Class: Isono::Runner::Base

Inherits:
Object
  • Object
show all
Includes:
Logger
Defined in:
lib/isono/runner/base.rb

Direct Known Subclasses

CLI::Oneshot, RpcServer::Server

Instance Method Summary collapse

Methods included from Logger

included, initialize

Constructor Details

#initialize ⇒ Base

Returns a new instance of Base.



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# File 'lib/isono/runner/base.rb', line 48

def initialize()
  @options = {
    :amqp_server_uri => URI.parse('amqp://guest:guest@localhost/'),
    :log_file => nil,
    :pid_file => nil,
    :daemonize => false,
    :config_path => nil,
    :manifest_path => nil,
  }
end

Instance Method Details

#optparse(args) ⇒ Object 



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# File 'lib/isono/runner/base.rb', line 59

def optparse(args)
  optparse = OptionParser.new do |opts|
    opts.banner = "Usage: #{$0} [options]"
    
    opts.separator ""
    opts.separator "Options:"
    opts.on( "-i", "--id ID", "Manually specify the Agent ID" ) {|str| @options[:node_id] = str }
    opts.on( "-p", "--pid PIDFILE", "pid file path" ) {|str| @options[:pid_file] = str }
    opts.on( "--log LOGFILE", "log file path" ) {|str| @options[:log_file] = str }
    opts.on( "--config CONFFILE", "config file path" ) {|str| @options[:config_file] = str }
    opts.on( "-s", "--server AMQP_URI", "amqp broker server to connect" ) {|str|
      begin
        @options[:amqp_server_uri] = URI.parse(str)
      rescue URI::InvalidURIError => e
        abort "#{e}"
      end
    }
    opts.on("-b", "Run in background" ) { @options[:daemonize] = false }
  end

  optparse.parse!(args)
end

#run(manifest = nil, opts = {}, &blk) ⇒ Object 



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# File 'lib/isono/runner/base.rb', line 82

def run(manifest=nil, opts={}, &blk)
  @options = @options.merge(opts)
  optparse(ARGV.dup)
  
  if manifest.is_a?(String)
    # load manifest file
    manifest = Manifest.load_file(manifest)
  elsif manifest.nil? && @options[:manifest_path]
    manifest = Manifest.load_file(@options[:manifest_path])
  end

  if @options[:node_id]
    # force overwrite node_id if the command line arg was given.
    manifest.node_instance_id(@options[:node_id])
  elsif manifest.node_id.nil?
    # nobody specified the node_id then set the ID in the
    # default manner. 
    manifest.node_id(default_node_id)
  end

  @options[:log_file] ||= "/var/log/%s.log" % [manifest.node_name]
  @options[:pid_file] ||= "/var/run/%s.pid" % [manifest.node_name]

  if @options[:daemonize]
    if @options[:log_file]
      logio = File.open(@options[:log_file], "a")
    end
    Daemonize.daemonize(logio || STDOUT)
  end

  # EM's reactor is shutdown already when EXIT signal is
  # caught. so that set handler for TERM, INT
  %w(TERM INT).each { |i|
    Signal.trap(i) {
      if @node
        # force the block to push next loop.
        # EM.schedule gets the current thread stucked.
        EventMachine.next_tick {
          @node.close { EventMachine.stop }
          @node = nil
        }
      end
    }
  }
  Signal.trap(:EXIT) { remove_pidfile if @options[:daemonize] }

  EventMachine.epoll
  EventMachine.run {
    @node = run_main(manifest, &blk)
    raise "run_main() must return Isono::Node object: #{@node.class}" unless @node.is_a?(Isono::Node)
  }
end