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SAAS-1071 - more work on celery backend

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This commit is contained in:
Duncan Sommerville 2015-09-22 20:22:06 -04:00
parent ee1ceb9281
commit 55d5fc62a2
5 changed files with 111 additions and 17 deletions
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69
airtime_mvc/application/services/PodcastService.php
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@ -1,7 +1,30 @@
<?php
class Application_Service_PodcastService
class Application_Service_PodcastService extends Application_Service_ThirdPartyCeleryService
{
/**
* Arbitrary constant identifiers for the internal tasks array
*/
const DOWNLOAD = 'download';
/**
* @var string service name to store in ThirdPartyTrackReferences database
*/
protected static $_SERVICE_NAME = PODCAST_SERVICE_NAME; // Service name constant from constants.php
/**
* @var string exchange name for Podcast tasks
*/
protected static $_CELERY_EXCHANGE_NAME = 'podcast';
/**
* @var array map of constant identifiers to Celery task names
*/
protected static $_CELERY_TASKS = [
self::DOWNLOAD => 'podcast-download' // TODO: rename this to ingest?
];
/**
* There is maximum of 50 podcasts allowed in the library - to limit
* resource consumption. This function returns true if the podcast
@ -39,4 +62,48 @@ class Application_Service_PodcastService
}
/**
* Given an array of track identifiers, download RSS feed tracks
*
* @param array $trackIds array of track identifiers to download
* TODO: do we need other parameters here...?
*/
public function download($trackIds) {
$CC_CONFIG = Config::getConfig();
$data = array(
// 'download_urls' => , TODO: get download urls to send to Celery
'callback_url' => Application_Common_HTTPHelper::getStationUrl() . '/rest/media',
'api_key' => $apiKey = $CC_CONFIG["apiKey"][0],
);
// FIXME
Logging::warn("FIXME: we can't create a task reference without a valid file ID");
$this->_executeTask(static::$_CELERY_TASKS[self::DOWNLOAD], $data, null);
}
/**
* Update a ThirdPartyTrackReferences object for a completed upload
*
* @param $task CeleryTasks the completed CeleryTasks object
* @param $trackId int ThirdPartyTrackReferences identifier
* @param $track object third-party service track object
* @param $status string Celery task status
*
* @return ThirdPartyTrackReferences the updated ThirdPartyTrackReferences object
*
* @throws Exception
* @throws PropelException
*/
function updateTrackReference($task, $trackId, $track, $status) {
$ref = parent::updateTrackReference($task, $trackId, $track, $status);
if ($status == CELERY_SUCCESS_STATUS) {
// TODO: handle successful download
// $ref->setDbForeignId();
// FIXME: we need the file ID here, but 'track' is too arbitrary...
$ref->setDbFileId($track->fileId);
}
$ref->save();
return $ref;
}
}