hydra/src/script/hydra_build.pl
Eelco Dolstra bf1480cc25 * Doh.
2009-03-16 17:46:46 +00:00

321 lines
11 KiB
Perl
Executable file

#! /var/run/current-system/sw/bin/perl -w
use strict;
use File::Basename;
use File::stat;
use Hydra::Schema;
use Hydra::Helper::Nix;
my $db = openHydraDB;
sub doBuild {
my ($build) = @_;
my $drvPath = $build->drvpath;
my $outPath = $build->outpath;
my $isCachedBuild = 1;
my $outputCreated = 1; # i.e., the Nix build succeeded (but it could be a positive failure)
my $startTime = 0;
my $stopTime = 0;
my $buildStatus = 0; # = succeeded
my $errormsg = undef;
my $failedDepBuild;
my $failedDepStepNr;
if (!isValidPath($outPath)) {
$isCachedBuild = 0;
# Check whether a dependency of this build has previously
# failed. If so, don't even bother to build, since it will
# fail anyway. !!! Once Nix has negative caching, this code
# can go.
my @drvDeps = split '\n', `nix-store --query --requisites --include-outputs $drvPath`;
die "cannot query dependencies of `$drvPath': $?" if $? != 0;
@drvDeps = grep { $_ =~ /.drv$/ } @drvDeps;
my @drvOutputs = split '\n', `nix-store --query --outputs @drvDeps`;
die "cannot query outputs of the dependencies of `$drvPath': $?" if $? != 0;
foreach my $dep (@drvOutputs) {
# !!! This checks more than it has to, namely
# build-time-only dependencies of dependencies (which
# don't need to be built). However, it shouldn't matter:
# if the dependency was built, then presumably *its*
# dependencies were built as well.
# !!! should disregard fixed-output derivations (?)
if (!isValidPath($dep)) {
my ($step) = $db->resultset('BuildSteps')->search(
{outPath => $dep}, {rows => 1, order_by => "stopTime DESC", type => 0, busy => 0});
if ($step && $step->status != 0) {
$buildStatus = 5;
$failedDepBuild = $step->build->id;
$failedDepStepNr = $step->stepnr;
goto done;
}
}
}
# Do the build.
$startTime = time();
my $thisBuildFailed = 0;
my $someBuildFailed = 0;
# Run Nix to perform the build, and monitor the stderr output
# to get notifications about specific build steps, the
# associated log files, etc.
my $cmd = "nix-store --max-silent-time 1800 --keep-going --no-build-output " .
"--log-type flat --print-build-trace --realise $drvPath " .
"--add-root " . gcRootFor $outPath . " 2>&1";
my $buildStepNr = $build->buildsteps->find({},
{select => {max => 'stepnr + 1'}, as => ['max']})->get_column('max') || 1;
my %buildSteps;
open OUT, "$cmd |" or die;
while (<OUT>) {
$errormsg .= $_;
unless (/^@\s+/) {
print STDERR "$_";
next;
}
if (/^@\s+build-started\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)$/) {
my $drvPathStep = $1;
$db->txn_do(sub {
$build->buildsteps->create(
{ stepnr => ($buildSteps{$drvPathStep} = $buildStepNr++)
, type => 0 # = build
, drvpath => $drvPathStep
, outpath => $2
, logfile => $4
, busy => 1
, starttime => time
});
});
}
elsif (/^@\s+build-succeeded\s+(\S+)\s+(\S+)$/) {
my $drvPathStep = $1;
$db->txn_do(sub {
my $step = $build->buildsteps->find({stepnr => $buildSteps{$drvPathStep}}) or die;
$step->update({busy => 0, status => 0, stoptime => time});
});
}
elsif (/^@\s+build-failed\s+(\S+)\s+(\S+)\s+(\S+)\s+(.*)$/) {
my $drvPathStep = $1;
$someBuildFailed = 1;
$thisBuildFailed = 1 if $drvPath eq $drvPathStep;
$db->txn_do(sub {
if ($buildSteps{$drvPathStep}) {
my $step = $build->buildsteps->find({stepnr => $buildSteps{$drvPathStep}}) or die;
$step->update({busy => 0, status => 1, errormsg => $4, stoptime => time});
} else {
$build->buildsteps->create(
{ stepnr => $buildStepNr++
, type => 0 # = build
, drvpath => $drvPathStep
, outpath => $2
, logfile => $4
, busy => 0
, status => 1
, starttime => time
, stoptime => time
, errormsg => $4
});
}
});
}
elsif (/^@\s+substituter-started\s+(\S+)\s+(\S+)$/) {
my $outPath = $1;
$db->txn_do(sub {
$build->buildsteps->create(
{ stepnr => ($buildSteps{$outPath} = $buildStepNr++)
, type => 1 # = substitution
, outpath => $1
, busy => 1
, starttime => time
});
});
}
elsif (/^@\s+substituter-succeeded\s+(\S+)$/) {
my $outPath = $1;
$db->txn_do(sub {
my $step = $build->buildsteps->find({stepnr => $buildSteps{$outPath}}) or die;
$step->update({busy => 0, status => 0, stoptime => time});
});
}
elsif (/^@\s+substituter-failed\s+(\S+)\s+(\S+)\s+(\S+)$/) {
my $outPath = $1;
$db->txn_do(sub {
my $step = $build->buildsteps->find({stepnr => $buildSteps{$outPath}}) or die;
$step->update({busy => 0, status => 1, errormsg => $3, stoptime => time});
});
}
else {
print STDERR "unknown Nix trace message: $_";
}
}
close OUT;
my $res = $?;
$stopTime = time();
if ($res != 0) {
if ($thisBuildFailed) { $buildStatus = 1; }
elsif ($someBuildFailed) { $buildStatus = 2; }
else { $buildStatus = 3; }
}
# Only store the output of running Nix if we have a miscellaneous error.
$errormsg = undef unless $buildStatus == 3;
}
done:
$db->txn_do(sub {
$build->update({finished => 1, timestamp => time});
my $logPath = "/nix/var/log/nix/drvs/" . basename $drvPath;
$logPath = undef unless -e $logPath;
my $releaseName;
if (-e "$outPath/nix-support/hydra-release-name") {
open FILE, "$outPath/nix-support/hydra-release-name" or die;
$releaseName = <FILE>;
chomp $releaseName;
close FILE;
}
$db->resultset('BuildResultInfo')->create(
{ id => $build->id
, iscachedbuild => $isCachedBuild
, buildstatus => $buildStatus
, starttime => $startTime
, stoptime => $stopTime
, logfile => $logPath
, errormsg => $errormsg
, releasename => $releaseName
, faileddepbuild => $failedDepBuild
, faileddepstepnr => $failedDepStepNr
});
if ($buildStatus == 0) {
my $productnr = 1;
if (-e "$outPath/nix-support/hydra-build-products") {
open LIST, "$outPath/nix-support/hydra-build-products" or die;
while (<LIST>) {
/^([\w\-]+)\s+([\w\-]+)\s+(\S+)(\s+(\S+))?$/ or next;
my $type = $1;
my $subtype = $2 eq "none" ? "" : $2;
my $path = $3;
my $defaultPath = $5;
next unless -e $path;
my $fileSize, my $sha1, my $sha256;
# !!! validate $path, $defaultPath
if (-f $path) {
my $st = stat($path) or die "cannot stat $path: $!";
$fileSize = $st->size;
$sha1 = `nix-hash --flat --type sha1 $path`
or die "cannot hash $path: $?";;
chomp $sha1;
$sha256 = `nix-hash --flat --type sha256 $path`
or die "cannot hash $path: $?";;
chomp $sha256;
}
my $name = $path eq $outPath ? "" : basename $path;
$db->resultset('BuildProducts')->create(
{ build => $build->id
, productnr => $productnr++
, type => $type
, subtype => $subtype
, path => $path
, filesize => $fileSize
, sha1hash => $sha1
, sha256hash => $sha256
, name => $name
, defaultpath => $defaultPath
});
}
close LIST;
}
else {
$db->resultset('BuildProducts')->create(
{ build => $build->id
, productnr => $productnr++
, type => "nix-build"
, subtype => ""
, path => $outPath
, name => $build->nixname
});
}
}
$build->schedulingInfo->delete;
});
}
my $buildId = $ARGV[0] or die;
print STDERR "performing build $buildId\n";
# Lock the build. If necessary, steal the lock from the parent
# process (runner.pl). This is so that if the runner dies, the
# children (i.e. the build.pl instances) can continue to run and won't
# have the lock taken away.
my $build;
$db->txn_do(sub {
$build = $db->resultset('Builds')->find($buildId);
die "build $buildId doesn't exist" unless defined $build;
die "build $buildId already done" if defined $build->resultInfo;
if ($build->schedulingInfo->busy != 0 && $build->schedulingInfo->locker != getppid) {
die "build $buildId is already being built";
}
$build->schedulingInfo->update({busy => 1, locker => $$});
$build->buildsteps->search({busy => 1})->delete_all;
$build->buildproducts->delete_all;
});
die unless $build;
# Do the build. If it throws an error, unlock the build so that it
# can be retried.
eval {
doBuild $build;
print "done\n";
};
if ($@) {
warn $@;
$db->txn_do(sub {
$build->schedulingInfo->update({busy => 0, locker => $$});
});
}