Added initial logging support.

lib/httparty.rb

@@ -11,6 +11,7 @@
 require 'httparty/net_digest_auth'
 require 'httparty/version'
 require 'httparty/connection_adapter'
+require 'httparty/logger/logger'
 
 # @see HTTParty::ClassMethods
 module HTTParty
@@ -70,6 +71,18 @@ module ClassMethods
 
     extend AllowedFormatsDeprecation
 
+    # Turns on logging
+    #
+    #   class Foo
+    #     include HTTParty
+    #     logger Logger.new('http_logger'), :info, :apache
+    #   end
+    def logger(logger, level=:info, format=:apache)
+      default_options[:logger]     = logger
+      default_options[:log_level]  = level
+      default_options[:log_format] = format
+    end
+
     # Allows setting http proxy information to be used
     #
     #   class Foo

lib/httparty/logger/apache_logger.rb

@@ -0,0 +1,27 @@
+module HTTParty
+  module Logger
+    class ApacheLogger #:nodoc:
+      TAG_NAME = HTTParty.name
+
+      attr_accessor :level, :logger, :current_time
+
+      def initialize(logger, level)
+        @logger = logger
+        @level  = level.to_sym
+      end
+
+      def format(request, response)
+        @current_time  ||= Time.new.strftime("%Y-%m-%d %H:%M:%S.%L %z")
+        http_method    = request.http_method.name.split("::").last.upcase
+        path           = request.path.to_s
+        content_length = response['Content-Length']
+
+        print(response.code, content_length, http_method, path)
+      end
+
+      def print(code, content_length, http_method, path)
+        @logger.send @level, "[#{TAG_NAME}] [#{@current_time}] #{code} \"#{http_method} #{path}\" #{content_length || "-"} "
+      end
+    end
+  end
+end

lib/httparty/logger/curl_logger.rb

@@ -0,0 +1,52 @@
+module HTTParty
+  module Logger
+    class CurlLogger #:nodoc:
+      TAG_NAME = HTTParty.name
+
+      attr_accessor :level, :logger, :current_time
+
+      def initialize(logger, level)
+        @logger = logger
+        @level  = level.to_sym
+      end
+
+      def format(request, response)
+        @messages       = []
+        @current_time ||= Time.new.strftime("%Y-%m-%d %H:%M:%S.%L %z")
+        http_method     = request.http_method.name.split("::").last.upcase
+        path            = request.path.to_s
+
+        print_outgoing "#{http_method} #{path}"
+        if request.options[:headers] && request.options[:headers].size > 0
+          request.options[:headers].each do |k, v|
+            print_outgoing "#{k}: #{v}"
+          end
+        end
+
+        print_outgoing ""
+        print_incoming "HTTP/#{response.http_version} #{response.code}"
+
+        headers = response.respond_to?(:headers) ? response.headers : response
+        response.each_header do |response_header|
+          print_incoming "#{response_header.capitalize}: #{headers[response_header]}"
+        end
+
+        print_incoming "\n#{response.body}"
+
+        @logger.send @level, @messages.join("\n")
+      end
+
+      def print_outgoing(line)
+        @messages << print(">", line)
+      end
+
+      def print_incoming(line)
+        @messages << print("<", line)
+      end
+
+      def print(direction, line)
+        "[#{TAG_NAME}] [#{@current_time}] #{direction} #{line}"
+      end
+    end
+  end
+end

lib/httparty/logger/logger.rb

@@ -0,0 +1,18 @@
+require 'httparty/logger/apache_logger'
+require 'httparty/logger/curl_logger'
+
+module HTTParty
+  module Logger
+    def self.build(logger, level, formatter)
+      level  ||= :info
+      format ||= :apache
+
+      case formatter
+      when :curl
+        Logger::CurlLogger.new(logger, level)
+      else
+        Logger::ApacheLogger.new(logger, level)
+      end
+    end
+  end
+end

lib/httparty/request.rb

@@ -245,6 +245,10 @@ def encode_body(body)
     def handle_response(body, &block)
       if response_redirects?
         options[:limit] -= 1
+        if options[:logger]
+          logger = HTTParty::Logger.build(options[:logger], options[:log_level], options[:log_format])
+          logger.format(self, last_response)
+        end
         self.path = last_response['location']
         self.redirect = true
         self.http_method = Net::HTTP::Get unless options[:maintain_method_across_redirects]

lib/httparty/response.rb

@@ -12,6 +12,11 @@ def initialize(request, response, parsed_block, options={})
       @body         = options[:body] || response.body
       @parsed_block = parsed_block
       @headers      = Headers.new(response.to_hash)
+
+      if request.options[:logger]
+        logger = ::HTTParty::Logger.build(request.options[:logger], request.options[:log_level], request.options[:log_format])
+        logger.format(request, self)
+      end
     end
 
     def parsed_response

spec/httparty/logger/apache_logger_spec.rb

@@ -0,0 +1,26 @@
+require File.expand_path(File.join(File.dirname(__FILE__), '..', '..', 'spec_helper'))
+
+describe HTTParty::Logger::ApacheLogger do
+  describe "#format" do
+    it "formats a response in a style that resembles apache's access log" do
+      request_time = Time.new.strftime("%Y-%m-%d %H:%M:%S.%L %z")
+      log_message = "[HTTParty] [#{request_time}] 302 \"GET http://my.domain.com/my_path\" - "
+
+      request_double  = double(
+        :http_method => Net::HTTP::Get,
+        :path => "http://my.domain.com/my_path"
+      )
+      response_double = double(
+        :code => 302,
+        :[]   => nil
+      )
+
+      logger_double = double
+      logger_double.should_receive(:info).with(log_message)
+
+      subject = described_class.new(logger_double, :info)
+      subject.current_time = request_time
+      subject.format(request_double, response_double)
+    end
+  end
+end

spec/httparty/logger/curl_logger_spec.rb

@@ -0,0 +1,21 @@
+require File.expand_path(File.join(File.dirname(__FILE__), '..', '..', 'spec_helper'))
+
+describe HTTParty::Logger::CurlLogger do
+  describe "#format" do
+    it "formats a response in a style that resembles a -v curl" do
+      request_time = Time.new.strftime("%Y-%m-%d %H:%M:%S.%L %z")
+
+      logger_double = double
+      logger_double.should_receive(:info).with(
+          /\[HTTParty\] \[#{request_time}\] > GET http:\/\/localhost\n/)
+
+      subject = described_class.new(logger_double, :info)
+      subject.current_time = request_time
+
+      stub_http_response_with("google.html")
+
+      response = HTTParty::Request.new.perform
+      subject.format(response.request, response)
+    end
+  end
+end

spec/httparty/logger/logger_spec.rb

@@ -0,0 +1,22 @@
+require File.expand_path(File.join(File.dirname(__FILE__), '..', '..', 'spec_helper'))
+
+describe HTTParty::Logger do
+  describe ".build" do
+    subject { HTTParty::Logger }
+
+    it "defaults level to :info" do
+      logger_double = double()
+      subject.build(logger_double, nil, nil).level.should == :info
+    end
+
+    it "defaults format to :apache" do
+      logger_double = double()
+      subject.build(logger_double, nil, nil).should be_an_instance_of(HTTParty::Logger::ApacheLogger)
+    end
+
+    it "builds :curl style logger" do
+      logger_double = double()
+      subject.build(logger_double, nil, :curl).should be_an_instance_of(HTTParty::Logger::CurlLogger)
+    end
+  end
+end

spec/httparty/request_spec.rb

@@ -517,6 +517,13 @@
         @request.perform.should == {"hash" => {"foo" => "bar"}}
         @request.http_method.should == Net::HTTP::Delete
       end
+
+      it 'should log the redirection' do
+        logger_double = double
+        logger_double.should_receive(:info).twice
+        @request.options[:logger] = logger_double
+        @request.perform
+      end
     end
 
     describe "infinitely" do
@@ -592,4 +599,3 @@
     end
   end
 end
-