Adding batch support

google-api-client.gemspec

@@ -29,6 +29,7 @@ Gem::Specification.new do |s|
       s.add_runtime_dependency(%q<multi_json>, [">= 1.3.0"])
       s.add_runtime_dependency(%q<extlib>, [">= 0.9.15"])
       s.add_runtime_dependency(%q<launchy>, [">= 2.0.0"])
+      s.add_runtime_dependency(%q<uuidtools>, [">= 2.1.0"])
       s.add_development_dependency(%q<sinatra>, [">= 1.2.0"])
       s.add_development_dependency(%q<rake>, [">= 0.9.0"])
       s.add_development_dependency(%q<rspec>, ["~> 1.2.9"])
@@ -41,6 +42,7 @@ Gem::Specification.new do |s|
       s.add_dependency(%q<multi_json>, [">= 1.3.0"])
       s.add_dependency(%q<extlib>, [">= 0.9.15"])
       s.add_dependency(%q<launchy>, [">= 2.0.0"])
+      s.add_dependency(%q<uuidtools>, [">= 2.1.0"])
       s.add_dependency(%q<sinatra>, [">= 1.2.0"])
       s.add_dependency(%q<rake>, [">= 0.9.0"])
       s.add_dependency(%q<rspec>, ["~> 1.2.9"])
@@ -54,6 +56,7 @@ Gem::Specification.new do |s|
     s.add_dependency(%q<multi_json>, [">= 1.3.0"])
     s.add_dependency(%q<extlib>, [">= 0.9.15"])
     s.add_dependency(%q<launchy>, [">= 2.0.0"])
+    s.add_dependency(%q<uuidtools>, [">= 2.1.0"])
     s.add_dependency(%q<sinatra>, [">= 1.2.0"])
     s.add_dependency(%q<rake>, [">= 0.9.0"])
     s.add_dependency(%q<rspec>, ["~> 1.2.9"])

lib/google/api_client.rb

@@ -26,6 +26,7 @@ require 'google/api_client/discovery'
 require 'google/api_client/reference'
 require 'google/api_client/result'
 require 'google/api_client/media'
+require 'google/api_client/batch'
 
 module Google
   # TODO(bobaman): Document all this stuff.
@@ -663,22 +664,34 @@ module Google
     ##
     # Executes a request, wrapping it in a Result object.
     #
-    # @param [Google::APIClient::Method, String] api_method
-    #   The method object or the RPC name of the method being executed.
-    # @param [Hash, Array] parameters
-    #   The parameters to send to the method.
-    # @param [String] body The body of the request.
-    # @param [Hash, Array] headers The HTTP headers for the request.
-    # @option options [String] :version ("v1")
-    #   The service version. Only used if `api_method` is a `String`.
-    # @option options [#generate_authenticated_request] :authorization
-    #   The authorization mechanism for the response. Used only if
-    #   `:authenticated` is `true`.
-    # @option options [TrueClass, FalseClass] :authenticated (true)
-    #   `true` if the request must be signed or somehow
-    #   authenticated, `false` otherwise.
+    # @param [Google::APIClient::BatchRequest, Hash, Array] params
+    #   Either a Google::APIClient::BatchRequest, a Hash, or an Array.
     #
-    # @return [Google::APIClient::Result] The result from the API.
+    #   If a Google::APIClient::BatchRequest, no other parameters are expected.
+    #
+    #   If a Hash, the below parameters are handled. If an Array, the
+    #   parameters are assumed to be in the below order:
+    #
+    #   - (Google::APIClient::Method, String) api_method:
+    #     The method object or the RPC name of the method being executed.
+    #   - (Hash, Array) parameters:
+    #     The parameters to send to the method.
+    #   - (String) body: The body of the request.
+    #   - (Hash, Array) headers: The HTTP headers for the request.
+    #   - (Hash) options: A set of options for the request, of which:
+    #     - (String) :version (default: "v1") -
+    #       The service version. Only used if `api_method` is a `String`.
+    #     - (#generate_authenticated_request) :authorization (default: true) -
+    #       The authorization mechanism for the response. Used only if
+    #       `:authenticated` is `true`.
+    #     - (TrueClass, FalseClass) :authenticated (default: true) -
+    #       `true` if the request must be signed or somehow
+    #       authenticated, `false` otherwise.
+    #
+    # @return [Google::APIClient::Result] The result from the API, nil if batch.
+    #
+    # @example
+    #   result = client.execute(batch_request)
     #
     # @example
     #   result = client.execute(
@@ -688,28 +701,64 @@ module Google
     #
     # @see Google::APIClient#generate_request
     def execute(*params)
-      # This block of code allows us to accept multiple parameter passing
-      # styles, and maintaining some backwards compatibility.
-      #
-      # Note: I'm extremely tempted to deprecate this style of execute call.
-      if params.last.respond_to?(:to_hash) && params.size == 1
-        options = params.pop
-      else
-        options = {}
-      end
-      options[:api_method] = params.shift if params.size > 0
-      options[:parameters] = params.shift if params.size > 0
-      options[:body] = params.shift if params.size > 0
-      options[:headers] = params.shift if params.size > 0
-      options[:client] = self
+      if params.last.kind_of?(Google::APIClient::BatchRequest) &&
+          params.size == 1
+        batch = params.pop
+        options = batch.options
+        http_request = batch.to_http_request
+        request = nil
 
-      reference = Google::APIClient::Reference.new(options)
-      request = self.generate_request(reference)
-      response = self.transmit(
-        :request => request,
-        :connection => options[:connection]
-      )
-      return Google::APIClient::Result.new(reference, request, response)
+        if @authorization
+          method, uri, headers, body = http_request
+          method = method.to_s.downcase.to_sym
+
+          faraday_request = Faraday::Request.create(method) do |req|
+            req.url(uri.to_s)
+            req.headers = Faraday::Utils::Headers.new(headers)
+            req.body = body
+          end
+
+          request = {
+            :request => self.generate_authenticated_request(
+              :request => faraday_request,
+              :connection => options[:connection]
+            ),
+            :connection => options[:connection]
+          }
+        else
+          request = {
+            :request => http_request,
+            :connection => options[:connection]
+          }
+        end
+
+        response = self.transmit(request)
+        batch.process_response(response)
+        return nil
+      else
+        # This block of code allows us to accept multiple parameter passing
+        # styles, and maintaining some backwards compatibility.
+        #
+        # Note: I'm extremely tempted to deprecate this style of execute call.
+        if params.last.respond_to?(:to_hash) && params.size == 1
+          options = params.pop
+        else
+          options = {}
+        end
+
+        options[:api_method] = params.shift if params.size > 0
+        options[:parameters] = params.shift if params.size > 0
+        options[:body] = params.shift if params.size > 0
+        options[:headers] = params.shift if params.size > 0
+        options[:client] = self
+        reference = Google::APIClient::Reference.new(options)
+        request = self.generate_request(reference)
+        response = self.transmit(
+          :request => request,
+          :connection => options[:connection]
+        )
+        return Google::APIClient::Result.new(reference, request, response)
+      end
     end
 
     ##

lib/google/api_client/batch.rb

@@ -0,0 +1,300 @@
+# Copyright 2012 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require 'addressable/uri'
+require 'uuidtools'
+
+module Google
+  class APIClient
+
+    # Error class for problems in batch requests.
+    class BatchError < StandardError
+    end
+
+    # Helper class to contain a response to an individual batched call.
+    class BatchedCallResponse
+      attr_reader :call_id
+      attr_accessor :status, :headers, :body
+
+      def initialize(call_id, status = nil, headers = nil, body = nil)
+        @call_id, @status, @headers, @body = call_id, status, headers, body
+      end
+    end
+
+    ##
+    # Wraps multiple API calls into a single over-the-wire HTTP request.
+    class BatchRequest
+
+      BATCH_BOUNDARY = "-----------RubyApiBatchRequest".freeze
+
+      attr_accessor :options
+      attr_reader :calls, :callbacks
+
+      ##
+      # Creates a new batch request.
+      #
+      # @param [Hash] options
+      #   Set of options for this request, the only important one being
+      #   :connection, which specifies an HTTP connection to use.
+      # @param [Proc] block
+      #   Callback for every call's response. Won't be called if a call defined
+      #   a callback of its own.
+      #
+      # @return [Google::APIClient::BatchRequest] The constructed object.
+      def initialize(options = {}, &block)
+        # Request options, ignoring method and parameters.
+        @options = options
+        # Batched calls to be made, indexed by call ID.
+        @calls = {}
+        # Callbacks per batched call, indexed by call ID.
+        @callbacks = {}
+        # Order for the call IDs, since Ruby 1.8 hashes are unordered.
+        @order = []
+        # Global callback to be used for every call. If a specific callback
+        # has been defined for a request, this won't be called.
+        @global_callback = block if block_given?
+        # The last auto generated ID.
+        @last_auto_id = 0
+        # Base ID for the batch request.
+        @base_id = nil
+      end
+
+      ##
+      # Add a new call to the batch request.
+      # Each call must have its own call ID; if not provided, one will
+      # automatically be generated, avoiding collisions. If duplicate call IDs
+      # are provided, an error will be thrown.
+      #
+      # @param [Hash, Google::APIClient::Reference] call: the call to be added.
+      # @param [String] call_id: the ID to be used for this call. Must be unique
+      # @param [Proc] block: callback for this call's response.
+      #
+      # @return [Google::APIClient::BatchRequest] The BatchRequest, for chaining
+      def add(call, call_id = nil, &block)
+        unless call.kind_of?(Google::APIClient::Reference)
+          call = Google::APIClient::Reference.new(call)
+        end
+        if call_id.nil?
+          call_id = new_id
+        end
+        if @calls.include?(call_id)
+          raise BatchError,
+              'A call with this ID already exists: %s' % call_id
+        end
+        @calls[call_id] = call
+        @order << call_id
+        if block_given?
+          @callbacks[call_id] = block
+        elsif @global_callback
+          @callbacks[call_id] = @global_callback
+        end
+        return self
+      end
+
+      ##
+      # Convert this batch request into an HTTP request.
+      #
+      # @return [Array<String, String, Hash, String>]
+      #   An array consisting of, in order: HTTP method, request path, request
+      #   headers and request body.
+      def to_http_request
+        return ['POST', request_uri, request_headers, request_body]
+      end
+
+      ##
+      # Processes the HTTP response to the batch request, issuing callbacks.
+      #
+      # @param [Faraday::Response] response: the HTTP response.
+      def process_response(response)
+        content_type = find_header('Content-Type', response.headers)
+        boundary = /.*boundary=(.+)/.match(content_type)[1]
+        parts = response.body.split(/--#{Regexp.escape(boundary)}/)
+        parts = parts[1...-1]
+        parts.each do |part|
+          call_response = deserialize_call_response(part)
+          callback = @callbacks[call_response.call_id]
+          call = @calls[call_response.call_id]
+          result = Google::APIClient::Result.new(call, nil, call_response)
+          callback.call(result) if callback
+        end
+      end
+
+      private
+
+      ##
+      # Helper method to find a header from its name, regardless of case.
+      #
+      # @param [String] name: The name of the header to find.
+      # @param [Hash] headers: The hash of headers and their values.
+      #
+      # @return [String] The value of the desired header.
+      def find_header(name, headers)
+        _, header = headers.detect do |h, v|
+          h.downcase == name.downcase
+        end
+        return header
+      end
+
+      ##
+      # Create a new call ID. Uses an auto-incrementing, conflict-avoiding ID.
+      #
+      # @return [String] the new, unique ID.
+      def new_id
+        @last_auto_id += 1
+        while @calls.include?(@last_auto_id)
+          @last_auto_id += 1
+        end
+        return @last_auto_id.to_s
+      end
+
+      ##
+      # Convert an id to a Content-ID header value.
+      #
+      # @param [String] call_id: identifier of individual call.
+      #
+      # @return [String]
+      #   A Content-ID header with the call_id encoded into it. A UUID is
+      #   prepended to the value because Content-ID headers are supposed to be
+      #   universally unique.
+      def id_to_header(call_id)
+        if @base_id.nil?
+          # TODO(sgomes): Use SecureRandom.uuid, drop UUIDTools when we drop 1.8
+          @base_id = UUIDTools::UUID.random_create.to_s
+        end
+
+        return '<%s+%s>' % [@base_id, Addressable::URI.encode(call_id)]
+      end
+
+      ##
+      # Convert a Content-ID header value to an id. Presumes the Content-ID
+      # header conforms to the format that id_to_header() returns.
+      #
+      # @param [String] header: Content-ID header value.
+      #
+      # @return [String] The extracted ID value.
+      def header_to_id(header)
+        if !header.start_with?('<') || !header.end_with?('>') ||
+            !header.include?('+')
+          raise BatchError, 'Invalid value for Content-ID: "%s"' % header
+        end
+
+        base, call_id = header[1...-1].split('+')
+        return Addressable::URI.unencode(call_id)
+      end
+
+      ##
+      # Convert a single batched call into a string.
+      #
+      # @param [Google::APIClient::Reference] call: the call to serialize.
+      #
+      # @return [String] The request as a string in application/http format.
+      def serialize_call(call)
+        http_request = call.to_request
+        method = http_request.method.to_s.upcase
+        path = http_request.path.to_s
+        status_line = method + " " + path + " HTTP/1.1"
+        serialized_call = status_line
+        if http_request.headers
+          http_request.headers.each do |header, value|
+            serialized_call << "\r\n%s: %s" % [header, value]
+          end
+        end
+        if http_request.body
+          serialized_call << "\r\n\r\n"
+          serialized_call << http_request.body
+        end
+        return serialized_call
+      end
+
+      ##
+      # Auxiliary method to split the headers from the body in an HTTP response.
+      #
+      # @param [String] response: the response to parse.
+      #
+      # @return [Array<Hash>, String] The headers and the body, separately.
+      def split_headers_and_body(response)
+        headers = {}
+        payload = response.lstrip
+        while payload
+          line, payload = payload.split("\n", 2)
+          line.sub!(/\s+\z/, '')
+          break if line.empty?
+          match = /\A([^:]+):\s*/.match(line)
+          if match
+            headers[match[1]] = match.post_match
+          else
+            raise BatchError, 'Invalid header line in response: %s' % line
+          end
+        end
+        return headers, payload
+      end
+
+      ##
+      # Convert a single batched response into a BatchedCallResponse object.
+      #
+      # @param [Google::APIClient::Reference] response:
+      #   the request to deserialize.
+      #
+      # @return [BatchedCallResponse] The parsed and converted response.
+      def deserialize_call_response(call_response)
+        outer_headers, outer_body = split_headers_and_body(call_response)
+        status_line, payload = outer_body.split("\n", 2)
+        protocol, status, reason = status_line.split(' ', 3)
+
+        headers, body = split_headers_and_body(payload)
+        content_id = find_header('Content-ID', outer_headers)
+        call_id = header_to_id(content_id)
+        return BatchedCallResponse.new(call_id, status.to_i, headers, body)
+      end
+
+      ##
+      # Return the request headers for the BatchRequest's HTTP request.
+      #
+      # @return [Hash] The HTTP headers.
+      def request_headers
+        return {
+          'Content-Type' => 'multipart/mixed; boundary=%s' % BATCH_BOUNDARY
+        }
+      end
+
+      ##
+      # Return the request path for the BatchRequest's HTTP request.
+      #
+      # @return [String] The request path.
+      def request_uri
+        if @calls.nil? || @calls.empty?
+          raise BatchError, 'Cannot make an empty batch request'
+        end
+        # All APIs have the same batch path, so just get the first one.
+        return @calls.first[1].api_method.api.batch_path
+      end
+
+      ##
+      # Return the request body for the BatchRequest's HTTP request.
+      #
+      # @return [String] The request body.
+      def request_body
+        body = ""
+        @order.each do |call_id|
+          body << "--" + BATCH_BOUNDARY + "\r\n"
+          body << "Content-Type: application/http\r\n"
+          body << "Content-ID: %s\r\n\r\n" % id_to_header(call_id)
+          body << serialize_call(@calls[call_id]) + "\r\n\r\n"
+        end
+        body << "--" + BATCH_BOUNDARY + "--"
+        return body
+      end
+    end
+  end
+end

lib/google/api_client/discovery/api.rb

@@ -171,6 +171,21 @@ module Google
         end
       end
 
+      ##
+      # Returns the base URI for batch calls to this service.
+      #
+      # @return [Addressable::URI] The base URI that methods are joined to.
+      def batch_path
+        if @discovery_document['batchPath']
+          return @batch_path ||= (
+            self.document_base.join(Addressable::URI.parse('/' +
+                @discovery_document['batchPath']))
+          ).normalize
+        else
+          return nil
+        end
+      end
+
       ##
       # A list of schemas available for this version of the API.
       #

lib/google/api_client/discovery/method.rb

@@ -28,6 +28,8 @@ module Google
       ##
       # Creates a description of a particular method.
       #
+      # @param [Google::APIClient::API] api
+      #   The API this method belongs to.
       # @param [Addressable::URI] method_base
       #   The base URI for the service.
       # @param [String] method_name
@@ -43,6 +45,12 @@ module Google
         @discovery_document = discovery_document
       end
 
+      ##
+      # Returns the API this method belongs to.
+      #
+      # @return [Google::APIClient::API] The API this method belongs to.
+      attr_reader :api
+
       ##
       # Returns the identifier for the method.
       #
@@ -111,7 +119,7 @@ module Google
           return nil
         end
       end
-      
+
       ##
       # Returns the Schema object for the method's request, if any.
       #
@@ -183,7 +191,7 @@ module Google
           end
           case upload_type.last
           when 'media', 'multipart', 'resumable'
-            uri = self.media_upload.uri_template.expand(parameters)            
+            uri = self.media_upload.uri_template.expand(parameters)
           else
             raise ArgumentException, "Invalid uploadType '#{upload_type}'"
           end
@@ -232,7 +240,7 @@ module Google
           req.body = body
         end
       end
-      
+
 
       ##
       # Returns a <code>Hash</code> of the parameter descriptions for

spec/google/api_client/batch_spec.rb

@@ -0,0 +1,237 @@
+# Copyright 2012 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require 'spec_helper'
+
+require 'google/api_client'
+require 'google/api_client/version'
+
+describe Google::APIClient::BatchRequest do
+  before do
+    @client = Google::APIClient.new
+  end
+
+  it 'should raise an error if making an empty batch request' do
+    batch = Google::APIClient::BatchRequest.new
+
+    (lambda do
+      @client.execute(batch)
+    end).should raise_error(Google::APIClient::BatchError)
+  end
+
+  describe 'with the discovery API' do
+    before do
+      @client.authorization = nil
+      @discovery = @client.discovered_api('discovery', 'v1')
+    end
+
+    describe 'with two valid requests' do
+      before do
+        @call1 = {
+          :api_method => @discovery.apis.get_rest,
+          :parameters => {
+            'api' => 'adsense',
+            'version' => 'v1'
+          }
+        }
+
+        @call2 = {
+          :api_method => @discovery.apis.get_rest,
+          :parameters => {
+            'api' => 'discovery',
+            'version' => 'v1'
+          }
+        }
+      end
+
+      it 'should execute both when using a global callback' do
+        block_called = 0
+        ids = ['first_call', 'second_call']
+        expected_ids = ids.clone
+        batch = Google::APIClient::BatchRequest.new do |result|
+          block_called += 1
+          result.status.should == 200
+          expected_ids.should include(result.response.call_id)
+          expected_ids.delete(result.response.call_id)
+        end
+
+        batch.add(@call1, ids[0])
+        batch.add(@call2, ids[1])
+
+        @client.execute(batch)
+        block_called.should == 2
+      end
+
+      it 'should execute both when using individual callbacks' do
+        batch = Google::APIClient::BatchRequest.new
+
+        call1_returned, call2_returned = false, false
+        batch.add(@call1) do |result|
+          call1_returned = true
+          result.status.should == 200
+        end
+        batch.add(@call2) do |result|
+          call2_returned = true
+          result.status.should == 200
+        end
+
+        @client.execute(batch)
+        call1_returned.should == true
+        call2_returned.should == true
+      end
+
+      it 'should raise an error if using the same call ID more than once' do
+        batch = Google::APIClient::BatchRequest.new
+
+        (lambda do
+          batch.add(@call1, 'my_id')
+          batch.add(@call2, 'my_id')
+        end).should raise_error(Google::APIClient::BatchError)
+      end
+    end
+
+    describe 'with a valid request and an invalid one' do
+      before do
+        @call1 = {
+          :api_method => @discovery.apis.get_rest,
+          :parameters => {
+            'api' => 'adsense',
+            'version' => 'v1'
+          }
+        }
+
+        @call2 = {
+          :api_method => @discovery.apis.get_rest,
+          :parameters => {
+            'api' => 0,
+            'version' => 1
+          }
+        }
+      end
+
+      it 'should execute both when using a global callback' do
+        block_called = 0
+        ids = ['first_call', 'second_call']
+        expected_ids = ids.clone
+        batch = Google::APIClient::BatchRequest.new do |result|
+          block_called += 1
+          expected_ids.should include(result.response.call_id)
+          expected_ids.delete(result.response.call_id)
+          if result.response.call_id == ids[0]
+            result.status.should == 200
+          else
+            result.status.should >= 400
+            result.status.should < 500
+          end
+        end
+
+        batch.add(@call1, ids[0])
+        batch.add(@call2, ids[1])
+
+        @client.execute(batch)
+        block_called.should == 2
+      end
+
+      it 'should execute both when using individual callbacks' do
+        batch = Google::APIClient::BatchRequest.new
+
+        call1_returned, call2_returned = false, false
+        batch.add(@call1) do |result|
+          call1_returned = true
+          result.status.should == 200
+        end
+        batch.add(@call2) do |result|
+          call2_returned = true
+          result.status.should >= 400
+          result.status.should < 500
+        end
+
+        @client.execute(batch)
+        call1_returned.should == true
+        call2_returned.should == true
+      end
+    end
+  end
+
+  describe 'with the calendar API' do
+    before do
+      @client.authorization = nil
+      @calendar = @client.discovered_api('calendar', 'v3')
+    end
+
+    describe 'with two valid requests' do
+      before do
+        event1 = {
+          'summary' => 'Appointment 1',
+          'location' => 'Somewhere',
+          'start' => {
+            'dateTime' => '2011-01-01T10:00:00.000-07:00'
+          },
+          'end' => {
+            'dateTime' => '2011-01-01T10:25:00.000-07:00'
+          },
+          'attendees' => [
+            {
+              'email' => 'myemail@mydomain.tld'
+            }
+          ]
+        }
+
+        event2 = {
+          'summary' => 'Appointment 2',
+          'location' => 'Somewhere as well',
+          'start' => {
+            'dateTime' => '2011-01-02T10:00:00.000-07:00'
+          },
+          'end' => {
+            'dateTime' => '2011-01-02T10:25:00.000-07:00'
+          },
+          'attendees' => [
+            {
+              'email' => 'myemail@mydomain.tld'
+            }
+          ]
+        }
+
+        @call1 = {
+          :api_method => @calendar.events.insert,
+          :parameters => {'calendarId' => 'myemail@mydomain.tld'},
+          :body => JSON.dump(event1),
+          :headers => {'Content-Type' => 'application/json'}
+        }
+
+        @call2 = {
+          :api_method => @calendar.events.insert,
+          :parameters => {'calendarId' => 'myemail@mydomain.tld'},
+          :body => JSON.dump(event2),
+          :headers => {'Content-Type' => 'application/json'}
+        }
+      end
+
+      it 'should convert to a correct HTTP request' do
+        batch = Google::APIClient::BatchRequest.new { |result| }
+        batch.add(@call1, '1').add(@call2, '2')
+        method, uri, headers, body = batch.to_http_request
+        boundary = Google::APIClient::BatchRequest::BATCH_BOUNDARY
+        method.to_s.downcase.should == 'post'
+        uri.to_s.should == 'https://www.googleapis.com/batch'
+        headers.should == {
+          "Content-Type"=>"multipart/mixed; boundary=#{boundary}"
+        }
+        expected_body = /--#{Regexp.escape(boundary)}\nContent-Type: +application\/http\nContent-ID: +<[\w-]+\+1>\n\nPOST +https:\/\/www.googleapis.com\/calendar\/v3\/calendars\/myemail@mydomain.tld\/events +HTTP\/1.1\nContent-Type: +application\/json\n\n#{Regexp.escape(@call1[:body])}\n\n--#{boundary}\nContent-Type: +application\/http\nContent-ID: +<[\w-]+\+2>\n\nPOST +https:\/\/www.googleapis.com\/calendar\/v3\/calendars\/myemail@mydomain.tld\/events HTTP\/1.1\nContent-Type: +application\/json\n\n#{Regexp.escape(@call2[:body])}\n\n--#{Regexp.escape(boundary)}--/
+        body.gsub("\r", "").should =~ expected_body
+      end
+    end
+  end
+end

spec/google/api_client/discovery_spec.rb

@@ -142,6 +142,12 @@ describe Google::APIClient do
       ).name.should == 'delete'
     end
 
+    it 'should define the origin API in discovered methods' do
+      @client.discovered_method(
+        'prediction.training.insert', 'prediction', 'v1.2'
+      ).api.name.should == 'prediction'
+    end
+
     it 'should not find methods that are not in the discovery document' do
       @client.discovered_method(
         'prediction.bogus', 'prediction', 'v1.2'
@@ -165,6 +171,10 @@ describe Google::APIClient do
       @client.preferred_version(:prediction).version.should_not == 'v1'
     end
 
+    it 'should return a batch path' do
+      @client.discovered_api('prediction', 'v1.2').batch_path.should_not be_nil
+    end
+
     it 'should generate valid requests' do
       request = @client.generate_request(
         :api_method => @prediction.training.insert,
@@ -324,6 +334,12 @@ describe Google::APIClient do
       ).name.should == 'list'
     end
 
+    it 'should define the origin API in discovered methods' do
+      @client.discovered_method(
+        'plus.activities.list', 'plus'
+      ).api.name.should == 'plus'
+    end
+
     it 'should not find methods that are not in the discovery document' do
       @client.discovered_method('plus.bogus', 'plus').should == nil
     end
@@ -381,12 +397,22 @@ describe Google::APIClient do
       @client.discovered_api('latitude').version.should == 'v1'
     end
 
+    it 'should return a batch path' do
+      @client.discovered_api('latitude').batch_path.should_not be_nil
+    end
+
     it 'should find methods that are in the discovery document' do
       @client.discovered_method(
         'latitude.currentLocation.get', 'latitude'
       ).name.should == 'get'
     end
 
+    it 'should define the origin API in discovered methods' do
+      @client.discovered_method(
+        'latitude.currentLocation.get', 'latitude'
+      ).api.name.should == 'latitude'
+    end
+
     it 'should not find methods that are not in the discovery document' do
       @client.discovered_method('latitude.bogus', 'latitude').should == nil
     end
@@ -440,10 +466,20 @@ describe Google::APIClient do
       ).name.should == 'get'
     end
 
+    it 'should define the origin API in discovered methods' do
+      @client.discovered_method(
+        'moderator.profiles.get', 'moderator'
+      ).api.name.should == 'moderator'
+    end
+
     it 'should not find methods that are not in the discovery document' do
       @client.discovered_method('moderator.bogus', 'moderator').should == nil
     end
 
+    it 'should return a batch path' do
+      @client.discovered_api('moderator').batch_path.should_not be_nil
+    end
+
     it 'should generate requests against the correct URIs' do
       request = @client.generate_request(
         :api_method => 'moderator.profiles.get',
@@ -490,6 +526,10 @@ describe Google::APIClient do
       @client.discovered_api('adsense').version.should == 'v1'
     end
 
+    it 'should return a batch path' do
+      @client.discovered_api('adsense').batch_path.should_not be_nil
+    end
+
     it 'should find methods that are in the discovery document' do
       @client.discovered_method(
         'adsense.reports.generate', 'adsense'