Class: Pazuzu::Application

Inherits:
Object
  • Object
show all
Includes:
Utility::Runnable
Defined in:
lib/pazuzu/application.rb

Instance Attribute Summary collapse

Attributes included from Utility::Runnable

#started_at, #stopped_at

Instance Method Summary collapse

Methods included from Utility::Runnable

#run_state, #start!, #stop!, #wait_for_state_change!

Constructor Details

#initialize(supervisor, name) ⇒ Application

Returns a new instance of Application.



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# File 'lib/pazuzu/application.rb', line 7

def initialize(supervisor, name)
  super()
  @supervisor = supervisor
  @name = name
  @logger = Utility::AnnotatedLogger.new(supervisor.logger, qname)
  @workers = Utility::RunnablePool.new
  @mutex = Mutex.new
end

Instance Attribute Details

#group ⇒ Object (readonly)

Returns the value of attribute group.



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# File 'lib/pazuzu/application.rb', line 77

def group
  @group
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/pazuzu/application.rb', line 74

def name
  @name
end

#supervisor ⇒ Object (readonly)

Returns the value of attribute supervisor.



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# File 'lib/pazuzu/application.rb', line 75

def supervisor
  @supervisor
end

#user ⇒ Object (readonly)

Returns the value of attribute user.



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# File 'lib/pazuzu/application.rb', line 76

def user
  @user
end

Instance Method Details

#configure!(procfile_path, configuration) ⇒ Object 



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# File 'lib/pazuzu/application.rb', line 16

def configure!(procfile_path, configuration)      
  procfile_path = Procfiles.normalize_procfile_path(procfile_path)

  root_path = File.dirname(procfile_path)

  @user = configuration['user']
  @group = configuration['group']

  workers_config = configuration['workers'] || {}

  leftover_workers = @workers.children.dup

  procfile = YAML.load(File.open(procfile_path))
  procfile = {} unless procfile.is_a?(Hash)
  procfile.each do |name, command_line|
    name = name.to_s

    worker_config = workers_config[name] || {}

    worker = @workers.children.select { |w| w.name == name }.first
    if worker
      leftover_workers.delete(worker)
    else
      @logger.info "Adding worker #{name}"
      worker = Worker.new(self, name)
    end
    worker.configure!(root_path, command_line, worker_config)
    @workers.register(worker)
  end

  leftover_workers.each do |worker|
    @logger.info "Removing worker #{worker.name}"
    @workers.unregister(worker)
  end
end

#log_entries ⇒ Object 



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# File 'lib/pazuzu/application.rb', line 67

def log_entries
  entries = @workers.children.map(&:log_entries)
  entries.flatten!(1)
  entries.sort_by! { |(source, time, message)| time }
  entries
end

#qname ⇒ Object 



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# File 'lib/pazuzu/application.rb', line 52

def qname
  @name
end

#setup_spawned_process! ⇒ Object

Call to set up a forked process according to the application’s configuration.



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# File 'lib/pazuzu/application.rb', line 58

def setup_spawned_process!
  Utility::ProcessSpawning.set_user_and_group!(@user, @group)
  Utility::ProcessSpawning.prepare_child_process!
end

#workers ⇒ Object 



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# File 'lib/pazuzu/application.rb', line 63

def workers
  @workers.children
end