[google|dns] Add get method to RRSet

- Add "get" method and tests to Resource Record Sets

lib/fog/google/examples/dns/zones.rb

@@ -21,6 +21,10 @@ def test
   puts '------------------------------------'
   zone.records
 
+  puts 'Get the Record...'
+  puts '-----------------'
+  record = connection.records(zone: zone).get(name: 'test.example.org.', type: 'A')
+
   puts 'Modify the "A" Record...'
   puts '------------------------'
   record.modify(ttl: 2600)

lib/fog/google/models/dns/record.rb

@@ -51,6 +51,18 @@ module Fog
           self
         end
 
+        ##
+        # Reloads a Resource Record Sets resource
+        #
+        # @return [Fog::DNS::Google::Record] Resource Record Sets resource
+        def reload
+          requires :name, :type
+
+          data = collection.get(self.name, self.type)
+          merge_attributes(data.attributes)
+          self
+        end
+
         ##
         # Creates a new Resource Record Sets resource
         #

lib/fog/google/models/dns/records.rb

@@ -22,6 +22,21 @@ module Fog
           []
         end
 
+        ##
+        # Fetches the representation of an existing Resource Record Set
+        #
+        # @param [String] name Resource Record Set name
+        # @param [String] type Resource Record Set type
+        # @return [Fog::DNS::Google::Record] Resource Record Set resource
+        def get(name, type)
+          requires :zone
+
+          records = service.list_resource_record_sets(zone.identity, { :name => name, :type => type }).body['rrsets'] || []
+          records.any? ? new(records.first) : nil
+        rescue Fog::Errors::NotFound
+          nil
+        end
+
         ##
         # Creates a new instance of a Resource Record Set
         #

lib/fog/google/requests/dns/list_resource_record_sets.rb

@@ -6,19 +6,23 @@ module Fog
       #
       # @see https://developers.google.com/cloud-dns/api/v1beta1/resourceRecordSets/list
       class Real
-        def list_resource_record_sets(zone_name_or_id)
+        def list_resource_record_sets(zone_name_or_id, options = {})
           api_method = @dns.resource_record_sets.list
           parameters = {
             'project' => @project,
             'managedZone' => zone_name_or_id,
           }
 
+          [:name, :type].reject{ |o| options[o].nil? }.each do |key|
+            parameters[key] = options[key]
+          end
+
           request(api_method, parameters)
         end
       end
 
       class Mock
-        def list_resource_record_sets(zone_name_or_id)
+        def list_resource_record_sets(zone_name_or_id, options = {})
           if self.data[:managed_zones].has_key?(zone_name_or_id)
             zone = self.data[:managed_zones][zone_name_or_id]
           else
@@ -29,9 +33,14 @@ module Fog
             raise Fog::Errors::NotFound, "The 'parameters.managedZone' resource named '#{zone_name_or_id}' does not exist."
           end
 
+          rrsets = self.data[:resource_record_sets][zone['id']]
+          if options.has_key?(:name) && options.has_key?(:type)
+            rrsets.delete_if { |rrset| rrset['name'] != options[:name] || rrset['type'] != options[:type] }
+          end
+
           body = {
             'kind' => 'dns#resourceRecordSetsListResponse',
-            'rrsets' => self.data[:resource_record_sets][zone['id']],
+            'rrsets' => rrsets,
           }
           build_excon_response(body)
         end

tests/google/models/dns/record_tests.rb

@@ -28,6 +28,10 @@ Shindo.tests('Fog::DNS[:google] | record model', ['google']) do
       @record.modify({ :ttl => 2600 })
     end
 
+    tests('#reload').succeeds do
+      @record.reload
+    end
+
     tests('#destroy').succeeds do
       @record.destroy
     end

tests/google/models/dns/records_tests.rb

@@ -6,19 +6,31 @@ Shindo.tests('Fog::DNS[:google] | records model', ['google']) do
   end
 
   @dns = Fog::DNS[:google]
+  @zone = @dns.zones.create(
+    :name => Fog::Mock.random_letters(16),
+    :domain => ENV['FOG_TEST_GOOGLE_DNS_ZONE'] || generate_unique_domain,
+    :description => 'Fog test domain'
+  )
 
   tests('success') do
-    @zone = @dns.zones.create(
-      :name => Fog::Mock.random_letters(16),
-      :domain => ENV['FOG_TEST_GOOGLE_DNS_ZONE'] || generate_unique_domain,
-      :description => 'Fog test domain'
-    )
 
     tests('#all').succeeds do
       @dns.records(:service => @dns, :zone => @zone).all
     end
 
-    @zone.destroy
+    tests('#get').succeeds do
+      @dns.records(:service => @dns, :zone => @zone).get(@zone.domain, 'NS')
+    end
+
   end
 
+  tests('failure') do
+
+    tests('#get').returns(nil) do
+      @dns.records(:service => @dns, :zone => @zone).get(@zone.domain, 'A')
+    end
+
+  end
+
+  @zone.destroy
 end

tests/google/requests/dns/record_tests.rb

@@ -31,6 +31,10 @@ Shindo.tests('Fog::DNS[:google] | record requests', ['google']) do
       @dns.list_resource_record_sets(@zone.identity).body
     end
 
+    tests('#list_resource_record_sets (with name and type)').formats(@list_resource_record_sets_format) do
+      @dns.list_resource_record_sets(@zone.identity, { :name => @zone.domain, :type => 'NS' }).body
+    end
+
     @zone.destroy
   end