Class: TokyoCacheCow::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/tokyo_cache_cow/runner.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/tokyo_cache_cow/runner.rb', line 9

def initialize(argv)
  @argv = argv
  # Default options values
  @options = {
    :chdir                 => Dir.pwd,
    :address               => '0.0.0.0',
    :port                  => Server::DefaultPort,
    :class                 => 'TokyoCacheCow::Cache::TokyoCabinetMemcache',
    :require               => [],
    :file                  => '/tmp/tcc-cache',
    :pid                   => '/tmp/tcc.pid',
    :special_delete_prefix => nil,
    :daemonize             => false,
    :marshalling           => true
  }
  
  parse!
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/tokyo_cache_cow/runner.rb', line 7

def options
  @options
end

Instance Method Details

#parse! ⇒ Object 



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# File 'lib/tokyo_cache_cow/runner.rb', line 76

def parse!
  parser.parse!(@argv)
end

#parser ⇒ Object 



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# File 'lib/tokyo_cache_cow/runner.rb', line 28

def parser
  OptionParser.new do |opts|
    opts.banner = "Usage: tokyo_cache_cow [options]"

    opts.separator ""
    opts.separator "Options:"

    opts.on("-p[OPTIONAL]", "--port", "Port (default: #{options[:port]})") do |v|
      options[:port] = v
    end

    opts.on("-a[OPTIONAL]", "--address", "Address (default: #{options[:address]})") do |v|
      options[:address] = v
    end

    opts.on("-c[OPTIONAL]", "--class", "Cache provider class (default: #{options[:class]})") do |v|
      options[:class] = v
    end

    opts.on("-r[OPTIONAL]", "--require", "require") do |v|
      options[:require] << v
    end

    opts.on("-f[OPTIONAL]", "--file", "File (default: #{options[:file]})") do |v|
      options[:file] = v
    end

    opts.on("-d[OPTIONAL]", "--daemonize", "Daemonize (default: #{options[:daemonize]})") do |v|
      options[:daemonize] = true
    end

    opts.on("-P[OPTIONAL]", "--pid", "Pid file (default: #{options[:pid]})") do |v|
      options[:pid] = v
    end

    opts.on("-m[OPTIONAL]", "--matcher", "Special flag for doing matched deletes and gets (not enabled by default)") do |v|
      options[:special_match_char] = v
    end

    opts.on("-M[=OPTIONAL]", "--marshalling", "Disable marshalling of values") do |v|
      options[:marshalling] = false
    end

    opts.on_tail("-h", "--help", "Show this help message.") { puts opts; exit }

  end
end

#start! ⇒ Object 



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# File 'lib/tokyo_cache_cow/runner.rb', line 80

def start!
  @options[:require].each {|r| require r}
  
  clazz = @options[:class].to_s.split('::').inject(Kernel) do |parent, mod|
    parent.const_get(mod)
  end
  
  address = @options[:address]
  port = @options[:port]
  special_match_char = @options[:special_match_char]
  puts "Starting the tokyo cache cow #{address} #{port}"
  pid = EM.fork_reactor do
    cache = clazz.new(:file => @options[:file])
    cache.marshalling_enabled = options[:marshalling]
    trap("INT") { EM.stop; puts "\nmoooooooo ya later"; exit(0)}
    EM.run do
      EM.start_server(address, port, TokyoCacheCow::Server) do |c|
        c.cache = cache
        c.special_match_char = special_match_char if special_match_char
      end
    end
  end
  
  if @options[:daemonize]
    File.open(options[:pid], 'w') {|f| f << pid}
    Process.detach(pid)
    Process.exit!(0)
  else
    trap("INT") { }
    Process.wait(pid)
  end
  
  pid
end