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#
# 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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