forked from lix-project/hydra
103 lines
2.7 KiB
Perl
Executable file
103 lines
2.7 KiB
Perl
Executable file
#! /var/run/current-system/sw/bin/perl -w
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use strict;
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use File::Path;
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use File::Basename;
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use Hydra::Schema;
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use Hydra::Helper::Nix;
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use POSIX qw(strftime);
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my $db = openHydraDB;
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die unless defined $ENV{LOGNAME};
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my $gcRootsDir = "/nix/var/nix/gcroots/per-user/$ENV{LOGNAME}/hydra-roots";
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my %roots;
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sub registerRoot {
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my ($path) = @_;
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#print "$path\n";
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mkpath($gcRootsDir) if !-e $gcRootsDir;
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my $link = "$gcRootsDir/" . basename $path;
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if (!-l $link) {
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symlink($path, $link)
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or die "cannot create symlink in $gcRootsDir to $path";
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}
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$roots{$path} = 1;
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}
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sub keepBuild {
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my ($build) = @_;
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print "keeping build ", $build->id, " (",
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strftime("%Y-%m-%d %H:%M:%S", localtime($build->timestamp)), ")\n";
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if (isValidPath($build->outpath)) {
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registerRoot $build->outpath;
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} else {
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print STDERR "warning: output ", $build->outpath, " has disappeared\n";
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}
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}
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# Go over all jobs in all projects.
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foreach my $project ($db->resultset('Projects')->all) {
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foreach my $job ($project->builds->search({},
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{select => [{distinct => 'attrname'}], as => ['attrname']}))
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{
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print "*** looking for builds to keep in ", $project->name, ":", $job->attrname, "\n";
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# Keep the N most recent successful builds for each job and
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# platform.
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my @recentBuilds = $project->builds->search(
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{ attrname => $job->attrname
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, finished => 1
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, buildStatus => 0 # == success
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},
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{ join => 'resultInfo'
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, order_by => 'timestamp DESC'
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, rows => 3 # !!! should make this configurable
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});
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keepBuild $_ foreach @recentBuilds;
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}
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}
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# Keep all builds that have been marked as "keep".
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print "*** looking for kept builds\n";
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my @buildsToKeep = $db->resultset('Builds')->search({finished => 1, keep => 1}, {join => 'resultInfo'});
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keepBuild $_ foreach @buildsToKeep;
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# For scheduled builds, we register the derivation as a GC root.
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print "*** looking for scheduled builds\n";
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foreach my $build ($db->resultset('Builds')->search({finished => 0}, {join => 'schedulingInfo'})) {
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if (isValidPath($build->drvpath)) {
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registerRoot $build->drvpath;
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} else {
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print STDERR "warning: derivation ", $build->drvpath, " has disappeared\n";
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}
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}
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# Remove existing roots that are no longer wanted. !!! racy
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opendir DIR, $gcRootsDir or die;
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foreach my $link (readdir DIR) {
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next if !-l "$gcRootsDir/$link";
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my $path = readlink "$gcRootsDir/$link" or die;
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if (!defined $roots{$path}) {
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print STDERR "removing root $path\n";
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unlink "$gcRootsDir/$link" or die "cannot remove $gcRootsDir/$link";
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}
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}
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closedir DIR;
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