--- /dev/null
+require 'optparse'
+
+def daemonize #:nodoc:
+ exit if fork # Parent exits, child continues.
+ Process.setsid # Become session leader.
+ exit if fork # Zap session leader. See [1].
+ Dir.chdir "/" # Release old working directory.
+ File.umask 0000 # Ensure sensible umask. Adjust as needed.
+ STDIN.reopen "/dev/null" # Free file descriptors and
+ STDOUT.reopen "/dev/null", "a" # point them somewhere sensible.
+ STDERR.reopen STDOUT # STDOUT/ERR should better go to a logfile.
+end
+
+OPTIONS = {
+ :interval => 5.0,
+ :command => File.expand_path(RAILS_ROOT + '/script/process/spawner'),
+ :daemon => false
+}
+
+ARGV.options do |opts|
+ opts.banner = "Usage: spinner [options]"
+
+ opts.separator ""
+
+ opts.on <<-EOF
+ Description:
+ The spinner is a protection loop for the spawner, which will attempt to restart any FCGI processes
+ that might have been exited or outright crashed. It's a brute-force attempt that'll just try
+ to run the spawner every X number of seconds, so it does pose a light load on the server.
+
+ Examples:
+ spinner # attempts to run the spawner with default settings every second with output on the terminal
+ spinner -i 3 -d # only run the spawner every 3 seconds and detach from the terminal to become a daemon
+ spinner -c '/path/to/app/script/process/spawner -p 9000 -i 10' -d # using custom spawner
+ EOF
+
+ opts.on(" Options:")
+
+ opts.on("-c", "--command=path", String) { |v| OPTIONS[:command] = v }
+ opts.on("-i", "--interval=seconds", Float) { |v| OPTIONS[:interval] = v }
+ opts.on("-d", "--daemon") { |v| OPTIONS[:daemon] = v }
+
+ opts.separator ""
+
+ opts.on("-h", "--help", "Show this help message.") { puts opts; exit }
+
+ opts.parse!
+end
+
+daemonize if OPTIONS[:daemon]
+
+trap(OPTIONS[:daemon] ? "TERM" : "INT") { exit }
+
+loop do
+ system(OPTIONS[:command])
+ sleep(OPTIONS[:interval])
+end
\ No newline at end of file