Initial Chef repository

cookbooks/poise/files/halite_gem/poise/subcontext/resource_collection.rb

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+#
+# Copyright 2013-2015, Noah Kantrowitz
+#
+# 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 'chef/resource_collection'
+
+
+module Poise
+  module Subcontext
+    # A subclass of the normal Chef ResourceCollection that creates a partially
+    # isolated set of resources. Notifications and other resources lookups can
+    # propagate out to parent contexts but not back in. This is used to allow
+    # black-box resources that are still aware of things in upper contexts.
+    #
+    # @api private
+    # @since 1.0.0
+    class ResourceCollection < Chef::ResourceCollection
+      attr_accessor :parent
+
+      def initialize(parent)
+        @parent = parent
+        super()
+      end
+
+      def lookup(resource)
+        super
+      rescue Chef::Exceptions::ResourceNotFound
+        @parent.lookup(resource)
+      end
+
+      # Iterate and expand all nested contexts
+      def recursive_each(&block)
+        if @parent
+          if @parent.respond_to?(:recursive_each)
+            @parent.recursive_each(&block)
+          else
+            @parent.each(&block)
+          end
+        end
+        each(&block)
+      end
+    end
+  end
+end

cookbooks/poise/files/halite_gem/poise/subcontext/runner.rb

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+#
+# Copyright 2013-2015, Noah Kantrowitz
+#
+# 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 'chef/runner'
+
+
+module Poise
+  module Subcontext
+    # A subclass of the normal Chef Runner that migrates delayed notifications
+    # to the enclosing run_context instead of running them at the end of the
+    # subcontext convergence.
+    #
+    # @api private
+    # @since 1.0.0
+    class Runner < Chef::Runner
+      def initialize(resource, *args)
+        super(*args)
+        @resource = resource
+      end
+
+      def run_delayed_notifications(error=nil)
+        # If there is an error, just do the normal thing. The return shouldn't
+        # ever fire because the superclass re-raises if there is an error.
+        return super if error
+        delayed_actions.each do |notification|
+          notifications = run_context.delayed_notifications(@resource)
+          if run_context.delayed_notifications(@resource).any? { |existing_notification| existing_notification.duplicates?(notification) }
+              Chef::Log.info( "#{@resource} not queuing delayed action #{notification.action} on #{notification.resource}"\
+                              " (delayed), as it's already been queued")
+          else
+            notifications << notification
+          end
+        end
+      end
+    end
+  end
+end