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Diffstat (limited to 'chef/lib/chef/queue.rb')
| -rw-r--r-- | chef/lib/chef/queue.rb | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/chef/lib/chef/queue.rb b/chef/lib/chef/queue.rb new file mode 100644 index 0000000000..86eb7df257 --- /dev/null +++ b/chef/lib/chef/queue.rb @@ -0,0 +1,107 @@ +# +# Author:: Adam Jacob (<adam@hjksolutions.com>) +# Copyright:: Copyright (c) 2008 HJK Solutions, LLC +# License:: Apache License, Version 2.0 +# +# 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 File.join(File.dirname(__FILE__), "mixin", "params_validate") + +class Chef + class Queue + require 'stomp' + + @client = nil + + class << self + include Chef::Mixin::ParamsValidate + + def connect + @client = Stomp::Connection.open( + Chef::Config.has_key?(:queue_user) ? Chef::Config[:queue_user] : "", + Chef::Config.has_key?(:queue_password) ? Chef::Config[:queue_password] : "", + Chef::Config.has_key?(:queue_host) ? Chef::Config[:queue_host] : "localhost", + Chef::Config.has_key?(:queue_port) ? Chef::Config[:queue_port] : 61613, + false + ) + end + + def make_url(type, name) + validate( + { + :queue_type => type.to_sym, + :queue_name => name.to_sym, + }, + { + :queue_type => { + :equal_to => [ :topic, :queue ], + }, + :queue_name => { + :kind_of => [ String, Symbol ], + } + } + ) + queue_url = "/#{type}/chef/#{name}" + end + + def subscribe(type, name) + queue_url = make_url(type, name) + Chef::Log.debug("Subscribing to #{queue_url}") + connect if @client == nil + @client.subscribe(queue_url) + end + + def send_msg(type, name, msg) + validate( + { + :message => msg, + }, + { + :message => { + :respond_to => :to_json + } + } + ) + queue_url = make_url(type, name) + json = msg.to_json + connect if @client == nil + Chef::Log.debug("Sending to #{queue_url}: #{json}") + @client.send(queue_url, json) + end + + def receive_msg + connect if @client == nil + raw_msg = @client.receive() + Chef::Log.debug("Received Message from #{raw_msg.headers["destination"]} containing: #{raw_msg.body}") + msg = JSON.parse(raw_msg.body) + return msg, raw_msg.headers + end + + def poll_msg + connect if @client == nil + raw_msg = @client.poll() + if raw_msg + msg = JSON.parse(raw_msg.body) + else + nil + end + end + + def disconnect + raise ArgumentError, "You must call connect before you can disconnect!" unless @client + @client.disconnect + end + end + end +end
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