thin_cluster_ctl

#!/usr/bin/env ruby
# Copyright (c) 2006 Bradley Taylor, bradley@fluxura.com
# Modified by Richard Heycock to support thin. rgh@roughage.com.au

require 'optparse'

def run(command, verbose, clean=false)
  bin = 'thin'
  opts = "--all #{@options[:conf_path]}"
  opts += " --clean" if clean
  opts += " --onebyone" if command == 'restart'
  cmd = "#{bin} #{opts} #{command}"
  puts cmd if verbose
  output = `#{cmd}`
  puts output if verbose
  puts "#{cmd} returned an error." unless $?.success?
end

@options = {}
@options[:conf_path] = "/etc/thin_cluster"
@options[:verbose] = false
@options[:clean] = false

commands = 'start|stop|restart'
OptionParser.new do |opts|
  opts.banner = "Usage: #{$0} [options] (#{commands})"
 
  opts.on("-c", "--conf_path PATH", "Path to thin configuration files (default: #{@options[:conf_path]})") { |value| @options[:conf_path] = value }
  opts.on('-v', '--verbose', "Print all called commands and output.") { |value| @options[:verbose] = value }
  opts.on('--clean', "Remove pid files if needed beforehand.") { |value| @options[:clean] = value }

  if ARGV.empty?
    puts opts
    exit
  else
    @cmd = opts.parse!(ARGV)
    if @cmd.nil?
      puts opts
      exit
    end
  end
end

if @options[:conf_path] == nil && !File.directory?(@options[:conf_path])
  puts "Invalid path to thin configuration files: #{@options[:conf_path]}"
  exit
end

unless Regexp.new(commands).match(@cmd[0])
  puts "Unknown command. Valid commands: #{commands}"
  exit
end

puts "#{@cmd[0].capitalize}ing all thin clusters ..."
run @cmd[0], @options[:verbose], @options[:clean]

exit