Add basic logging support for logging outgoing requests.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5343 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activeresource/CHANGELOG

 *SVN*
 
+* Add basic logging support for logging outgoing requests. [Jamis Buck]
+
 * Add Base.delete for deleting resources without having to instantiate them first. [Jamis Buck]
 
 * Make #save behavior mimic AR::Base#save (true on success, false on failure). [Jamis Buck]

activeresource/lib/active_resource/base.rb

@@ -2,6 +2,10 @@
 
 module ActiveResource
   class Base
+    # The logger for logging diagnostic and trace information during ARes
+    # calls.
+    cattr_accessor :logger
+
     class << self
       attr_reader :site
 

activeresource/lib/active_resource/connection.rb

@@ -2,6 +2,7 @@
 require 'date'
 require 'time'
 require 'uri'
+require 'benchmark'
 
 module ActiveResource
   class ConnectionError < StandardError
@@ -63,8 +64,12 @@ def post(path, body = '')
     end
 
     private
-      def request(method, *arguments)
-        handle_response(http.send(method, *arguments))
+      def request(method, path, *arguments)
+        logger.info "requesting #{method.to_s.upcase} #{site.scheme}://#{site.host}:#{site.port}#{path}" if logger
+        result = nil
+        time = Benchmark.realtime { result = http.send(method, path, *arguments) }
+        logger.info "--> #{result.code} #{result.message} (#{result.body.length}b %.2fs)" % time if logger
+        handle_response(result)
       end
 
       def handle_response(response)
@@ -103,5 +108,9 @@ def build_request_headers
       def authorization_header
         (@site.user || @site.password ? { 'Authorization' => 'Basic ' + ["#{@site.user}:#{ @site.password}"].pack('m').delete("\r\n") } : {})
       end
+
+      def logger
+        ActiveResource::Base.logger
+      end
   end
 end