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Finished renaming; added tests.

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1 parent 4dd287d commit b8c2117693fb9d6c901537046ea74c2c2f54f707 Don Werve committed
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  1. +202 −0 LICENSE
  2. +41 −0 README
  3. +12 −0 bin/mizuno
  4. +1 −0 lib/rack/handler/mizuno.rb
  5. +66 −0 lib/rack/handler/mizuno/http_server.rb
  6. +219 −0 lib/rack/handler/mizuno/rack_servlet.rb
  7. +73 −0 lib/testrequest.rb
  8. +86 −0 test/rack.rb
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202 LICENSE
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+
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41 README
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+ is a high-performance Rack adapter for JRuby apps,
+based on the latest version of the Jetty webserver
+(http://jetty.codehaus.org/jetty/)
+
+To use rack-handler-jetty with your Rack app:
+
+ gem install rack-handler-jetty
+ cd /path/to/my/app
+ jetty
+
+We get our performance by implementing a direct servlet-to-rack bridge
+via JRuby's Java integration layer.
+
+The numbers speak for themselves:
+
+ ruby 1.9.1p243
+
+ Mongrel
+ Webrick
+ Thin
+
+ JRuby 1.5.0RC1 on Java SE Server VM 1.6.0_17-b04
+
+ Mongrel
+ Webrick
+ rack-handler-jetty
+ Jetty+Warbler
+ Tomcat+Warbler
+
+rack-handler-jetty also provides access to the underlaying servlet
+context, allowing for runtime additions of additional servlets and
+filters. We plan on using this to tie in the cometd servlet
+as a piece of Rack middleware, which will provide a simple way to
+add Comet funtionality, via the Bayeux protocol, to any Rack
+application.
+
+Note that rack-handler-jetty is NOT a direct replacement for jruby-rack
+or Warbler, as we don't produce WAR files or make any attempt to package
+a Rack application for installation in a Java web container. Rather, we
+just make it really easy to use Jetty as a webserver for your Rack
+applications.
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12 bin/mizuno
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+#!/usr/bin/env ruby
+
+# Make sure we're on JRuby.
+raise("Rack::Handler::Mizuno only runs on JRuby.") \
+ unless (RUBY_PLATFORM =~ /java/)
+
+require 'rack'
+require 'rack/handler/mizuno'
+
+server = Rack::Server.new
+server.options[:server] = 'mizuno'
+server.start
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1 lib/rack/handler/mizuno.rb
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+require 'rack/handler/mizuno/http_server'
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66 lib/rack/handler/mizuno/http_server.rb
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+#
+# A Rack handler for Jetty 7.
+#
+# Written by Don Werve <don.werve@gmail.com>
+#
+
+require 'java'
+require 'rack'
+
+# Load Jetty JARs.
+jars = File.join(File.dirname(__FILE__), '..', '..', '..', 'java', '*.jar')
+Dir[jars].each { |j| require j }
+
+# Load the Rack/Servlet bridge.
+require 'rack/handler/mizuno/rack_servlet'
+
+# We don't want to mix our logs in with Solr.
+# FIXME: Implement a custom logger.
+java.lang.System.setProperty("org.eclipse.jetty.util.log.class",
+ "org.eclipse.jetty.util.log.StdErrLog")
+
+module Rack::Handler::Mizuno
+ class HttpServer
+ # Include various Jetty classes so we can use the short names.
+ include_class 'org.eclipse.jetty.server.Server'
+ include_class 'org.eclipse.jetty.servlet.ServletContextHandler'
+ include_class 'org.eclipse.jetty.servlet.ServletHolder'
+ include_class 'org.eclipse.jetty.server.nio.SelectChannelConnector'
+ include_class 'org.eclipse.jetty.util.thread.QueuedThreadPool'
+
+ def self.run(app, options = {})
+ # The Jetty server
+ server = Server.new
+
+ # Thread pool
+ thread_pool = QueuedThreadPool.new
+ thread_pool.min_threads = 5
+ thread_pool.max_threads = 50
+ server.set_thread_pool(thread_pool)
+
+ # Connector
+ connector = SelectChannelConnector.new
+ connector.setPort(options[:Port].to_i)
+ connector.setHost(options[:Host])
+ server.addConnector(connector)
+
+ # Servlet context.
+ context = ServletContextHandler.new(nil, "/",
+ ServletContextHandler::NO_SESSIONS)
+
+ # The servlet itself.
+ servlet = RackServlet.new
+ servlet.rackup(app)
+ holder = ServletHolder.new(servlet)
+ context.addServlet(holder, "/")
+
+ # Add the context to the server and start.
+ server.set_handler(context)
+ puts "Started Jetty on #{connector.getHost}:#{connector.getPort}"
+ server.start
+ end
+ end
+end
+
+# Register ourselves with Rack when this file gets loaded.
+Rack::Handler.register 'mizuno', 'Rack::Handler::Mizuno::Server'
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219 lib/rack/handler/mizuno/rack_servlet.rb
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+#
+# Wraps a Rack application in a Java servlet.
+#
+# http://rack.rubyforge.org/doc/SPEC.html
+# http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/http/HttpServlet.html
+#
+module Rack::Handler::Mizuno
+ include_class javax.servlet.http.HttpServlet
+
+ class RackServlet < HttpServlet
+ include_class java.io.FileInputStream
+ include_class org.eclipse.jetty.continuation.ContinuationSupport
+
+ #
+ # Sets the Rack application that handles requests sent to this
+ # servlet container.
+ #
+ def rackup(app)
+ @app = app
+ end
+
+ #
+ # Takes an incoming request (as a Java Servlet) and dispatches it to
+ # the rack application setup via [rackup]. All this really involves
+ # is translating the various bits of the Servlet API into the Rack
+ # API on the way in, and translating the response back on the way
+ # out.
+ #
+ # Also, we implement a common extension to the Rack api for
+ # asynchronous request processing. We supply an 'async.callback'
+ # parameter in env to the Rack application. If we catch an
+ # :async symbol thrown by the app, we initiate a Jetty continuation.
+ #
+ # When 'async.callback' gets a response with empty headers and an
+ # empty body, we declare the async response finished.
+ #
+ def service(request, response)
+ # Turn the ServletRequest into a Rack env hash
+ env = servlet_to_rack(request)
+
+ # Handle asynchronous responses via Servlet continuations.
+ continuation = ContinuationSupport.getContinuation(request)
+
+ # If this is an expired connection, do nothing.
+ # FIXME: Is this the best way to handle things?
+ return if continuation.isExpired
+
+ # We should never be re-dispatched.
+ raise("Request re-dispatched.") unless continuation.isInitial
+
+ # Add our own special bits to the rack environment so that
+ # Rack middleware can have access to the Java internals.
+ env['rack.java.servlet'] = true
+ env['rack.java.servlet.request'] = request
+ env['rack.java.servlet.response'] = response
+ env['rack.java.servlet.continuation'] = continuation
+
+ # Add an callback that can be used to add results to the
+ # response asynchronously.
+ env['async.callback'] = lambda do |rack_response|
+ servlet_response = continuation.getServletResponse
+ rack_to_servlet(rack_response, servlet_response) \
+ and continuation.complete
+ end
+
+ # Execute the Rack request.
+ catch(:async) do
+ rack_response = @app.call(env)
+
+ # For apps that don't throw :async.
+ unless(rack_response[0] == -1)
+ # Nope, nothing asynchronous here.
+ rack_to_servlet(rack_response, response)
+ return
+ end
+ end
+
+ # If we got here, this is a continuation.
+ continuation.suspend(response)
+ end
+
+ private
+
+ #
+ # Turns a Servlet request into a Rack request hash.
+ #
+ def servlet_to_rack(request)
+ # The Rack request that we will pass on.
+ env = Hash.new
+
+ # Map Servlet bits to Rack bits.
+ env['REQUEST_METHOD'] = request.getMethod
+ env['QUERY_STRING'] = request.getQueryString.to_s
+ env['SERVER_NAME'] = request.getServerName
+ env['SERVER_PORT'] = request.getServerPort.to_s
+ env['rack.version'] = Rack::VERSION
+ env['rack.url_scheme'] = request.getScheme
+ env['HTTP_VERSION'] = request.getProtocol
+ env["SERVER_PROTOCOL"] = request.getProtocol
+ env['REMOTE_ADDR'] = request.getRemoteAddr
+ env['REMOTE_HOST'] = request.getRemoteHost
+
+ # request.getPathInfo seems to be blank, so we're using the URI.
+ env['REQUEST_PATH'] = request.getRequestURI
+ env['PATH_INFO'] = request.getRequestURI
+ env['SCRIPT_NAME'] = ""
+
+ # Rack says URI, but it hands off a URL.
+ env['REQUEST_URI'] = request.getRequestURL.toString
+
+ # Java chops off the query string, but a Rack application will
+ # expect it, so we'll add it back if present
+ env['REQUEST_URI'] << "?#{env['QUERY_STRING']}" \
+ if env['QUERY_STRING']
+
+ # FIXME
+ # It's a given that we're single-process on JRuby, because we
+ # can't fork, but this should probably be user-settable.
+ env['rack.multiprocess'] = false
+ env['rack.multithread'] = true
+ env['rack.run_once'] = false
+
+ # Populate the HTTP headers.
+ request.getHeaderNames.each do |header_name|
+ header = header_name.upcase.tr('-', '_')
+ env["HTTP_#{header}"] = request.getHeader(header_name)
+ end
+
+ # Rack Weirdness: HTTP_CONTENT_TYPE and HTTP_CONTENT_LENGTH
+ # both need to have the HTTP_ part dropped.
+ env["CONTENT_TYPE"] = env.delete("HTTP_CONTENT_TYPE") \
+ if env["HTTP_CONTENT_TYPE"]
+ env["CONTENT_LENGTH"] = env.delete("HTTP_CONTENT_LENGTH") \
+ if env["HTTP_CONTENT_LENGTH"]
+
+ # The input stream is a wrapper around the Java InputStream.
+ env['rack.input'] = request.getInputStream.to_io
+
+ # The output stream defaults to stderr.
+ env['rack.errors'] ||= $stderr
+
+ # All done, hand back the Rack request.
+ return(env)
+ end
+
+ #
+ # Turns a Rack response into a Servlet response; can be called
+ # multiple times. Returns true if this is the full request (either
+ # a synchronous request or the last part of an async request),
+ # false otherwise.
+ #
+ # Note that keep-alive *only* happens if we get either a pathname
+ # (because we can find the length ourselves), or if we get a
+ # Content-Length header as part of the response. While we can
+ # readily buffer the response object to figure out how long it is,
+ # we have no guarantee that we aren't going to be buffering
+ # something *huge*.
+ #
+ # http://docstore.mik.ua/orelly/java-ent/servlet/ch05_03.htm
+ #
+ def rack_to_servlet(rack_response, response)
+ # Split apart the Rack response.
+ status, headers, body = rack_response
+
+ # We assume the request is finished if we got empty headers,
+ # an empty body, and we have a committed response.
+ finished = (headers.empty? and \
+ body.respond_to?(:empty?) and body.empty?)
+ return(true) if (finished and response.isCommitted)
+
+ # No need to send headers again if we've already shipped
+ # data out on an async request.
+ unless(response.isCommitted)
+ # Set the HTTP status code.
+ response.setStatus(status)
+
+ # Did we get a Content-Length header?
+ content_length = headers.delete('Content-Length')
+ response.setContentLength(content_length.to_i) \
+ if content_length
+
+ # Add all the result headers.
+ headers.each { |h, v| response.addHeader(h, v) }
+ end
+
+ # How else would we write output?
+ output = response.getOutputStream
+
+ # Turn the body into something nice and Java-y.
+ if(body.respond_to?(:to_path))
+ # We've been told to serve a file; use FileInputStream to
+ # stream the file directly to the servlet, because this
+ # is a lot faster than doing it with Ruby.
+ file = java.io.File.new(body.to_path)
+
+ # We set the content-length so we can use Keep-Alive,
+ # unless this is an async request.
+ response.setContentLength(file.length) \
+ unless content_length
+
+ # Stream the file directly.
+ buffer = Java::byte[4096].new
+ input_stream = FileInputStream.new(file)
+ while((count = input_stream.read(buffer)) != -1)
+ output.write(buffer, 0, count)
+ end
+ input_stream.close
+ else
+ body.each { |l| output.write(l.to_java_bytes) }
+ end
+
+ # Close the body if we're supposed to.
+ body.close if body.respond_to?(:close)
+
+ # All done.
+ output.flush
+ end
+ end
+end
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73 lib/testrequest.rb
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+require 'yaml'
+require 'net/http'
+
+class TestApp
+ def call(env)
+ status = env["QUERY_STRING"] =~ /secret/ ? 403 : 200
+ env["test.postdata"] = env["rack.input"].read
+ body = env.to_yaml
+ size = body.respond_to?(:bytesize) ? body.bytesize : body.size
+ [status, {"Content-Type" => "text/yaml",
+ "Content-Length" => size.to_s}, [body]]
+ end
+
+ module Helpers
+ attr_reader :status, :response
+
+ ROOT = File.expand_path(File.dirname(__FILE__) + "/..")
+ ENV["RUBYOPT"] = "-I#{ROOT}/lib -rubygems"
+
+ def root
+ ROOT
+ end
+
+ def rackup
+ "#{ROOT}/bin/rackup"
+ end
+
+ def GET(path, header={})
+ Net::HTTP.start(@options[:Host], @options[:Port]) { |http|
+ user = header.delete(:user)
+ passwd = header.delete(:passwd)
+
+ get = Net::HTTP::Get.new(path, header)
+ get.basic_auth user, passwd if user && passwd
+ http.request(get) { |response|
+ @status = response.code.to_i
+ begin
+ @response = YAML.load(response.body)
+ rescue ArgumentError
+ @response = nil
+ end
+ }
+ }
+ end
+
+ def POST(path, formdata={}, header={})
+ Net::HTTP.start(@options[:Host], @options[:Port]) { |http|
+ user = header.delete(:user)
+ passwd = header.delete(:passwd)
+
+ post = Net::HTTP::Post.new(path, header)
+ post.form_data = formdata
+ post.basic_auth user, passwd if user && passwd
+ http.request(post) { |response|
+ @status = response.code.to_i
+ @response = YAML.load(response.body)
+ }
+ }
+ end
+ end
+end
+
+class StreamingRequest
+ def self.call(env)
+ [200, {"Content-Type" => "text/plain"}, new]
+ end
+
+ def each
+ yield "hello there!\n"
+ sleep 5
+ yield "that is all.\n"
+ end
+end
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86 test/rack.rb
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+#require 'test/spec'
+
+begin
+require 'rack/handler/mizuno'
+require 'rack/urlmap'
+require 'rack/lint'
+require 'testrequest'
+
+Thread.abort_on_exception = true
+
+context "Rack::Handler::Mizuno" do
+ include TestApp::Helpers
+
+ before(:all) do
+ @app = Rack::Lint.new(TestApp.new)
+ @options = { :Host => '0.0.0.0', :Port => 9201 }
+ @server = Rack::Handler::Mizuno::HttpServer.run(@app, @options)
+ end
+
+ specify "should respond" do
+ lambda { GET("/test") }.should_not raise_error
+ end
+
+ specify "should be using Jetty" do
+ GET("/test")
+ status.should == 200
+ response['rack.java.servlet'].should_not be_nil
+ response["HTTP_VERSION"].should == "HTTP/1.1"
+ response["SERVER_PROTOCOL"].should == "HTTP/1.1"
+ response["SERVER_PORT"].should == "9201"
+ response["SERVER_NAME"].should == "0.0.0.0"
+ end
+
+ specify "should have rack headers" do
+ GET("/test")
+ response["rack.version"].should == [1,1]
+ response["rack.multithread"].should be_true
+ response["rack.multiprocess"].should be_false
+ response["rack.run_once"].should be_false
+ end
+
+ specify "should have CGI headers on GET" do
+ GET("/test")
+ response["REQUEST_METHOD"].should == "GET"
+ response["REQUEST_PATH"].should == "/test"
+ response["PATH_INFO"].should == "/test"
+ response["QUERY_STRING"].should == ""
+ response["test.postdata"].should == ""
+
+ GET("/test/foo?quux=1")
+ response["REQUEST_METHOD"].should == "GET"
+ response["REQUEST_PATH"].should == "/test/foo"
+ response["PATH_INFO"].should == "/test/foo"
+ response["QUERY_STRING"].should == "quux=1"
+ end
+
+ specify "should have CGI headers on POST" do
+ POST("/test", {"rack-form-data" => "23"}, {'X-test-header' => '42'})
+ status.should == 200
+ response["REQUEST_METHOD"].should == "POST"
+ response["REQUEST_PATH"].should == "/test"
+ response["QUERY_STRING"].should == ""
+ response["HTTP_X_TEST_HEADER"].should == "42"
+ response["test.postdata"].should == "rack-form-data=23"
+ end
+
+ specify "should support HTTP auth" do
+ GET("/test", {:user => "ruth", :passwd => "secret"})
+ response["HTTP_AUTHORIZATION"].should == "Basic cnV0aDpzZWNyZXQ="
+ end
+
+ specify "should set status" do
+ GET("/test?secret")
+ status.should == 403
+ response["rack.url_scheme"].should == "http"
+ end
+
+# teardown do
+# end
+end
+
+rescue LoadError => e
+ $stderr.puts e
+ $stderr.puts e.backtrace
+ $stderr.puts "Skipping Rack::Handler::Mizuno tests (Mizuno is required). `gem install mizuno` and try again."
+end

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