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Extracted the process scripts (inspector, reaper, spawner) into the plugin irs_process_scripts [DHH]
This commit is contained in:
David Heinemeier Hansson
parent
be140e8c6b
commit
3b3c0507e2
10 changed files with 5 additions and 510 deletions
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@ -1,5 +1,7 @@
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*2.3.0 [Edge]*
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* Extracted the process scripts (inspector, reaper, spawner) into the plugin irs_process_scripts [DHH]
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* Changed Rails.root to return a Pathname object (allows for Rails.root.join('app', 'controllers') => "#{RAILS_ROOT}/app/controllers") #1482 [Damian Janowski/?]
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* Added view path support for engines [DHH]
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@ -53,7 +53,6 @@ BASE_DIRS = %w(
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public
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script
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script/performance
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script/process
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test
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vendor
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vendor/plugins
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@ -71,7 +70,7 @@ LOG_FILES = %w( server.log development.log test.log production.log )
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HTML_FILES = %w( 422.html 404.html 500.html index.html robots.txt favicon.ico images/rails.png
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javascripts/prototype.js javascripts/application.js
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javascripts/effects.js javascripts/dragdrop.js javascripts/controls.js )
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BIN_FILES = %w( about console destroy generate performance/benchmarker performance/profiler process/reaper process/spawner process/inspector runner server plugin )
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BIN_FILES = %w( about console destroy generate performance/benchmarker performance/profiler runner server plugin )
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VENDOR_LIBS = %w( actionpack activerecord actionmailer activesupport activeresource railties )
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@ -174,9 +173,6 @@ task :copy_dispatches do
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copy_with_rewritten_ruby_path("dispatches/dispatch.fcgi", "#{PKG_DESTINATION}/public/dispatch.fcgi")
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chmod 0755, "#{PKG_DESTINATION}/public/dispatch.fcgi"
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# copy_with_rewritten_ruby_path("dispatches/gateway.cgi", "#{PKG_DESTINATION}/public/gateway.cgi")
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# chmod 0755, "#{PKG_DESTINATION}/public/gateway.cgi"
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end
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task :copy_html_files do
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@ -1,3 +0,0 @@
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#!/usr/bin/env ruby
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require File.dirname(__FILE__) + '/../../config/boot'
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require 'commands/process/inspector'
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@ -1,3 +0,0 @@
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#!/usr/bin/env ruby
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require File.dirname(__FILE__) + '/../../config/boot'
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require 'commands/process/reaper'
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@ -1,3 +0,0 @@
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#!/usr/bin/env ruby
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require File.dirname(__FILE__) + '/../../config/boot'
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require 'commands/process/spawner'
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@ -1,68 +0,0 @@
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require 'optparse'
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if RUBY_PLATFORM =~ /(:?mswin|mingw)/ then abort("Inspector is only for Unix") end
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OPTIONS = {
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:pid_path => File.expand_path(RAILS_ROOT + '/tmp/pids'),
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:pattern => "dispatch.*.pid",
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:ps => "ps -o pid,state,user,start,time,pcpu,vsz,majflt,command -p %s"
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}
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class Inspector
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def self.inspect(pid_path, pattern)
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new(pid_path, pattern).inspect
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end
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def initialize(pid_path, pattern)
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@pid_path, @pattern = pid_path, pattern
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end
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def inspect
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header = `#{OPTIONS[:ps] % 1}`.split("\n")[0] + "\n"
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lines = pids.collect { |pid| `#{OPTIONS[:ps] % pid}`.split("\n")[1] }
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puts(header + lines.join("\n"))
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end
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private
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def pids
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pid_files.collect do |pid_file|
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File.read(pid_file).to_i
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end
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end
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def pid_files
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Dir.glob(@pid_path + "/" + @pattern)
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end
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end
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ARGV.options do |opts|
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opts.banner = "Usage: inspector [options]"
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opts.separator ""
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opts.on <<-EOF
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Description:
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Displays system information about Rails dispatchers (or other processes that use pid files) through
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the ps command.
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Examples:
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inspector # default ps on all tmp/pids/dispatch.*.pid files
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inspector -s 'ps -o user,start,majflt,pcpu,vsz -p %s' # custom ps, %s is where the pid is interleaved
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EOF
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opts.on(" Options:")
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opts.on("-s", "--ps=command", "default: #{OPTIONS[:ps]}", String) { |v| OPTIONS[:ps] = v }
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opts.on("-p", "--pidpath=path", "default: #{OPTIONS[:pid_path]}", String) { |v| OPTIONS[:pid_path] = v }
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opts.on("-r", "--pattern=pattern", "default: #{OPTIONS[:pattern]}", String) { |v| OPTIONS[:pattern] = v }
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opts.separator ""
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opts.on("-h", "--help", "Show this help message.") { puts opts; exit }
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opts.parse!
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end
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Inspector.inspect(OPTIONS[:pid_path], OPTIONS[:pattern])
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@ -1,149 +0,0 @@
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require 'optparse'
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require 'net/http'
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require 'uri'
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if RUBY_PLATFORM =~ /(:?mswin|mingw)/ then abort("Reaper is only for Unix") end
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class Killer
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class << self
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# Searches for all processes matching the given keywords, and then invokes
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# a specific action on each of them. This is useful for (e.g.) reloading a
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# set of processes:
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#
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# Killer.process(:reload, "/tmp/pids", "dispatcher.*.pid")
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def process(action, pid_path, pattern, keyword)
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new(pid_path, pattern, keyword).process(action)
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end
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# Forces the (rails) application to reload by sending a +HUP+ signal to the
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# process.
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def reload(pid)
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`kill -s HUP #{pid}`
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end
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# Force the (rails) application to restart by sending a +USR2+ signal to the
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# process.
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def restart(pid)
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`kill -s USR2 #{pid}`
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end
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# Forces the (rails) application to gracefully terminate by sending a
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# +TERM+ signal to the process.
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def graceful(pid)
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`kill -s TERM #{pid}`
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end
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# Forces the (rails) application to terminate immediately by sending a -9
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# signal to the process.
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def kill(pid)
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`kill -9 #{pid}`
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end
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# Send a +USR1+ signal to the process.
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def usr1(pid)
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`kill -s USR1 #{pid}`
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end
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end
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def initialize(pid_path, pattern, keyword=nil)
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@pid_path, @pattern, @keyword = pid_path, pattern, keyword
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end
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def process(action)
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pids = find_processes
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if pids.empty?
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warn "Couldn't find any pid file in '#{@pid_path}' matching '#{@pattern}'"
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warn "(also looked for processes matching #{@keyword.inspect})" if @keyword
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else
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pids.each do |pid|
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puts "#{action.capitalize}ing #{pid}"
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self.class.send(action, pid)
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end
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delete_pid_files if terminating?(action)
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end
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end
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private
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def terminating?(action)
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[ "kill", "graceful" ].include?(action)
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end
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def find_processes
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files = pid_files
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if files.empty?
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find_processes_via_grep
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else
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files.collect { |pid_file| File.read(pid_file).to_i }
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end
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end
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def find_processes_via_grep
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lines = `ps axww -o 'pid command' | grep #{@keyword}`.split(/\n/).
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reject { |line| line =~ /inq|ps axww|grep|spawn-fcgi|spawner|reaper/ }
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lines.map { |line| line[/^\s*(\d+)/, 1].to_i }
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end
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def delete_pid_files
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pid_files.each { |pid_file| File.delete(pid_file) }
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end
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def pid_files
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Dir.glob(@pid_path + "/" + @pattern)
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end
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end
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OPTIONS = {
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:action => "restart",
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:pid_path => File.expand_path(RAILS_ROOT + '/tmp/pids'),
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:pattern => "dispatch.[0-9]*.pid",
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:dispatcher => File.expand_path("#{RAILS_ROOT}/public/dispatch.fcgi")
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}
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ARGV.options do |opts|
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opts.banner = "Usage: reaper [options]"
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opts.separator ""
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opts.on <<-EOF
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Description:
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The reaper is used to restart, reload, gracefully exit, and forcefully exit processes
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running a Rails Dispatcher (or any other process responding to the same signals). This
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is commonly done when a new version of the application is available, so the existing
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processes can be updated to use the latest code.
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It uses pid files to work on the processes and by default assume them to be located
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in RAILS_ROOT/tmp/pids.
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The reaper actions are:
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* restart : Restarts the application by reloading both application and framework code
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* reload : Only reloads the application, but not the framework (like the development environment)
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* graceful: Marks all of the processes for exit after the next request
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* kill : Forcefully exists all processes regardless of whether they're currently serving a request
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Restart is the most common and default action.
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Examples:
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reaper # restarts the default dispatchers
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reaper -a reload # reload the default dispatchers
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reaper -a kill -r *.pid # kill all processes that keep pids in tmp/pids
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EOF
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opts.on(" Options:")
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opts.on("-a", "--action=name", "reload|graceful|kill (default: #{OPTIONS[:action]})", String) { |v| OPTIONS[:action] = v }
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opts.on("-p", "--pidpath=path", "default: #{OPTIONS[:pid_path]}", String) { |v| OPTIONS[:pid_path] = v }
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opts.on("-r", "--pattern=pattern", "default: #{OPTIONS[:pattern]}", String) { |v| OPTIONS[:pattern] = v }
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opts.on("-d", "--dispatcher=path", "DEPRECATED. default: #{OPTIONS[:dispatcher]}", String) { |v| OPTIONS[:dispatcher] = v }
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opts.separator ""
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opts.on("-h", "--help", "Show this help message.") { puts opts; exit }
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opts.parse!
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end
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Killer.process(OPTIONS[:action], OPTIONS[:pid_path], OPTIONS[:pattern], OPTIONS[:dispatcher])
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@ -1,219 +0,0 @@
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require 'active_support'
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require 'optparse'
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require 'socket'
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require 'fileutils'
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def daemonize #:nodoc:
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exit if fork # Parent exits, child continues.
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Process.setsid # Become session leader.
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exit if fork # Zap session leader. See [1].
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Dir.chdir "/" # Release old working directory.
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File.umask 0000 # Ensure sensible umask. Adjust as needed.
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STDIN.reopen "/dev/null" # Free file descriptors and
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STDOUT.reopen "/dev/null", "a" # point them somewhere sensible.
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STDERR.reopen STDOUT # STDOUT/ERR should better go to a logfile.
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end
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class Spawner
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def self.record_pid(name = "#{OPTIONS[:process]}.spawner", id = Process.pid)
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FileUtils.mkdir_p(OPTIONS[:pids])
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File.open(File.expand_path(OPTIONS[:pids] + "/#{name}.pid"), "w+") { |f| f.write(id) }
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end
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def self.spawn_all
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OPTIONS[:instances].times do |i|
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port = OPTIONS[:port] + i
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print "Checking if something is already running on #{OPTIONS[:address]}:#{port}..."
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begin
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srv = TCPServer.new(OPTIONS[:address], port)
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srv.close
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srv = nil
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puts "NO"
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puts "Starting dispatcher on port: #{OPTIONS[:address]}:#{port}"
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FileUtils.mkdir_p(OPTIONS[:pids])
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spawn(port)
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rescue
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puts "YES"
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end
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end
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end
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end
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class FcgiSpawner < Spawner
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def self.spawn(port)
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cmd = "#{OPTIONS[:spawner]} -f #{OPTIONS[:dispatcher]} -p #{port} -P #{OPTIONS[:pids]}/#{OPTIONS[:process]}.#{port}.pid"
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cmd << " -a #{OPTIONS[:address]}" if can_bind_to_custom_address?
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system(cmd)
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end
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def self.can_bind_to_custom_address?
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@@can_bind_to_custom_address ||= /^\s-a\s/.match `#{OPTIONS[:spawner]} -h`
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end
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end
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class MongrelSpawner < Spawner
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def self.spawn(port)
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cmd =
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"mongrel_rails start -d " +
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"-a #{OPTIONS[:address]} " +
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"-p #{port} " +
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"-P #{OPTIONS[:pids]}/#{OPTIONS[:process]}.#{port}.pid " +
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"-e #{OPTIONS[:environment]} " +
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"-c #{OPTIONS[:rails_root]} " +
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"-l #{OPTIONS[:rails_root]}/log/mongrel.log"
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# Add prefix functionality to spawner's call to mongrel_rails
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# Digging through mongrel's project subversion server, the earliest
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# Tag that has prefix implemented in the bin/mongrel_rails file
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# is 0.3.15 which also happens to be the earliest tag listed.
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# References: http://mongrel.rubyforge.org/svn/tags
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if Mongrel::Const::MONGREL_VERSION.to_f >=0.3 && !OPTIONS[:prefix].nil?
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cmd = cmd + " --prefix #{OPTIONS[:prefix]}"
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end
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system(cmd)
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end
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def self.can_bind_to_custom_address?
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true
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end
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end
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begin
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require_library_or_gem 'fcgi'
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rescue Exception
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# FCGI not available
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end
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begin
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require_library_or_gem 'mongrel'
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rescue Exception
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# Mongrel not available
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end
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server = case ARGV.first
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when "fcgi", "mongrel"
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ARGV.shift
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else
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if defined?(Mongrel)
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"mongrel"
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elsif RUBY_PLATFORM !~ /(:?mswin|mingw)/ && !silence_stderr { `spawn-fcgi -version` }.blank? && defined?(FCGI)
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"fcgi"
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end
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end
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case server
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when "fcgi"
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puts "=> Starting FCGI dispatchers"
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spawner_class = FcgiSpawner
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when "mongrel"
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puts "=> Starting mongrel dispatchers"
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spawner_class = MongrelSpawner
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else
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puts "Neither FCGI (spawn-fcgi) nor Mongrel was installed and available!"
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exit(0)
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end
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OPTIONS = {
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:environment => "production",
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:spawner => '/usr/bin/env spawn-fcgi',
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:dispatcher => File.expand_path(RELATIVE_RAILS_ROOT + '/public/dispatch.fcgi'),
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:pids => File.expand_path(RELATIVE_RAILS_ROOT + "/tmp/pids"),
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:rails_root => File.expand_path(RELATIVE_RAILS_ROOT),
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:process => "dispatch",
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:port => 8000,
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:address => '0.0.0.0',
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:instances => 3,
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:repeat => nil,
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:prefix => nil
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}
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ARGV.options do |opts|
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opts.banner = "Usage: spawner [platform] [options]"
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opts.separator ""
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opts.on <<-EOF
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Description:
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The spawner is a wrapper for spawn-fcgi and mongrel that makes it
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easier to start multiple processes running the Rails dispatcher. The
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spawn-fcgi command is included with the lighttpd web server, but can
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be used with both Apache and lighttpd (and any other web server
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supporting externally managed FCGI processes). Mongrel automatically
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ships with with mongrel_rails for starting dispatchers.
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The first choice you need to make is whether to spawn the Rails
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dispatchers as FCGI or Mongrel. By default, this spawner will prefer
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Mongrel, so if that's installed, and no platform choice is made,
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Mongrel is used.
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Then decide a starting port (default is 8000) and the number of FCGI
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process instances you'd like to run. So if you pick 9100 and 3
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instances, you'll start processes on 9100, 9101, and 9102.
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By setting the repeat option, you get a protection loop, which will
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attempt to restart any FCGI processes that might have been exited or
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outright crashed.
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You can select bind address for started processes. By default these
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listen on every interface. For single machine installations you would
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probably want to use 127.0.0.1, hiding them form the outside world.
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Examples:
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spawner # starts instances on 8000, 8001, and 8002
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# using Mongrel if available.
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spawner fcgi # starts instances on 8000, 8001, and 8002
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# using FCGI.
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spawner mongrel -i 5 # starts instances on 8000, 8001, 8002,
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# 8003, and 8004 using Mongrel.
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spawner -p 9100 -i 10 # starts 10 instances counting from 9100 to
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# 9109 using Mongrel if available.
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spawner -p 9100 -r 5 # starts 3 instances counting from 9100 to
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# 9102 and attempts start them every 5
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# seconds.
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spawner -a 127.0.0.1 # starts 3 instances binding to localhost
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EOF
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opts.on(" Options:")
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opts.on("-p", "--port=number", Integer, "Starting port number (default: #{OPTIONS[:port]})") { |v| OPTIONS[:port] = v }
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if spawner_class.can_bind_to_custom_address?
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||||
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
|
||||
|
|
@ -1,57 +0,0 @@
|
|||
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
|
||||
|
|
@ -85,7 +85,6 @@ class AppGenerator < Rails::Generator::Base
|
|||
public/javascripts
|
||||
public/stylesheets
|
||||
script/performance
|
||||
script/process
|
||||
test/fixtures
|
||||
test/functional
|
||||
test/integration
|
||||
|
|
@ -139,8 +138,8 @@ class AppGenerator < Rails::Generator::Base
|
|||
|
||||
def create_script_files(m)
|
||||
%w(
|
||||
about console dbconsole destroy generate performance/benchmarker performance/profiler
|
||||
performance/request process/reaper process/spawner process/inspector runner server plugin
|
||||
about console dbconsole destroy generate runner server plugin
|
||||
performance/benchmarker performance/profiler performance/request
|
||||
).each do |file|
|
||||
m.file "bin/#{file}", "script/#{file}", {
|
||||
:chmod => 0755,
|
||||
|
|
|
|||
Loading…
Reference in a new issue