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Refactored file storage code slightly to allow multiple download URLs

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This commit is contained in:
Albert Santoni 2015-03-30 11:31:07 -04:00
parent 271dc266fa
commit d31de0937f
11 changed files with 78 additions and 35 deletions
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42
airtime_mvc/application/services/MediaService.php
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@ -55,10 +55,11 @@ class Application_Service_MediaService
if ($media == null) {
throw new FileNotFoundException();
}
$filepath = $media->getFilePath();
// Make sure we don't have some wrong result beecause of caching
// Make sure we don't have some wrong result because of caching
clearstatcache();
$filePath = "";
if ($media->getPropelOrm()->isValidPhysicalFile()) {
$filename = $media->getPropelOrm()->getFilename();
//Download user left clicks a track and selects Download.
@ -71,13 +72,40 @@ class Application_Service_MediaService
header('Content-Disposition: inline; filename="' . $filename . '"');
}
$filepath = $media->getFilePath();
$size= $media->getFileSize();
$mimeType = $media->getPropelOrm()->getDbMime();
Application_Common_FileIO::smartReadFile($filepath, $size, $mimeType);
/*
In this block of code below, we're getting the list of download URLs for a track
and then streaming the file as the response. A file can be stored in more than one location,
with the alternate locations used as a fallback, so that's why we're looping until we
are able to actually send the file.
This mechanism is used to try fetching our file from our internal S3 caching proxy server first.
If the file isn't found there (or the cache is down), then we attempt to download the file
directly from Amazon S3. We do this to save bandwidth costs!
*/
$filePaths = $media->getFilePaths();
assert(is_array($filePaths));
do {
//Read from $filePath and stream it to the browser.
$filePath = array_shift($filePaths);
try {
$size= $media->getFileSize();
$mimeType = $media->getPropelOrm()->getDbMime();
Application_Common_FileIO::smartReadFile($filePath, $size, $mimeType);
} catch (FileNotFoundException $e) {
//If we have no alternate filepaths left, then let the exception bubble up.
if (sizeof($filePaths) == 0) {
throw $e;
}
}
//Retry with the next alternate filepath in the list
} while (sizeof($filePaths) > 0);
exit;
} else {
throw new FileNotFoundException();
throw new FileNotFoundException($filePath);
}
}