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<?php
// Gentoaster build daemon worker
// Licensed under GPL v3, see COPYING file
require_once "config.php";
require_once "Mail.php";
$worker = new GearmanWorker();
$worker->addServer();
$worker->addFunction("invoke_image_build", "image_build");
$worker->addFunction("invoke_start_image", "start_image");
while ($worker->work()) {
// Do nothing!
};
function update_result($handle, $returncode, $result)
{
$result = trim($result);
echo "A job finished with return code ".$returncode.": ".$result."\n";
$db = new mysqli(
MYSQL_HOSTNAME,
MYSQL_USERNAME,
MYSQL_PASSWORD,
MYSQL_DATABASE
);
if (mysqli_connect_errno()) {
die("Could not connect to database ".mysqli_connect_error());
}
$query = "UPDATE builds SET result = ?, returncode = ? ".
"WHERE handle = ?";
$stmt = $db->prepare($query);
$stmt->bind_param("sds", $result, $returncode, $handle);
$stmt->execute();
$stmt->close();
$query = "SELECT id, email FROM builds WHERE handle = ?";
$stmt = $db->prepare($query);
$stmt->bind_param("s", $handle);
$stmt->execute();
$stmt->bind_result($buildID, $email);
$stmt->fetch();
if($email != null) {
$headers = array('From' => SMTP_EMAIL,
'To' => $email,
'Subject' => "Your Gentoaster build has completed");
$smtp = Mail::factory('smtp',
array ('host' => SMTP_HOST,
'auth' => true,
'username' => SMTP_USERNAME,
'password' => SMTP_PASSWORD));
$body = "Your Gentoaster build has finished.\n\n"
."You can view the results at ".GENTOASTER_URL
."/status.php?uuid=".$buildID;
$mail = $smtp->send($email, $headers, $body);
}
$stmt->close();
$db->close();
return serialize(array($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)
{
$progressMagic = 24;
$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"];
$buildPath = CONFIGURATIONS_PATH."/".$buildID;
@mkdir($buildPath, 0777, true);
if (is_writable($buildPath)) {
chdir($buildPath);
file_put_contents("config.ini", $configurationString);
$toolArgs = "--config config.ini --compress";
$cmd = GENTOASTER_PATH."/".BUILD_TOOL_NAME." ".$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)
{
$buildID = $job->workload();
$running = false;
$insert = false;
$update = false;
$db = new mysqli(
MYSQL_HOSTNAME,
MYSQL_USERNAME,
MYSQL_PASSWORD,
MYSQL_DATABASE
);
if (mysqli_connect_errno()) {
die("Could not connect to database ".mysqli_connect_error());
}
$query = "UPDATE builds SET result = ?, returncode = ? ".
"WHERE handle = ?";
$stmt = $db->prepare($query);
$stmt->bind_param("sds", $result, $returncode, $handle);
$stmt->execute();
$stmt->close();
$query = "SELECT port FROM ports ORDER BY port DESC LIMIT 1";
$stmt = $db->prepare($query);
$stmt->execute();
if ($stmt->num_rows == 0) {
// no ports! assign a new one
$stmt->close();
$port = LOW_PORT;
$insert = true;
echo "No ports! Assigning ".$port."\n";
} else {
// we have a port! let's check if our vm has one
$stmt->bind_result($lastport);
$stmt->fetch();
$stmt->close();
$query = "SELECT port, pid FROM ports WHERE id = ?";
$stmt = $db->prepare($query);
$stmt->bind_param("s", $buildID);
$stmt->execute();
if ($stmt->num_rows == 0) {
// vm doesn't have one, assign one!
$stmt->close();
$port = $lastport+1;
if ($port > HIGH_PORT) {
$port = LOW_PORT;
}
$insert = true;
echo "Assigning new port ".$port."\n";
} else {
// vm already has one, return it
$stmt->bind_result($port, $pid);
$stmt->fetch();
$stmt->close();
$running = true;
if (!check_pid($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) {
$cmd = GENTOASTER_PATH."/".WRAP_TOOL_NAME." ".
CONFIGURATIONS_PATH."/".$buildID."/".$buildID.".image ".
$port." ".TESTDRIVE_MEMORY."&";
$handle = proc_open($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
// hacky? works for now though
$pid = $pid + 2;
if ($insert) {
$query = "DELETE FROM ports WHERE port = ?";
$stmt = $db->prepare($query);
$stmt->bind_param("d", $port);
$stmt->execute();
$stmt->close();
$query = "INSERT INTO ports (id, port, pid) VALUES(?, ?, ?)";
$stmt = $db->prepare($query);
$stmt->bind_param("sdd", $buildID, $port, $pid);
$stmt->execute();
$stmt->close();
echo "Doing insert!\n";
} elseif ($update) {
$query = "UPDATE ports SET pid = ? WHERE id = ?";
$stmt = $db->prepare($query);
$stmt->bind_param("ds", $pid, $buildID);
$stmt->execute();
$stmt->close();
echo "Doing update\n";
}
$db->close();
$port = $port+1000;
return serialize(array(EXTERNAL_HOST, $port));
}
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