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* Generate manifests on demand. Next step: generate NAR archives on

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demand, then we can have channel support and one-click installs in
  Hydra.
This commit is contained in:
Eelco Dolstra 2009-02-13 17:35:54 +00:00
parent 95f2362c11
commit 5a49cc5916
2 changed files with 67 additions and 0 deletions
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11
src/Hydra/lib/Hydra/Controller/Root.pm
View file

@ -707,6 +707,17 @@ sub closure :Local {
}
sub manifest :Local {
my ($self, $c, $buildId) = @_;
my $build = getBuild($c, $buildId);
return error($c, "Build with ID $buildId doesn't exist.") if !defined $build;
$c->stash->{current_view} = 'Hydra::View::NixManifest';
$c->stash->{storePath} = $build->outpath;
}
sub end : ActionClass('RenderView') {}

56
src/Hydra/lib/Hydra/View/NixManifest.pm Normal file
View file

@ -0,0 +1,56 @@
package Hydra::View::NixManifest;
use strict;
use base qw/Catalyst::View/;
use IO::Pipe;
use IPC::Run;
use POSIX qw(dup2);
sub captureStdoutStderr {
my $stdin = ""; my $stdout; my $stderr;
my $res = IPC::Run::run(\@_, \$stdin, \$stdout, \$stderr);
return ($res, $stdout, $stderr);
}
sub process {
my ($self, $c) = @_;
my $storePath = $c->stash->{storePath};
$c->response->content_type('text/x-nix-manifest');
my @paths = split '\n', `nix-store --query --requisites $storePath`
or die "cannot query dependencies of `$storePath': $?";
my $manifest =
"version {\n" .
" ManifestVersion: 3\n" .
"}\n";
foreach my $path (@paths) {
my ($res, $out, $err) = captureStdoutStderr(qw(nix-store --query --references), $path);
die "cannot query references of `$path':\n$err" unless $res;
my @refs = split '\n', $out;
my $hash = `nix-store --query --hash $path`
or die "cannot query hash of `$path': $?";
chomp $hash;
my $url = $c->uri_for('/nar' . $path);
$manifest .=
"{\n" .
" StorePath: $path\n" .
" NarURL: $url\n" .
" References: @refs\n" .
" Hash: $hash\n" .
"}\n";
}
$c->response->body($manifest);
return 1;
}
1;