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author | Jeremy Kemper <jeremy@bitsweat.net> | 2008-12-03 10:32:30 -0600 |
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committer | Jeremy Kemper <jeremy@bitsweat.net> | 2008-12-03 10:32:30 -0600 |
commit | 99f2cb4918786382413bdd29b3cacfd5b9377677 (patch) | |
tree | 9279a5f1b63a03f51b1a04734a4c70bb6b6c3546 /railties/lib/commands/process/spawner.rb | |
parent | 0b4858cf38f522208381f9bfbbb5c066aceb30d2 (diff) | |
parent | 1e1056f6435254c81f02fd0fba53d9356050cb00 (diff) | |
download | rails-99f2cb4918786382413bdd29b3cacfd5b9377677.tar.gz rails-99f2cb4918786382413bdd29b3cacfd5b9377677.tar.bz2 rails-99f2cb4918786382413bdd29b3cacfd5b9377677.zip |
Merge branch 'master' of git@github.com:rails/rails
Diffstat (limited to 'railties/lib/commands/process/spawner.rb')
-rw-r--r-- | railties/lib/commands/process/spawner.rb | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/railties/lib/commands/process/spawner.rb b/railties/lib/commands/process/spawner.rb deleted file mode 100644 index 8bf47abb75..0000000000 --- a/railties/lib/commands/process/spawner.rb +++ /dev/null @@ -1,219 +0,0 @@ -require 'active_support' -require 'optparse' -require 'socket' -require 'fileutils' - -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 - -class Spawner - def self.record_pid(name = "#{OPTIONS[:process]}.spawner", id = Process.pid) - FileUtils.mkdir_p(OPTIONS[:pids]) - File.open(File.expand_path(OPTIONS[:pids] + "/#{name}.pid"), "w+") { |f| f.write(id) } - end - - def self.spawn_all - OPTIONS[:instances].times do |i| - port = OPTIONS[:port] + i - print "Checking if something is already running on #{OPTIONS[:address]}:#{port}..." - - begin - srv = TCPServer.new(OPTIONS[:address], port) - srv.close - srv = nil - - puts "NO" - puts "Starting dispatcher on port: #{OPTIONS[:address]}:#{port}" - - FileUtils.mkdir_p(OPTIONS[:pids]) - spawn(port) - rescue - puts "YES" - end - end - end -end - -class FcgiSpawner < Spawner - def self.spawn(port) - cmd = "#{OPTIONS[:spawner]} -f #{OPTIONS[:dispatcher]} -p #{port} -P #{OPTIONS[:pids]}/#{OPTIONS[:process]}.#{port}.pid" - cmd << " -a #{OPTIONS[:address]}" if can_bind_to_custom_address? - system(cmd) - end - - def self.can_bind_to_custom_address? - @@can_bind_to_custom_address ||= /^\s-a\s/.match `#{OPTIONS[:spawner]} -h` - end -end - -class MongrelSpawner < Spawner - def self.spawn(port) - cmd = - "mongrel_rails start -d " + - "-a #{OPTIONS[:address]} " + - "-p #{port} " + - "-P #{OPTIONS[:pids]}/#{OPTIONS[:process]}.#{port}.pid " + - "-e #{OPTIONS[:environment]} " + - "-c #{OPTIONS[:rails_root]} " + - "-l #{OPTIONS[:rails_root]}/log/mongrel.log" - - # Add prefix functionality to spawner's call to mongrel_rails - # Digging through mongrel's project subversion server, the earliest - # Tag that has prefix implemented in the bin/mongrel_rails file - # is 0.3.15 which also happens to be the earliest tag listed. - # References: http://mongrel.rubyforge.org/svn/tags - if Mongrel::Const::MONGREL_VERSION.to_f >=0.3 && !OPTIONS[:prefix].nil? - cmd = cmd + " --prefix #{OPTIONS[:prefix]}" - end - system(cmd) - end - - def self.can_bind_to_custom_address? - true - end -end - - -begin - require_library_or_gem 'fcgi' -rescue Exception - # FCGI not available -end - -begin - require_library_or_gem 'mongrel' -rescue Exception - # Mongrel not available -end - -server = case ARGV.first - when "fcgi", "mongrel" - ARGV.shift - else - if defined?(Mongrel) - "mongrel" - elsif RUBY_PLATFORM !~ /(:?mswin|mingw)/ && !silence_stderr { `spawn-fcgi -version` }.blank? && defined?(FCGI) - "fcgi" - end -end - -case server - when "fcgi" - puts "=> Starting FCGI dispatchers" - spawner_class = FcgiSpawner - when "mongrel" - puts "=> Starting mongrel dispatchers" - spawner_class = MongrelSpawner - else - puts "Neither FCGI (spawn-fcgi) nor Mongrel was installed and available!" - exit(0) -end - - - -OPTIONS = { - :environment => "production", - :spawner => '/usr/bin/env spawn-fcgi', - :dispatcher => File.expand_path(RELATIVE_RAILS_ROOT + '/public/dispatch.fcgi'), - :pids => File.expand_path(RELATIVE_RAILS_ROOT + "/tmp/pids"), - :rails_root => File.expand_path(RELATIVE_RAILS_ROOT), - :process => "dispatch", - :port => 8000, - :address => '0.0.0.0', - :instances => 3, - :repeat => nil, - :prefix => nil -} - -ARGV.options do |opts| - opts.banner = "Usage: spawner [platform] [options]" - - opts.separator "" - - opts.on <<-EOF - Description: - The spawner is a wrapper for spawn-fcgi and mongrel that makes it - easier to start multiple processes running the Rails dispatcher. The - spawn-fcgi command is included with the lighttpd web server, but can - be used with both Apache and lighttpd (and any other web server - supporting externally managed FCGI processes). Mongrel automatically - ships with with mongrel_rails for starting dispatchers. - - The first choice you need to make is whether to spawn the Rails - dispatchers as FCGI or Mongrel. By default, this spawner will prefer - Mongrel, so if that's installed, and no platform choice is made, - Mongrel is used. - - Then decide a starting port (default is 8000) and the number of FCGI - process instances you'd like to run. So if you pick 9100 and 3 - instances, you'll start processes on 9100, 9101, and 9102. - - By setting the repeat option, you get a protection loop, which will - attempt to restart any FCGI processes that might have been exited or - outright crashed. - - You can select bind address for started processes. By default these - listen on every interface. For single machine installations you would - probably want to use 127.0.0.1, hiding them form the outside world. - - Examples: - spawner # starts instances on 8000, 8001, and 8002 - # using Mongrel if available. - spawner fcgi # starts instances on 8000, 8001, and 8002 - # using FCGI. - spawner mongrel -i 5 # starts instances on 8000, 8001, 8002, - # 8003, and 8004 using Mongrel. - spawner -p 9100 -i 10 # starts 10 instances counting from 9100 to - # 9109 using Mongrel if available. - spawner -p 9100 -r 5 # starts 3 instances counting from 9100 to - # 9102 and attempts start them every 5 - # seconds. - spawner -a 127.0.0.1 # starts 3 instances binding to localhost - EOF - - opts.on(" Options:") - - opts.on("-p", "--port=number", Integer, "Starting port number (default: #{OPTIONS[:port]})") { |v| OPTIONS[:port] = v } - - if spawner_class.can_bind_to_custom_address? - opts.on("-a", "--address=ip", String, "Bind to IP address (default: #{OPTIONS[:address]})") { |v| OPTIONS[:address] = v } - end - - opts.on("-p", "--port=number", Integer, "Starting port number (default: #{OPTIONS[:port]})") { |v| OPTIONS[:port] = v } - opts.on("-i", "--instances=number", Integer, "Number of instances (default: #{OPTIONS[:instances]})") { |v| OPTIONS[:instances] = v } - opts.on("-r", "--repeat=seconds", Integer, "Repeat spawn attempts every n seconds (default: off)") { |v| OPTIONS[:repeat] = v } - opts.on("-e", "--environment=name", String, "test|development|production (default: #{OPTIONS[:environment]})") { |v| OPTIONS[:environment] = v } - opts.on("-P", "--prefix=path", String, "URL prefix for Rails app. [Used only with Mongrel > v0.3.15]: (default: #{OPTIONS[:prefix]})") { |v| OPTIONS[:prefix] = v } - opts.on("-n", "--process=name", String, "default: #{OPTIONS[:process]}") { |v| OPTIONS[:process] = v } - opts.on("-s", "--spawner=path", String, "default: #{OPTIONS[:spawner]}") { |v| OPTIONS[:spawner] = v } - opts.on("-d", "--dispatcher=path", String, "default: #{OPTIONS[:dispatcher]}") { |dispatcher| OPTIONS[:dispatcher] = File.expand_path(dispatcher) } - - opts.separator "" - - opts.on("-h", "--help", "Show this help message.") { puts opts; exit } - - opts.parse! -end - -ENV["RAILS_ENV"] = OPTIONS[:environment] - -if OPTIONS[:repeat] - daemonize - trap("TERM") { exit } - spawner_class.record_pid - - loop do - spawner_class.spawn_all - sleep(OPTIONS[:repeat]) - end -else - spawner_class.spawn_all -end |