Add --pidfile to start command for writing a PID file.

.gitignore

@@ -15,3 +15,4 @@ priv/*.so
 c/*.o
 build/*
 releases/dynomite-*
+*.pid

elibs/dynomite_app.erl

@@ -34,6 +34,12 @@
 %% @end
 %%--------------------------------------------------------------------
 start(_Type, []) ->
+  case application:get_env(pidfile) of
+      {ok, Location} ->
+          Pid = os:getpid(),
+          ok = file:write_file(Location, list_to_binary(Pid));
+      undefined -> ok
+  end,
   case application:get_env(config) of
     {ok, ConfigFile} ->
       case filelib:is_file(ConfigFile) of

rlibs/cli/start.rb

@@ -30,6 +30,10 @@
   opts.on('-d', "--detached", "run detached from the shell") do |detached|
     options[:detached] = '-detached'
   end
+
+  opts.on('-p', "--pidfile PIDFILE", "write pidfile to PIDFILE") do |pidfile|
+    options[:pidfile] = %Q(-dynomite pidfile "'#{pidfile}'")
+  end
 end.parse!
 
 cookie = Digest::MD5.hexdigest(options[:cluster] + "NomMxnLNUH8suehhFg2fkXQ4HVdL2ewXwM")
@@ -51,6 +55,7 @@
   -setcookie #{cookie} \
   #{options[:startup]} \
   #{options[:detached]} \
+  #{options[:pidfile]} \
   #{options[:profile]}"
 puts str
 exec str