Module: ActiveMessaging

Defined in:
lib/activemessaging/filter.rb,
lib/activemessaging.rb,
lib/activemessaging/adapter.rb,
lib/activemessaging/gateway.rb,
lib/activemessaging/railtie.rb,
lib/activemessaging/version.rb,
lib/activemessaging/processor.rb,
lib/activemessaging/test_helper.rb,
lib/activemessaging/adapters/jms.rb,
lib/activemessaging/adapters/sqs.rb,
lib/activemessaging/adapters/wmq.rb,
lib/activemessaging/base_message.rb,
lib/activemessaging/adapters/amqp.rb,
lib/activemessaging/adapters/asqs.rb,
lib/activemessaging/adapters/base.rb,
lib/activemessaging/adapters/test.rb,
lib/activemessaging/adapters/stomp.rb,
lib/activemessaging/adapters/synch.rb,
lib/activemessaging/message_sender.rb,
lib/activemessaging/threaded_poller.rb,
lib/activemessaging/adapters/beanstalk.rb,
lib/activemessaging/adapters/reliable_msg.rb,
lib/generators/active_messaging/install/install_generator.rb,
lib/generators/active_messaging/processor/processor_generator.rb

Overview

This is meant to avoid the need to use a broker in development, and generally make development mode easier

Defined Under Namespace

Modules: Adapter, Adapters, MessageSender, TestHelper Classes: AbortMessageException, BaseMessage, Destination, Filter, Gateway, InstallGenerator, MessageReceiver, MockLogger, Processor, ProcessorGenerator, Railtie, StopFilterException, StopProcessingException, Subscription, TestMessage, ThreadedPoller, Worker

Constant Summary collapse

ROOT = 
File.expand_path(File.join(File.dirname(__FILE__), '..'))
VERSION = 
"0.14.2"
@@logger = 
nil

Class Method Summary collapse

Class Method Details

.app_env ⇒ Object 



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# File 'lib/activemessaging.rb', line 42

def self.app_env
  @@app_env  ||= ((defined?(::Rails) && ::Rails.env)  || ENV['RAILS_ENV']  || ENV['APP_ENV']  || 'development')
end

.app_root ⇒ Object 



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# File 'lib/activemessaging.rb', line 38

def self.app_root
  @@app_root ||= ((defined?(::Rails) && ::Rails.root) || ENV['RAILS_ROOT'] || ENV['APP_ROOT'] || File.expand_path(Dir.pwd))
end

.load_activemessaging ⇒ Object 



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# File 'lib/activemessaging.rb', line 103

def self.load_activemessaging
  load_extensions
  load_config
  load_processors
end

.load_config ⇒ Object 



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# File 'lib/activemessaging.rb', line 66

def self.load_config
  # Skip loading config if there are no custom processors as the generator
  # is likely running since application_processor.rb and another processor
  # should exist when running rails.
  if Dir["#{app_root}/app/processors/*.rb"].size() <= 1
    return
  end
  path = File.expand_path("#{app_root}/config/messaging.rb")
  begin
    load path
  rescue
    raise $!, " ActiveMessaging: problems trying to load '#{path}': \n\t#{$!.message}"
  end
end

.load_extensions ⇒ Object 



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# File 'lib/activemessaging.rb', line 46

def self.load_extensions
  require 'logger'
  require 'activemessaging/gateway'
  require 'activemessaging/adapter'
  require 'activemessaging/message_sender'
  require 'activemessaging/processor'
  require 'activemessaging/filter'
  require 'activemessaging/trace_filter'

  # load all under the adapters dir
  Dir[File.join(ROOT, 'lib', 'activemessaging', 'adapters', '*.rb')].each do |a|
    begin
      adapter_name = File.basename(a, ".rb")
      require 'activemessaging/adapters/' + adapter_name
    rescue RuntimeError, LoadError => e
      logger.warn "ActiveMessaging: adapter #{adapter_name} not loaded: #{ e.message }"
    end
  end
end

.load_processors(first = true) ⇒ Object 



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# File 'lib/activemessaging.rb', line 81

def self.load_processors(first=true)
  logger.info "ActiveMessaging: Loading #{app_root}/app/processors/application_processor.rb" if first
  load "#{app_root}/app/processors/application_processor.rb" if File.exist?("#{app_root}/app/processors/application_processor.rb")
  Dir["#{app_root}/app/processors/*.rb"].each do |f|
    unless f.match(/\/application_processor.rb/)
      logger.info "ActiveMessaging: Loading #{f}" if first
      load f
    end
  end
end

.logger ⇒ Object 



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# File 'lib/activemessaging.rb', line 27

def self.logger
  @@logger = nil unless defined? @@logger
  @@logger ||= Rails.logger if defined? Rails
  @@logger ||= Logger.new(STDOUT)
  @@logger
end

.logger=(logger) ⇒ Object 



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# File 'lib/activemessaging.rb', line 34

def self.logger=(logger)
  @@logger = logger
end

.reload_activemessaging ⇒ Object 



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# File 'lib/activemessaging.rb', line 92

def self.reload_activemessaging
  # this is resetting the messaging.rb
  ActiveMessaging::Gateway.filters = []
  ActiveMessaging::Gateway.named_destinations = {}
  ActiveMessaging::Gateway.processor_groups = {}

  # now load the config
  load_config
  load_processors(false)
end

.start ⇒ Object 



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# File 'lib/activemessaging.rb', line 109

def self.start
  if ActiveMessaging::Gateway.subscriptions.empty?
    err_msg = <<-EOM

    ActiveMessaging Error: No subscriptions.

    If you have no processor classes in app/processors, add them using the command:
      script/generate processor DoSomething"

    If you have processor classes, make sure they include in the class a call to 'subscribes_to':
      class DoSomethingProcessor < ActiveMessaging::Processor
        subscribes_to :do_something
        # ...
      end

    EOM
    puts err_msg
    logger.error err_msg
    exit
  end

  Gateway.start
end