4 files changed, 152 insertions, 0 deletions

diff --git a/server/lib/jobs/transcoding-job-scheduler/index.ts b/server/lib/jobs/transcoding-job-scheduler/index.ts
new file mode 100644
index 000000000..73152a1be
--- /dev/null
+++ b/server/lib/jobs/transcoding-job-scheduler/index.ts
@@ -0,0 +1 @@
+export * from './transcoding-job-scheduler'
diff --git a/server/lib/jobs/transcoding-job-scheduler/transcoding-job-scheduler.ts b/server/lib/jobs/transcoding-job-scheduler/transcoding-job-scheduler.ts
new file mode 100644
index 000000000..d7c614fb8
--- /dev/null
+++ b/server/lib/jobs/transcoding-job-scheduler/transcoding-job-scheduler.ts
@@ -0,0 +1,17 @@
+import { JobScheduler, JobHandler } from '../job-scheduler'
+
+import * as videoFileOptimizer from './video-file-optimizer-handler'
+import * as videoFileTranscoder from './video-file-transcoder-handler'
+import { JobCategory } from '../../../../shared'
+
+const jobHandlers: { [ handlerName: string ]: JobHandler<any> } = {
+  videoFileOptimizer,
+  videoFileTranscoder
+}
+const jobCategory: JobCategory = 'transcoding'
+
+const transcodingJobScheduler = new JobScheduler(jobCategory, jobHandlers)
+
+export {
+  transcodingJobScheduler
+}
diff --git a/server/lib/jobs/transcoding-job-scheduler/video-file-optimizer-handler.ts b/server/lib/jobs/transcoding-job-scheduler/video-file-optimizer-handler.ts
new file mode 100644
index 000000000..ccded4721
--- /dev/null
+++ b/server/lib/jobs/transcoding-job-scheduler/video-file-optimizer-handler.ts
@@ -0,0 +1,85 @@
+import * as Bluebird from 'bluebird'
+
+import { database as db } from '../../../initializers/database'
+import { logger, computeResolutionsToTranscode } from '../../../helpers'
+import { VideoInstance } from '../../../models'
+import { addVideoToFriends } from '../../friends'
+import { JobScheduler } from '../job-scheduler'
+
+async function process (data: { videoUUID: string }, jobId: number) {
+  const video = await db.Video.loadByUUIDAndPopulateAuthorAndPodAndTags(data.videoUUID)
+  // No video, maybe deleted?
+  if (!video) {
+    logger.info('Do not process job %d, video does not exist.', jobId, { videoUUID: video.uuid })
+    return undefined
+  }
+
+  await video.optimizeOriginalVideofile()
+
+  return video
+}
+
+function onError (err: Error, jobId: number) {
+  logger.error('Error when optimized video file in job %d.', jobId, err)
+  return Promise.resolve()
+}
+
+async function onSuccess (jobId: number, video: VideoInstance) {
+  if (video === undefined) return undefined
+
+  logger.info('Job %d is a success.', jobId)
+
+  // Maybe the video changed in database, refresh it
+  const videoDatabase = await db.Video.loadByUUIDAndPopulateAuthorAndPodAndTags(video.uuid)
+  // Video does not exist anymore
+  if (!videoDatabase) return undefined
+
+  const remoteVideo = await videoDatabase.toAddRemoteJSON()
+
+  // Now we'll add the video's meta data to our friends
+  await addVideoToFriends(remoteVideo, null)
+
+  const originalFileHeight = await videoDatabase.getOriginalFileHeight()
+  // Create transcoding jobs if there are enabled resolutions
+
+  const resolutionsEnabled = computeResolutionsToTranscode(originalFileHeight)
+  logger.info(
+    'Resolutions computed for video %s and origin file height of %d.', videoDatabase.uuid, originalFileHeight,
+    { resolutions: resolutionsEnabled }
+  )
+
+  if (resolutionsEnabled.length !== 0) {
+    try {
+      await db.sequelize.transaction(async t => {
+        const tasks: Bluebird<any>[] = []
+
+        for (const resolution of resolutionsEnabled) {
+          const dataInput = {
+            videoUUID: videoDatabase.uuid,
+            resolution
+          }
+
+          const p = JobScheduler.Instance.createJob(t, 'videoFileTranscoder', dataInput)
+          tasks.push(p)
+        }
+
+        await Promise.all(tasks)
+      })
+
+      logger.info('Transcoding jobs created for uuid %s.', videoDatabase.uuid, { resolutionsEnabled })
+    } catch (err) {
+      logger.warn('Cannot transcode the video.', err)
+    }
+  } else {
+    logger.info('No transcoding jobs created for video %s (no resolutions enabled).')
+    return undefined
+  }
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  process,
+  onError,
+  onSuccess
+}
diff --git a/server/lib/jobs/transcoding-job-scheduler/video-file-transcoder-handler.ts b/server/lib/jobs/transcoding-job-scheduler/video-file-transcoder-handler.ts
new file mode 100644
index 000000000..853645510
--- /dev/null
+++ b/server/lib/jobs/transcoding-job-scheduler/video-file-transcoder-handler.ts
@@ -0,0 +1,49 @@
+import { database as db } from '../../../initializers/database'
+import { updateVideoToFriends } from '../../friends'
+import { logger } from '../../../helpers'
+import { VideoInstance } from '../../../models'
+import { VideoResolution } from '../../../../shared'
+
+async function process (data: { videoUUID: string, resolution: VideoResolution }, jobId: number) {
+  const video = await db.Video.loadByUUIDAndPopulateAuthorAndPodAndTags(data.videoUUID)
+  // No video, maybe deleted?
+  if (!video) {
+    logger.info('Do not process job %d, video does not exist.', jobId, { videoUUID: video.uuid })
+    return undefined
+  }
+
+  await video.transcodeOriginalVideofile(data.resolution)
+
+  return video
+}
+
+function onError (err: Error, jobId: number) {
+  logger.error('Error when transcoding video file in job %d.', jobId, err)
+  return Promise.resolve()
+}
+
+async function onSuccess (jobId: number, video: VideoInstance) {
+  if (video === undefined) return undefined
+
+  logger.info('Job %d is a success.', jobId)
+
+  // Maybe the video changed in database, refresh it
+  const videoDatabase = await db.Video.loadByUUIDAndPopulateAuthorAndPodAndTags(video.uuid)
+  // Video does not exist anymore
+  if (!videoDatabase) return undefined
+
+  const remoteVideo = videoDatabase.toUpdateRemoteJSON()
+
+  // Now we'll add the video's meta data to our friends
+  await updateVideoToFriends(remoteVideo, null)
+
+  return undefined
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  process,
+  onError,
+  onSuccess
+}