[openstack|volume] Volume attach/detach to Server

lib/fog/openstack/compute.rb

@@ -124,6 +124,8 @@ module Fog
       request :create_volume
       request :get_volume_details
       request :delete_volume
+      request :attach_volume
+      request :detach_volume
 
       request :create_volume_snapshot
       request :list_snapshots

lib/fog/openstack/models/compute/volume.rb

@@ -37,6 +37,19 @@ module Fog
           connection.delete_volume(id)
           true
         end
+
+        def attach(server_id, name)
+          requires :id
+          data = connection.attach_volume(id, server_id, name)
+          merge_attributes(:attachments => attachments << data.body['volumeAttachment'])
+          true
+        end
+
+        def detach(server_id, attachment_id)
+          requires :id
+          connection.detach_volume(server_id, attachment_id)
+          true
+        end
       end
 
     end

lib/fog/openstack/requests/compute/attach_volume.rb

@@ -0,0 +1,28 @@
+module Fog
+  module Compute
+    class OpenStack
+      class Real
+
+        def attach_volume(volume_id, server_id, device)
+          data = {
+            'volumeAttachment' => {
+              'volumeId' => volume_id.to_s,
+              'device'   => device
+            }
+          }
+          request(
+            :body     => MultiJson.encode(data),
+            :expects  => [200, 202],
+            :method   => 'POST',
+            :path     => "servers/%s/os-volume_attachments" % [server_id]
+          )
+        end
+
+      end
+
+      class Mock
+      end
+
+    end
+  end
+end

lib/fog/openstack/requests/compute/detach_volume.rb

@@ -0,0 +1,21 @@
+module Fog
+  module Compute
+    class OpenStack
+      class Real
+
+        def detach_volume(server_id, attachment_id)
+          request(
+            :expects  => 202,
+            :method   => 'DELETE',
+            :path     => "servers/%s/os-volume_attachments/%s" % [server_id, attachment_id]
+          )
+        end
+
+      end
+
+      class Mock
+      end
+
+    end
+  end
+end