Index and serve channels

config/default.yaml

@@ -12,6 +12,7 @@ elastic_search:
   port: 9200
   indexes:
     videos: 'peertube-index-videos'
+    channels: 'peertube-index-channels'
 
 log:
   level: 'debug' # debug/info/warning/error

config/test.yaml

@@ -1,3 +1,4 @@
 elastic_search:
   indexes:
     videos: 'peertube-index-videos-test1'
+    channels: 'peertube-index-channels-test1'

server.ts

@@ -1,8 +1,4 @@
 import { isTestInstance } from './server/helpers/core-utils'
-if (isTestInstance()) {
-  require('source-map-support').install()
-}
-
 import * as bodyParser from 'body-parser'
 import * as express from 'express'
 import * as cors from 'cors'
@@ -12,6 +8,11 @@ import { logger } from './server/helpers/logger'
 import { API_VERSION, CONFIG } from './server/initializers/constants'
 import { VideosIndexer } from './server/lib/schedulers/videos-indexer'
 import { initVideosIndex } from './server/lib/elastic-search-videos'
+import { initChannelsIndex } from './server/lib/elastic-search-channels'
+
+if (isTestInstance()) {
+  require('source-map-support').install()
+}
 
 const app = express()
 
@@ -57,7 +58,10 @@ app.listen(CONFIG.LISTEN.PORT, async () => {
   logger.info('Server listening on port %d', CONFIG.LISTEN.PORT)
 
   try {
-    await initVideosIndex()
+    await Promise.all([
+      initVideosIndex(),
+      initChannelsIndex()
+    ])
   } catch (err) {
     logger.error('Cannot init videos index.', { err })
     process.exit(-1)
@@ -65,4 +69,5 @@ app.listen(CONFIG.LISTEN.PORT, async () => {
 
   VideosIndexer.Instance.enable()
   VideosIndexer.Instance.execute()
+    .catch(err => logger.error('Cannot run video indexer', { err }))
 })

server/controllers/api/index.ts

@@ -1,10 +1,12 @@
 import * as express from 'express'
 import { badRequest } from '../../helpers/utils'
-import { searchRouter } from './search-videos'
+import { searchVideosRouter } from './search-videos'
+import { searchChannelsRouter } from './search-channels'
 
 const apiRouter = express.Router()
 
-apiRouter.use('/', searchRouter)
+apiRouter.use('/', searchVideosRouter)
+apiRouter.use('/', searchChannelsRouter)
 apiRouter.use('/ping', pong)
 apiRouter.use('/*', badRequest)
 

server/controllers/api/search-channels.ts

@@ -0,0 +1,34 @@
+import * as express from 'express'
+import { paginationValidator } from '../../middlewares/validators/pagination'
+import { setDefaultPagination } from '../../middlewares/pagination'
+import { asyncMiddleware } from '../../middlewares/async'
+import { channelsSearchSortValidator } from '../../middlewares/validators/sort'
+import { videoChannelsSearchValidator } from '../../middlewares/validators/search'
+import { setDefaultSearchSort } from '../../middlewares/sort'
+import { formatChannelForAPI, queryChannels } from '../../lib/elastic-search-channels'
+
+const searchChannelsRouter = express.Router()
+
+searchChannelsRouter.get('/search/video-channels',
+  paginationValidator,
+  setDefaultPagination,
+  channelsSearchSortValidator,
+  setDefaultSearchSort,
+  videoChannelsSearchValidator,
+  asyncMiddleware(searchChannels)
+)
+
+// ---------------------------------------------------------------------------
+
+export { searchChannelsRouter }
+
+// ---------------------------------------------------------------------------
+
+async function searchChannels (req: express.Request, res: express.Response) {
+  const resultList = await queryChannels(req.query)
+
+  return res.json({
+    total: resultList.total,
+    data: resultList.data.map(v => formatChannelForAPI(v, req.query.fromHost))
+  })
+}

server/controllers/api/search-videos.ts

@@ -7,9 +7,9 @@ import { videosSearchSortValidator } from '../../middlewares/validators/sort'
 import { commonVideosFiltersValidator, videosSearchValidator } from '../../middlewares/validators/search'
 import { setDefaultSearchSort } from '../../middlewares/sort'
 
-const searchRouter = express.Router()
+const searchVideosRouter = express.Router()
 
-searchRouter.get('/search/videos',
+searchVideosRouter.get('/search/videos',
   paginationValidator,
   setDefaultPagination,
   videosSearchSortValidator,
@@ -21,7 +21,7 @@ searchRouter.get('/search/videos',
 
 // ---------------------------------------------------------------------------
 
-export { searchRouter }
+export { searchVideosRouter }
 
 // ---------------------------------------------------------------------------
 

server/helpers/elastic-search.ts

@@ -1,24 +1,120 @@
-import { Client } from '@elastic/elasticsearch'
+import { ApiResponse, Client } from '@elastic/elasticsearch'
 import { CONFIG } from '../initializers/constants'
+import { logger } from './logger'
+import { flatMap } from 'lodash'
+import { IndexableDoc } from '../types/elastic-search.model'
 
 const elasticSearch = new Client({ node: 'http://' + CONFIG.ELASTIC_SEARCH.HOSTNAME + ':' + CONFIG.ELASTIC_SEARCH.PORT })
 
 function buildSort (value: string) {
-  let field: string
+  let sortField: string
   let direction: 'asc' | 'desc'
 
   if (value.substring(0, 1) === '-') {
     direction = 'desc'
-    field = value.substring(1)
+    sortField = value.substring(1)
   } else {
     direction = 'asc'
-    field = value
+    sortField = value
   }
 
-  return { direction, field }
+  const field = sortField === 'match'
+    ? '_score'
+    : sortField
+
+  return [
+    {
+      [field]: { order: direction }
+    }
+  ]
+}
+
+function buildIndex (name: string, mapping: object) {
+  logger.info('Initialize %s Elastic Search index.', name)
+
+  return elasticSearch.indices.create({
+    index: name,
+    body: {
+      settings: {
+        number_of_shards: 1,
+        number_of_replicas: 1
+      },
+      mappings: {
+        properties: mapping
+      }
+    }
+  }).catch(err => {
+    if (err.name === 'ResponseError' && err.meta?.body?.error.root_cause[0]?.type === 'resource_already_exists_exception') return
+
+    throw err
+  })
+}
+
+async function indexDocuments <T extends IndexableDoc> (options: {
+  objects: T[]
+  formatter: (o: T) => any
+  replace: boolean
+  index: string
+}) {
+  const { objects, formatter, replace, index } = options
+
+  const elIdIndex: { [elId: string]: T } = {}
+
+  for (const object of objects) {
+    elIdIndex[object.elasticSearchId] = object
+  }
+
+  const method = replace ? 'index' : 'update'
+
+  const body = flatMap(objects, v => {
+    const doc = formatter(v)
+
+    const options = replace
+      ? doc
+      : { doc, doc_as_upsert: true }
+
+    return [
+      {
+        [method]: {
+          _id: v.elasticSearchId,
+          _index: index
+        }
+      },
+      options
+    ]
+  })
+
+  const result = await elasticSearch.bulk({
+    index,
+    body
+  })
+
+  const resultBody = result.body
+
+  if (resultBody.errors === true) {
+    const msg = 'Cannot insert data in elastic search.'
+    logger.error(msg, { err: resultBody })
+    throw new Error(msg)
+  }
+
+  const created: T[] = result.body.items
+                                  .map(i => i[method])
+                                  .filter(i => i.result === 'created')
+                                  .map(i => elIdIndex[i._id])
+
+  return { created }
+}
+
+function extractQueryResult (result: ApiResponse<any, any>) {
+  const hits = result.body.hits
+
+  return { total: hits.total.value, data: hits.hits.map(h => h._source) }
 }
 
 export {
   elasticSearch,
-  buildSort
+  indexDocuments,
+  buildSort,
+  extractQueryResult,
+  buildIndex
 }

server/initializers/constants.ts

@@ -11,7 +11,8 @@ const CONFIG = {
     HOSTNAME: config.get<string>('elastic_search.hostname'),
     PORT: config.get<number>('elastic_search.port'),
     INDEXES: {
-      VIDEOS: config.get<string>('elastic_search.indexes.videos')
+      VIDEOS: config.get<string>('elastic_search.indexes.videos'),
+      CHANNELS: config.get<string>('elastic_search.indexes.channels')
     }
   },
   LOG: {
@@ -23,7 +24,8 @@ const CONFIG = {
 }
 
 const SORTABLE_COLUMNS = {
-  VIDEOS_SEARCH: [ 'name', 'duration', 'createdAt', 'publishedAt', 'views', 'likes', 'match' ]
+  VIDEOS_SEARCH: [ 'name', 'duration', 'createdAt', 'publishedAt', 'views', 'likes', 'match' ],
+  CHANNELS_SEARCH: [ 'match', 'displayName', 'createdAt' ]
 }
 
 const PAGINATION_COUNT_DEFAULT = 20

server/lib/elastic-search-avatar.ts

@@ -0,0 +1,43 @@
+import { Avatar } from '@shared/models'
+
+function formatAvatarForAPI (obj: { avatar?: Avatar }) {
+  if (!obj.avatar) return null
+
+  return {
+    path: obj.avatar.path,
+    createdAt: obj.avatar.createdAt,
+    updatedAt: obj.avatar.updatedAt
+  }
+}
+
+function formatAvatarForDB (obj: { avatar?: Avatar }) {
+  if (!obj.avatar) return null
+
+  return {
+    path: obj.avatar.path,
+    createdAt: obj.avatar.createdAt,
+    updatedAt: obj.avatar.updatedAt
+  }
+}
+
+function buildAvatarMapping () {
+  return {
+    path: {
+      type: 'keyword'
+    },
+    createdAt: {
+      type: 'date',
+      format: 'date_optional_time'
+    },
+    updatedAt: {
+      type: 'date',
+      format: 'date_optional_time'
+    }
+  }
+}
+
+export {
+  formatAvatarForAPI,
+  formatAvatarForDB,
+  buildAvatarMapping
+}

server/lib/elastic-search-channels.ts

@@ -0,0 +1,213 @@
+import { CONFIG } from '../initializers/constants'
+import { VideoChannel } from '@shared/models'
+import { buildIndex, buildSort, elasticSearch, extractQueryResult, indexDocuments } from '../helpers/elastic-search'
+import { logger } from '../helpers/logger'
+import { DBChannel, IndexableChannel } from '../types/channel.model'
+import { ChannelsSearchQuery } from '../types/channel-search.model'
+import { buildAvatarMapping, formatAvatarForAPI, formatAvatarForDB } from './elastic-search-avatar'
+
+function initChannelsIndex () {
+  return buildIndex(CONFIG.ELASTIC_SEARCH.INDEXES.CHANNELS, buildChannelsMapping())
+}
+
+async function indexChannels (channels: IndexableChannel[], replace = false) {
+  return indexDocuments({
+    objects: channels,
+    formatter: c => formatChannelForDB(c),
+    replace,
+    index: CONFIG.ELASTIC_SEARCH.INDEXES.CHANNELS
+  })
+}
+
+function refreshChannelsIndex () {
+  return elasticSearch.indices.refresh({ index: CONFIG.ELASTIC_SEARCH.INDEXES.CHANNELS })
+}
+
+async function queryChannels (search: ChannelsSearchQuery) {
+  const bool: any = {}
+
+  if (search.search) {
+    Object.assign(bool, {
+      must: [
+        {
+          multi_match: {
+            query: search.search,
+            fields: [ 'name', 'displayName', 'description' ],
+            fuzziness: 'AUTO'
+          }
+        }
+      ]
+    })
+  }
+
+  const body = {
+    from: search.start,
+    size: search.count,
+    sort: buildSort(search.sort),
+    query: { bool }
+  }
+
+  logger.debug('Will query Elastic Search for channels.', { body })
+
+  const res = await elasticSearch.search({
+    index: CONFIG.ELASTIC_SEARCH.INDEXES.CHANNELS,
+    body
+  })
+
+  return extractQueryResult(res)
+}
+
+export {
+  initChannelsIndex,
+  indexChannels,
+  refreshChannelsIndex,
+  formatChannelForAPI,
+  queryChannels
+}
+
+// ############################################################################
+
+function formatChannelForDB (c: IndexableChannel): DBChannel {
+  return {
+    id: c.id,
+
+    url: c.url,
+    name: c.name,
+    host: c.host,
+
+    avatar: formatAvatarForDB(c),
+
+    displayName: c.displayName,
+
+    indexedAt: new Date(),
+
+    followingCount: c.followingCount,
+    followersCount: c.followersCount,
+    createdAt: c.createdAt,
+    updatedAt: c.updatedAt,
+
+    description: c.description,
+    support: c.support,
+
+    ownerAccount: {
+      id: c.ownerAccount.id,
+      url: c.ownerAccount.url,
+
+      displayName: c.ownerAccount.displayName,
+      description: c.ownerAccount.description,
+      name: c.ownerAccount.name,
+      host: c.ownerAccount.host,
+      followingCount: c.ownerAccount.followingCount,
+      followersCount: c.ownerAccount.followersCount,
+      createdAt: c.ownerAccount.createdAt,
+      updatedAt: c.ownerAccount.updatedAt,
+
+      avatar: formatAvatarForDB(c.ownerAccount)
+    }
+  }
+}
+
+function formatChannelForAPI (c: DBChannel, fromHost?: string): VideoChannel {
+  return {
+    id: c.id,
+
+    url: c.url,
+    name: c.name,
+    host: c.host,
+    followingCount: c.followingCount,
+    followersCount: c.followersCount,
+    createdAt: c.createdAt,
+    updatedAt: c.updatedAt,
+    avatar: formatAvatarForAPI(c),
+
+    displayName: c.displayName,
+    description: c.description,
+    support: c.support,
+    isLocal: fromHost === c.host,
+
+    ownerAccount: {
+      id: c.ownerAccount.id,
+      url: c.ownerAccount.url,
+
+      displayName: c.ownerAccount.displayName,
+      description: c.ownerAccount.description,
+      name: c.ownerAccount.name,
+      host: c.ownerAccount.host,
+      followingCount: c.ownerAccount.followingCount,
+      followersCount: c.ownerAccount.followersCount,
+      createdAt: c.ownerAccount.createdAt,
+      updatedAt: c.ownerAccount.updatedAt,
+
+      avatar: formatAvatarForAPI(c.ownerAccount)
+    }
+  }
+}
+
+function buildChannelOrAccountCommonMapping () {
+  return {
+    id: {
+      type: 'long'
+    },
+
+    url: {
+      type: 'keyword'
+    },
+
+    name: {
+      type: 'text',
+      fields: {
+        raw: {
+          type: 'keyword'
+        }
+      }
+    },
+
+    host: {
+      type: 'keyword'
+    },
+
+    displayName: {
+      type: 'text'
+    },
+
+    avatar: {
+      properties: buildAvatarMapping()
+    },
+
+    followingCount: {
+      type: 'long'
+    },
+    followersCount: {
+      type: 'long'
+    },
+
+    createdAt: {
+      type: 'date',
+      format: 'date_optional_time'
+    },
+    updatedAt: {
+      type: 'date',
+      format: 'date_optional_time'
+    },
+
+    description: {
+      type: 'text'
+    }
+  }
+}
+
+function buildChannelsMapping () {
+  const base = buildChannelOrAccountCommonMapping()
+
+  Object.assign(base, {
+    support: {
+      type: 'keyword'
+    },
+
+    ownerAccount: {
+      properties: buildChannelOrAccountCommonMapping()
+    }
+  })
+
+  return base
+}

server/lib/elastic-search-instances.ts

@@ -0,0 +1,35 @@
+import { elasticSearch } from '../helpers/elastic-search'
+import { CONFIG } from '../initializers/constants'
+import { getRemovedHosts, listIndexInstancesHost } from './instances-index'
+
+async function listIndexInstances () {
+  const res = await elasticSearch.search({
+    index: CONFIG.ELASTIC_SEARCH.INDEXES.VIDEOS,
+    body: {
+      size: 0,
+      aggs: {
+        hosts: {
+          terms: {
+            field: 'host'
+          }
+        }
+      }
+    }
+  })
+
+  return res.body.aggregations.hosts.buckets.map(b => b.key)
+}
+
+async function buildInstanceHosts () {
+  const indexHosts = (await listIndexInstancesHost()).filter(h => h === 'peertube.cpy.re')
+
+  const dbHosts = await listIndexInstances()
+  const removedHosts = getRemovedHosts(dbHosts, indexHosts)
+
+  return { indexHosts, removedHosts }
+}
+
+export {
+  listIndexInstances,
+  buildInstanceHosts
+}

server/lib/elastic-search-videos.ts

@@ -1,100 +1,47 @@
 import { CONFIG } from '../initializers/constants'
 import { DBVideo, DBVideoDetails, IndexableVideo, IndexableVideoDetails } from '../types/video.model'
-import { flatMap } from 'lodash'
-import { Avatar, Video } from '@shared/models'
-import { buildSort, elasticSearch } from '../helpers/elastic-search'
+import { Video } from '@shared/models'
+import { buildIndex, buildSort, elasticSearch, extractQueryResult, indexDocuments } from '../helpers/elastic-search'
 import { VideosSearchQuery } from '../types/video-search.model'
 import { logger } from '../helpers/logger'
+import { buildAvatarMapping, formatAvatarForAPI, formatAvatarForDB } from './elastic-search-avatar'
 
 function initVideosIndex () {
-  logger.info('Initialize %s Elastic Search index.', CONFIG.ELASTIC_SEARCH.INDEXES.VIDEOS)
-
-  return elasticSearch.indices.create({
-    index: CONFIG.ELASTIC_SEARCH.INDEXES.VIDEOS,
-    body: {
-      settings: {
-        number_of_shards: 1,
-        number_of_replicas: 1
-      },
-      mappings: {
-        properties: buildVideosMapping()
-      }
-    }
-  }).catch(err => {
-    if (err.name === 'ResponseError' && err.meta?.body?.error.root_cause[0]?.type === 'resource_already_exists_exception') return
-
-    throw err
-  })
+  return buildIndex(CONFIG.ELASTIC_SEARCH.INDEXES.VIDEOS, buildVideosMapping())
 }
 
 async function indexVideos (videos: IndexableVideo[], replace = false) {
-  const elIdIndex: { [elId: string]: string } = {}
-
-  for (const video of videos) {
-    elIdIndex[video.elasticSearchId] = video.uuid
-  }
-
-  const method = replace ? 'index' : 'update'
-
-  const body = flatMap(videos, v => {
-    const doc = formatVideoForDB(v)
-
-    const options = replace
-      ? doc
-      : { doc, doc_as_upsert: true }
-
-    return [
-      {
-        [method]: {
-          _id: v.elasticSearchId,
-          _index: CONFIG.ELASTIC_SEARCH.INDEXES.VIDEOS
-        }
-      },
-      options
-    ]
+  return indexDocuments({
+    objects: videos,
+    formatter: v => formatVideoForDB(v),
+    replace,
+    index: CONFIG.ELASTIC_SEARCH.INDEXES.VIDEOS
   })
-
-  const result = await elasticSearch.bulk({
-    index: CONFIG.ELASTIC_SEARCH.INDEXES.VIDEOS,
-    body
-  })
-
-  const resultBody = result.body
-
-  if (resultBody.errors === true) {
-    const msg = 'Cannot insert data in elastic search.'
-    logger.error(msg, { err: resultBody })
-    throw new Error(msg)
-  }
-
-  const created: string[] = result.body.items
-                                  .map(i => i[method])
-                                  .filter(i => i.result === 'created')
-                                  .map(i => elIdIndex[i._id])
-
-  return { created }
 }
 
 function refreshVideosIndex () {
   return elasticSearch.indices.refresh({ index: CONFIG.ELASTIC_SEARCH.INDEXES.VIDEOS })
 }
 
-async function listIndexInstances () {
-  const res = await elasticSearch.search({
+function removeVideosFromHosts (hosts: string[]) {
+  if (hosts.length === 0) return
+
+  logger.info('Will remove videos from hosts.', { hosts })
+
+  return elasticSearch.delete_by_query({
     index: CONFIG.ELASTIC_SEARCH.INDEXES.VIDEOS,
     body: {
-      size: 0,
-      aggs: {
-        hosts: {
-          terms: {
-            field: 'host'
+      query: {
+        bool: {
+          filter: {
+            terms: {
+              host: hosts
+            }
           }
         }
       }
     }
   })
-
-  return res.body.aggregations.hosts.buckets.map(b => b.key)
 }
 
 async function queryVideos (search: VideosSearchQuery) {
@@ -230,7 +177,7 @@ async function queryVideos (search: VideosSearchQuery) {
   const body = {
     from: search.start,
     size: search.count,
-    sort: buildVideosSort(search.sort),
+    sort: buildSort(search.sort),
     query: { bool }
   }
 
@@ -241,35 +188,20 @@ async function queryVideos (search: VideosSearchQuery) {
     body
   })
 
-  const hits = res.body.hits
-  return { total: hits.total.value, data: hits.hits.map(h => h._source) }
+  return extractQueryResult(res)
 }
 
 export {
   indexVideos,
   queryVideos,
   refreshVideosIndex,
+  removeVideosFromHosts,
   initVideosIndex,
-  listIndexInstances,
   formatVideoForAPI
 }
 
 // ############################################################################
 
-function buildVideosSort (sort: string) {
-  const { direction, field: sortField } = buildSort(sort)
-
-  const field = sortField === 'match'
-    ? '_score'
-    : sortField
-
-  return [
-    {
-      [field]: { order: direction }
-    }
-  ]
-}
-
 function formatVideoForDB (v: IndexableVideo | IndexableVideoDetails): DBVideo | DBVideoDetails {
   return {
     id: v.id,
@@ -336,16 +268,6 @@ function formatVideoForDB (v: IndexableVideo | IndexableVideoDetails): DBVideo |
   }
 }
 
-function formatAvatarForDB (obj: { avatar?: Avatar }) {
-  if (!obj.avatar) return null
-
-  return {
-    path: obj.avatar.path,
-    createdAt: obj.avatar.createdAt,
-    updatedAt: obj.avatar.updatedAt
-  }
-}
-
 function formatVideoForAPI (v: DBVideo, fromHost?: string): Video {
   return {
     id: v.id,
@@ -409,16 +331,6 @@ function formatVideoForAPI (v: DBVideo, fromHost?: string): Video {
   }
 }
 
-function formatAvatarForAPI (obj: { avatar?: Avatar }) {
-  if (!obj.avatar) return null
-
-  return {
-    path: obj.avatar.path,
-    createdAt: obj.avatar.createdAt,
-    updatedAt: obj.avatar.updatedAt
-  }
-}
-
 function buildChannelOrAccountMapping () {
   return {
     id: {
@@ -444,19 +356,7 @@ function buildChannelOrAccountMapping () {
     },
 
     avatar: {
-      properties: {
-        path: {
-          type: 'keyword'
-        },
-        createdAt: {
-          type: 'date',
-          format: 'date_optional_time'
-        },
-        updatedAt: {
-          type: 'date',
-          format: 'date_optional_time'
-        }
-      }
+      properties: buildAvatarMapping()
     }
   }
 }

server/lib/peertube-instance.ts

@@ -0,0 +1,60 @@
+import { IndexableVideo } from '../types/video.model'
+import { doRequest } from '../helpers/requests'
+import { ResultList, Video, VideoChannel, VideoDetails } from '@shared/models'
+import { IndexableChannel } from '../types/channel.model'
+import { INDEXER_COUNT } from '../initializers/constants'
+import { IndexableDoc } from '../types/elastic-search.model'
+
+async function getVideo (host: string, uuid: string): Promise<IndexableVideo> {
+  const url = 'https://' + host + '/api/v1/videos/' + uuid
+
+  const res = await doRequest<VideoDetails>({
+    uri: url,
+    json: true
+  })
+
+  return prepareVideoForDB(res.body, host)
+}
+
+async function getChannel (host: string, name: string): Promise<IndexableChannel> {
+  const url = 'https://' + host + '/api/v1/video-channels/' + name
+
+  const res = await doRequest<VideoChannel>({
+    uri: url,
+    json: true
+  })
+
+  return prepareChannelForDB(res.body, host)
+}
+
+async function getVideos (host: string, start: number): Promise<IndexableVideo[]> {
+  const url = 'https://' + host + '/api/v1/videos'
+
+  const res = await doRequest<ResultList<Video>>({
+    uri: url,
+    qs: {
+      start,
+      filter: 'local',
+      skipCount: true,
+      count: INDEXER_COUNT.VIDEOS
+    },
+    json: true
+  })
+
+  return res.body.data.map(v => prepareVideoForDB(v, host))
+}
+
+function prepareVideoForDB <T extends Video> (video: T, host: string): T & IndexableDoc {
+  return Object.assign(video, { elasticSearchId: host + video.id, host })
+}
+
+function prepareChannelForDB <T extends VideoChannel> (channel: T, host: string): T & IndexableDoc {
+  return Object.assign(channel, { elasticSearchId: host + channel.id, host })
+}
+
+export {
+  getVideo,
+  getChannel,
+  getVideos,
+  prepareChannelForDB
+}

server/lib/schedulers/videos-indexer.ts

@@ -1,17 +1,16 @@
 import { AbstractScheduler } from './abstract-scheduler'
-import { CONFIG, INDEXER_COUNT, SCHEDULER_INTERVALS_MS } from '../../initializers/constants'
-import { doRequest } from '../../helpers/requests'
+import { INDEXER_COUNT, SCHEDULER_INTERVALS_MS } from '../../initializers/constants'
 import { logger } from '../../helpers/logger'
-import { ResultList } from '../../../PeerTube/shared/models/result-list.model'
-import { Video, VideoDetails } from '../../../PeerTube/shared/models/videos/video.model'
-import { indexVideos, listIndexInstances, refreshVideosIndex } from '../elastic-search-videos'
-import { IndexableVideo, IndexableDoc } from '../../types/video.model'
+import { indexVideos, refreshVideosIndex, removeVideosFromHosts } from '../elastic-search-videos'
+import { IndexableVideo } from '../../types/video.model'
 import { inspect } from 'util'
-import { getRemovedHosts, listIndexInstancesHost } from '../instances-index'
-import { elasticSearch } from '../../helpers/elastic-search'
 import { AsyncQueue, queue } from 'async'
+import { buildInstanceHosts } from '../elastic-search-instances'
+import { getChannel, getVideo, getVideos } from '../peertube-instance'
+import { indexChannels, refreshChannelsIndex } from '../elastic-search-channels'
 
 type GetVideoQueueParam = { host: string, uuid: string }
+type GetChannelQueueParam = { host: string, name: string }
 
 export class VideosIndexer extends AbstractScheduler {
 
@@ -19,12 +18,13 @@ export class VideosIndexer extends AbstractScheduler {
 
   protected schedulerIntervalMs = SCHEDULER_INTERVALS_MS.videosIndexer
 
-  private readonly getVideoQueue: AsyncQueue<GetVideoQueueParam>
+  private readonly indexVideoQueue: AsyncQueue<GetVideoQueueParam>
+  private readonly indexChannelQueue: AsyncQueue<GetChannelQueueParam>
 
   private constructor () {
     super()
 
-    this.getVideoQueue = queue<GetVideoQueueParam, Error>((task, cb) => {
+    this.indexVideoQueue = queue<GetVideoQueueParam, Error>((task, cb) => {
       this.indexSpecificVideo(task.host, task.uuid)
         .then(() => cb())
         .catch(err => {
@@ -32,10 +32,28 @@ export class VideosIndexer extends AbstractScheduler {
           cb()
         })
     })
+
+    this.indexChannelQueue = queue<GetChannelQueueParam, Error>((task, cb) => {
+      this.indexSpecificChannel(task.host, task.name)
+          .then(() => cb())
+          .catch(err => {
+            logger.error('Error in index specific channel.', { err: inspect(err) })
+            cb()
+          })
+    })
+
+    this.indexChannelQueue.drain(async () => {
+      logger.info('Refresh channels index.')
+      await refreshChannelsIndex()
+    })
   }
 
   scheduleVideoIndexation (host: string, uuid: string) {
-    this.getVideoQueue.push({ uuid, host })
+    this.indexVideoQueue.push({ uuid, host })
+  }
+
+  scheduleChannelIndexation (host: string, name: string) {
+    this.indexChannelQueue.push({ name, host })
   }
 
   protected async internalExecute () {
@@ -43,11 +61,10 @@ export class VideosIndexer extends AbstractScheduler {
   }
 
   private async runVideosIndexer () {
-    const dbHosts = await listIndexInstances()
-    const indexHosts = (await listIndexInstancesHost()).filter(h => h === 'peertube.cpy.re')
+    const { indexHosts, removedHosts } = await buildInstanceHosts()
+    const channelsToSync = new Set<string>()
 
-    const hostsToRemove = getRemovedHosts(dbHosts, indexHosts)
-    await this.removeVideosFromHosts(hostsToRemove)
+    await removeVideosFromHosts(removedHosts)
 
     for (const host of indexHosts) {
       try {
@@ -55,7 +72,7 @@ export class VideosIndexer extends AbstractScheduler {
         let start = 0
 
         do {
-          videos = await this.getVideos(host, start)
+          videos = await getVideos(host, start)
           start += videos.length
 
           logger.debug('Getting %d results from %s (from = %d).', videos.length, host, start)
@@ -65,12 +82,16 @@ export class VideosIndexer extends AbstractScheduler {
 
             // Fetch complete video foreach created video (to get tags)
             for (const c of created) {
-              this.scheduleVideoIndexation(host, c)
+              this.scheduleVideoIndexation(host, c.uuid)
             }
+
+            videos.forEach(v => channelsToSync.add(v.channel.name))
           }
         } while (videos.length === INDEXER_COUNT.VIDEOS && start < 500)
 
         logger.info('Added video data from %s.', host)
+
+        channelsToSync.forEach(c => this.scheduleChannelIndexation(host, c))
       } catch (err) {
         console.error(inspect(err, { depth: 10 }))
         logger.warn('Cannot index videos from %s.', host, { err })
@@ -80,65 +101,20 @@ export class VideosIndexer extends AbstractScheduler {
     await refreshVideosIndex()
   }
 
-  private async getVideos (host: string, start: number): Promise<IndexableVideo[]> {
-    const url = 'https://' + host + '/api/v1/videos'
-
-    const res = await doRequest<ResultList<Video>>({
-      uri: url,
-      qs: {
-        start,
-        filter: 'local',
-        skipCount: true,
-        count: INDEXER_COUNT.VIDEOS
-      },
-      json: true
-    })
-
-    return res.body.data.map(v => this.prepareVideoForDB(v, host))
-  }
-
-  private async getVideo (host: string, uuid: string): Promise<IndexableVideo> {
-    const url = 'https://' + host + '/api/v1/videos/' + uuid
-
-    const res = await doRequest<VideoDetails>({
-      uri: url,
-      json: true
-    })
-
-    return this.prepareVideoForDB(res.body, host)
-  }
-
-  private removeVideosFromHosts (hosts: string[]) {
-    if (hosts.length === 0) return
-
-    logger.info('Will remove videos from hosts.', { hosts })
-
-    return elasticSearch.delete_by_query({
-      index: CONFIG.ELASTIC_SEARCH.INDEXES.VIDEOS,
-      body: {
-        query: {
-          bool: {
-            filter: {
-              terms: {
-                host: hosts
-              }
-            }
-          }
-        }
-      }
-    })
-  }
-
   private async indexSpecificVideo (host: string, uuid: string) {
-    const video = await this.getVideo(host, uuid)
+    const video = await getVideo(host, uuid)
 
     logger.info('Indexing specific video %s of %s.', uuid, host)
 
     await indexVideos([ video ], true)
   }
 
-  private prepareVideoForDB <T extends Video> (video: T, host: string): T & IndexableDoc {
-    return Object.assign(video, { elasticSearchId: host + video.id, host })
+  private async indexSpecificChannel (host: string, name: string) {
+    const channel = await getChannel(host, name)
+
+    logger.info('Indexing specific channel %s@%s.', name, host)
+
+    await indexChannels([ channel ], true)
   }
 
   static get Instance () {

server/middlewares/validators/search.ts

@@ -60,9 +60,22 @@ const videosSearchValidator = [
   }
 ]
 
+const videoChannelsSearchValidator = [
+  query('search').not().isEmpty().withMessage('Should have a valid search'),
+
+  (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    logger.debug('Checking video channels search query', { parameters: req.query })
+
+    if (areValidationErrors(req, res)) return
+
+    return next()
+  }
+]
+
 // ---------------------------------------------------------------------------
 
 export {
+  videoChannelsSearchValidator,
   commonVideosFiltersValidator,
   videosSearchValidator
 }

server/middlewares/validators/sort.ts

@@ -2,11 +2,14 @@ import { SORTABLE_COLUMNS } from '../../initializers/constants'
 import { checkSort, createSortableColumns } from './utils'
 
 const SORTABLE_VIDEOS_SEARCH_COLUMNS = createSortableColumns(SORTABLE_COLUMNS.VIDEOS_SEARCH)
+const SORTABLE_CHANNELS_SEARCH_COLUMNS = createSortableColumns(SORTABLE_COLUMNS.CHANNELS_SEARCH)
 
 const videosSearchSortValidator = checkSort(SORTABLE_VIDEOS_SEARCH_COLUMNS)
+const channelsSearchSortValidator = checkSort(SORTABLE_VIDEOS_SEARCH_COLUMNS)
 
 // ---------------------------------------------------------------------------
 
 export {
-  videosSearchSortValidator
+  videosSearchSortValidator,
+  channelsSearchSortValidator
 }

server/types/channel-search.model.ts

@@ -0,0 +1,5 @@
+import {
+  VideoChannelsSearchQuery as PeerTubeChannelsSearchQuery
+} from '../../PeerTube/shared/models/search/video-channels-search-query.model'
+
+export type ChannelsSearchQuery = PeerTubeChannelsSearchQuery

server/types/channel.model.ts

@@ -0,0 +1,16 @@
+import { IndexableDoc } from './elastic-search.model'
+import { VideoChannel, VideoChannelSummary } from '@shared/models'
+
+export interface IndexableChannelSummary extends VideoChannelSummary, IndexableDoc {
+}
+
+export interface IndexableChannel extends VideoChannel, IndexableDoc {
+}
+
+export interface DBChannel extends Omit<VideoChannel, 'isLocal'> {
+  indexedAt: Date
+}
+
+export interface DBChannelSummary extends VideoChannelSummary {
+  indexedAt: Date
+}

server/types/elastic-search.model.ts

@@ -0,0 +1,4 @@
+export interface IndexableDoc {
+  elasticSearchId: string
+  host: string
+}

server/types/video.model.ts

@@ -1,9 +1,5 @@
 import { Video, VideoDetails } from '@shared/models/videos/video.model'
-
-export interface IndexableDoc {
-  elasticSearchId: string
-  host: string
-}
+import { IndexableDoc } from './elastic-search.model'
 
 export interface IndexableVideo extends Video, IndexableDoc {
 }