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destination.rb
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destination.rb
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# Copyright 2008-2013 Red Hat, Inc, and individual contributors.
#
# This is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2.1 of
# the License, or (at your option) any later version.
#
# This software is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this software; if not, write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
# 02110-1301 USA, or see the FSF site: http://www.fsf.org.
require 'torquebox/injectors'
require 'torquebox/msc'
require 'torquebox/messaging/session'
require 'torquebox/messaging/connection_factory'
require 'torquebox/messaging/ext/javax_jms_queue_browser'
module TorqueBox
module Messaging
class Destination
include TorqueBox::Injectors
include Enumerable
attr_reader :connection_factory
attr_reader :name
attr_accessor :enumerable_options
attr_accessor :connect_options
PRIORITY_MAP = {
:low => 1,
:normal => 4,
:high => 7,
:critical => 9
}
def _dump(depth)
return self.name.queue_name if self.name.respond_to?( :queue_name )
self.name.to_s
end
def self._load(str)
self.new( str )
end
def initialize(destination, connection_factory_or_options = nil)
raise ArgumentError, "destination cannot be nil" unless destination
if connection_factory_or_options.nil? || connection_factory_or_options.is_a?( Hash )
options = connection_factory_or_options
connection_factory = fetch( 'connection-factory' )
unless options.nil?
# Don't use our internal connection factory if the user
# has specified a host or port to connect to
connection_factory = nil if options[:host] or options[:port]
end
@connection_factory = ConnectionFactory.new( connection_factory )
@connect_options = options || {}
else
@connection_factory = ConnectionFactory.new( connection_factory_or_options )
@connect_options = {}
end
@name = destination
@enumerable_options = {}
end
def publish(message, options = {})
wait_for_destination(options[:startup_timeout]) do
with_session(options) do |session|
session.publish self, message, normalize_options(options)
end
end
end
def receive(options = {}, &block)
wait_for_destination(options[:startup_timeout]) do
func = lambda do
with_session(options) do |session|
session.receive self, options, &block
end
end
if block
TorqueBox.transaction &func
else
func.call
end
end
end
def each(&block)
wait_for_destination do
with_session do |session|
destination = session.java_destination( self )
browser = session.create_browser( destination, enumerable_options[:selector] )
begin
browser.each(&block)
ensure
browser.close
end
end
end
end
def with_session(opts = {})
transactional = opts.fetch(:tx, true)
# https://issues.jboss.org/browse/TORQUE-1033
# If there is no encoding for the message, set the default one
# for the destination. If the encoding for destination isn't set
# it won't hurt
opts[:encoding] = @connect_options[:encoding] if opts[:encoding].nil?
connection_factory.with_new_connection(connect_options, transactional) do |connection|
connection.with_session do |session|
yield session
end
end
end
def wait_for_destination(timeout=nil, &block)
timeout ||= 30_000 # 30s default
start = Time.now
begin
block.call
rescue javax.naming.NameNotFoundException, javax.jms.JMSException
elapsed = (Time.now - start) * 1000
if elapsed > timeout
raise
else
sleep(0.1)
retry
end
end
end
def normalize_options(options)
if options.has_key?(:persistent)
options[:delivery_mode] =
options.delete(:persistent) ? javax.jms::DeliveryMode.PERSISTENT : javax.jms::DeliveryMode.NON_PERSISTENT
end
if options.has_key?(:priority)
if PRIORITY_MAP[options[:priority]]
options[:priority] = PRIORITY_MAP[options[:priority]]
elsif (0..9) === options[:priority].to_i
options[:priority] = options[:priority].to_i
else
raise ArgumentError.new(":priority must in the range 0..9, or one of #{PRIORITY_MAP.keys.collect {|k| ":#{k}"}.join(',')}")
end
end
options
end
def enumerable_options
@enumerable_options ||= { }
@enumerable_options
end
def to_s
name
end
class << self
# List all destinations of this application.
#
# @return Array of {TorqueBox::Messaging::Queue} or {TorqueBox::Messaging::Topic}
# depending on the destination type.
def list
# Get the JMS Manager
TorqueBox::ServiceRegistry.lookup("jboss.messaging.default.jms.manager") do |manager|
# JMSServerControl will let us grab the deployed queue/topic list
server_control = Java::org.hornetq.jms.management.impl.JMSServerControlImpl.new(manager)
# Retrieve the destination list appropriate to the destination type
if self == TorqueBox::Messaging::Topic
names = server_control.topic_names
elsif self == TorqueBox::Messaging::Queue
names = server_control.queue_names
else
names = []
end
names.map { |name| self.new(name) }
end
end
# Lookup a destination of this application by name. A destination could be
# a queue or topic.
#
# @param [String] name of the destination
#
# @return [TorqueBox::Messaging::Queue] or [TorqueBox::Messaging::Topic]
# The destination instance.
def lookup(name)
list.find { |destination| destination.name == name }
end
end
end
end
end