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#!/usr/bin/env perl
# This script greps the JSON files for the buildbots on
# the LLVM official build master by name and prints an
# HTML page with the links to the bots and the status.
#
# Multiple masters can be used, as well as multiple groups of bots
# and multiple bots per group, all in a json file. See linaro.json
# in this repository to have an idea how the config file is.
#
# Module JSON needs to be installed, either from cpan or packages.
push @INC, `dirname $0`;
use strict;
use warnings;
# Core modules
use File::Temp qw/tempfile/;
use File::Copy;
# This is not part of core, but you really *need* it.
use JSON;
# This can be replaced by `wget/curl`
use LWP;
use LWP::UserAgent;
# We don't have DateTime everywhere...
my $date = `date`;
# DEBUG
my $DEBUG = 0;
######################################################### Initialisation
# Option checking
my $syntax = "$0 config-file.json output-file.html\n";
die $syntax unless (scalar @ARGV == 2);
# Read config file
my ($config, $error) = &read_file($ARGV[0]);
die $error if ($error);
($config, $error) = &decode($config);
die $error if ($error);
# Setup HTML output file
my $output = $ARGV[1];
my ($temp, $tempname) = tempfile();
######################################################### Main Logic
# Get status for all bots
my %bot_cache;
my $fail = 0;
foreach my $server (@$config) {
next if (defined $server->{'ignore'} and $server->{'ignore'} eq "true");
my ($BASE_URL, $BUILDER_URL, $BUILD_URL) =
($server->{'base_url'}, $server->{'builder_url'}, $server->{'build_url'});
&debug("Parsing server ".$server->{'name'}."...\n");
foreach my $builder (@{$server->{'builders'}}) {
&debug(" Parsing builder ".$builder->{'name'}."...\n");
foreach my $bot (@{$builder->{'bots'}}) {
&debug(" Parsing bot ".$bot->{'name'}."...\n");
next if defined $bot_cache{$bot->{'name'}};
my $status = &get_status($bot->{'name'}, $BASE_URL, $BUILDER_URL, $BUILD_URL);
if (!defined $bot->{'ignore'} or $bot->{'ignore'} ne "true") {
$fail = 1 if ($status->{'fail'});
} else {
&debug(" Ignoring...\n");
}
&debug($status->{'fail'} ? " FAIL\n" : " PASS\n");
$bot_cache{$bot->{'name'}} = $status;
}
}
}
# Dump all servers / bots
foreach my $server (@$config) {
next if (defined $server->{'ignore'} and $server->{'ignore'} eq "true");
my ($BASE_URL, $BUILDER_URL, $BUILD_URL) =
($server->{'base_url'}, $server->{'builder_url'}, $server->{'build_url'});
# Favicon
my $favicon = $fail ? "fail.ico" : "ok.ico";
print $temp "<link rel=\"shortcut icon\" href=\"$favicon\" type=\"image/x-icon\"/>\n";
# Header
print $temp "<table cellspacing=1 cellpadding=2>\n";
print $temp "<tr><td colspan=5> </td><tr>\n";
print $temp "<tr><th colspan=5>$server->{'name'} @ $date</td><tr>\n";
## Main loop
foreach my $builder (@{$server->{'builders'}}) {
print $temp "<tr><td colspan=5> </td><tr>\n";
print $temp "<tr><th colspan=5>$builder->{'name'}</td><tr>\n";
print $temp "<tr><th>Buildbot</th><th>Status</th><th>Comments</th>".
"<th>Build #</th><th>Commits</th></tr>\n";
foreach my $bot (@{$builder->{'bots'}}) {
print $temp "<tr>\n";
my $status = $bot_cache{$bot->{'name'}};
my $url = "$BASE_URL/$BUILDER_URL/$bot->{'name'}";
print $temp " <td><a href='$url'>$bot->{'name'}</a></td>\n";
if ($status->{'fail'}) {
print $temp " <td><font color='red'>FAIL</font></td>\n".
" <td>$status->{'fail'}</td>\n";
} else {
print $temp " <td><font color='green'>PASS</font></td>\n".
" <td> </td>\n";
}
if (defined $status->{'build'} and
defined $status->{'from'} and
defined $status->{'to'}) {
print $temp " <td>$status->{'build'}</td>\n".
" <td>$status->{'from'}-$status->{'to'}</td>\n";
} else {
print $temp " <td colspan=2> </td>\n";
}
print $temp "</tr>\n";
}
}
# Footer
print $temp "</table>\n";
}
close $temp;
# Move temp to main (atomic change)
move($tempname, $output);
exit;
######################################################### Subs
# GET STATUS: get the status of an individual bot
# (botname, base url, builder url, build url) -> (status)
sub get_status() {
my ($bot, $BASE_URL, $BUILDER_URL, $BUILD_URL) = @_;
my ($err, $contents, $json);
my %status;
# Get buildbot main JSON
($contents, $err) = wget("$BASE_URL/json/$BUILDER_URL/$bot");
$status{'fail'} = $err;
return \%status if $err;
($json, $err) = decode($contents);
$status{'fail'} = $err;
return \%status if $err;
# Find recent builds
my $cached_builds = scalar @{$json->{'cachedBuilds'}};
my $running_builds = scalar @{$json->{'currentBuilds'}};
my $last_build = $json->{'cachedBuilds'}[$cached_builds - $running_builds - 1];
return \%status if (not defined $last_build);
# Get most recent build
($contents, $err) = wget("$BASE_URL/json/$BUILDER_URL/$bot/$BUILD_URL/$last_build");
$status{'fail'} = $err;
return \%status if $err;
($json, $err) = decode($contents);
$status{'fail'} = $err;
return \%status if $err;
# Build number
$status{'build'} = $json->{'number'};
# Status of the last build
# "text" : [ "build", "successful" ],
# "text" : [ "failed", "svn-llvm" ],
my $failed = 0;
foreach (@{$json->{'text'}}) {
$status{'fail'} .= $_." " if ($failed);
$failed = 1 if (/failed|exception/);
}
$status{'fail'} =~ s/ $//;
# Commit range
# [
# 'revision',
# '238202',
# 'Build'
# ],
my $max = 0;
foreach (@{$json->{'properties'}}) {
if ($_->[0] eq 'revision') {
$max = $_->[1];
last;
}
}
# Min is in the changes' section
my $min = $max;
foreach (@{$json->{'sourceStamp'}->{'changes'}}) {
my $commit = $_->{'revision'};
$min = $commit if ($commit < $min);
}
$status{'from'} = $min;
$status{'to'} = $max;
return \%status;
}
# WGET: uses LWP to get an URL, returns contents (or error).
# (url) -> (contents, error)
sub wget() {
my ($url) = @_;
my ($contents, $error) = ("", "");
my $ua = LWP::UserAgent->new;
$ua->agent("LLVM BotMonitor/0.1");
my $req = HTTP::Request->new(GET => $url);
my $res = $ua->request($req);
if ($res->is_success) {
$contents = $res->content;
} else {
$error = $res->status_line;
}
return ($contents, $error);
}
# READ FILE: Reads a local file, returns contents
# (filename) -> (contents)
sub read_file() {
my ($file) = @_;
my ($contents, $error) = ("", "");
if (open FH, $file) {
while (<FH>) { $contents .= $_; }
close FH;
} else {
$error = "Can't open config file $file: $!";
}
return ($contents, $error);
}
# DECODE: Reads contents, returns JSON output (or error)
# (contents) -> (JSON, error)
sub decode() {
my ($contents) = @_;
my ($json, $error) = ("", "");
eval { $json = decode_json($contents); };
if ($@) {
if ($DEBUG) {
$error = $@;
} else {
$error = "JSON error";
}
}
return ($json, $error);
}
# DEBUG: Prints debug messages if debug enabled
# (msg) -> ()
sub debug () {
my ($msg) = @_;
print STDERR $msg if ($DEBUG);
}
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