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|
'use strict'
const each = require('async/each')
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 validators = middlewares.validators.remote
const logger = require('../../helpers/logger')
const router = express.Router()
router.post('/videos',
validators.signature,
secureMiddleware.checkSignature,
validators.remoteVideos,
remoteVideos
)
// ---------------------------------------------------------------------------
module.exports = router
// ---------------------------------------------------------------------------
function remoteVideos (req, res, next) {
const requests = req.body.data
const fromHost = req.body.signature.host
// We need to process in the same order to keep consistency
// TODO: optimization
eachSeries(requests, function (request, callbackEach) {
const videoData = request.data
if (request.type === 'add') {
addRemoteVideo(videoData, fromHost, callbackEach)
} else if (request.type === 'remove') {
removeRemoteVideo(videoData, fromHost, callbackEach)
} else {
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()
}
function addRemoteVideo (videoToCreateData, fromHost, finalCallback) {
logger.debug('Adding remote video "%s".', videoToCreateData.name)
waterfall([
function startTransaction (callback) {
db.sequelize.transaction().asCallback(function (err, t) {
return callback(err, t)
})
},
function findOrCreatePod (t, callback) {
const query = {
where: {
host: fromHost
},
defaults: {
host: fromHost
},
transaction: t
}
db.Pod.findOrCreate(query).asCallback(function (err, result) {
// [ instance, wasCreated ]
return callback(err, t, result[0])
})
},
function findOrCreateAuthor (t, pod, callback) {
const username = videoToCreateData.author
const query = {
where: {
name: username,
podId: pod.id
},
defaults: {
name: username,
podId: pod.id
},
transaction: t
}
db.Author.findOrCreate(query).asCallback(function (err, result) {
// [ instance, wasCreated ]
return callback(err, t, result[0])
})
},
function findOrCreateTags (t, author, callback) {
const tags = videoToCreateData.tags
const tagInstances = []
each(tags, function (tag, callbackEach) {
const query = {
where: {
name: tag
},
defaults: {
name: tag
},
transaction: t
}
db.Tag.findOrCreate(query).asCallback(function (err, res) {
if (err) return callbackEach(err)
// res = [ tag, isCreated ]
const tag = res[0]
tagInstances.push(tag)
return callbackEach()
})
}, function (err) {
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
}
const video = db.Video.build(videoData)
return callback(null, t, tagInstances, video)
},
function generateThumbnail (t, tagInstances, video, callback) {
db.Video.generateThumbnailFromBase64(video, videoToCreateData.thumbnailBase64, function (err) {
if (err) {
logger.error('Cannot generate thumbnail from base 64 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) {
logger.error('Cannot insert the remote video.')
// Abort transaction?
if (t) t.rollback()
return finalCallback(err)
}
// Commit transaction
t.commit()
return finalCallback()
})
}
function removeRemoteVideo (videoToRemoveData, fromHost, callback) {
// TODO: use bulkDestroy?
// We need the list because we have to remove some other stuffs (thumbnail etc)
db.Video.listByHostAndRemoteId(fromHost, videoToRemoveData.remoteId, function (err, videosList) {
if (err) {
logger.error('Cannot list videos from host and remote id.', { error: err.message })
return callback(err)
}
if (videosList.length === 0) {
logger.error('No remote video was found for this pod.', { remoteId: videoToRemoveData.remoteId, podHost: fromHost })
}
each(videosList, function (video, callbackEach) {
logger.debug('Removing remote video %s.', video.remoteId)
video.destroy().asCallback(callbackEach)
}, callback)
})
}
|
