[rackspace|blockstorage] Add snapshots to block storage.

lib/fog/rackspace.rb

@@ -42,15 +42,15 @@ module Fog
       end
     end
 
-    service(:block_storage,   'rackspace/block_storage',  'BlockStorage')
-    service(:cdn,             'rackspace/cdn',            'CDN')
-    service(:compute,         'rackspace/compute',        'Compute')
-    service(:compute_v2,      'rackspace/compute_v2',     'Compute v2')
-    service(:dns,             'rackspace/dns',            'DNS')
-    service(:storage,         'rackspace/storage',        'Storage')
-    service(:load_balancers,  'rackspace/load_balancers', 'LoadBalancers')
-    service(:identity,        'rackspace/identity',       'Identity')
-    service(:databases,       'rackspace/databases',      'Databases')
+    service(:block_storage,    'rackspace/block_storage',     'BlockStorage')
+    service(:cdn,              'rackspace/cdn',               'CDN')
+    service(:compute,          'rackspace/compute',           'Compute')
+    service(:compute_v2,       'rackspace/compute_v2',        'Compute v2')
+    service(:dns,              'rackspace/dns',               'DNS')
+    service(:storage,          'rackspace/storage',           'Storage')
+    service(:load_balancers,   'rackspace/load_balancers',    'LoadBalancers')
+    service(:identity,         'rackspace/identity',          'Identity')
+    service(:databases,        'rackspace/databases',         'Databases')
 
     def self.authenticate(options, connection_options = {})
       rackspace_auth_url = options[:rackspace_auth_url] || "auth.api.rackspacecloud.com"

lib/fog/rackspace/block_storage.rb

@@ -19,17 +19,28 @@ module Fog
       model_path 'fog/rackspace/models/block_storage'
       model :volume
       collection :volumes
+
       model :volume_type
       collection :volume_types
+      model :snapshot
+      collection :snapshots
+
+      model :snapshot
+      collection :snapshots
 
       request_path 'fog/rackspace/requests/block_storage'
       request :create_volume
       request :delete_volume
       request :get_volume
       request :list_volumes
+
       request :get_volume_type
       request :list_volume_types
 
+      request :create_snapshot
+      request :delete_snapshot
+      request :get_snapshot
+      request :list_snapshots
 
       class Mock
         def request(params)

lib/fog/rackspace/models/block_storage/snapshot.rb

@@ -0,0 +1,46 @@
+require 'fog/core/model'
+
+module Fog
+  module Rackspace
+    class BlockStorage
+      class Snapshot < Fog::Model
+        AVAILABLE = 'available'
+        CREATING = 'creating'
+        DELETING = 'deleting'
+        ERROR = 'error'
+        ERROR_DELETING = 'error_deleting'
+
+        identity :id
+
+        attribute :created_at, :aliases => 'createdAt'
+        attribute :state, :aliases => 'status'
+        attribute :display_name
+        attribute :display_description
+        attribute :size
+        attribute :volume_id
+        attribute :availability_zone
+
+        def ready?
+          state == AVAILABLE
+        end
+
+        def save(force = false)
+          requires :volume_id
+          data = connection.create_snapshot(volume_id, {
+            :display_name => display_name,
+            :display_description => display_description,
+            :force => force
+          })
+          merge_attributes(data.body['snapshot'])
+          true
+        end
+
+        def destroy
+          requires :identity
+          connection.delete_snapshot(identity)
+          true
+        end
+      end
+    end
+  end
+end

lib/fog/rackspace/models/block_storage/snapshots.rb

@@ -0,0 +1,25 @@
+require 'fog/core/collection'
+require 'fog/rackspace/models/block_storage/snapshot'
+
+module Fog
+  module Rackspace
+    class BlockStorage
+      class Snapshots < Fog::Collection
+
+        model Fog::Rackspace::BlockStorage::Snapshot
+
+        def all
+          data = connection.list_snapshots.body['snapshots']
+          load(data)
+        end
+
+        def get(snapshot_id)
+          data = connection.get_snapshot(snapshot_id).body['snapshot']
+          new(data)
+        rescue Fog::Rackspace::BlockStorage::NotFound
+          nil
+        end
+      end
+    end
+  end
+end

lib/fog/rackspace/requests/block_storage/create_snapshot.rb

@@ -0,0 +1,26 @@
+module Fog
+  module Rackspace
+    class BlockStorage
+      class Real
+        def create_snapshot(volume_id, options = {})
+          data = {
+            'snapshot' => {
+              'volume_id' => volume_id
+            }
+          }
+
+          data['snapshot']['display_name'] = options[:display_name] unless options[:display_name].nil?
+          data['snapshot']['display_description'] = options[:display_description] unless options[:display_description].nil?
+          data['snapshot']['force'] = options[:force] unless options[:force].nil?
+
+          request(
+            :body => Fog::JSON.encode(data),
+            :expects => [200],
+            :method => 'POST',
+            :path => "snapshots"
+          )
+        end
+      end
+    end
+  end
+end

lib/fog/rackspace/requests/block_storage/delete_snapshot.rb

@@ -0,0 +1,15 @@
+module Fog
+  module Rackspace
+    class BlockStorage
+      class Real
+        def delete_snapshot(snapshot_id)
+          request(
+            :expects => [202],
+            :method => 'DELETE',
+            :path => "snapshots/#{snapshot_id}"
+          )
+        end
+      end
+    end
+  end
+end

lib/fog/rackspace/requests/block_storage/get_snapshot.rb

@@ -0,0 +1,15 @@
+module Fog
+  module Rackspace
+    class BlockStorage
+      class Real
+        def get_snapshot(snapshot_id)
+          request(
+            :expects => [200],
+            :method => 'GET',
+            :path => "snapshots/#{snapshot_id}"
+          )
+        end
+      end
+    end
+  end
+end

lib/fog/rackspace/requests/block_storage/list_snapshots.rb

@@ -0,0 +1,15 @@
+module Fog
+  module Rackspace
+    class BlockStorage
+      class Real
+        def list_snapshots
+          request(
+            :expects => [200],
+            :method => 'GET',
+            :path => 'snapshots'
+          )
+        end
+      end
+    end
+  end
+end