From 2eec2f765a86b8954f3a74ff148bc70a2d32be27 Mon Sep 17 00:00:00 2001 From: regnat Date: Mon, 13 Dec 2021 16:58:43 +0100 Subject: [PATCH] Add a crude tracing mechansim for the build results MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a `_NIX_TRACE_BUILT_OUTPUTS` environment variable that can be set to a filename in which the result of each build will be logged. This is intentionally crude and undocumented as it’s only meant to be a temporary thing to assess the usefulness of CA derivations. Any other use would need a cleaner re-implementation first. --- src/libstore/build/derivation-goal.cc | 8 ++++++++ src/libstore/store-api.hh | 23 +++++++++++++++++++++++ 2 files changed, 31 insertions(+) diff --git a/src/libstore/build/derivation-goal.cc b/src/libstore/build/derivation-goal.cc index a713d7222..c6ab5c3d1 100644 --- a/src/libstore/build/derivation-goal.cc +++ b/src/libstore/build/derivation-goal.cc @@ -17,6 +17,7 @@ #include #include +#include #include #include #include @@ -1337,6 +1338,13 @@ void DerivationGoal::done(BuildResult::Status status, std::optional ex) } worker.updateProgress(); + + auto traceBuiltOutputsFile = getEnv("_NIX_TRACE_BUILT_OUTPUTS").value_or(""); + if (traceBuiltOutputsFile != "") { + std::fstream fs; + fs.open(traceBuiltOutputsFile, std::fstream::out); + fs << worker.store.printStorePath(drvPath) << "\t" << result.toString() << std::endl; + } } diff --git a/src/libstore/store-api.hh b/src/libstore/store-api.hh index 3a385b293..3dd446f23 100644 --- a/src/libstore/store-api.hh +++ b/src/libstore/store-api.hh @@ -155,6 +155,29 @@ struct BuildResult } status = MiscFailure; std::string errorMsg; + std::string toString() const { + auto strStatus = [&]() { + switch (status) { + case Built: return "Built"; + case Substituted: return "Substituted"; + case AlreadyValid: return "AlreadyValid"; + case PermanentFailure: return "PermanentFailure"; + case InputRejected: return "InputRejected"; + case OutputRejected: return "OutputRejected"; + case TransientFailure: return "TransientFailure"; + case CachedFailure: return "CachedFailure"; + case TimedOut: return "TimedOut"; + case MiscFailure: return "MiscFailure"; + case DependencyFailed: return "DependencyFailed"; + case LogLimitExceeded: return "LogLimitExceeded"; + case NotDeterministic: return "NotDeterministic"; + case ResolvesToAlreadyValid: return "ResolvesToAlreadyValid"; + default: return "Unknown"; + }; + }(); + return strStatus + ((errorMsg == "") ? "" : " : " + errorMsg); + } + /* How many times this build was performed. */ unsigned int timesBuilt = 0;