/usr/lib/python2.7/dist-packages/boto/swf/layer2.py is in python-boto 2.34.0-2.
This file is owned by root:root, with mode 0o644.
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import time
from functools import wraps
from boto.swf.layer1 import Layer1
from boto.swf.layer1_decisions import Layer1Decisions
DEFAULT_CREDENTIALS = {
'aws_access_key_id': None,
'aws_secret_access_key': None
}
def set_default_credentials(aws_access_key_id, aws_secret_access_key):
"""Set default credentials."""
DEFAULT_CREDENTIALS.update({
'aws_access_key_id': aws_access_key_id,
'aws_secret_access_key': aws_secret_access_key,
})
class SWFBase(object):
name = None
domain = None
aws_access_key_id = None
aws_secret_access_key = None
region = None
def __init__(self, **kwargs):
# Set default credentials.
for credkey in ('aws_access_key_id', 'aws_secret_access_key'):
if DEFAULT_CREDENTIALS.get(credkey):
setattr(self, credkey, DEFAULT_CREDENTIALS[credkey])
# Override attributes with keyword args.
for kwarg in kwargs:
setattr(self, kwarg, kwargs[kwarg])
self._swf = Layer1(self.aws_access_key_id,
self.aws_secret_access_key,
region=self.region)
def __repr__(self):
rep_str = str(self.name)
if hasattr(self, 'version'):
rep_str += '-' + str(getattr(self, 'version'))
return '<%s %r at 0x%x>' % (self.__class__.__name__, rep_str, id(self))
class Domain(SWFBase):
"""Simple Workflow Domain."""
description = None
retention = 30
@wraps(Layer1.describe_domain)
def describe(self):
"""DescribeDomain."""
return self._swf.describe_domain(self.name)
@wraps(Layer1.deprecate_domain)
def deprecate(self):
"""DeprecateDomain"""
self._swf.deprecate_domain(self.name)
@wraps(Layer1.register_domain)
def register(self):
"""RegisterDomain."""
self._swf.register_domain(self.name, str(self.retention),
self.description)
@wraps(Layer1.list_activity_types)
def activities(self, status='REGISTERED', **kwargs):
"""ListActivityTypes."""
act_types = self._swf.list_activity_types(self.name, status, **kwargs)
act_objects = []
for act_args in act_types['typeInfos']:
act_ident = act_args['activityType']
del act_args['activityType']
act_args.update(act_ident)
act_args.update({
'aws_access_key_id': self.aws_access_key_id,
'aws_secret_access_key': self.aws_secret_access_key,
'domain': self.name,
})
act_objects.append(ActivityType(**act_args))
return act_objects
@wraps(Layer1.list_workflow_types)
def workflows(self, status='REGISTERED', **kwargs):
"""ListWorkflowTypes."""
wf_types = self._swf.list_workflow_types(self.name, status, **kwargs)
wf_objects = []
for wf_args in wf_types['typeInfos']:
wf_ident = wf_args['workflowType']
del wf_args['workflowType']
wf_args.update(wf_ident)
wf_args.update({
'aws_access_key_id': self.aws_access_key_id,
'aws_secret_access_key': self.aws_secret_access_key,
'domain': self.name,
})
wf_objects.append(WorkflowType(**wf_args))
return wf_objects
def executions(self, closed=False, **kwargs):
"""List list open/closed executions.
For a full list of available parameters refer to
:py:func:`boto.swf.layer1.Layer1.list_closed_workflow_executions` and
:py:func:`boto.swf.layer1.Layer1.list_open_workflow_executions`
"""
if closed:
executions = self._swf.list_closed_workflow_executions(self.name,
**kwargs)
else:
if 'oldest_date' not in kwargs:
# Last 24 hours.
kwargs['oldest_date'] = time.time() - (3600 * 24)
executions = self._swf.list_open_workflow_executions(self.name,
**kwargs)
exe_objects = []
for exe_args in executions['executionInfos']:
for nested_key in ('execution', 'workflowType'):
nested_dict = exe_args[nested_key]
del exe_args[nested_key]
exe_args.update(nested_dict)
exe_args.update({
'aws_access_key_id': self.aws_access_key_id,
'aws_secret_access_key': self.aws_secret_access_key,
'domain': self.name,
})
exe_objects.append(WorkflowExecution(**exe_args))
return exe_objects
@wraps(Layer1.count_pending_activity_tasks)
def count_pending_activity_tasks(self, task_list):
"""CountPendingActivityTasks."""
return self._swf.count_pending_activity_tasks(self.name, task_list)
@wraps(Layer1.count_pending_decision_tasks)
def count_pending_decision_tasks(self, task_list):
"""CountPendingDecisionTasks."""
return self._swf.count_pending_decision_tasks(self.name, task_list)
class Actor(SWFBase):
task_list = None
last_tasktoken = None
domain = None
def run(self):
"""To be overloaded by subclasses."""
raise NotImplementedError()
class ActivityWorker(Actor):
"""Base class for SimpleWorkflow activity workers."""
@wraps(Layer1.respond_activity_task_canceled)
def cancel(self, task_token=None, details=None):
"""RespondActivityTaskCanceled."""
if task_token is None:
task_token = self.last_tasktoken
return self._swf.respond_activity_task_canceled(task_token, details)
@wraps(Layer1.respond_activity_task_completed)
def complete(self, task_token=None, result=None):
"""RespondActivityTaskCompleted."""
if task_token is None:
task_token = self.last_tasktoken
return self._swf.respond_activity_task_completed(task_token, result)
@wraps(Layer1.respond_activity_task_failed)
def fail(self, task_token=None, details=None, reason=None):
"""RespondActivityTaskFailed."""
if task_token is None:
task_token = self.last_tasktoken
return self._swf.respond_activity_task_failed(task_token, details,
reason)
@wraps(Layer1.record_activity_task_heartbeat)
def heartbeat(self, task_token=None, details=None):
"""RecordActivityTaskHeartbeat."""
if task_token is None:
task_token = self.last_tasktoken
return self._swf.record_activity_task_heartbeat(task_token, details)
@wraps(Layer1.poll_for_activity_task)
def poll(self, **kwargs):
"""PollForActivityTask."""
task_list = self.task_list
if 'task_list' in kwargs:
task_list = kwargs.get('task_list')
del kwargs['task_list']
task = self._swf.poll_for_activity_task(self.domain, task_list,
**kwargs)
self.last_tasktoken = task.get('taskToken')
return task
class Decider(Actor):
"""Base class for SimpleWorkflow deciders."""
@wraps(Layer1.respond_decision_task_completed)
def complete(self, task_token=None, decisions=None, **kwargs):
"""RespondDecisionTaskCompleted."""
if isinstance(decisions, Layer1Decisions):
# Extract decision list from a Layer1Decisions instance.
decisions = decisions._data
if task_token is None:
task_token = self.last_tasktoken
return self._swf.respond_decision_task_completed(task_token, decisions,
**kwargs)
@wraps(Layer1.poll_for_decision_task)
def poll(self, **kwargs):
"""PollForDecisionTask."""
task_list = self.task_list
if 'task_list' in kwargs:
task_list = kwargs.get('task_list')
del kwargs['task_list']
decision_task = self._swf.poll_for_decision_task(self.domain, task_list,
**kwargs)
self.last_tasktoken = decision_task.get('taskToken')
return decision_task
class WorkflowType(SWFBase):
"""A versioned workflow type."""
version = None
task_list = None
child_policy = 'TERMINATE'
@wraps(Layer1.describe_workflow_type)
def describe(self):
"""DescribeWorkflowType."""
return self._swf.describe_workflow_type(self.domain, self.name,
self.version)
@wraps(Layer1.register_workflow_type)
def register(self, **kwargs):
"""RegisterWorkflowType."""
args = {
'default_execution_start_to_close_timeout': '3600',
'default_task_start_to_close_timeout': '300',
'default_child_policy': 'TERMINATE',
}
args.update(kwargs)
self._swf.register_workflow_type(self.domain, self.name, self.version,
**args)
@wraps(Layer1.deprecate_workflow_type)
def deprecate(self):
"""DeprecateWorkflowType."""
self._swf.deprecate_workflow_type(self.domain, self.name, self.version)
@wraps(Layer1.start_workflow_execution)
def start(self, **kwargs):
"""StartWorkflowExecution."""
if 'workflow_id' in kwargs:
workflow_id = kwargs['workflow_id']
del kwargs['workflow_id']
else:
workflow_id = '%s-%s-%i' % (self.name, self.version, time.time())
for def_attr in ('task_list', 'child_policy'):
kwargs[def_attr] = kwargs.get(def_attr, getattr(self, def_attr))
run_id = self._swf.start_workflow_execution(self.domain, workflow_id,
self.name, self.version, **kwargs)['runId']
return WorkflowExecution(name=self.name, version=self.version,
runId=run_id, domain=self.domain, workflowId=workflow_id,
aws_access_key_id=self.aws_access_key_id,
aws_secret_access_key=self.aws_secret_access_key)
class WorkflowExecution(SWFBase):
"""An instance of a workflow."""
workflowId = None
runId = None
@wraps(Layer1.signal_workflow_execution)
def signal(self, signame, **kwargs):
"""SignalWorkflowExecution."""
self._swf.signal_workflow_execution(self.domain, signame,
self.workflowId, **kwargs)
@wraps(Layer1.terminate_workflow_execution)
def terminate(self, **kwargs):
"""TerminateWorkflowExecution (p. 103)."""
return self._swf.terminate_workflow_execution(self.domain,
self.workflowId, **kwargs)
@wraps(Layer1.get_workflow_execution_history)
def history(self, **kwargs):
"""GetWorkflowExecutionHistory."""
return self._swf.get_workflow_execution_history(self.domain, self.runId,
self.workflowId, **kwargs)['events']
@wraps(Layer1.describe_workflow_execution)
def describe(self):
"""DescribeWorkflowExecution."""
return self._swf.describe_workflow_execution(self.domain, self.runId,
self.workflowId)
@wraps(Layer1.request_cancel_workflow_execution)
def request_cancel(self):
"""RequestCancelWorkflowExecution."""
return self._swf.request_cancel_workflow_execution(self.domain,
self.workflowId, self.runId)
class ActivityType(SWFBase):
"""A versioned activity type."""
version = None
@wraps(Layer1.deprecate_activity_type)
def deprecate(self):
"""DeprecateActivityType."""
return self._swf.deprecate_activity_type(self.domain, self.name,
self.version)
@wraps(Layer1.describe_activity_type)
def describe(self):
"""DescribeActivityType."""
return self._swf.describe_activity_type(self.domain, self.name,
self.version)
@wraps(Layer1.register_activity_type)
def register(self, **kwargs):
"""RegisterActivityType."""
args = {
'default_task_heartbeat_timeout': '600',
'default_task_schedule_to_close_timeout': '3900',
'default_task_schedule_to_start_timeout': '300',
'default_task_start_to_close_timeout': '3600',
}
args.update(kwargs)
self._swf.register_activity_type(self.domain, self.name, self.version,
**args)
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