Class: CapistranoMulticonfigParallel::CelluloidWorker

Inherits:
Object
  • Object
show all
Includes:
BaseActorHelper
Defined in:
lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb

Overview

worker that will spawn a child process in order to execute a capistrano job and monitor that process

Defined Under Namespace

Classes: TaskFailed

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from BaseActorHelper

included

Instance Attribute Details

#action_name ⇒ Object

Returns the value of attribute action_name.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def action_name
  @action_name
end

#app_name ⇒ Object

Returns the value of attribute app_name.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def app_name
  @app_name
end

#client ⇒ Object

Returns the value of attribute client.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def client
  @client
end

#current_task_number ⇒ Object

Returns the value of attribute current_task_number.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def current_task_number
  @current_task_number
end

#env_name ⇒ Object

Returns the value of attribute env_name.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def env_name
  @env_name
end

#env_options ⇒ Object

Returns the value of attribute env_options.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def env_options
  @env_options
end

#exit_status ⇒ Object

Returns the value of attribute exit_status.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def exit_status
  @exit_status
end

#filename ⇒ Object

Returns the value of attribute filename.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def filename
  @filename
end

#invocation_chain ⇒ Object

Returns the value of attribute invocation_chain.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def invocation_chain
  @invocation_chain
end

#job ⇒ Hash

Returns options used for executing capistrano task.

Returns:

  • (Hash) —

    options used for executing capistrano task



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 19

class CelluloidWorker
  include CapistranoMulticonfigParallel::BaseActorHelper
  class TaskFailed < StandardError; end

  attr_accessor :job, :manager, :job_id, :app_name, :env_name, :action_name, :env_options, :machine, :client, :task_argv,
                :rake_tasks, :current_task_number, # tracking tasks
                :successfull_subscription, :subscription_channel, :publisher_channel, # for subscriptions and publishing events
                :job_termination_condition, :worker_state, :invocation_chain, :filename, :worker_log, :exit_status

  def work(job, manager)
    @job = job
    @job_id = job.id
    @worker_state = job.status
    @manager = manager
    @job_confirmation_conditions = []
    log_to_file("worker #{@job_id} received #{job.inspect}")
    @subscription_channel = "worker_#{@job_id}"
    @machine = CapistranoMulticonfigParallel::StateMachine.new(@job, Actor.current)
    @manager.setup_worker_conditions(@job)
    manager.register_worker_for_job(job, Actor.current)
  end

  def worker_state
    if Actor.current.alive?
      @machine.state.to_s.green
    else
      job.status = 'dead'
      job.status.upcase.red
    end
  end

  def start_task
    log_to_file("exec worker #{@job_id} starts task")
    @client = CelluloidPubsub::Client.new(actor: Actor.current, enable_debug: debug_websocket?, channel: subscription_channel, log_file_path: websocket_config.fetch('log_file_path', nil))
  end

  def publish_rake_event(data)
    @client.publish(rake_actor_id(data), data)
  end

  def rake_actor_id(_data)
    "rake_worker_#{@job_id}"
  end

  def on_message(message)
    log_to_file("worker #{@job_id} received:  #{message.inspect}")
    if @client.succesfull_subscription?(message)
      @successfull_subscription = true
      execute_after_succesfull_subscription
    else
      handle_subscription(message)
    end
  end

  def execute_after_succesfull_subscription
    async.execute_deploy
    @manager.async.wait_task_confirmations_worker(@job)
  end

  def rake_tasks
    @rake_tasks ||= []
  end

  def invocation_chain
    @invocation_chain ||= []
  end

  def execute_deploy
    log_to_file("invocation chain #{@job_id} is : #{@rake_tasks.inspect}")
    check_child_proces
    command = job.command.to_s
    log_to_file("worker #{@job_id} executes: #{command}")
    @child_process.async.work(@job, command, actor: Actor.current, silent: true)
  end

  def check_child_proces
    @child_process = CapistranoMulticonfigParallel::ChildProcess.new
    Actor.current.link @child_process
    @child_process
  end

  def on_close(code, reason)
    log_to_file("worker #{@job_id} websocket connection closed: #{code.inspect}, #{reason.inspect}")
  end

  def check_gitflow
    return if @job.stage != 'staging' || !@manager.can_tag_staging? || !executed_task?(CapistranoMulticonfigParallel::GITFLOW_TAG_STAGING_TASK)
    @manager.dispatch_new_job(@job, stage: 'production')
  end

  def handle_subscription(message)
    if message_is_about_a_task?(message)
      check_gitflow
      save_tasks_to_be_executed(message)
      async.update_machine_state(message['task']) # if message['action'] == 'invoke'
      log_to_file("worker #{@job_id} state is #{@machine.state}")
      task_approval(message)
    elsif message_is_for_stdout?(message)
      result = Celluloid::Actor[:terminal_server].show_confirmation(message['question'], message['default'])
      publish_rake_event(message.merge('action' => 'stdin', 'result' => result, 'client_action' => 'stdin'))
    else
      log_to_file(message, @job_id)
    end
  end

  def executed_task?(task)
    rake_tasks.present? && rake_tasks.index(task.to_s).present?
  end

  def task_approval(message)
    job_conditions = @manager.job_to_condition[@job_id]
    if job_conditions.present? && configuration.task_confirmations.include?(message['task']) && message['action'] == 'invoke'
      task_confirmation = job_conditions[message['task']]
      task_confirmation[:status] = 'confirmed'
      task_confirmation[:condition].signal(message['task'])
    else
      publish_rake_event(message.merge('approved' => 'yes'))
    end
  end

  def save_tasks_to_be_executed(message)
    log_to_file("worler #{@job_id} current invocation chain : #{rake_tasks.inspect}")
    rake_tasks << message['task'] if rake_tasks.last != message['task']
    invocation_chain << message['task'] if invocation_chain.last != message['task']
  end

  def update_machine_state(name)
    log_to_file("worker #{@job_id} triest to transition from #{@machine.state} to  #{name}")
    @machine.go_to_transition(name.to_s)
    error_message = "worker #{@job_id} task #{name} failed "
    raise(CapistranoMulticonfigParallel::CelluloidWorker::TaskFailed.new(error_message), error_message) if job.failed? # force worker to rollback
  end

  def send_msg(channel, message = nil)
    publish channel, message.present? && message.is_a?(Hash) ? { job_id: @job_id }.merge(message) : { job_id: @job_id, time: Time.now }
  end

  def finish_worker(exit_status)
    log_to_file("worker #{job_id} tries to terminate with exit_status #{exit_status}")
    @manager.mark_completed_remaining_tasks(@job) if Actor.current.alive?
    update_machine_state('FINISHED') if exit_status == 0
    @manager.workers_terminated.signal('completed') if @manager.present? && @manager.alive? && @manager.all_workers_finished?
  end

  def notify_finished(exit_status)
    finish_worker(exit_status)
    return if exit_status == 0
    error_message = "worker #{@job_id} task  failed with exit status #{exit_status.inspect}  "
    raise(CapistranoMulticonfigParallel::CelluloidWorker::TaskFailed.new(error_message), error_message)
  end
end

#job_id ⇒ Object

Returns the value of attribute job_id.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def job_id
  @job_id
end

#job_termination_condition ⇒ Object

Returns the value of attribute job_termination_condition.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def job_termination_condition
  @job_termination_condition
end

#machine ⇒ Object

Returns the value of attribute machine.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def machine
  @machine
end

#manager ⇒ CapistranoMulticonfigParallel::CelluloidManager

Returns the instance of the manager that delegated the job to this worker.

Returns:



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 19

class CelluloidWorker
  include CapistranoMulticonfigParallel::BaseActorHelper
  class TaskFailed < StandardError; end

  attr_accessor :job, :manager, :job_id, :app_name, :env_name, :action_name, :env_options, :machine, :client, :task_argv,
                :rake_tasks, :current_task_number, # tracking tasks
                :successfull_subscription, :subscription_channel, :publisher_channel, # for subscriptions and publishing events
                :job_termination_condition, :worker_state, :invocation_chain, :filename, :worker_log, :exit_status

  def work(job, manager)
    @job = job
    @job_id = job.id
    @worker_state = job.status
    @manager = manager
    @job_confirmation_conditions = []
    log_to_file("worker #{@job_id} received #{job.inspect}")
    @subscription_channel = "worker_#{@job_id}"
    @machine = CapistranoMulticonfigParallel::StateMachine.new(@job, Actor.current)
    @manager.setup_worker_conditions(@job)
    manager.register_worker_for_job(job, Actor.current)
  end

  def worker_state
    if Actor.current.alive?
      @machine.state.to_s.green
    else
      job.status = 'dead'
      job.status.upcase.red
    end
  end

  def start_task
    log_to_file("exec worker #{@job_id} starts task")
    @client = CelluloidPubsub::Client.new(actor: Actor.current, enable_debug: debug_websocket?, channel: subscription_channel, log_file_path: websocket_config.fetch('log_file_path', nil))
  end

  def publish_rake_event(data)
    @client.publish(rake_actor_id(data), data)
  end

  def rake_actor_id(_data)
    "rake_worker_#{@job_id}"
  end

  def on_message(message)
    log_to_file("worker #{@job_id} received:  #{message.inspect}")
    if @client.succesfull_subscription?(message)
      @successfull_subscription = true
      execute_after_succesfull_subscription
    else
      handle_subscription(message)
    end
  end

  def execute_after_succesfull_subscription
    async.execute_deploy
    @manager.async.wait_task_confirmations_worker(@job)
  end

  def rake_tasks
    @rake_tasks ||= []
  end

  def invocation_chain
    @invocation_chain ||= []
  end

  def execute_deploy
    log_to_file("invocation chain #{@job_id} is : #{@rake_tasks.inspect}")
    check_child_proces
    command = job.command.to_s
    log_to_file("worker #{@job_id} executes: #{command}")
    @child_process.async.work(@job, command, actor: Actor.current, silent: true)
  end

  def check_child_proces
    @child_process = CapistranoMulticonfigParallel::ChildProcess.new
    Actor.current.link @child_process
    @child_process
  end

  def on_close(code, reason)
    log_to_file("worker #{@job_id} websocket connection closed: #{code.inspect}, #{reason.inspect}")
  end

  def check_gitflow
    return if @job.stage != 'staging' || !@manager.can_tag_staging? || !executed_task?(CapistranoMulticonfigParallel::GITFLOW_TAG_STAGING_TASK)
    @manager.dispatch_new_job(@job, stage: 'production')
  end

  def handle_subscription(message)
    if message_is_about_a_task?(message)
      check_gitflow
      save_tasks_to_be_executed(message)
      async.update_machine_state(message['task']) # if message['action'] == 'invoke'
      log_to_file("worker #{@job_id} state is #{@machine.state}")
      task_approval(message)
    elsif message_is_for_stdout?(message)
      result = Celluloid::Actor[:terminal_server].show_confirmation(message['question'], message['default'])
      publish_rake_event(message.merge('action' => 'stdin', 'result' => result, 'client_action' => 'stdin'))
    else
      log_to_file(message, @job_id)
    end
  end

  def executed_task?(task)
    rake_tasks.present? && rake_tasks.index(task.to_s).present?
  end

  def task_approval(message)
    job_conditions = @manager.job_to_condition[@job_id]
    if job_conditions.present? && configuration.task_confirmations.include?(message['task']) && message['action'] == 'invoke'
      task_confirmation = job_conditions[message['task']]
      task_confirmation[:status] = 'confirmed'
      task_confirmation[:condition].signal(message['task'])
    else
      publish_rake_event(message.merge('approved' => 'yes'))
    end
  end

  def save_tasks_to_be_executed(message)
    log_to_file("worler #{@job_id} current invocation chain : #{rake_tasks.inspect}")
    rake_tasks << message['task'] if rake_tasks.last != message['task']
    invocation_chain << message['task'] if invocation_chain.last != message['task']
  end

  def update_machine_state(name)
    log_to_file("worker #{@job_id} triest to transition from #{@machine.state} to  #{name}")
    @machine.go_to_transition(name.to_s)
    error_message = "worker #{@job_id} task #{name} failed "
    raise(CapistranoMulticonfigParallel::CelluloidWorker::TaskFailed.new(error_message), error_message) if job.failed? # force worker to rollback
  end

  def send_msg(channel, message = nil)
    publish channel, message.present? && message.is_a?(Hash) ? { job_id: @job_id }.merge(message) : { job_id: @job_id, time: Time.now }
  end

  def finish_worker(exit_status)
    log_to_file("worker #{job_id} tries to terminate with exit_status #{exit_status}")
    @manager.mark_completed_remaining_tasks(@job) if Actor.current.alive?
    update_machine_state('FINISHED') if exit_status == 0
    @manager.workers_terminated.signal('completed') if @manager.present? && @manager.alive? && @manager.all_workers_finished?
  end

  def notify_finished(exit_status)
    finish_worker(exit_status)
    return if exit_status == 0
    error_message = "worker #{@job_id} task  failed with exit status #{exit_status.inspect}  "
    raise(CapistranoMulticonfigParallel::CelluloidWorker::TaskFailed.new(error_message), error_message)
  end
end

#publisher_channel ⇒ Object

Returns the value of attribute publisher_channel.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def publisher_channel
  @publisher_channel
end

#rake_tasks ⇒ Object

Returns the value of attribute rake_tasks.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def rake_tasks
  @rake_tasks
end

#subscription_channel ⇒ Object

Returns the value of attribute subscription_channel.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def subscription_channel
  @subscription_channel
end

#successfull_subscription ⇒ Object

Returns the value of attribute successfull_subscription.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def successfull_subscription
  @successfull_subscription
end

#task_argv ⇒ Object

Returns the value of attribute task_argv.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def task_argv
  @task_argv
end

#worker_log ⇒ Object

Returns the value of attribute worker_log.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def worker_log
  @worker_log
end

#worker_state ⇒ Object

Returns the value of attribute worker_state.



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 23

def worker_state
  @worker_state
end

Instance Method Details

#check_child_proces ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 94

def check_child_proces
  @child_process = CapistranoMulticonfigParallel::ChildProcess.new
  Actor.current.link @child_process
  @child_process
end

#check_gitflow ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 104

def check_gitflow
  return if @job.stage != 'staging' || !@manager.can_tag_staging? || !executed_task?(CapistranoMulticonfigParallel::GITFLOW_TAG_STAGING_TASK)
  @manager.dispatch_new_job(@job, stage: 'production')
end

#execute_after_succesfull_subscription ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 73

def execute_after_succesfull_subscription
  async.execute_deploy
  @manager.async.wait_task_confirmations_worker(@job)
end

#execute_deploy ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 86

def execute_deploy
  log_to_file("invocation chain #{@job_id} is : #{@rake_tasks.inspect}")
  check_child_proces
  command = job.command.to_s
  log_to_file("worker #{@job_id} executes: #{command}")
  @child_process.async.work(@job, command, actor: Actor.current, silent: true)
end

#executed_task?(task) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 124

def executed_task?(task)
  rake_tasks.present? && rake_tasks.index(task.to_s).present?
end

#finish_worker(exit_status) ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 156

def finish_worker(exit_status)
  log_to_file("worker #{job_id} tries to terminate with exit_status #{exit_status}")
  @manager.mark_completed_remaining_tasks(@job) if Actor.current.alive?
  update_machine_state('FINISHED') if exit_status == 0
  @manager.workers_terminated.signal('completed') if @manager.present? && @manager.alive? && @manager.all_workers_finished?
end

#handle_subscription(message) ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 109

def handle_subscription(message)
  if message_is_about_a_task?(message)
    check_gitflow
    save_tasks_to_be_executed(message)
    async.update_machine_state(message['task']) # if message['action'] == 'invoke'
    log_to_file("worker #{@job_id} state is #{@machine.state}")
    task_approval(message)
  elsif message_is_for_stdout?(message)
    result = Celluloid::Actor[:terminal_server].show_confirmation(message['question'], message['default'])
    publish_rake_event(message.merge('action' => 'stdin', 'result' => result, 'client_action' => 'stdin'))
  else
    log_to_file(message, @job_id)
  end
end

#notify_finished(exit_status) ⇒ Object

Raises:



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 163

def notify_finished(exit_status)
  finish_worker(exit_status)
  return if exit_status == 0
  error_message = "worker #{@job_id} task  failed with exit status #{exit_status.inspect}  "
  raise(CapistranoMulticonfigParallel::CelluloidWorker::TaskFailed.new(error_message), error_message)
end

#on_close(code, reason) ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 100

def on_close(code, reason)
  log_to_file("worker #{@job_id} websocket connection closed: #{code.inspect}, #{reason.inspect}")
end

#on_message(message) ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 63

def on_message(message)
  log_to_file("worker #{@job_id} received:  #{message.inspect}")
  if @client.succesfull_subscription?(message)
    @successfull_subscription = true
    execute_after_succesfull_subscription
  else
    handle_subscription(message)
  end
end

#publish_rake_event(data) ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 55

def publish_rake_event(data)
  @client.publish(rake_actor_id(data), data)
end

#rake_actor_id(_data) ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 59

def rake_actor_id(_data)
  "rake_worker_#{@job_id}"
end

#save_tasks_to_be_executed(message) ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 139

def save_tasks_to_be_executed(message)
  log_to_file("worler #{@job_id} current invocation chain : #{rake_tasks.inspect}")
  rake_tasks << message['task'] if rake_tasks.last != message['task']
  invocation_chain << message['task'] if invocation_chain.last != message['task']
end

#send_msg(channel, message = nil) ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 152

def send_msg(channel, message = nil)
  publish channel, message.present? && message.is_a?(Hash) ? { job_id: @job_id }.merge(message) : { job_id: @job_id, time: Time.now }
end

#start_task ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 50

def start_task
  log_to_file("exec worker #{@job_id} starts task")
  @client = CelluloidPubsub::Client.new(actor: Actor.current, enable_debug: debug_websocket?, channel: subscription_channel, log_file_path: websocket_config.fetch('log_file_path', nil))
end

#task_approval(message) ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 128

def task_approval(message)
  job_conditions = @manager.job_to_condition[@job_id]
  if job_conditions.present? && configuration.task_confirmations.include?(message['task']) && message['action'] == 'invoke'
    task_confirmation = job_conditions[message['task']]
    task_confirmation[:status] = 'confirmed'
    task_confirmation[:condition].signal(message['task'])
  else
    publish_rake_event(message.merge('approved' => 'yes'))
  end
end

#update_machine_state(name) ⇒ Object

Raises:



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 145

def update_machine_state(name)
  log_to_file("worker #{@job_id} triest to transition from #{@machine.state} to  #{name}")
  @machine.go_to_transition(name.to_s)
  error_message = "worker #{@job_id} task #{name} failed "
  raise(CapistranoMulticonfigParallel::CelluloidWorker::TaskFailed.new(error_message), error_message) if job.failed? # force worker to rollback
end

#work(job, manager) ⇒ Object 



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# File 'lib/capistrano_multiconfig_parallel/celluloid/celluloid_worker.rb', line 28

def work(job, manager)
  @job = job
  @job_id = job.id
  @worker_state = job.status
  @manager = manager
  @job_confirmation_conditions = []
  log_to_file("worker #{@job_id} received #{job.inspect}")
  @subscription_channel = "worker_#{@job_id}"
  @machine = CapistranoMulticonfigParallel::StateMachine.new(@job, Actor.current)
  @manager.setup_worker_conditions(@job)
  manager.register_worker_for_job(job, Actor.current)
end