adding redis unix connection

server/lib/job-queue/job-queue.ts

@@ -1,6 +1,7 @@
 import * as Bull from 'bull'
 import { JobState, JobType } from '../../../shared/models'
 import { logger } from '../../helpers/logger'
+import { Redis } from '../redis'
 import { CONFIG, JOB_ATTEMPTS, JOB_COMPLETED_LIFETIME, JOB_CONCURRENCY, JOB_REQUEST_TTL } from '../../initializers'
 import { ActivitypubHttpBroadcastPayload, processActivityPubHttpBroadcast } from './handlers/activitypub-http-broadcast'
 import { ActivitypubHttpFetcherPayload, processActivityPubHttpFetcher } from './handlers/activitypub-http-fetcher'
@@ -63,12 +64,7 @@ class JobQueue {
     this.jobRedisPrefix = 'bull-' + CONFIG.WEBSERVER.HOST
     const queueOptions = {
       prefix: this.jobRedisPrefix,
-      redis: {
-        host: CONFIG.REDIS.HOSTNAME,
-        port: CONFIG.REDIS.PORT,
-        auth: CONFIG.REDIS.AUTH,
-        db: CONFIG.REDIS.DB
-      }
+      redis: Redis.getRedisClient()
     }
 
     for (const handlerName of Object.keys(handlers)) {

server/lib/redis.ts

@@ -24,11 +24,7 @@ class Redis {
     if (this.initialized === true) return
     this.initialized = true
 
-    this.client = createClient({
-      host: CONFIG.REDIS.HOSTNAME,
-      port: CONFIG.REDIS.PORT,
-      db: CONFIG.REDIS.DB
-    })
+    this.client = createClient(Redis.getRedisClient())
 
     this.client.on('error', err => {
       logger.error('Error in Redis client.', { err })
@@ -42,6 +38,16 @@ class Redis {
     this.prefix = 'redis-' + CONFIG.WEBSERVER.HOST + '-'
   }
 
+  static getRedisClient () {
+    return Object.assign({},
+      (CONFIG.REDIS.AUTH && CONFIG.REDIS.AUTH != null) ? { password: CONFIG.REDIS.AUTH } : {},
+      (CONFIG.REDIS.DB) ? { db: CONFIG.REDIS.DB } : {},
+      (CONFIG.REDIS.HOSTNAME && CONFIG.REDIS.PORT) ?
+      { host: CONFIG.REDIS.HOSTNAME, port: CONFIG.REDIS.PORT } :
+      { path: CONFIG.REDIS.SOCKET }
+    )
+  }
+
   async setResetPasswordVerificationString (userId: number) {
     const generatedString = await generateRandomString(32)