Add possibility to deploy flower

README.md

@@ -116,7 +116,59 @@ end
 * `app_module` – Celery application module. *(default: auto-detect)*
 * `worker_pool` – The Pool implementation used by the Celery worker (gevent,eventlet or prefork). *(default: prefork)*
 * `service_name` – Name of the service to create. *(default: auto-detect)*
-# `user` – User to run the service as. *(default: application owner)*
+* `user` – User to run the service as. *(default: application owner)*
+
+### `application_flower_config`
+
+The `application_flower_config` creates a `flowerconfig.py` configuration file.
+
+```ruby
+application '/srv/myapp' do
+  flower_config do
+    options do
+      broker 'amqp://'
+    end
+  end
+end
+```
+
+#### Actions
+
+* `:deploy` – Create the configuration file. *(default)*
+
+#### Properties
+
+* `path` – Path to write the configuration file to. If given as a directory,
+  create `path/flowerconfig.py`. *(name attribute)*
+* `options` – Hash or block of options to set in the configuration file.
+
+### `application_flower`
+
+The `application_flower` resource creates a service for the `flower` process.
+
+```ruby
+application '/srv/myapp' do
+  flower do
+    config_file 'path/flowerconfig.py`'
+  end
+end
+```
+
+#### Actions
+
+* `:enable` – Create, enable and start the service. *(default)*
+* `:disable` – Stop, disable, and destroy the service.
+* `:start` – Start the service.
+* `:stop` – Stop the service.
+* `:restart` – Stop and then start the service.
+* `:reload` – Send the configured reload signal to the service.
+
+#### Properties
+
+* `path` – Base path for the application. *(name attribute)*
+* `config_file` – path of the configuration file to use *(default: path/flowerconfig)*
+* `service_name` – Name of the service to create. *(default: auto-detect)*
+* `user` – User to run the service as. *(default: application owner)*
 
 ### `application_django`
 

chef/templates/flowerconfig.py.erb

@@ -0,0 +1,5 @@
+# Generated by Chef for <%= @new_resource.to_s %>
+
+<%- @new_resource.options.each do |key, value| -%>
+<%= key %> = <%= PoisePython::Utils.to_python(value) %>
+<%- end -%>

lib/poise_application_python/resources.rb

@@ -18,6 +18,8 @@
 require 'poise_application_python/resources/celery_config'
 require 'poise_application_python/resources/celery_worker'
 require 'poise_application_python/resources/django'
+require 'poise_application_python/resources/flower'
+require 'poise_application_python/resources/flower_config'
 require 'poise_application_python/resources/gunicorn'
 require 'poise_application_python/resources/pip_requirements'
 require 'poise_application_python/resources/python'

lib/poise_application_python/resources/flower.rb

@@ -0,0 +1,66 @@
+#
+# Copyright 2015-2016, 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 'uri'
+
+require 'chef/provider'
+require 'chef/resource'
+require 'poise'
+require 'poise_application'
+require 'poise_python'
+
+require 'poise_application_python/app_mixin'
+require 'poise_application_python/service_mixin'
+require 'poise_application_python/error'
+
+
+module PoiseApplicationPython
+  module Resources
+    # (see FlowerConfig::Resource)
+    # @since 4.1.0
+    module Flower
+      # @since 4.1.0
+      class Resource < Chef::Resource
+        include PoiseApplicationPython::ServiceMixin
+        provides(:application_flower)
+        attribute(:config_file, kind_of: [String, NilClass], default: lazy { default_path })
+
+        private
+
+        def default_path
+          if ::File.directory?(name)
+            ::File.join(name, 'flowerconfig.py')
+          else
+            name
+          end
+        end
+      end
+
+      class Provider < Chef::Provider
+        include PoiseApplicationPython::ServiceMixin
+        provides(:application_flower)
+
+        private
+
+        def service_options(resource)
+            super
+            raise PoiseApplicationPython::Error.new("Unable to determine configuration file for #{new_resource}") unless new_resource.config_file
+            resource.command("#{new_resource.python} -m flower --conf=#{new_resource.config_file}")
+        end
+      end
+    end
+  end
+end

lib/poise_application_python/resources/flower_config.rb

@@ -0,0 +1,109 @@
+#
+# Copyright 2015-2016, 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 'uri'
+
+require 'chef/provider'
+require 'chef/resource'
+require 'poise'
+require 'poise_application'
+require 'poise_python'
+
+require 'poise_application_python/app_mixin'
+require 'poise_application_python/service_mixin'
+require 'poise_application_python/error'
+
+
+module PoiseApplicationPython
+  module Resources
+    # (see CeleryConfig::Resource)
+    # @since 4.1.0
+    module FlowerConfig
+      # An `application_flower_config` resource to configure flower monitoring app.
+      #
+      # @since 4.1.0
+      # @provides application_flower_config
+      # @action deploy
+      # @example
+      #   application '/srv/myapp' do
+      #     git '...'
+      #     pip_requirements
+      #     flower_config do
+      #       options do
+      #         btoker '...'
+      #       end
+      #     end
+      #   end
+      class Resource < Chef::Resource
+        include PoiseApplicationPython::AppMixin
+        provides(:application_flower_config)
+        actions(:deploy)
+
+        attribute('', template: true, default_source: 'flowerconfig.py.erb')
+        # @!attribute group
+        #   Owner for the Flower application, defaults to application group.
+        #   @return [String]
+        attribute(:group, kind_of: String, default: lazy { parent && parent.group })
+        # @!attribute owner
+        #   Owner for the Flower application, defaults to application owner.
+        #   @return [String]
+        attribute(:owner, kind_of: String, default: lazy { parent && parent.owner })
+        attribute(:path, kind_of: String, default: lazy { default_path })
+
+        private
+
+        def default_path
+          if ::File.directory?(name)
+            ::File.join(name, 'flowerconfig.py')
+          else
+            name
+          end
+        end
+      end
+
+      # Provider for `application_flower_config`.
+      #
+      # @since 4.1.0
+      # @see Resource
+      # @provides application_flower_config
+      class Provider < Chef::Provider
+        include PoiseApplicationPython::AppMixin
+        provides(:application_flower_config)
+
+        # `deploy` action for `application_flower_config`. Writes config file.
+        #
+        # @return [void]
+        def action_deploy
+          notifying_block do
+            write_config
+          end
+        end
+
+        private
+
+        def write_config
+          file new_resource.path do
+            content new_resource.content
+            mode '640'
+            owner new_resource.owner
+            group new_resource.group
+          end
+        end
+
+      end
+    end
+  end
+end

lib/poise_application_python/version.rb

@@ -15,5 +15,5 @@
 #
 
 module PoiseApplicationPython
-  VERSION = '4.0.1.pre'
+  VERSION = '4.1.0'
 end

test/spec/resources/flower_config_spec.rb

@@ -0,0 +1,58 @@
+#
+# Copyright 2015-2017, 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 'spec_helper'
+
+describe PoiseApplicationPython::Resources::FlowerConfig do
+  step_into(:application_flower_config)
+  before do
+    allow(File).to receive(:directory?).and_call_original
+    allow(File).to receive(:directory?).with('/test').and_return(true)
+  end
+
+  context 'with defaults' do
+    recipe do
+      application_flower_config '/test'
+    end
+    it { is_expected.to deploy_application_flower_config('/test').with(path: '/test/flowerconfig.py') }
+    it { is_expected.to render_file('/test/flowerconfig.py').with_content(eq(<<-FLOWERCONFIG)) }
+# Generated by Chef for application_flower_config[/test]
+
+FLOWERCONFIG
+  end # /context with defaults
+
+  context 'with a specific path' do
+    recipe do
+      application_flower_config '/test/foo.py'
+    end
+    it { is_expected.to deploy_application_flower_config('/test/foo.py').with(path: '/test/foo.py') }
+  end # /context with a specific path
+
+  context 'with template options' do
+    recipe do
+      application_flower_config '/test' do
+        options do
+          broker 'amqp://'
+        end
+      end
+    end
+    it { is_expected.to render_file('/test/flowerconfig.py').with_content(eq(<<-FLOWERCONFIG)) }
+# Generated by Chef for application_flower_config[/test]
+
+broker = "amqp://"
+FLOWERCONFIG
+  end # /context with template options
+end