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<?php
// Gentoaster build daemon worker
// Licensed under GPL v3, see COPYING file
$configurationsPath = "/var/www/gentoaster/images";
$gentoasterPath = "/usr/share/gentoaster";
$buildToolName = "create_image.sh";
$wrapToolName = "wrap.sh";
$externalHost = "192.168.2.169";
$lowPort = 5900;
$highPort = 5999;
// DO NOT EDIT BELOW THIS LINE
$progressMagic = 23;
$worker = new GearmanWorker();
$worker->addServer();
$worker->addFunction("invoke_image_build", "image_build");
$worker->addFunction("invoke_start_image", "start_image");
while ($worker->work());
function update_result($handle, $returncode, $result)
{
$result = trim($result);
echo "A job finished with return code ".$returncode.": ".$result."\n";
$db = mysql_connect("localhost", "gentoaster", "");
if(!$db) die("Could not connect to database ".mysql_error());
mysql_select_db("gentoaster");
$result = mysql_real_escape_string($result);
$query = "UPDATE builds".
" SET result = '".$result."', returncode = '".$returncode.
"' WHERE handle = '".mysql_real_escape_string($handle)."'";
mysql_query($query);
return serialize(array($returncode, $result));
}
function check_pid($pid)
{
$cmd = "ps $pid";
exec($cmd, $output, $result);
if(count($output) >= 2){
return true;
}
return false;
}
function image_build($job)
{
global $configurationsPath, $gentoasterPath, $buildToolName, $progressMagic;
$handle = $job->handle();
$handlehash = md5($handle);
echo "Processing job handle hash ".$handlehash."\n";
$configurationString = $job->workload();
$configurationArray = parse_ini_string($configurationString);
if ($configurationArray !== FALSE) {
if (isset($configurationArray["BUILD_ID"])) {
$buildID = $configurationArray["BUILD_ID"];
$buildPath = $configurationsPath."/".$buildID;
@mkdir($buildPath, 0777, true);
if (is_writable($buildPath)) {
chdir($buildPath);
file_put_contents("config.ini", $configurationString);
$toolArgs = "--config config.ini --compress";
$cmd = $gentoasterPath."/".$buildToolName." ".$toolArgs;
$processHandle = popen($cmd." 2>&1", "r");
$nonstatusOutput = "";
while (!feof($processHandle)) {
$progressLine = fgets($processHandle);
preg_match("/Step (.+):/", $progressLine, $matches);
if (sizeof($matches) > 0) {
$job->sendStatus($matches[1], $progressMagic);
} else {
$nonstatusOutput .= $progressLine;
}
}
$returncode = pclose($processHandle);
unlink("config.ini");
return update_result($handle, $returncode, $nonstatusOutput);
} else {
$error = "Configured build path is not writable";
return update_result($handle, -2, $error);
}
} else {
$error = "Configuration file is incomplete";
return update_result($handle, -3, $error);
}
} else {
$error = "Configuration string is not valid";
return update_result($handle, -4, $error);
}
}
function start_image($job)
{
global $configurationsPath, $gentoasterPath, $wrapToolName;
global $externalHost, $lowPort, $highPort;
$buildID = $job->workload();
$running = false;
$insert = false;
$update = false;
$db = mysql_connect("localhost", "gentoaster", "");
if(!$db) die("Could not connect to database ".mysql_error());
mysql_select_db("gentoaster");
$query = "SELECT port FROM ports ORDER BY port DESC LIMIT 1";
$result = mysql_query($query);
if(mysql_num_rows($result) == 0) {
// no ports! assign a new one
$port = $lowPort;
$insert = true;
echo "No ports! Assigning ".$port."\n";
} else {
// we have a port! let's check if our vm has one
$ports = mysql_fetch_array($result);
$lastport = $ports[0];
$query = "SELECT port, pid FROM ports WHERE id = '".$buildID."'";
$result = mysql_query($query);
if (mysql_num_rows($result) == 0) {
// vm doesn't have one, assign one!
$port = $lastport+1;
if ($port > $highPort) {
$port = $lowPort;
}
$insert = true;
echo "Assigning new port ".$port."\n";
} else {
// vm already has one, return it
$ports = mysql_fetch_array($result);
$port = $ports[0];
$pid = $ports[1];
$running = true;
if(!check_pid($pid)) {
$running = false;
$update = true;
echo "VM is not running, PID ".$pid." is dead!\n";
} else {
echo "VM is running on PID ".$pid."\n";
}
echo "VM already has port ".$port."\n";
}
}
if (!$running || $update) {
$cmd = $gentoasterPath."/".$wrapToolName." ".
$configurationsPath."/".$buildID."/".$buildID.".image ".
$port." &";
$handle = proc_open($cmd, array(), $foo);
$status = proc_get_status($handle);
$pid = $status["pid"];
echo "New process spawned with PID ".$pid."\n";
proc_close($handle);
}
// qemu pid is two up
$pid = $pid + 2;
if ($insert) {
$query = "DELETE FROM ports WHERE port = ".$port;
$result = mysql_query($query);
$query = "INSERT INTO ports (id, port, pid) VALUES('".mysql_real_escape_string($buildID)."', ".$port.", ".$pid.")";
$result = mysql_query($query);
echo "Doing insert!\n";
} elseif($update) {
$query = "UPDATE ports SET pid = ".$pid." WHERE id = '".$buildID."'";
$result = mysql_query($query);
echo "Doing update\n";
}
$port = $port+1000;
return serialize(array($externalHost, $port));
}
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