Class: HttpReactor::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/http_reactor/client.rb

Overview

An HTTP client that uses the Reactor pattern.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(requests = [], handler_proc = nil, options = {}, &block) ⇒ Client

Create a new HttpReactor client that will request the given URIs.

Parameters:

  • uris: An array of URI objects.

  • handler_proc: A Proc that will be called with the response and context

  • session_request_callback: A class that implements the session request callback interface found in the HttpCore library.

  • <tt>options: A hash of configuration options. See below.

The options hash may include the following options

  • :so_timeout: (default = 5 seconds)

  • :connection_timeout: The HTTP connection timeout (default = 10 seconds)

  • :socket_buffer_size: The buffer size (defaults to 8Kb)

  • :stale_connection_check: (defaults to false)

  • :tcp_nodelay: (defaults to true)

  • :user_agent: The user agent string to send (defaults to “JRubyHttpReactor”)

  • :event_listener: A class that implements the org.apache.http.nio.protocol interface



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# File 'lib/http_reactor/client.rb', line 167

def initialize(requests=[], handler_proc=nil, options={}, &block)
  handler_proc = block if block_given?
  handler_proc ||= default_handler_proc
  
  initialize_options(options)
  
  params = build_params(options)
  
  io_reactor = DefaultConnectingIOReactor.new(2, params);
  
  httpproc = BasicHttpProcessor.new;
  httpproc.add_interceptor(RequestContent.new);
  httpproc.add_interceptor(RequestTargetHost.new);
  httpproc.add_interceptor(RequestConnControl.new);
  httpproc.add_interceptor(RequestUserAgent.new);
  httpproc.add_interceptor(RequestExpectContinue.new);
  
  # We are going to use this object to synchronize between the 
  # I/O event and main threads
  request_counter = java.util.concurrent.CountDownLatch.new(requests.length);

  handler = BufferingHttpClientHandler.new(
    httpproc,
    RequestExecutionHandler.new(request_counter, handler_proc),
    org.apache.http.impl.DefaultConnectionReuseStrategy.new,
    params
  )
  
  handler.event_listener = options[:event_listener].new if options[:event_listener]
  
  io_event_dispatch = DefaultClientIOEventDispatch.new(handler, params)

  Thread.abort_on_exception = true
  t = Thread.new do
    begin
      #puts "Executing IO reactor"
      io_reactor.execute(io_event_dispatch)
    rescue java.io.InterruptedIOException => e
      puts "Interrupted"
    rescue java.io.IOException => e
      puts "I/O error in reactor execution thread: #{e.message}"
    end
    #puts "Shutdown"
  end
  
  process_requests(requests, io_reactor, request_counter)
  
  # Block until all connections signal
  # completion of the request execution
  request_counter.await()

  #puts "Shutting down I/O reactor"

  io_reactor.shutdown()

  #puts "Done"
end

Class Method Details

.process_requests(requests, io_reactor, request_counter) ⇒ Object 



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# File 'lib/http_reactor/client.rb', line 229

def self.process_requests(requests, io_reactor, request_counter)
  requests.each do |request|
    uri = request.uri
    attachment = {
      :host => HttpHost.new(uri.host), 
      :path => uri.request_uri,
      :request => request,
      :io_reactor => io_reactor
    }
    io_reactor.connect(
      java.net.InetSocketAddress.new(uri.host, uri.port), 
      nil, 
      attachment,
      SessionRequestCallback.new(request_counter)
    )
  end
end

Instance Method Details

#process_requests(requests, io_reactor, request_counter) ⇒ Object 



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# File 'lib/http_reactor/client.rb', line 225

def process_requests(requests, io_reactor, request_counter)
  HttpReactor::Client.process_requests(requests, io_reactor, request_counter)
end