From a083604d1d9d8f53c1d69003591e1cab69c620a3 Mon Sep 17 00:00:00 2001
From: MIYAGI Hikaru <hcmiya@users.noreply.github.com>
Date: Sat, 25 Aug 2018 01:16:53 +0900
Subject: [PATCH] Support UNIX domain socket for streaming service without
 using PORT (#8217)

* Support UNIX domain socket for streaming service without using PORT

The use of UNIX domain socket for streaming service was not officially supported,
but it was made unofficial to use by setting a path to PORT.
From now on, SOCKET will be used just like setting for puma.

* Hundle relative path
---
 streaming/index.js | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/streaming/index.js b/streaming/index.js
index d7bfa6542..b5f6dbd87 100644
--- a/streaming/index.js
+++ b/streaming/index.js
@@ -9,6 +9,7 @@ const log = require('npmlog');
 const url = require('url');
 const WebSocket = require('uws');
 const uuid = require('uuid');
+const fs = require('fs');
 
 const env = process.env.NODE_ENV || 'development';
 
@@ -70,6 +71,9 @@ const redisUrlToClient = (defaultConfig, redisUrl) => {
 const numWorkers = +process.env.STREAMING_CLUSTER_NUM || (env === 'development' ? 1 : Math.max(os.cpus().length - 1, 1));
 
 const startMaster = () => {
+  if (!process.env.SOCKET && process.env.PORT && isNaN(+process.env.PORT)) {
+    log.warn('UNIX domain socket is now supported by using SOCKET. Please migrate from PORT hack.');
+  }
   log.info(`Starting streaming API server master with ${numWorkers} workers`);
 };
 
@@ -574,9 +578,16 @@ const startWorker = (workerId) => {
     });
   }, 30000);
 
-  server.listen(process.env.PORT || 4000, process.env.BIND || '0.0.0.0', () => {
-    log.info(`Worker ${workerId} now listening on ${server.address().address}:${server.address().port}`);
-  });
+  if (process.env.SOCKET || process.env.PORT && isNaN(+process.env.PORT)) {
+    server.listen(process.env.SOCKET || process.env.PORT, () => {
+      fs.chmodSync(server.address(), 0o666);
+      log.info(`Worker ${workerId} now listening on ${server.address()}`);
+    });
+  } else {
+    server.listen(+process.env.PORT || 4000, process.env.BIND || '0.0.0.0', () => {
+      log.info(`Worker ${workerId} now listening on ${server.address().address}:${server.address().port}`);
+    });
+  }
 
   const onExit = () => {
     log.info(`Worker ${workerId} exiting, bye bye`);