Class: ExperellaProxy::Proxy

Inherits:
Object
  • Object
show all
Extended by:
Globals
Defined in:
lib/experella-proxy/proxy.rb

Overview

The proxy

Controls the EventMachine, initializes backends from config and starts proxy servers

Class Method Summary collapse

Methods included from Globals

config, connection_manager, event, logger

Class Method Details

.start(options, &blk) ⇒ Object

Starts the Eventmachine, initializes backends in ConnectionManager and starts the servers defined in config the proxy should listen on

Parameters:

  • options (Hash) —

    option Hash passed to the Connection

  • blk (Block) —

    Block evaluated in each new Connection



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# File 'lib/experella-proxy/proxy.rb', line 13

def self.start(options, &blk)
  # initalize backend servers from config
  config.backends.each do |backend|
    connection_manager.add_backend(BackendServer.new(backend[:host], backend[:port], backend))
    logger.info "Initializing backend #{backend[:name]} at #{backend[:host]}:#{backend[:port]} with concurrency\
             #{backend[:concurrency]}"
    logger.info "Backend accepts: #{backend[:accepts].inspect}"
    logger.info "Backend mangles: #{backend[:mangle].inspect}"
  end

  # start eventmachine
  EM.epoll
  EM.run do
    trap("TERM"){ stop }
    trap("INT"){ stop }

    if config.proxy.empty?
      logger.fatal "No proxy host:port address configured. Stopping experella-proxy."
      return stop
    else
      config.proxy.each do |proxy|
        opts = options
        # pass proxy specific options
        unless proxy[:options].nil?
          opts = options.merge(proxy[:options])
        end
        logger.info "Launching experella-proxy (#{ExperellaProxy::VERSION}) at #{proxy[:host]}:#{proxy[:port]} with #{config.timeout}s timeout..."
        logger.info "with options: #{opts.inspect}"
        EventMachine.start_server(proxy[:host], proxy[:port],
                                  Connection, opts) do |conn|
          conn.instance_eval(&blk)
        end
      end
    end
  end
end

.stop ⇒ Object

Stops the Eventmachine and terminates all connections



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# File 'lib/experella-proxy/proxy.rb', line 53

def self.stop
  if EM.reactor_running?
    EventMachine.stop_event_loop
  end
end