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Merge pull request #1025 from lukegb/hydra-better-errors

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Produce better errors for failing jobsets
This commit is contained in:
Graham Christensen 2021-10-26 12:35:45 -04:00 committed by GitHub
parent dc2bec3272 67ebce8493
commit ef9a9fa481
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 98 additions and 18 deletions
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67
src/hydra-eval-jobs/hydra-eval-jobs.cc
View file

@ -1,6 +1,7 @@
#include <map>
#include <iostream>
#include <thread>
#include <optional>
#include <unordered_map>
#include "shared.hh"
#include "store-api.hh"
@ -442,11 +443,30 @@ int main(int argc, char * * argv)
auto named = job.find("namedConstituents");
if (named == job.end()) continue;
std::unordered_map<std::string, std::string> brokenJobs;
auto getNonBrokenJobOrRecordError = [&brokenJobs, &jobName, &state](
const std::string & childJobName) -> std::optional<nlohmann::json> {
auto childJob = state->jobs.find(childJobName);
if (childJob == state->jobs.end()) {
printError("aggregate job '%s' references non-existent job '%s'", jobName, childJobName);
brokenJobs[childJobName] = "does not exist";
return std::nullopt;
}
if (childJob->find("error") != childJob->end()) {
std::string error = (*childJob)["error"];
printError("aggregate job '%s' references broken job '%s': %s", jobName, childJobName, error);
brokenJobs[childJobName] = error;
return std::nullopt;
}
return *childJob;
};
if (myArgs.dryRun) {
for (std::string jobName2 : *named) {
auto job2 = state->jobs.find(jobName2);
if (job2 == state->jobs.end())
throw Error("aggregate job '%s' references non-existent job '%s'", jobName, jobName2);
auto job2 = getNonBrokenJobOrRecordError(jobName2);
if (!job2) {
continue;
}
std::string drvPath2 = (*job2)["drvPath"];
job["constituents"].push_back(drvPath2);
}
@ -455,31 +475,42 @@ int main(int argc, char * * argv)
auto drv = store->readDerivation(drvPath);
for (std::string jobName2 : *named) {
auto job2 = state->jobs.find(jobName2);
if (job2 == state->jobs.end())
throw Error("aggregate job '%s' references non-existent job '%s'", jobName, jobName2);
auto job2 = getNonBrokenJobOrRecordError(jobName2);
if (!job2) {
continue;
}
auto drvPath2 = store->parseStorePath((std::string) (*job2)["drvPath"]);
auto drv2 = store->readDerivation(drvPath2);
job["constituents"].push_back(store->printStorePath(drvPath2));
drv.inputDrvs[drvPath2] = {drv2.outputs.begin()->first};
}
std::string drvName(drvPath.name());
assert(hasSuffix(drvName, drvExtension));
drvName.resize(drvName.size() - drvExtension.size());
auto h = std::get<Hash>(hashDerivationModulo(*store, drv, true));
auto outPath = store->makeOutputPath("out", h, drvName);
drv.env["out"] = store->printStorePath(outPath);
drv.outputs.insert_or_assign("out", DerivationOutput { .output = DerivationOutputInputAddressed { .path = outPath } });
auto newDrvPath = store->printStorePath(writeDerivation(*store, drv));
if (brokenJobs.empty()) {
std::string drvName(drvPath.name());
assert(hasSuffix(drvName, drvExtension));
drvName.resize(drvName.size() - drvExtension.size());
auto h = std::get<Hash>(hashDerivationModulo(*store, drv, true));
auto outPath = store->makeOutputPath("out", h, drvName);
drv.env["out"] = store->printStorePath(outPath);
drv.outputs.insert_or_assign("out", DerivationOutput { .output = DerivationOutputInputAddressed { .path = outPath } });
auto newDrvPath = store->printStorePath(writeDerivation(*store, drv));
debug("rewrote aggregate derivation %s -> %s", store->printStorePath(drvPath), newDrvPath);
debug("rewrote aggregate derivation %s -> %s", store->printStorePath(drvPath), newDrvPath);
job["drvPath"] = newDrvPath;
job["outputs"]["out"] = store->printStorePath(outPath);
job["drvPath"] = newDrvPath;
job["outputs"]["out"] = store->printStorePath(outPath);
}
}
job.erase("namedConstituents");
if (!brokenJobs.empty()) {
std::stringstream ss;
for (const auto& [jobName, error] : brokenJobs) {
ss << jobName << ": " << error << "\n";
}
job["error"] = ss.str();
}
}
std::cout << state->jobs.dump(2) << "\n";

16
t/jobs/broken-constituent.nix Normal file
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@ -0,0 +1,16 @@
with import ./config.nix;
{
broken = mkDerivation {
name = "broken";
_hydraAggregate = true;
constituents = [
"does-not-exist"
"does-not-evaluate"
];
builder = ./fail.sh;
};
# does-not-exist doesn't exist.
does-not-evaluate = assert false; {};
}

1
t/lib/Setup.pm
View file

@ -148,6 +148,7 @@ sub createJobsetWithOneInput {
sub evalSucceeds {
my ($jobset) = @_;
my ($res, $stdout, $stderr) = captureStdoutStderr(60, ("hydra-eval-jobset", $jobset->project->name, $jobset->name));
$jobset->discard_changes; # refresh from DB
chomp $stdout; chomp $stderr;
print STDERR "Evaluation errors for jobset ".$jobset->project->name.":".$jobset->name.": \n".$jobset->errormsg."\n" if $jobset->errormsg;
print STDERR "STDOUT: $stdout\n" if $stdout ne "";

32
t/queue-runner/constituents.t Normal file
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@ -0,0 +1,32 @@
use feature 'unicode_strings';
use strict;
use warnings;
use Setup;
my %ctx = test_init();
require Hydra::Schema;
require Hydra::Model::DB;
use Test2::V0;
my $db = Hydra::Model::DB->new;
hydra_setup($db);
my $project = $db->resultset('Projects')->create({name => "tests", displayname => "", owner => "root"});
my $jobset = createBaseJobset("broken-constituent", "broken-constituent.nix", $ctx{jobsdir});
ok(evalSucceeds($jobset), "Evaluating jobs/broken-constituent.nix should exit with return code 0");
is(nrQueuedBuildsForJobset($jobset), 0, "Evaluating jobs/broken-constituent.nix should not queue any builds");
like(
$jobset->errormsg,
qr/^does-not-exist: does not exist$/m,
"Evaluating jobs/broken-constituent.nix should log an error for does-not-exist");
like(
$jobset->errormsg,
qr/^does-not-evaluate: error: assertion 'false' failed$/m,
"Evaluating jobs/broken-constituent.nix should log an error for does-not-evaluate");
done_testing;