backend: implement getRecordingMedia method in StorageProvider and S3StorageProvider, refactor RecordingService to use it

backend/src/services/recording.service.ts

@@ -432,7 +432,7 @@ export class RecordingService {
 				return this.getFullStreamResponse(recordingPath, fileSize);
 			}
 
-			const fileStream = await this.s3Service.getObjectAsStream(recordingPath, MEET_S3_BUCKET, {
+			const fileStream = await this.storageService.getRecordingMedia(recordingPath, {
 				start,
 				end
 			});
@@ -446,7 +446,7 @@ export class RecordingService {
 		recordingPath: string,
 		fileSize: number
 	): Promise<{ fileSize: number; fileStream: Readable }> {
-		const fileStream = await this.s3Service.getObjectAsStream(recordingPath, MEET_S3_BUCKET);
+		const fileStream = await this.storageService.getRecordingMedia(recordingPath);
 		return { fileSize, fileStream };
 	}
 

backend/src/services/s3.service.ts

@@ -187,8 +187,8 @@ export class S3Service {
 
 	async getObjectAsStream(
 		name: string,
-		bucket: string = MEET_S3_BUCKET,
-		range?: { start: number; end: number }
+		range?: { start: number; end: number },
+		bucket: string = MEET_S3_BUCKET
 	): Promise<Readable> {
 		try {
 			const obj = await this.getObject(name, bucket, range);

backend/src/services/storage/providers/s3-storage.provider.ts

@@ -5,6 +5,7 @@ import INTERNAL_CONFIG from '../../../config/internal-config.js';
 import { errorRecordingNotFound, OpenViduMeetError, RedisKeyName } from '../../../models/index.js';
 import { LoggerService, RedisService, S3Service, StorageProvider } from '../../index.js';
 import { RecordingHelper } from '../../../helpers/recording.helper.js';
+import { Readable } from 'stream';
 
 /**
  * Implementation of the StorageProvider interface using AWS S3 for persistent storage
@@ -384,6 +385,22 @@ export class S3StorageProvider<
 		}
 	}
 
+	async getRecordingMedia(
+		recordingPath: string,
+		range?: {
+			end: number;
+			start: number;
+		}
+	): Promise<Readable> {
+		try {
+			this.logger.debug(`Retrieving recording media from S3 at path: ${recordingPath}`);
+			return await this.s3Service.getObjectAsStream(recordingPath, range);
+		} catch (error) {
+			this.handleError(error, `Error fetching recording media for path ${recordingPath}`);
+			throw error;
+		}
+	}
+
 	/**
 	 * Deletes multiple recording binary files from S3 storage using their file paths.
 	 *

backend/src/services/storage/storage.interface.ts

@@ -1,4 +1,5 @@
 import { GlobalPreferences, MeetRecordingInfo, MeetRoom } from '@typings-ce';
+import { Readable } from 'stream';
 
 /**
  * An interface that defines the contract for storage providers in the OpenVidu Meet application.
@@ -149,6 +150,19 @@ export interface StorageProvider<
 	 */
 	deleteRecordingMetadataByPaths(metadataPaths: string[]): Promise<void>;
 
+	/**
+	 * Retrieves the media content of a recording file.
+	 *
+	 * @param recordingPath - The path of the recording file to retrieve.
+	 * @param range - An optional range object specifying the start and end byte positions to retrieve.
+	 */
+	getRecordingMedia(
+		recordingPath: string,
+		range?: {
+			end: number;
+			start: number;
+		}
+	): Promise<Readable>;
 	/**
 	 * Deletes multiple recording binary files by their paths.
 	 *

backend/src/services/storage/storage.service.ts

@@ -5,6 +5,7 @@ import { MEET_NAME_ID, MEET_SECRET, MEET_USER, MEET_WEBHOOK_ENABLED, MEET_WEBHOO
 import { MeetLock, PasswordHelper } from '../../helpers/index.js';
 import { errorRoomNotFound, internalError, OpenViduMeetError } from '../../models/error.model.js';
 import { LoggerService, MutexService, StorageFactory, StorageProvider } from '../index.js';
+import { Readable } from 'stream';
 
 /**
  * A service for managing storage operations related to OpenVidu Meet rooms and preferences.
@@ -221,6 +222,25 @@ export class MeetStorageService<
 		}>;
 	}
 
+	/**
+	 * Retrieves recording media as a readable stream from the storage provider.
+	 *
+	 * @param recordingPath - The path to the recording file in storage
+	 * @param range - Optional byte range for partial content retrieval
+	 * @param range.start - Starting byte position
+	 * @param range.end - Ending byte position
+	 * @returns A Promise that resolves to a Readable stream of the recording media
+	 */
+	async getRecordingMedia(
+		recordingPath: string,
+		range?: {
+			end: number;
+			start: number;
+		}
+	): Promise<Readable> {
+		return this.storageProvider.getRecordingMedia(recordingPath, range) as Promise<Readable>;
+	}
+
 	/**
 	 * Deletes multiple recording metadata files by their paths.
 	 *