public function localize($file_id)
{
$contentClient = new \Guzzle\Service\Client('http://' . Config::get('app.content_host') . '/');
$attachment = Attachment::find($file_id);
$mailbox = Mailbox::find($attachment->mailbox_id);
$tmpfname = tempnam(sys_get_temp_dir(), $file_id);
$response = $this->contextIO->getFileContent($mailbox->mailbox_id, ['file_id' => $attachment->attachment_id], $tmpfname);
if (!$response) {
return ['success' => false, 'error_message' => 'Failed to retrieve context.io file contents'];
}
$sha1 = sha1_file($tmpfname);
if (strrpos(basename($attachment->original_path), '.')) {
$extension = substr(basename($attachment->original_path), strrpos(basename($attachment->original_path), '.'));
} else {
$extension = ".extensionless";
}
$save_path = 'dropbox/' . $sha1 . $extension;
// check the byte size of the cached file if it exists on the content server
$request = $contentClient->head($save_path);
try {
$response = $request->send();
$contentLength = $response->getContentLength();
} catch (Guzzle\Http\Exception\BadResponseException $e) {
$clientResponseException = $e->getResponse();
$statusCode = $clientResponseException->getStatusCode();
if ($statusCode !== 404) {
return ['success' => false, 'error_message' => 'HEAD request from content server path ' . $save_path . ' raised http exception ' . $statusCode . "\n" . print_r($clientResponseException, true)];
}
$contentLength = false;
}
// Raise an exception if we are about to localize this file in place of another file with the same content SHA
if ($contentLength && $contentLength > 0 && $contentLength != filesize($tmpfname)) {
return ['success' => false, 'error_message' => "File exists on content server with same SHA but different byte count!"];
}
// Upload the file if it does not already exist on the content server
if (!$contentLength) {
$request = $contentClient->put($save_path);
$request->getCurlOptions()->set(CURLOPT_SSL_VERIFYHOST, false);
// for testing ONLY!
$request->getCurlOptions()->set(CURLOPT_SSL_VERIFYPEER, false);
// for testing ONLY!
// TODO: Determine which approach is best of these two:
// Having a second pointer on same file, while first pointer is still open
// (Temp files are deleted as soon as fclose called)
$request->setBody(fopen($tmpfname, 'r'));
// Or should we use....
// rewind($fd);
// $request->setBody($fd);
// I'm not sure if guzzle would support that,
// nor if w+ mode supports rewind
// (Will it read from start without erasing after a rewind in w+?)
$response = $request->send();
}
// Update the database with the file size information
$attachment->file_sha = $sha1;
$attachment->etag = sha1($sha1 . $attachment->bytes . $attachment->service_updated_at . $attachment->client_updated_at);
$attachment->save();
// TODO: Error handling
// TODO: Process abstraction from controller to classes
return ['success' => true, 'local_url' => 'http://' . Config::get('app.content_host') . '/' . $save_path];
}
