Class: SimplerWorkflow::Workflow
- Inherits:
-
Object
- Object
- SimplerWorkflow::Workflow
show all
- Includes:
- OptionsAsMethods
- Defined in:
- lib/simpler_workflow/workflow.rb
Instance Attribute Summary collapse
Class Method Summary
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Instance Method Summary
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#method_missing
Constructor Details
#initialize(domain, name, version, options = {}) ⇒ Workflow
Returns a new instance of Workflow.
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# File 'lib/simpler_workflow/workflow.rb', line 7
def initialize(domain, name, version, options = {})
Workflow.workflows[[name, version]] ||= begin
default_options = {
:default_task_list => name,
:default_task_start_to_close_timeout => 2 * 60,
:default_execution_start_to_close_timeout => 2 * 60,
:default_child_policy => :terminate
}
@options = default_options.merge(options)
@domain = domain
@name = name
@version = version
self
end
end
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Instance Attribute Details
#domain ⇒ Object
Returns the value of attribute domain.
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# File 'lib/simpler_workflow/workflow.rb', line 5
def domain
@domain
end
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#initial_activity_type ⇒ Object
Returns the value of attribute initial_activity_type.
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# File 'lib/simpler_workflow/workflow.rb', line 5
def initial_activity_type
@initial_activity_type
end
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#name ⇒ Object
Returns the value of attribute name.
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# File 'lib/simpler_workflow/workflow.rb', line 5
def name
@name
end
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#options ⇒ Object
Returns the value of attribute options.
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# File 'lib/simpler_workflow/workflow.rb', line 5
def options
@options
end
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#task_list ⇒ Object
Returns the value of attribute task_list.
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# File 'lib/simpler_workflow/workflow.rb', line 5
def task_list
@task_list
end
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#version ⇒ Object
Returns the value of attribute version.
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# File 'lib/simpler_workflow/workflow.rb', line 5
def version
@version
end
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Class Method Details
.[](name, version) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 180
def self.[](name, version)
workflows[[name, version]]
end
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.register(name, version, workflow) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 184
def self.register(name, version, workflow)
workflows[[name, version]] = workflow
end
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Instance Method Details
#activity_completed(decision_task, event) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 104
def activity_completed(decision_task, event)
if @on_activity_completed && @on_activity_completed.respond_to?(:call)
@on_activity_completed.call(decision_task, event)
else
if event.attributes.keys.include?(:result)
result = Map.from_json(event.attributes.result)
next_activity = result[:next_activity]
activity_type = domain.activity_types[next_activity[:name], next_activity[:version]]
decision_task.schedule_activity_task activity_type, :input => scheduled_event(decision_task, event).attributes.input
else
logger.info("Workflow #{name}, #{version} completed")
decision_task.complete_workflow_execution :result => 'success'
end
end
end
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#activity_failed(decision_task, event) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 120
def activity_failed(decision_task, event)
logger.info("Activity failed.")
if @on_activity_failed && @on_activity_failed.respond_to?(:call)
@on_activity_failed.call(decision_task, event)
else
if event.attributes.keys.include?(:details)
details = Map.from_json(event.attributes.details)
case details.failure_policy.to_sym
when :abort
decision_task.cancel_workflow_execution
when :retry
logger.info("Retrying activity #{last_activity(decision_task, event).name} #{last_activity(decision_task, event).version}")
decision_task.schedule_activity_task last_activity(decision_task, event), :input => last_input(decision_task, event)
end
else
decision_task.cancel_workflow_execution
end
end
end
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#activity_timed_out(decision_task, event) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 140
def activity_timed_out(decision_task, event)
logger.info("Activity timed out.")
if @on_activity_timed_out && @on_activity_timed_out.respond_to?(:call)
@on_activity_timed_out.call(decision_task, event)
else
case event.attributes.timeoutType
when 'START_TO_CLOSE', 'SCHEDULE_TO_START', 'SCHEDULE_TO_CLOSE'
logger.info("Retrying activity #{last_activity(decision_task, event).name} #{last_activity(decision_task, event).version} due to timeout.")
decision_task.schedule_activity_task last_activity(decision_task, event), :input => last_input(decision_task, event)
when 'HEARTBEAT'
decision_task.cancel_workflow_execution
end
end
end
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#decision_loop ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 31
def decision_loop
SimplerWorkflow.child_processes << fork do
$0 = "Workflow: #{name} #{version}"
Signal.trap('QUIT') do
logger.info("Received SIGQUIT")
@time_to_exit = true
end
Signal.trap('INT') do
logger.info("Received SIGINT")
Process.exit!(0)
end
if SimplerWorkflow.after_fork
SimplerWorkflow.after_fork.call
end
loop do
begin
logger.info("Waiting for a decision task for #{name.to_s}, #{version} listening to #{task_list}")
domain.decision_tasks.poll_for_single_task(task_list) do |decision_task|
decision_task.extend AWS::SimpleWorkflow::DecisionTaskAdditions
logger.info("Received decision task")
decision_task.new_events.each do |event|
logger.info("Processing #{event.event_type}")
case event.event_type
when 'WorkflowExecutionStarted'
start_execution(decision_task, event)
when 'ActivityTaskCompleted'
activity_completed(decision_task, event)
when 'ActivityTaskFailed'
activity_failed(decision_task, event)
when 'ActivityTaskTimedOut'
activity_timed_out(decision_task, event)
end
end
end
Process.exit 0 if @time_to_exit
rescue Timeout::Error => e
if @time_to_exit
Process.exit 0
else
retry
end
rescue => e
context = {
:workflow_execution => decision_task.workflow_execution,
:workflow => to_workflow_type,
:decision_task => decision_task
}
SimplerWorkflow.exception_reporter.report(e, context)
raise e
end
end
end
end
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#initial_activity(name, version = nil) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 23
def initial_activity(name, version = nil)
if activity = Activity[name.to_sym, version]
@initial_activity_type = activity.to_activity_type
elsif activity = domain.activity_types[name.to_s, version]
@initial_activity_type = activity
end
end
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#on_activity_completed(&block) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 168
def on_activity_completed(&block)
@on_activity_completed = block
end
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#on_activity_failed(&block) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 172
def on_activity_failed(&block)
@on_activity_failed = block
end
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#on_activity_timed_out(&block) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 176
def on_activity_timed_out(&block)
@on_activity_timed_out = block
end
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#on_start_execution(&block) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 164
def on_start_execution(&block)
@on_start_execution = block
end
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#start_execution(decision_task, event) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 95
def start_execution(decision_task, event)
logger.info "Starting the execution of the job."
if @on_start_execution && @on_start_execution.respond_to?(:call)
@on_start_execution.call(decision_task, event)
else
decision_task.schedule_activity_task initial_activity_type, :input => event.attributes.input
end
end
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#start_workflow(input, options = {}) ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 159
def start_workflow(input, options = {})
options[:input] = input
domain.workflow_types[name.to_s, version].start_execution(options)
end
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#to_workflow_type ⇒ Object
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# File 'lib/simpler_workflow/workflow.rb', line 155
def to_workflow_type
{ :name => name, :version => version }
end
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