2 files changed, 344 insertions, 0 deletions

diff --git a/server/controllers/api/remote/index.js b/server/controllers/api/remote/index.js
new file mode 100644
index 000000000..2947632d5
--- /dev/null
+++ b/server/controllers/api/remote/index.js
@@ -0,0 +1,16 @@
+'use strict'
+
+const express = require('express')
+
+const utils = require('../../../helpers/utils')
+
+const router = express.Router()
+
+const videosRemoteController = require('./videos')
+
+router.use('/videos', videosRemoteController)
+router.use('/*', utils.badRequest)
+
+// ---------------------------------------------------------------------------
+
+module.exports = router
diff --git a/server/controllers/api/remote/videos.js b/server/controllers/api/remote/videos.js
new file mode 100644
index 000000000..c45a86dbb
--- /dev/null
+++ b/server/controllers/api/remote/videos.js
@@ -0,0 +1,328 @@
+'use strict'
+
+const eachSeries = require('async/eachSeries')
+const express = require('express')
+const waterfall = require('async/waterfall')
+
+const db = require('../../../initializers/database')
+const middlewares = require('../../../middlewares')
+const secureMiddleware = middlewares.secure
+const videosValidators = middlewares.validators.remote.videos
+const signatureValidators = middlewares.validators.remote.signature
+const logger = require('../../../helpers/logger')
+const utils = require('../../../helpers/utils')
+
+const router = express.Router()
+
+router.post('/',
+  signatureValidators.signature,
+  secureMiddleware.checkSignature,
+  videosValidators.remoteVideos,
+  remoteVideos
+)
+
+// ---------------------------------------------------------------------------
+
+module.exports = router
+
+// ---------------------------------------------------------------------------
+
+function remoteVideos (req, res, next) {
+  const requests = req.body.data
+  const fromPod = res.locals.secure.pod
+
+  // We need to process in the same order to keep consistency
+  // TODO: optimization
+  eachSeries(requests, function (request, callbackEach) {
+    const data = request.data
+
+    switch (request.type) {
+      case 'add':
+        addRemoteVideoRetryWrapper(data, fromPod, callbackEach)
+        break
+
+      case 'update':
+        updateRemoteVideoRetryWrapper(data, fromPod, callbackEach)
+        break
+
+      case 'remove':
+        removeRemoteVideo(data, fromPod, callbackEach)
+        break
+
+      case 'report-abuse':
+        reportAbuseRemoteVideo(data, fromPod, callbackEach)
+        break
+
+      default:
+        logger.error('Unkown remote request type %s.', request.type)
+    }
+  }, function (err) {
+    if (err) logger.error('Error managing remote videos.', { error: err })
+  })
+
+  // We don't need to keep the other pod waiting
+  return res.type('json').status(204).end()
+}
+
+// Handle retries on fail
+function addRemoteVideoRetryWrapper (videoToCreateData, fromPod, finalCallback) {
+  utils.transactionRetryer(
+    function (callback) {
+      return addRemoteVideo(videoToCreateData, fromPod, callback)
+    },
+    function (err) {
+      if (err) {
+        logger.error('Cannot insert the remote video with many retries.', { error: err })
+      }
+
+      // Do not return the error, continue the process
+      return finalCallback(null)
+    }
+  )
+}
+
+function addRemoteVideo (videoToCreateData, fromPod, finalCallback) {
+  logger.debug('Adding remote video "%s".', videoToCreateData.remoteId)
+
+  waterfall([
+
+    function startTransaction (callback) {
+      db.sequelize.transaction({ isolationLevel: 'SERIALIZABLE' }).asCallback(function (err, t) {
+        return callback(err, t)
+      })
+    },
+
+    function findOrCreateAuthor (t, callback) {
+      const name = videoToCreateData.author
+      const podId = fromPod.id
+      // This author is from another pod so we do not associate a user
+      const userId = null
+
+      db.Author.findOrCreateAuthor(name, podId, userId, t, function (err, authorInstance) {
+        return callback(err, t, authorInstance)
+      })
+    },
+
+    function findOrCreateTags (t, author, callback) {
+      const tags = videoToCreateData.tags
+
+      db.Tag.findOrCreateTags(tags, t, function (err, tagInstances) {
+        return callback(err, t, author, tagInstances)
+      })
+    },
+
+    function createVideoObject (t, author, tagInstances, callback) {
+      const videoData = {
+        name: videoToCreateData.name,
+        remoteId: videoToCreateData.remoteId,
+        extname: videoToCreateData.extname,
+        infoHash: videoToCreateData.infoHash,
+        description: videoToCreateData.description,
+        authorId: author.id,
+        duration: videoToCreateData.duration,
+        createdAt: videoToCreateData.createdAt,
+        // FIXME: updatedAt does not seems to be considered by Sequelize
+        updatedAt: videoToCreateData.updatedAt
+      }
+
+      const video = db.Video.build(videoData)
+
+      return callback(null, t, tagInstances, video)
+    },
+
+    function generateThumbnail (t, tagInstances, video, callback) {
+      db.Video.generateThumbnailFromData(video, videoToCreateData.thumbnailData, function (err) {
+        if (err) {
+          logger.error('Cannot generate thumbnail from data.', { error: err })
+          return callback(err)
+        }
+
+        return callback(err, t, tagInstances, video)
+      })
+    },
+
+    function insertVideoIntoDB (t, tagInstances, video, callback) {
+      const options = {
+        transaction: t
+      }
+
+      video.save(options).asCallback(function (err, videoCreated) {
+        return callback(err, t, tagInstances, videoCreated)
+      })
+    },
+
+    function associateTagsToVideo (t, tagInstances, video, callback) {
+      const options = { transaction: t }
+
+      video.setTags(tagInstances, options).asCallback(function (err) {
+        return callback(err, t)
+      })
+    }
+
+  ], function (err, t) {
+    if (err) {
+      // This is just a debug because we will retry the insert
+      logger.debug('Cannot insert the remote video.', { error: err })
+
+      // Abort transaction?
+      if (t) t.rollback()
+
+      return finalCallback(err)
+    }
+
+    // Commit transaction
+    t.commit().asCallback(function (err) {
+      if (err) return finalCallback(err)
+
+      logger.info('Remote video %s inserted.', videoToCreateData.name)
+      return finalCallback(null)
+    })
+  })
+}
+
+// Handle retries on fail
+function updateRemoteVideoRetryWrapper (videoAttributesToUpdate, fromPod, finalCallback) {
+  utils.transactionRetryer(
+    function (callback) {
+      return updateRemoteVideo(videoAttributesToUpdate, fromPod, callback)
+    },
+    function (err) {
+      if (err) {
+        logger.error('Cannot update the remote video with many retries.', { error: err })
+      }
+
+      // Do not return the error, continue the process
+      return finalCallback(null)
+    }
+  )
+}
+
+function updateRemoteVideo (videoAttributesToUpdate, fromPod, finalCallback) {
+  logger.debug('Updating remote video "%s".', videoAttributesToUpdate.remoteId)
+
+  waterfall([
+
+    function startTransaction (callback) {
+      db.sequelize.transaction({ isolationLevel: 'SERIALIZABLE' }).asCallback(function (err, t) {
+        return callback(err, t)
+      })
+    },
+
+    function findVideo (t, callback) {
+      fetchVideo(fromPod.host, videoAttributesToUpdate.remoteId, function (err, videoInstance) {
+        return callback(err, t, videoInstance)
+      })
+    },
+
+    function findOrCreateTags (t, videoInstance, callback) {
+      const tags = videoAttributesToUpdate.tags
+
+      db.Tag.findOrCreateTags(tags, t, function (err, tagInstances) {
+        return callback(err, t, videoInstance, tagInstances)
+      })
+    },
+
+    function updateVideoIntoDB (t, videoInstance, tagInstances, callback) {
+      const options = { transaction: t }
+
+      videoInstance.set('name', videoAttributesToUpdate.name)
+      videoInstance.set('description', videoAttributesToUpdate.description)
+      videoInstance.set('infoHash', videoAttributesToUpdate.infoHash)
+      videoInstance.set('duration', videoAttributesToUpdate.duration)
+      videoInstance.set('createdAt', videoAttributesToUpdate.createdAt)
+      videoInstance.set('updatedAt', videoAttributesToUpdate.updatedAt)
+      videoInstance.set('extname', videoAttributesToUpdate.extname)
+
+      videoInstance.save(options).asCallback(function (err) {
+        return callback(err, t, videoInstance, tagInstances)
+      })
+    },
+
+    function associateTagsToVideo (t, videoInstance, tagInstances, callback) {
+      const options = { transaction: t }
+
+      videoInstance.setTags(tagInstances, options).asCallback(function (err) {
+        return callback(err, t)
+      })
+    }
+
+  ], function (err, t) {
+    if (err) {
+      // This is just a debug because we will retry the insert
+      logger.debug('Cannot update the remote video.', { error: err })
+
+      // Abort transaction?
+      if (t) t.rollback()
+
+      return finalCallback(err)
+    }
+
+   // Commit transaction
+    t.commit().asCallback(function (err) {
+      if (err) return finalCallback(err)
+
+      logger.info('Remote video %s updated', videoAttributesToUpdate.name)
+      return finalCallback(null)
+    })
+  })
+}
+
+function removeRemoteVideo (videoToRemoveData, fromPod, callback) {
+  // We need the instance because we have to remove some other stuffs (thumbnail etc)
+  fetchVideo(fromPod.host, videoToRemoveData.remoteId, function (err, video) {
+    // Do not return the error, continue the process
+    if (err) return callback(null)
+
+    logger.debug('Removing remote video %s.', video.remoteId)
+    video.destroy().asCallback(function (err) {
+      // Do not return the error, continue the process
+      if (err) {
+        logger.error('Cannot remove remote video with id %s.', videoToRemoveData.remoteId, { error: err })
+      }
+
+      return callback(null)
+    })
+  })
+}
+
+function reportAbuseRemoteVideo (reportData, fromPod, callback) {
+  db.Video.load(reportData.videoRemoteId, function (err, video) {
+    if (err || !video) {
+      if (!err) err = new Error('video not found')
+
+      logger.error('Cannot load video from id.', { error: err, id: reportData.videoRemoteId })
+      // Do not return the error, continue the process
+      return callback(null)
+    }
+
+    logger.debug('Reporting remote abuse for video %s.', video.id)
+
+    const videoAbuseData = {
+      reporterUsername: reportData.reporterUsername,
+      reason: reportData.reportReason,
+      reporterPodId: fromPod.id,
+      videoId: video.id
+    }
+
+    db.VideoAbuse.create(videoAbuseData).asCallback(function (err) {
+      if (err) {
+        logger.error('Cannot create remote abuse video.', { error: err })
+      }
+
+      return callback(null)
+    })
+  })
+}
+
+function fetchVideo (podHost, remoteId, callback) {
+  db.Video.loadByHostAndRemoteId(podHost, remoteId, function (err, video) {
+    if (err || !video) {
+      if (!err) err = new Error('video not found')
+
+      logger.error('Cannot load video from host and remote id.', { error: err, podHost, remoteId })
+      return callback(err)
+    }
+
+    return callback(null, video)
+  })
+}