#! /usr/bin/env php
<?
// configure a BOINC server to run single jobs;
// see http://boinc.berkeley.edu/trac/wiki/SingleJob
//
// Run this from project home dir.
// usage: html/ops/single_job_setup path-to-boinc_samples


$platform = 'i686-pc-linux-gnu';

function error($x) {
    echo "$x\n";
    exit(1);
}

function check_dirs() {
    if (!file_exists('config.xml')) {
        error("Run this from project home dir");
    }
}

function usage() {
    error("Usage: single_job_setup path-to-boinc_samples");
}

function get_includes() {
    $c = getcwd();
    chdir('html/ops');
    require_once('../inc/boinc_db.inc');
    BoincDb::get();
    chdir($c);
}

if ($argc != 2) usage();
$boinc_samples_dir = $argv[1];

// check for existence of wrapper, get its checksum

$wrapper_filename = "$boinc_samples_dir/wrapper/wrapper";
if (!file_exists($wrapper_filename)) {
    echo "$wrapper_filename doesn't exist.\n";
    error("Make sure you've built boinc_samples.");
}
$wrapper_md5 = md5_file($wrapper_filename);
if (!$wrapper_md5) {
    error("Can't read wrapper");
}
echo "MD5 of $wrapper_filename is $wrapper_md5\n";

get_includes();

$app_name = "single_job_$platform";
$app = BoincApp::lookup("name='$app_name'");
if (!$app) {
    $now = time();
    $retval = BoincApp::insert("(create_time, name, user_friendly_name) values ($now, '$app_name','Jobs for $platform')");
    if (!$retval) {
        error("Couldn't add application");
    }
}

// create apps/appname

$app_dir = "apps/$app_name";
if (!is_dir($app_dir)) {
    if (!mkdir($app_dir)) {
        error("Couldn't make app dir");
    }
}

// check for apps/appname/appname_platform_N,
// find the largest such N; see if have new wrapper
// If needed, create new version, copy wrapper

$i = 0;
$latest_i = -1;
$have_latest_wrapper = false;
while (1) {
    $app_dir = "apps/$app_name/".$app_name."_1.".$i."_$platform";
    echo "checking $app_dir\n";
    if (!file_exists($app_dir)) break;
    $latest_i = $i;
    $i++;
}

if ($latest_i >= 0) {
    $i = $latest_i;
    $app_dir = "apps/$app_name/".$app_name."_1.".$i."_$platform";
    $file = "$app_dir/".$app_name."_1.".$i."_$platform";
    $latest_md5 = md5_file($file);
    if ($latest_md5 == $wrapper_md5) {
        $have_latest_wrapper = true;
        echo "App version is current.\n";
    } else {
        echo "$latest_md5 != $wrapper_md5\n";
    }
}

if (!$have_latest_wrapper) {
    $i = $latest_i + 1;
    $app_dir = "apps/$app_name/".$app_name."_1.".$i."_$platform";
    $file = "$app_dir/".$app_name."_1.".$i."_$platform";
    if (!mkdir($app_dir)) {
        error("Couldn't created dir: $app_dir");
    }
    if (!copy($wrapper_filename, $file)) {
        error("Couldn't copy $wrapper_filename to $file");
    }
    chmod($file, 0750);
    echo "- type 'update_versions', and answer 'y' to all questions.\n";
}

$config = file_get_contents('config.xml');
if (!strstr($config, "single_job_assimilator")) {
    echo "- Add the following to the <daemons> section of config.xml:\n
    <daemon>
      <cmd>single_job_assimilator -app $app_name</cmd>
      <output>single_job_assimilator_$platform.out</output>
      <pid>single_job_assimilator_$platform.pid</pid>
    </daemon>
Then restart your project by typing
bin/stop
bin/start
";
}

?>