filter-source.nix \
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filter-source.nix \
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export-graph.nix \
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export-graph.nix \
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negative-caching.nix \
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$(wildcard lang/*.nix) $(wildcard lang/*.exp) $(wildcard lang/*.exp.xml) $(wildcard lang/*.flags) \
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$(wildcard lang/*.nix) $(wildcard lang/*.exp) $(wildcard lang/*.exp.xml) $(wildcard lang/*.flags) \
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common.sh.in
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common.sh.in
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21
tests/negative-caching.nix
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21
tests/negative-caching.nix
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@ -0,0 +1,21 @@
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with import ./config.nix;
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rec {
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fail = mkDerivation {
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name = "fail";
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builder = builtins.toFile "builder.sh" "echo FAIL; exit 1";
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};
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succeed = mkDerivation {
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name = "succeed";
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builder = builtins.toFile "builder.sh" "echo SUCCEED; mkdir $out";
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};
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depOnFail = mkDerivation {
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name = "dep-on-fail";
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builder = builtins.toFile "builder.sh" "echo URGH; mkdir $out";
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inputs = [fail succeed];
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};
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}
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22
tests/negative-caching.sh
Normal file
22
tests/negative-caching.sh
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@ -0,0 +1,22 @@
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source common.sh
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clearStore
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set +e
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opts="--option build-cache-failure true --print-build-trace"
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# This build should fail, and the failure should be cached.
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log=$($nixbuild $opts negative-caching.nix -A fail 2>&1) && fail "should fail"
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echo "$log" | grep -q "@ build-failed" || fail "no build-failed trace"
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# Do it again. The build shouldn't be tried again.
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log=$($nixbuild $opts negative-caching.nix -A fail 2>&1) && fail "should fail"
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echo "$log" | grep -q "FAIL" && fail "failed build not cached"
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echo "$log" | grep -q "@ build-failed .* cached" || fail "trace doesn't say cached"
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# Check that --keep-going works properly with cached failures.
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log=$($nixbuild $opts --keep-going negative-caching.nix -A depOnFail 2>&1) && fail "should fail"
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echo "$log" | grep -q "FAIL" && fail "failed build not cached (2)"
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echo "$log" | grep -q "@ build-failed .* cached" || fail "trace doesn't say cached (2)"
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echo "$log" | grep -q "@ build-succeeded .*-succeed" || fail "didn't keep going"
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