Class: JFlow::Activity::Task

Inherits:
Object
  • Object
show all
Defined in:
lib/jflow/activity/task.rb

Constant Summary collapse

MAX_DETAILS_SIZE =

From: docs.aws.amazon.com/amazonswf/latest/apireference/API_FailWorkflowExecutionDecisionAttributes.html

32768
MAX_REASON_SIZE = 
256
TRUNCATION_IDENTIFIER = 
'[TRUNCATED]'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(task) ⇒ Task

Returns a new instance of Task.



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# File 'lib/jflow/activity/task.rb', line 12

def initialize(task)
  @task = task
end

Instance Attribute Details

#task ⇒ Object (readonly)

Returns the value of attribute task.



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# File 'lib/jflow/activity/task.rb', line 10

def task
  @task
end

Instance Method Details

#completed!(result) ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 68

def completed!(result)
  log "Task Completed"
  swf_client.respond_activity_task_completed({
    task_token: token,
    result: result,
  })
end

#definition_options ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 46

def definition_options
  @definition_options ||= JFlow.configuration.activity_map.options_for(name,version)
  raise "Could not find activity definition for #{name}, #{version}" unless @definition_options
  @definition_options
end

#failed!(exception) ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 76

def failed!(exception)
  log "Task Failed #{exception.message}"

  reason = truncate(exception.message, MAX_REASON_SIZE)

  if retryable?(exception)
    converted_exception = JFlow::Exceptions::Common.new(exception)
  else
    converted_exception = JFlow::Exceptions::Fatal.new(exception)
  end

  swf_client.respond_activity_task_failed(
    task_token: token,
    reason: reason,
    details: truncate(YAML.dump_stream(converted_exception, exception.backtrace), MAX_DETAILS_SIZE)
  )
end

#handle_exception(exception) ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 94

def handle_exception(exception)
  JFlow.handle_exception(exception)
end

#input ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 16

def input
  YAML.load(task.input)
end

#klass ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 40

def klass
  @klass_value ||= JFlow.configuration.activity_map.klass_for(name,version)
  raise "Could not find code to run for given activity" unless @klass_value
  @klass_value
end

#method ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 52

def method
  if name.split('.').size > 1
    method = name.split('.').last
  else
    method = "process"
  end
end

#name ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 20

def name
  task.activity_type.name
end

#run! ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 60

def run!
  log "Started #{klass}##{method} with #{input}"

  result = klass.new.send(method, *input) || "done"
  log "Result is #{result.class} #{result}"
  completed!(result)
end

#run_id ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 32

def run_id
  task.workflow_execution.run_id
end

#token ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 28

def token
  task.task_token
end

#version ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 24

def version
  task.activity_type.version
end

#workflow_id ⇒ Object 



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# File 'lib/jflow/activity/task.rb', line 36

def workflow_id
  task.workflow_execution.workflow_id
end