support using custom redis database, fixes #173

config.yml.example

@@ -31,6 +31,7 @@ redis:
   port: 6379
   # pass: redispass # Allows you to specify the password for Redis
   # socket: /tmp/redis.socket # Only define this if you want to use sockets
+  database: 0
   namespace: resque:gitlab
 
 # Log file.

lib/gitlab_config.rb

@@ -54,13 +54,14 @@ class GitlabConfig
       # for users that haven't updated their configuration
       %W(env -i redis-cli)
     else
+      redis['database'] ||= 0
       if redis.has_key?("socket")
-        %W(#{redis['bin']} -s #{redis['socket']})
+        %W(#{redis['bin']} -s #{redis['socket']} -n #{redis['database']})
       else
         if redis.has_key?("pass")
-          %W(#{redis['bin']} -h #{redis['host']} -p #{redis['port']} -a #{redis['pass']})
+          %W(#{redis['bin']} -h #{redis['host']} -p #{redis['port']} -n #{redis['database']} -a #{redis['pass']})
         else
-          %W(#{redis['bin']} -h #{redis['host']} -p #{redis['port']})
+          %W(#{redis['bin']} -h #{redis['host']} -p #{redis['port']} -n #{redis['database']})
         end
       end
     end

spec/gitlab_config_spec.rb

@@ -11,6 +11,7 @@ describe GitlabConfig do
     it { should have_key('bin') }
     it { should have_key('host') }
     it { should have_key('port') }
+    it { should have_key('database') }
     it { should have_key('namespace') }
   end