Check for a running redis in script/server

Fixes #5267

closes #7685

Changelog.md

@@ -5,6 +5,7 @@
 ## Bug fixes
 
 ## Features
+* Check if redis is running in script/server [#7685](https://github.com/diaspora/diaspora/pull/7685)
 
 # 0.7.2.0
 

script/server

@@ -108,7 +108,8 @@ vars=$(bin/bundle exec ruby ./script/get_config.rb \
   workers=server.sidekiq_workers \
   chat=chat.enabled \
   chat_server=chat.server.enabled \
-  chat_bosh_proxy=chat.server.bosh.proxy
+  chat_bosh_proxy=chat.server.bosh.proxy \
+  redis_url=environment.redis
 )
 on_failure "Couldn't parse config/diaspora.yml!"
 eval "$vars"
@@ -158,6 +159,19 @@ application, run:
     bin/rake assets:precompile"
 fi
 
+# Check if redis is running
+if [ "$single_process_mode" = "false" ]
+then
+  if [ -n "$redis_url" ]
+  then
+    redis_param="url: '$redis_url'"
+  fi 
+  if [ "$(bin/bundle exec ruby -e "require 'redis'; puts Redis.new($redis_param).ping" 2> /dev/null)" != "PONG" ]
+  then
+    fatal "Can't connect to redis. Please check if it's running and if environment.redis is configured correctly in config/diaspora.yml."
+  fi
+fi
+
 # Check for old curl versions (see https://github.com/diaspora/diaspora/issues/4202)
 if [ `curl -V | grep AsynchDNS | wc -l` -ne 1 ]
 then