/**
* Submit a Celery job via direct job request insertion into Redis.
*
* @return int
*/
public static function celerySubmit()
{
# this function does NO checking on inputs. Good luck!
# grab the arguments. this function has variable arguments.
# it is assumed that the first argument is the metrics function Celery is to
# execute, while the remaining arguments are assumed to be integer arguments
# to be passed to the metrics Celery function.
require "Predis/Autoloader.php";
Predis\Autoloader::register();
if (func_num_args() == 0) {
return -599;
# incorrect number of arguements
} else {
$params = func_get_args();
}
$args2pass = array_slice($params, 1);
for ($i = 0; $i < count($args2pass); $i++) {
$args2pass[$i] = (int) $args2pass[$i];
}
$task = array("task" => "Metrics.metrics_base.{$params[0]}", "args" => $args2pass);
$task["id"] = sha1(json_encode($task["args"]) . time());
$bodyTask = array("body" => base64_encode(json_encode($task)), "headers" => new stdClass(), "content-type" => "application/json", "properties" => array("body_encoding" => "base64", "delivery_info" => array("priority" => 0, "routing_key" => "default", "exchange" => "default"), "delivery_tag" => sha1(base64_encode(json_encode($task)) . time()), "delivery_mode" => 2), "content-encoding" => "utf-8");
# new Predis\Client
try {
$redis = new Predis\Client(array("host" => "127.0.0.1", "port" => 6379, "database" => 9));
} catch (Exception $e) {
die($e->getMessage());
}
# debugging...
# echo "celery-task-meta-".$task["id"]."\n";
$redis->lPush('celery', json_encode($bodyTask));
}
/**
* Prepend a value to a list
*
* @param string $key
* @param string $value
* @throws CM_Exception_Invalid
*/
public function lPush($key, $value)
{
try {
$this->_redis->lPush($key, $value);
} catch (Predis\Response\ServerException $e) {
throw new CM_Exception_Invalid('Cannot push key to list.', null, ['key' => $key]);
}
}
# remote log analysers are fine things, but the overhead in establishing a
# connection cannot be tolerated.
#
# TODO: does the RavenHandler re-establish a connection if it is dropped?
require 'vendor/raven/raven/lib/Raven/Autoloader.php';
Raven_Autoloader::register();
$client = new Raven_Client(RAVEN_DSN, array('release' => '2015-08-13'));
$log->pushHandler(new RavenHandler($client));
#
# redis
#
# doesn't actually connect to Redis ...
$redis = new Predis\Client(['scheme' => 'tcp', 'host' => '127.0.0.1', 'port' => 6379]);
# delete whatever happens to be in that value now
// $redis->del(QUEUE_NAME); # good for testing, don't want to do this in production.
# push an initial value into the list to check everything is working
define("CONTROL_SIGNAL", 0.0);
$redis->lPush(QUEUE_NAME, CONTROL_SIGNAL);
# this is amongst the grossest things I've ever seen.
assert('$redis->exists(QUEUE_NAME); //* could not find queue ' . QUEUE_NAME);
while (true) {
list($_, $record) = $redis->brPop(QUEUE_NAME, TIMEOUT);
if (empty($record) || $record == CONTROL_SIGNAL) {
//echo "null/control signal. continuing\n";
continue;
}
echo "received " . $record;
# the 'DEBUG' here doesn't matter, our record processor overwrites this
$log->addDebug($record);
}
echo "done\n";
