reverse_proxy.rb in rack-reverse-proxy-0.10.0

- old
+ new
@@ -1,131 +1,6 @@
-require 'net/http'
-require 'net/https'
-require "rack-proxy"
-require "rack/reverse_proxy_matcher"
-require "rack/exception"
-require "rack/reverse_proxy/http_streaming_response"
+require "rack_reverse_proxy"
 
+# Re-opening Rack module only to define ReverseProxy constant
 module Rack
-  class ReverseProxy
-    include NewRelic::Agent::Instrumentation::ControllerInstrumentation if defined? NewRelic
-
-    def initialize(app = nil, &b)
-      @app = app || lambda {|env| [404, [], []] }
-      @matchers = []
-      @global_options = {:preserve_host => true, :x_forwarded_host => true, :matching => :all, :replace_response_host => false}
-      instance_eval(&b) if block_given?
-    end
-
-    def call(env)
-      rackreq = Rack::Request.new(env)
-      matcher = get_matcher(rackreq.fullpath, Proxy.extract_http_request_headers(rackreq.env), rackreq)
-      return @app.call(env) if matcher.nil?
-
-      if @global_options[:newrelic_instrumentation]
-        action_name = "#{rackreq.path.gsub(/\/\d+/,'/:id').gsub(/^\//,'')}/#{rackreq.request_method}" # Rack::ReverseProxy/foo/bar#GET
-        perform_action_with_newrelic_trace(:name => action_name, :request => rackreq) do
-          proxy(env, rackreq, matcher)
-        end
-      else
-        proxy(env, rackreq, matcher)
-      end
-    end
-
-    private
-
-    def proxy(env, source_request, matcher)
-      uri = matcher.get_uri(source_request.fullpath,env)
-      if uri.nil?
-        return @app.call(env)
-      end
-      options = @global_options.dup.merge(matcher.options)
-
-      # Initialize request
-      target_request = Net::HTTP.const_get(source_request.request_method.capitalize).new(uri.request_uri)
-
-      # Setup headers
-      target_request_headers = Proxy.extract_http_request_headers(source_request.env)
-
-      if options[:preserve_host]
-        if uri.port == uri.default_port
-          target_request_headers['HOST'] = uri.host
-        else
-          target_request_headers['HOST'] = "#{uri.host}:#{uri.port}"
-        end
-      end
-
-      if options[:x_forwarded_host]
-        target_request_headers['X-Forwarded-Host'] = source_request.host
-        target_request_headers['X-Forwarded-Port'] = "#{source_request.port}"
-      end
-
-      target_request.initialize_http_header(target_request_headers)
-
-      # Basic auth
-      target_request.basic_auth options[:username], options[:password] if options[:username] and options[:password]
-
-      # Setup body
-      if target_request.request_body_permitted? && source_request.body
-        source_request.body.rewind
-        target_request.body_stream    = source_request.body
-      end
-
-      target_request.content_length = source_request.content_length || 0
-      target_request.content_type   = source_request.content_type if source_request.content_type
-
-      # Create a streaming response (the actual network communication is deferred, a.k.a. streamed)
-      target_response = HttpStreamingResponse.new(target_request, uri.host, uri.port)
-
-      # pass the timeout configuration through
-      target_response.set_read_timeout(options[:timeout]) if options[:timeout].to_i > 0
-
-      target_response.use_ssl = "https" == uri.scheme
-
-      # Let rack set the transfer-encoding header
-      response_headers = Rack::Utils::HeaderHash.new Proxy.normalize_headers(format_headers(target_response.headers))
-      response_headers.delete('Transfer-Encoding')
-      response_headers.delete('Status')
-
-      # Replace the location header with the proxy domain
-      if response_headers['Location'] && options[:replace_response_host]
-        response_location = URI(response_headers['location'])
-        response_location.host = source_request.host
-        response_location.port = source_request.port
-        response_headers['Location'] = response_location.to_s
-      end
-
-      [target_response.status, response_headers, target_response.body]
-    end
-
-    def get_matcher(path, headers, rackreq)
-      matches = @matchers.select do |matcher|
-        matcher.match?(path, headers, rackreq)
-      end
-
-      if matches.length < 1
-        nil
-      elsif matches.length > 1 && @global_options[:matching] != :first
-        raise AmbiguousProxyMatch.new(path, matches)
-      else
-        matches.first
-      end
-    end
-
-    def reverse_proxy_options(options)
-      @global_options=options
-    end
-
-    def reverse_proxy(matcher, url=nil, opts={})
-      raise GenericProxyURI.new(url) if matcher.is_a?(String) && url.is_a?(String) && URI(url).class == URI::Generic
-      @matchers << ReverseProxyMatcher.new(matcher,url,opts)
-    end
-
-    def format_headers(headers)
-      headers.reduce({}) do |acc, (key, val)|
-        formated_key = key.split('-').map(&:capitalize).join('-')
-        acc[formated_key] = Array(val)
-	acc
-      end
-    end
-  end
+  ReverseProxy = RackReverseProxy::Middleware
 end