Class: Gorgon::Originator

Inherits:
Object
  • Object
show all
Includes:
Configuration
Defined in:
lib/gorgon/originator.rb

Constant Summary collapse

SPEC_SUCCESS_EXIT_STATUS = 
0
SPEC_FAILURE_EXIT_STATUS = 
1
SYNC_ERROR_EXIT_STATUS = 
2
ERROR_EXIT_STATUS = 
3

Instance Method Summary collapse

Methods included from Configuration

#load_configuration_from_file

Constructor Details

#initialize ⇒ Originator

Returns a new instance of Originator.



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# File 'lib/gorgon/originator.rb', line 28

def initialize
  @configuration = nil
end

Instance Method Details

#callback_handler ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 106

def callback_handler
  @callback_handler ||= CallbackHandler.new(configuration[:job][:callbacks])
end

#cancel_job ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 52

def cancel_job
  ShutdownManager.new(protocol: @protocol, job_state: @job_state).cancel_job
end

#cleanup_if_job_complete ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 123

def cleanup_if_job_complete
  if @job_state.is_job_complete?
    @logger.log "Job is done"
    @protocol.disconnect
  end
end

#connection_information ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 178

def connection_information
  configuration[:connection]
end

#create_job_state_and_observers ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 166

def create_job_state_and_observers
  @job_state = JobState.new files.count
  RuntimeRecorder.new @job_state, configuration[:runtime_file]
  @progress_bar_view = ProgressBarView.new @job_state
  @progress_bar_view.show
  FailuresPrinter.new(configuration, @job_state)
end

#ctrl_c ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 56

def ctrl_c
  puts "\nCtrl-C received! Just wait a moment while I clean up..."
  cancel_job
end

#files ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 182

def files
  @files ||= RuntimeFileReader.new(configuration).sorted_files
end

#handle_new_listener_notification(payload) ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 155

def handle_new_listener_notification(payload)
  payload = Yajl::Parser.new(:symbolize_keys => true).parse(payload)

  if payload[:listener_queue_name]
    @protocol.publish_job_to_one(job_definition, payload[:listener_queue_name])
  else
    puts "Received unexpected payload on originator queue"
    ap payload
  end
end

#handle_reply(payload) ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 130

def handle_reply(payload)
  payload = Yajl::Parser.new(:symbolize_keys => true).parse(payload)

  # at some point this will probably need to be fancy polymorphic type based responses, or at least a nice switch statement
  if payload[:action] == "finish"
    @job_state.file_finished payload
  elsif payload[:action] == "start"
    @job_state.file_started payload
  elsif payload[:type] == "crash"
    @job_state.gorgon_crash_message payload
  elsif payload[:type] == "exception"
    # TODO
    ap payload
  else
    ap payload
  end

  @logger.log_message payload
  # Uncomment this to see each message received by originator
  # ap payload

  cleanup_if_job_complete
  exit_status(payload)
end

#job_definition ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 186

def job_definition
  # TODO: remove duplication. Use sync_configuration
  job_config = configuration[:job]
  job_config[:sync] = {} unless job_config.has_key?(:sync)
  job_config[:sync][:source_tree_path] = source_tree_path(job_config[:sync])
  JobDefinition.new(configuration[:job])
end

#on_disconnect ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 174

def on_disconnect
  EventMachine.stop
end

#originate ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 32

def originate
  begin
    Signal.trap("INT") { ctrl_c }
    Signal.trap("TERM") { ctrl_c }

    exit_status = publish
    @logger.log "Originator finished successfully"
    exit_status
  rescue StandardError
    $stderr.puts "Unhandled exception in originator:"
    $stderr.puts $!.message
    $stderr.puts $!.backtrace.join("\n")
    $stderr.puts "----------------------------------"
    $stderr.puts "Now attempting to cancel the job."
    @logger.log_error "Unhandled Exception!" if @logger
    cancel_job
    exit ERROR_EXIT_STATUS
  end
end

#publish ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 61

def publish
  exit_status = SPEC_SUCCESS_EXIT_STATUS

  @logger = OriginatorLogger.new configuration[:originator_log_file]

  if files.empty?
    $stderr.puts "There are no files to test! Quitting."
    exit ERROR_EXIT_STATUS
  end

  cluster_id = callback_handler.before_originate

  push_source_code

  @protocol = OriginatorProtocol.new(@logger, cluster_id)

  EventMachine.run do
    publish_files_and_job

    @protocol.receive_payloads do |payload|
      exit_status |= handle_reply(payload)
    end

    @protocol.receive_new_listener_notifications do |payload|
      handle_new_listener_notification(payload)
    end
  end

  callback_handler.after_job_finishes
  exit_status
end

#publish_files_and_job ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 93

def publish_files_and_job
  @logger.log "Connecting..."
  @protocol.connect connection_information, :on_closed => method(:on_disconnect)

  @logger.log "Publishing files..."
  @protocol.publish_files files
  create_job_state_and_observers

  @logger.log "Publishing Job..."
  @protocol.publish_job_to_all job_definition
  @logger.log "Job Published"
end

#push_source_code ⇒ Object 



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# File 'lib/gorgon/originator.rb', line 110

def push_source_code
  syncer = SourceTreeSyncer.new(sync_configuration)
  execution_context = syncer.push
  if execution_context.success
    @logger.log "Command '#{execution_context.command}' completed successfully."
  else
    $stderr.puts "Command '#{execution_context.command}' failed!"
    $stderr.puts "Stdout:\n#{execution_context.output}"
    $stderr.puts "Stderr:\n#{execution_context.errors}"
    exit SYNC_ERROR_EXIT_STATUS
  end
end