feat(movie-preview): Use getDirectDownloadById for generating preview

Allow to speed-up considerably the creation of previews for movies
stored on S3.

Signed-off-by: Carl Schwan <carlschwan@kde.org>

apps/files_external/lib/Lib/Storage/AmazonS3.php

@@ -23,6 +23,7 @@ use OCP\ICache;
 use OCP\ICacheFactory;
 use OCP\ITempManager;
 use OCP\Server;
+use Override;
 use Psr\Log\LoggerInterface;
 
 class AmazonS3 extends Common {
@@ -761,34 +762,43 @@ class AmazonS3 extends Common {
 		return $size;
 	}
 
-	/**
-	 * Generates and returns a presigned URL that expires after set duration
-	 *
-	 */
+	#[Override]
 	public function getDirectDownload(string $path): array|false {
+		if (!$this->isUsePresignedUrl()) {
+			return false;
+		}
+
 		$command = $this->getConnection()->getCommand('GetObject', [
 			'Bucket' => $this->bucket,
 			'Key' => $path,
 		]);
-		$duration = '+10 minutes';
-		$expiration = new \DateTime();
-		$expiration->modify($duration);
+		$expiration = new \DateTimeImmutable('+60 minutes');
 
-		// generate a presigned URL that expires after $duration time
-		$request = $this->getConnection()->createPresignedRequest($command, $duration, []);
 		try {
-			$presignedUrl = (string)$request->getUri();
+			// generate a presigned URL that expires after $expiration time
+			$presignedUrl = (string)$this->getConnection()->createPresignedRequest($command, $expiration, [
+				'signPayload' => true,
+			])->getUri();
 		} catch (S3Exception $exception) {
 			$this->logger->error($exception->getMessage(), [
 				'app' => 'files_external',
 				'exception' => $exception,
 			]);
+			return false;
 		}
-		$result = [
+		return [
 			'url' => $presignedUrl,
-			'presigned' => true,
-			'expiration' => $expiration,
+			'expiration' => $expiration->getTimestamp(),
 		];
-		return $result;
+	}
+
+	#[Override]
+	public function getDirectDownloadById(string $fileId): array|false {
+		if (!$this->isUsePresignedUrl()) {
+			return false;
+		}
+
+		$entry = $this->getCache()->get((int)$fileId);
+		return $this->getDirectDownload($entry->getPath());
 	}
 }

lib/private/Files/ObjectStore/S3ObjectTrait.php

@@ -298,15 +298,15 @@ trait S3ObjectTrait {
 	}
 
 	public function preSignedUrl(string $urn, \DateTimeInterface $expiration): ?string {
+		if (!$this->isUsePresignedUrl()) {
+			return null;
+		}
+
 		$command = $this->getConnection()->getCommand('GetObject', [
 			'Bucket' => $this->getBucket(),
 			'Key' => $urn,
 		]);
 
-		if (!$this->isUsePresignedUrl()) {
-			return null;
-		}
-
 		try {
 			return (string)$this->getConnection()->createPresignedRequest($command, $expiration, [
 				'signPayload' => true,

lib/private/Preview/Movie.php

@@ -43,21 +43,18 @@ class Movie extends ProviderV2 {
 	}
 
 	private function connectDirect(File $file): string|false {
-		if (stream_get_meta_data($file->fopen('r'))['seekable'] !== true) {
+		if ($file->isEncrypted()) {
 			return false;
 		}
 
 		// Checks for availability to access the video file directly via HTTP/HTTPS.
 		// Returns a string containing URL if available. Only implemented and tested
-		// with Amazon S3 currently.  In all other cases, return false. ffmpeg
+		// with Amazon S3 currently. In all other cases, return false. ffmpeg
 		// supports other protocols so this function may expand in the future.
-		$gddValues = $file->getStorage()->getDirectDownload($file->getName());
+		$gddValues = $file->getStorage()->getDirectDownloadById((string)$file->getId());
 
-		if (is_array($gddValues)) {
-			if (array_key_exists('url', $gddValues) && array_key_exists('presigned', $gddValues)) {
-				$directUrl = (str_starts_with($gddValues['url'], 'http') && ($gddValues['presigned'] === true)) ? $gddValues['url'] : false;
-				return $directUrl;
-			}
+		if (is_array($gddValues) && array_key_exists('url', $gddValues)) {
+			return str_starts_with($gddValues['url'], 'http') ? $gddValues['url'] : false;
 		}
 		return false;
 	}
@@ -81,7 +78,7 @@ class Movie extends ProviderV2 {
 
 		// If HTTP/HTTPS direct connect is not available or if the file is encrypted,
 		// process normally
-		if (($connectDirect === false) || $file->isEncrypted()) {
+		if ($connectDirect === false) {
 			// By default, download $sizeAttempts from the file along with
 			// the 'moov' atom.
 			// Example bitrates in the higher range: