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/ swf / layer1.py
# Copyright (c) 2012 Mitch Garnaat http://garnaat.org/
# Copyright (c) 2012 Amazon.com, Inc. or its affiliates.
# All Rights Reserved
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish, dis-
# tribute, sublicense, and/or sell copies of the Software, and to permit
# persons to whom the Software is furnished to do so, subject to the fol-
# lowing conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#
import time
import boto
from boto.connection import AWSAuthConnection
from boto.provider import Provider
from boto.exception import SWFResponseError
from boto.swf import exceptions as swf_exceptions
from boto.compat import json
#
# To get full debug output, uncomment the following line and set the
# value of Debug to be 2
#
#boto.set_stream_logger('swf')
Debug = 0
class Layer1(AWSAuthConnection):
"""
Low-level interface to Simple WorkFlow Service.
"""
DefaultRegionName = 'us-east-1'
"""The default region name for Simple Workflow."""
ServiceName = 'com.amazonaws.swf.service.model.SimpleWorkflowService'
"""The name of the Service"""
# In some cases, the fault response __type value is mapped to
# an exception class more specific than SWFResponseError.
_fault_excp = {
'com.amazonaws.swf.base.model#DomainAlreadyExistsFault':
swf_exceptions.SWFDomainAlreadyExistsError,
'com.amazonaws.swf.base.model#LimitExceededFault':
swf_exceptions.SWFLimitExceededError,
'com.amazonaws.swf.base.model#OperationNotPermittedFault':
swf_exceptions.SWFOperationNotPermittedError,
'com.amazonaws.swf.base.model#TypeAlreadyExistsFault':
swf_exceptions.SWFTypeAlreadyExistsError,
'com.amazonaws.swf.base.model#WorkflowExecutionAlreadyStartedFault':
swf_exceptions.SWFWorkflowExecutionAlreadyStartedError,
}
ResponseError = SWFResponseError
def __init__(self, aws_access_key_id=None, aws_secret_access_key=None,
is_secure=True, port=None, proxy=None, proxy_port=None,
debug=0, session_token=None, region=None, profile_name=None):
if not region:
region_name = boto.config.get('SWF', 'region',
self.DefaultRegionName)
for reg in boto.swf.regions():
if reg.name == region_name:
region = reg
break
self.region = region
super(Layer1, self).__init__(self.region.endpoint,
aws_access_key_id, aws_secret_access_key,
is_secure, port, proxy, proxy_port,
debug, session_token, profile_name=profile_name)
def _required_auth_capability(self):
return ['hmac-v4']
@classmethod
def _normalize_request_dict(cls, data):
"""
This class method recurses through request data dictionary and removes
any default values.
:type data: dict
:param data: Specifies request parameters with default values to be removed.
"""
for item in list(data.keys()):
if isinstance(data[item], dict):
cls._normalize_request_dict(data[item])
if data[item] in (None, {}):
del data[item]
def json_request(self, action, data, object_hook=None):
"""
This method wraps around make_request() to normalize and serialize the
dictionary with request parameters.
:type action: string
:param action: Specifies an SWF action.
:type data: dict
:param data: Specifies request parameters associated with the action.
"""
self._normalize_request_dict(data)
json_input = json.dumps(data)
return self.make_request(action, json_input, object_hook)
def make_request(self, action, body='', object_hook=None):
"""
:raises: ``SWFResponseError`` if response status is not 200.
"""
headers = {'X-Amz-Target': '%s.%s' % (self.ServiceName, action),
'Host': self.region.endpoint,
'Content-Type': 'application/json; charset=UTF-8',
'Content-Encoding': 'amz-1.0',
'Content-Length': str(len(body))}
http_request = self.build_base_http_request('POST', '/', '/',
{}, headers, body, None)
response = self._mexe(http_request, sender=None,
override_num_retries=10)
response_body = response.read().decode('utf-8')
boto.log.debug(response_body)
if response.status == 200:
if response_body:
return json.loads(response_body, object_hook=object_hook)
else:
return None
else:
json_body = json.loads(response_body)
fault_name = json_body.get('__type', None)
# Certain faults get mapped to more specific exception classes.
excp_cls = self._fault_excp.get(fault_name, self.ResponseError)
raise excp_cls(response.status, response.reason, body=json_body)
# Actions related to Activities
def poll_for_activity_task(self, domain, task_list, identity=None):
"""
Used by workers to get an ActivityTask from the specified
activity taskList. This initiates a long poll, where the
service holds the HTTP connection open and responds as soon as
a task becomes available. The maximum time the service holds
on to the request before responding is 60 seconds. If no task
is available within 60 seconds, the poll will return an empty
result. An empty result, in this context, means that an
ActivityTask is returned, but that the value of taskToken is
an empty string. If a task is returned, the worker should use
its type to identify and process it correctly.
:type domain: string
:param domain: The name of the domain that contains the task
lists being polled.
:type task_list: string
:param task_list: Specifies the task list to poll for activity tasks.
:type identity: string
:param identity: Identity of the worker making the request, which
is recorded in the ActivityTaskStarted event in the workflow
history. This enables diagnostic tracing when problems arise.
The form of this identity is user defined.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('PollForActivityTask', {
'domain': domain,
'taskList': {'name': task_list},
'identity': identity,
})
def respond_activity_task_completed(self, task_token, result=None):
"""
Used by workers to tell the service that the ActivityTask
identified by the taskToken completed successfully with a
result (if provided).
:type task_token: string
:param task_token: The taskToken of the ActivityTask.
:type result: string
:param result: The result of the activity task. It is a free
form string that is implementation specific.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('RespondActivityTaskCompleted', {
'taskToken': task_token,
'result': result,
})
def respond_activity_task_failed(self, task_token,
details=None, reason=None):
"""
Used by workers to tell the service that the ActivityTask
identified by the taskToken has failed with reason (if
specified).
:type task_token: string
:param task_token: The taskToken of the ActivityTask.
:type details: string
:param details: Optional detailed information about the failure.
:type reason: string
:param reason: Description of the error that may assist in diagnostics.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('RespondActivityTaskFailed', {
'taskToken': task_token,
'details': details,
'reason': reason,
})
def respond_activity_task_canceled(self, task_token, details=None):
"""
Used by workers to tell the service that the ActivityTask
identified by the taskToken was successfully
canceled. Additional details can be optionally provided using
the details argument.
:type task_token: string
:param task_token: The taskToken of the ActivityTask.
:type details: string
:param details: Optional detailed information about the failure.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('RespondActivityTaskCanceled', {
'taskToken': task_token,
'details': details,
})
def record_activity_task_heartbeat(self, task_token, details=None):
"""
Used by activity workers to report to the service that the
ActivityTask represented by the specified taskToken is still
making progress. The worker can also (optionally) specify
details of the progress, for example percent complete, using
the details parameter. This action can also be used by the
worker as a mechanism to check if cancellation is being
requested for the activity task. If a cancellation is being
attempted for the specified task, then the boolean
cancelRequested flag returned by the service is set to true.
:type task_token: string
:param task_token: The taskToken of the ActivityTask.
:type details: string
:param details: If specified, contains details about the
progress of the task.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('RecordActivityTaskHeartbeat', {
'taskToken': task_token,
'details': details,
})
# Actions related to Deciders
def poll_for_decision_task(self, domain, task_list, identity=None,
maximum_page_size=None,
next_page_token=None,
reverse_order=None):
"""
Used by deciders to get a DecisionTask from the specified
decision taskList. A decision task may be returned for any
open workflow execution that is using the specified task
list. The task includes a paginated view of the history of the
workflow execution. The decider should use the workflow type
and the history to determine how to properly handle the task.
:type domain: string
:param domain: The name of the domain containing the task
lists to poll.
:type task_list: string
:param task_list: Specifies the task list to poll for decision tasks.
:type identity: string
:param identity: Identity of the decider making the request,
which is recorded in the DecisionTaskStarted event in the
workflow history. This enables diagnostic tracing when
problems arise. The form of this identity is user defined.
:type maximum_page_size: integer :param maximum_page_size: The
maximum number of history events returned in each page. The
default is 100, but the caller can override this value to a
page size smaller than the default. You cannot specify a page
size greater than 100.
:type next_page_token: string
:param next_page_token: If on a previous call to this method a
NextPageToken was returned, the results are being paginated.
To get the next page of results, repeat the call with the
returned token and all other arguments unchanged.
:type reverse_order: boolean
:param reverse_order: When set to true, returns the events in
reverse order. By default the results are returned in
ascending order of the eventTimestamp of the events.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('PollForDecisionTask', {
'domain': domain,
'taskList': {'name': task_list},
'identity': identity,
'maximumPageSize': maximum_page_size,
'nextPageToken': next_page_token,
'reverseOrder': reverse_order,
})
def respond_decision_task_completed(self, task_token,
decisions=None,
execution_context=None):
"""
Used by deciders to tell the service that the DecisionTask
identified by the taskToken has successfully completed.
The decisions argument specifies the list of decisions
made while processing the task.
:type task_token: string
:param task_token: The taskToken of the ActivityTask.
:type decisions: list
:param decisions: The list of decisions (possibly empty) made by
the decider while processing this decision task. See the docs
for the Decision structure for details.
:type execution_context: string
:param execution_context: User defined context to add to
workflow execution.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('RespondDecisionTaskCompleted', {
'taskToken': task_token,
'decisions': decisions,
'executionContext': execution_context,
})
def request_cancel_workflow_execution(self, domain, workflow_id,
run_id=None):
"""
Records a WorkflowExecutionCancelRequested event in the
currently running workflow execution identified by the given
domain, workflowId, and runId. This logically requests the
cancellation of the workflow execution as a whole. It is up to
the decider to take appropriate actions when it receives an
execution history with this event.
:type domain: string
:param domain: The name of the domain containing the workflow
execution to cancel.
:type run_id: string
:param run_id: The runId of the workflow execution to cancel.
:type workflow_id: string
:param workflow_id: The workflowId of the workflow execution
to cancel.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('RequestCancelWorkflowExecution', {
'domain': domain,
'workflowId': workflow_id,
'runId': run_id,
})
def start_workflow_execution(self, domain, workflow_id,
workflow_name, workflow_version,
task_list=None, child_policy=None,
execution_start_to_close_timeout=None,
input=None, tag_list=None,
task_start_to_close_timeout=None):
"""
Starts an execution of the workflow type in the specified
domain using the provided workflowId and input data.
:type domain: string
:param domain: The name of the domain in which the workflow
execution is created.
:type workflow_id: string
:param workflow_id: The user defined identifier associated with
the workflow execution. You can use this to associate a
custom identifier with the workflow execution. You may
specify the same identifier if a workflow execution is
logically a restart of a previous execution. You cannot
have two open workflow executions with the same workflowId
at the same time.
:type workflow_name: string
:param workflow_name: The name of the workflow type.
:type workflow_version: string
:param workflow_version: The version of the workflow type.
:type task_list: string
:param task_list: The task list to use for the decision tasks
generated for this workflow execution. This overrides the
defaultTaskList specified when registering the workflow type.
:type child_policy: string
:param child_policy: If set, specifies the policy to use for the
child workflow executions of this workflow execution if it
is terminated, by calling the TerminateWorkflowExecution
action explicitly or due to an expired timeout. This policy
overrides the default child policy specified when registering
the workflow type using RegisterWorkflowType. The supported
child policies are:
* TERMINATE: the child executions will be terminated.
* REQUEST_CANCEL: a request to cancel will be attempted
for each child execution by recording a
WorkflowExecutionCancelRequested event in its history.
It is up to the decider to take appropriate actions
when it receives an execution history with this event.
* ABANDON: no action will be taken. The child executions
will continue to run.
:type execution_start_to_close_timeout: string
:param execution_start_to_close_timeout: The total duration for
this workflow execution. This overrides the
defaultExecutionStartToCloseTimeout specified when
registering the workflow type.
:type input: string
:param input: The input for the workflow
execution. This is a free form string which should be
meaningful to the workflow you are starting. This input is
made available to the new workflow execution in the
WorkflowExecutionStarted history event.
:type tag_list: list :param tag_list: The list of tags to
associate with the workflow execution. You can specify a
maximum of 5 tags. You can list workflow executions with a
specific tag by calling list_open_workflow_executions or
list_closed_workflow_executions and specifying a TagFilter.
:type task_start_to_close_timeout: string :param
task_start_to_close_timeout: Specifies the maximum duration of
decision tasks for this workflow execution. This parameter
overrides the defaultTaskStartToCloseTimout specified when
registering the workflow type using register_workflow_type.
:raises: UnknownResourceFault, TypeDeprecatedFault,
SWFWorkflowExecutionAlreadyStartedError, SWFLimitExceededError,
SWFOperationNotPermittedError, DefaultUndefinedFault
"""
return self.json_request('StartWorkflowExecution', {
'domain': domain,
'workflowId': workflow_id,
'workflowType': {'name': workflow_name,
'version': workflow_version},
'taskList': {'name': task_list},
'childPolicy': child_policy,
'executionStartToCloseTimeout': execution_start_to_close_timeout,
'input': input,
'tagList': tag_list,
'taskStartToCloseTimeout': task_start_to_close_timeout,
})
def signal_workflow_execution(self, domain, signal_name, workflow_id,
input=None, run_id=None):
"""
Records a WorkflowExecutionSignaled event in the workflow
execution history and creates a decision task for the workflow
execution identified by the given domain, workflowId and
runId. The event is recorded with the specified user defined
signalName and input (if provided).
:type domain: string
:param domain: The name of the domain containing the workflow
execution to signal.
:type signal_name: string
:param signal_name: The name of the signal. This name must be
meaningful to the target workflow.
:type workflow_id: string
:param workflow_id: The workflowId of the workflow execution
to signal.
:type input: string
:param input: Data to attach to the WorkflowExecutionSignaled
event in the target workflow execution's history.
:type run_id: string
:param run_id: The runId of the workflow execution to signal.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('SignalWorkflowExecution', {
'domain': domain,
'signalName': signal_name,
'workflowId': workflow_id,
'input': input,
'runId': run_id,
})
def terminate_workflow_execution(self, domain, workflow_id,
child_policy=None, details=None,
reason=None, run_id=None):
"""
Records a WorkflowExecutionTerminated event and forces closure
of the workflow execution identified by the given domain,
runId, and workflowId. The child policy, registered with the
workflow type or specified when starting this execution, is
applied to any open child workflow executions of this workflow
execution.
:type domain: string
:param domain: The domain of the workflow execution to terminate.
:type workflow_id: string
:param workflow_id: The workflowId of the workflow execution
to terminate.
:type child_policy: string
:param child_policy: If set, specifies the policy to use for
the child workflow executions of the workflow execution being
terminated. This policy overrides the child policy specified
for the workflow execution at registration time or when
starting the execution. The supported child policies are:
* TERMINATE: the child executions will be terminated.
* REQUEST_CANCEL: a request to cancel will be attempted
for each child execution by recording a
WorkflowExecutionCancelRequested event in its
history. It is up to the decider to take appropriate
actions when it receives an execution history with this
event.
* ABANDON: no action will be taken. The child executions
will continue to run.
:type details: string
:param details: Optional details for terminating the
workflow execution.
:type reason: string
:param reason: An optional descriptive reason for terminating
the workflow execution.
:type run_id: string
:param run_id: The runId of the workflow execution to terminate.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('TerminateWorkflowExecution', {
'domain': domain,
'workflowId': workflow_id,
'childPolicy': child_policy,
'details': details,
'reason': reason,
'runId': run_id,
})
# Actions related to Administration
## Activity Management
def register_activity_type(self, domain, name, version, task_list=None,
default_task_heartbeat_timeout=None,
default_task_schedule_to_close_timeout=None,
default_task_schedule_to_start_timeout=None,
default_task_start_to_close_timeout=None,
description=None):
"""
Registers a new activity type along with its configuration
settings in the specified domain.
:type domain: string
:param domain: The name of the domain in which this activity is
to be registered.
:type name: string
:param name: The name of the activity type within the domain.
:type version: string
:param version: The version of the activity type.
:type task_list: string
:param task_list: If set, specifies the default task list to
use for scheduling tasks of this activity type. This default
task list is used if a task list is not provided when a task
is scheduled through the schedule_activity_task Decision.
:type default_task_heartbeat_timeout: string
:param default_task_heartbeat_timeout: If set, specifies the
default maximum time before which a worker processing a task
of this type must report progress by calling
RecordActivityTaskHeartbeat. If the timeout is exceeded, the
activity task is automatically timed out. This default can be
overridden when scheduling an activity task using the
ScheduleActivityTask Decision. If the activity worker
subsequently attempts to record a heartbeat or returns a
result, the activity worker receives an UnknownResource
fault. In this case, Amazon SWF no longer considers the
activity task to be valid; the activity worker should clean up
the activity task.no docs
:type default_task_schedule_to_close_timeout: string
:param default_task_schedule_to_close_timeout: If set,
specifies the default maximum duration for a task of this
activity type. This default can be overridden when scheduling
an activity task using the ScheduleActivityTask Decision.no
docs
:type default_task_schedule_to_start_timeout: string
:param default_task_schedule_to_start_timeout: If set,
specifies the default maximum duration that a task of this
activity type can wait before being assigned to a worker. This
default can be overridden when scheduling an activity task
using the ScheduleActivityTask Decision.
:type default_task_start_to_close_timeout: string
:param default_task_start_to_close_timeout: If set, specifies
the default maximum duration that a worker can take to process
tasks of this activity type. This default can be overridden
when scheduling an activity task using the
ScheduleActivityTask Decision.
:type description: string
:param description: A textual description of the activity type.
:raises: SWFTypeAlreadyExistsError, SWFLimitExceededError,
UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('RegisterActivityType', {
'domain': domain,
'name': name,
'version': version,
'defaultTaskList': {'name': task_list},
'defaultTaskHeartbeatTimeout': default_task_heartbeat_timeout,
'defaultTaskScheduleToCloseTimeout': default_task_schedule_to_close_timeout,
'defaultTaskScheduleToStartTimeout': default_task_schedule_to_start_timeout,
'defaultTaskStartToCloseTimeout': default_task_start_to_close_timeout,
'description': description,
})
def deprecate_activity_type(self, domain, activity_name, activity_version):
"""
Deprecates the specified activity type. After an activity
type has been deprecated, you cannot create new tasks of
that activity type. Tasks of this type that were scheduled
before the type was deprecated will continue to run.
:type domain: string
:param domain: The name of the domain in which the activity
type is registered.
:type activity_name: string
:param activity_name: The name of this activity.
:type activity_version: string
:param activity_version: The version of this activity.
:raises: UnknownResourceFault, TypeDeprecatedFault,
SWFOperationNotPermittedError
"""
return self.json_request('DeprecateActivityType', {
'domain': domain,
'activityType': {'name': activity_name,
'version': activity_version}
})
## Workflow Management
def register_workflow_type(self, domain, name, version,
task_list=None,
default_child_policy=None,
default_execution_start_to_close_timeout=None,
default_task_start_to_close_timeout=None,
description=None):
"""
Registers a new workflow type and its configuration settings
in the specified domain.
:type domain: string
:param domain: The name of the domain in which to register
the workflow type.
:type name: string
:param name: The name of the workflow type.
:type version: string
:param version: The version of the workflow type.
:type task_list: list of name, version of tasks
:param task_list: If set, specifies the default task list to use
for scheduling decision tasks for executions of this workflow
type. This default is used only if a task list is not provided
when starting the execution through the StartWorkflowExecution
Action or StartChildWorkflowExecution Decision.
:type default_child_policy: string
:param default_child_policy: If set, specifies the default
policy to use for the child workflow executions when a
workflow execution of this type is terminated, by calling the
TerminateWorkflowExecution action explicitly or due to an
expired timeout. This default can be overridden when starting
a workflow execution using the StartWorkflowExecution action
or the StartChildWorkflowExecution Decision. The supported
child policies are:
* TERMINATE: the child executions will be terminated.
* REQUEST_CANCEL: a request to cancel will be attempted
for each child execution by recording a
WorkflowExecutionCancelRequested event in its
history. It is up to the decider to take appropriate
actions when it receives an execution history with this
event.
* ABANDON: no action will be taken. The child executions
will continue to run.no docs
:type default_execution_start_to_close_timeout: string
:param default_execution_start_to_close_timeout: If set,
specifies the default maximum duration for executions of this
workflow type. You can override this default when starting an
execution through the StartWorkflowExecution Action or
StartChildWorkflowExecution Decision.
:type default_task_start_to_close_timeout: string
:param default_task_start_to_close_timeout: If set, specifies
the default maximum duration of decision tasks for this
workflow type. This default can be overridden when starting a
workflow execution using the StartWorkflowExecution action or
the StartChildWorkflowExecution Decision.
:type description: string
:param description: Textual description of the workflow type.
:raises: SWFTypeAlreadyExistsError, SWFLimitExceededError,
UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('RegisterWorkflowType', {
'domain': domain,
'name': name,
'version': version,
'defaultTaskList': {'name': task_list},
'defaultChildPolicy': default_child_policy,
'defaultExecutionStartToCloseTimeout': default_execution_start_to_close_timeout,
'defaultTaskStartToCloseTimeout': default_task_start_to_close_timeout,
'description': description,
})
def deprecate_workflow_type(self, domain, workflow_name, workflow_version):
"""
Deprecates the specified workflow type. After a workflow type
has been deprecated, you cannot create new executions of that
type. Executions that were started before the type was
deprecated will continue to run. A deprecated workflow type
may still be used when calling visibility actions.
:type domain: string
:param domain: The name of the domain in which the workflow
type is registered.
:type workflow_name: string
:param workflow_name: The name of the workflow type.
:type workflow_version: string
:param workflow_version: The version of the workflow type.
:raises: UnknownResourceFault, TypeDeprecatedFault,
SWFOperationNotPermittedError
"""
return self.json_request('DeprecateWorkflowType', {
'domain': domain,
'workflowType': {'name': workflow_name,
'version': workflow_version},
})
## Domain Management
def register_domain(self, name,
workflow_execution_retention_period_in_days,
description=None):
"""
Registers a new domain.
:type name: string
:param name: Name of the domain to register. The name must be unique.
:type workflow_execution_retention_period_in_days: string
:param workflow_execution_retention_period_in_days: Specifies
the duration *in days* for which the record (including the
history) of workflow executions in this domain should be kept
by the service. After the retention period, the workflow
execution will not be available in the results of visibility
calls. If a duration of NONE is specified, the records for
workflow executions in this domain are not retained at all.
:type description: string
:param description: Textual description of the domain.
:raises: SWFDomainAlreadyExistsError, SWFLimitExceededError,
SWFOperationNotPermittedError
"""
return self.json_request('RegisterDomain', {
'name': name,
'workflowExecutionRetentionPeriodInDays': workflow_execution_retention_period_in_days,
'description': description,
})
def deprecate_domain(self, name):
"""
Deprecates the specified domain. After a domain has been
deprecated it cannot be used to create new workflow executions
or register new types. However, you can still use visibility
actions on this domain. Deprecating a domain also deprecates
all activity and workflow types registered in the
domain. Executions that were started before the domain was
deprecated will continue to run.
:type name: string
:param name: The name of the domain to deprecate.
:raises: UnknownResourceFault, DomainDeprecatedFault,
SWFOperationNotPermittedError
"""
return self.json_request('DeprecateDomain', {'name': name})
# Visibility Actions
## Activity Visibility
def list_activity_types(self, domain, registration_status,
name=None,
maximum_page_size=None,
next_page_token=None, reverse_order=None):
"""
Returns information about all activities registered in the
specified domain that match the specified name and
registration status. The result includes information like
creation date, current status of the activity, etc. The
results may be split into multiple pages. To retrieve
subsequent pages, make the call again using the nextPageToken
returned by the initial call.
:type domain: string
:param domain: The name of the domain in which the activity
types have been registered.
:type registration_status: string
:param registration_status: Specifies the registration status
of the activity types to list. Valid values are:
* REGISTERED
* DEPRECATED
:type name: string
:param name: If specified, only lists the activity types that
have this name.
:type maximum_page_size: integer
:param maximum_page_size: The maximum number of results
returned in each page. The default is 100, but the caller can
override this value to a page size smaller than the
default. You cannot specify a page size greater than 100.
:type next_page_token: string
:param next_page_token: If on a previous call to this method a
NextResultToken was returned, the results have more than one
page. To get the next page of results, repeat the call with
the nextPageToken and keep all other arguments unchanged.
:type reverse_order: boolean
:param reverse_order: When set to true, returns the results in
reverse order. By default the results are returned in
ascending alphabetical order of the name of the activity
types.
:raises: SWFOperationNotPermittedError, UnknownResourceFault
"""
return self.json_request('ListActivityTypes', {
'domain': domain,
'name': name,
'registrationStatus': registration_status,
'maximumPageSize': maximum_page_size,
'nextPageToken': next_page_token,
'reverseOrder': reverse_order,
})
def describe_activity_type(self, domain, activity_name, activity_version):
"""
Returns information about the specified activity type. This
includes configuration settings provided at registration time
as well as other general information about the type.
:type domain: string
:param domain: The name of the domain in which the activity
type is registered.
:type activity_name: string
:param activity_name: The name of this activity.
:type activity_version: string
:param activity_version: The version of this activity.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('DescribeActivityType', {
'domain': domain,
'activityType': {'name': activity_name,
'version': activity_version}
})
## Workflow Visibility
def list_workflow_types(self, domain, registration_status,
maximum_page_size=None, name=None,
next_page_token=None, reverse_order=None):
"""
Returns information about workflow types in the specified
domain. The results may be split into multiple pages that can
be retrieved by making the call repeatedly.
:type domain: string
:param domain: The name of the domain in which the workflow
types have been registered.
:type registration_status: string
:param registration_status: Specifies the registration status
of the activity types to list. Valid values are:
* REGISTERED
* DEPRECATED
:type name: string
:param name: If specified, lists the workflow type with this name.
:type maximum_page_size: integer
:param maximum_page_size: The maximum number of results
returned in each page. The default is 100, but the caller can
override this value to a page size smaller than the
default. You cannot specify a page size greater than 100.
:type next_page_token: string
:param next_page_token: If on a previous call to this method a
NextPageToken was returned, the results are being
paginated. To get the next page of results, repeat the call
with the returned token and all other arguments unchanged.
:type reverse_order: boolean
:param reverse_order: When set to true, returns the results in
reverse order. By default the results are returned in
ascending alphabetical order of the name of the workflow
types.
:raises: SWFOperationNotPermittedError, UnknownResourceFault
"""
return self.json_request('ListWorkflowTypes', {
'domain': domain,
'name': name,
'registrationStatus': registration_status,
'maximumPageSize': maximum_page_size,
'nextPageToken': next_page_token,
'reverseOrder': reverse_order,
})
def describe_workflow_type(self, domain, workflow_name, workflow_version):
"""
Returns information about the specified workflow type. This
includes configuration settings specified when the type was
registered and other information such as creation date,
current status, etc.
:type domain: string
:param domain: The name of the domain in which this workflow
type is registered.
:type workflow_name: string
:param workflow_name: The name of the workflow type.
:type workflow_version: string
:param workflow_version: The version of the workflow type.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('DescribeWorkflowType', {
'domain': domain,
'workflowType': {'name': workflow_name,
'version': workflow_version}
})
## Workflow Execution Visibility
def describe_workflow_execution(self, domain, run_id, workflow_id):
"""
Returns information about the specified workflow execution
including its type and some statistics.
:type domain: string
:param domain: The name of the domain containing the
workflow execution.
:type run_id: string
:param run_id: A system generated unique identifier for the
workflow execution.
:type workflow_id: string
:param workflow_id: The user defined identifier associated
with the workflow execution.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('DescribeWorkflowExecution', {
'domain': domain,
'execution': {'runId': run_id,
'workflowId': workflow_id},
})
def get_workflow_execution_history(self, domain, run_id, workflow_id,
maximum_page_size=None,
next_page_token=None,
reverse_order=None):
"""
Returns the history of the specified workflow execution. The
results may be split into multiple pages. To retrieve
subsequent pages, make the call again using the nextPageToken
returned by the initial call.
:type domain: string
:param domain: The name of the domain containing the
workflow execution.
:type run_id: string
:param run_id: A system generated unique identifier for the
workflow execution.
:type workflow_id: string
:param workflow_id: The user defined identifier associated
with the workflow execution.
:type maximum_page_size: integer
:param maximum_page_size: Specifies the maximum number of
history events returned in one page. The next page in the
result is identified by the NextPageToken returned. By default
100 history events are returned in a page but the caller can
override this value to a page size smaller than the
default. You cannot specify a page size larger than 100.
:type next_page_token: string
:param next_page_token: If a NextPageToken is returned, the
result has more than one pages. To get the next page, repeat
the call and specify the nextPageToken with all other
arguments unchanged.
:type reverse_order: boolean
:param reverse_order: When set to true, returns the events in
reverse order. By default the results are returned in
ascending order of the eventTimeStamp of the events.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('GetWorkflowExecutionHistory', {
'domain': domain,
'execution': {'runId': run_id,
'workflowId': workflow_id},
'maximumPageSize': maximum_page_size,
'nextPageToken': next_page_token,
'reverseOrder': reverse_order,
})
def count_open_workflow_executions(self, domain, latest_date, oldest_date,
tag=None,
workflow_id=None,
workflow_name=None,
workflow_version=None):
"""
Returns the number of open workflow executions within the
given domain that meet the specified filtering criteria.
.. note:
workflow_id, workflow_name/workflow_version and tag are mutually
exclusive. You can specify at most one of these in a request.
:type domain: string
:param domain: The name of the domain containing the
workflow executions to count.
:type latest_date: timestamp
:param latest_date: Specifies the latest start or close date
and time to return.
:type oldest_date: timestamp
:param oldest_date: Specifies the oldest start or close date
and time to return.
:type workflow_name: string
:param workflow_name: Name of the workflow type to filter on.
:type workflow_version: string
:param workflow_version: Version of the workflow type to filter on.
:type tag: string
:param tag: If specified, only executions that have a tag
that matches the filter are counted.
:type workflow_id: string
:param workflow_id: If specified, only workflow executions
matching the workflow_id are counted.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('CountOpenWorkflowExecutions', {
'domain': domain,
'startTimeFilter': {'oldestDate': oldest_date,
'latestDate': latest_date},
'typeFilter': {'name': workflow_name,
'version': workflow_version},
'executionFilter': {'workflowId': workflow_id},
'tagFilter': {'tag': tag},
})
def list_open_workflow_executions(self, domain,
oldest_date,
latest_date=None,
tag=None,
workflow_id=None,
workflow_name=None,
workflow_version=None,
maximum_page_size=None,
next_page_token=None,
reverse_order=None):
"""
Returns the list of open workflow executions within the
given domain that meet the specified filtering criteria.
.. note:
workflow_id, workflow_name/workflow_version
and tag are mutually exclusive. You can specify at most
one of these in a request.
:type domain: string
:param domain: The name of the domain containing the
workflow executions to count.
:type latest_date: timestamp
:param latest_date: Specifies the latest start or close date
and time to return.
:type oldest_date: timestamp
:param oldest_date: Specifies the oldest start or close date
and time to return.
:type tag: string
:param tag: If specified, only executions that have a tag
that matches the filter are counted.
:type workflow_id: string
:param workflow_id: If specified, only workflow executions
matching the workflow_id are counted.
:type workflow_name: string
:param workflow_name: Name of the workflow type to filter on.
:type workflow_version: string
:param workflow_version: Version of the workflow type to filter on.
:type maximum_page_size: integer
:param maximum_page_size: The maximum number of results
returned in each page. The default is 100, but the caller can
override this value to a page size smaller than the
default. You cannot specify a page size greater than 100.
:type next_page_token: string
:param next_page_token: If on a previous call to this method a
NextPageToken was returned, the results are being
paginated. To get the next page of results, repeat the call
with the returned token and all other arguments unchanged.
:type reverse_order: boolean
:param reverse_order: When set to true, returns the results in
reverse order. By default the results are returned in
descending order of the start or the close time of the
executions.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('ListOpenWorkflowExecutions', {
'domain': domain,
'startTimeFilter': {'oldestDate': oldest_date,
'latestDate': latest_date},
'tagFilter': {'tag': tag},
'typeFilter': {'name': workflow_name,
'version': workflow_version},
'executionFilter': {'workflowId': workflow_id},
'maximumPageSize': maximum_page_size,
'nextPageToken': next_page_token,
'reverseOrder': reverse_order,
})
def count_closed_workflow_executions(self, domain,
start_latest_date=None,
start_oldest_date=None,
close_latest_date=None,
close_oldest_date=None,
close_status=None,
tag=None,
workflow_id=None,
workflow_name=None,
workflow_version=None):
"""
Returns the number of closed workflow executions within the
given domain that meet the specified filtering criteria.
.. note:
close_status, workflow_id, workflow_name/workflow_version
and tag are mutually exclusive. You can specify at most
one of these in a request.
.. note:
start_latest_date/start_oldest_date and
close_latest_date/close_oldest_date are mutually
exclusive. You can specify at most one of these in a request.
:type domain: string
:param domain: The name of the domain containing the
workflow executions to count.
:type start_latest_date: timestamp
:param start_latest_date: If specified, only workflow executions
that meet the start time criteria of the filter are counted.
:type start_oldest_date: timestamp
:param start_oldest_date: If specified, only workflow executions
that meet the start time criteria of the filter are counted.
:type close_latest_date: timestamp
:param close_latest_date: If specified, only workflow executions
that meet the close time criteria of the filter are counted.
:type close_oldest_date: timestamp
:param close_oldest_date: If specified, only workflow executions
that meet the close time criteria of the filter are counted.
:type close_status: string
:param close_status: The close status that must match the close status
of an execution for it to meet the criteria of this filter.
Valid values are:
* COMPLETED
* FAILED
* CANCELED
* TERMINATED
* CONTINUED_AS_NEW
* TIMED_OUT
:type tag: string
:param tag: If specified, only executions that have a tag
that matches the filter are counted.
:type workflow_id: string
:param workflow_id: If specified, only workflow executions
matching the workflow_id are counted.
:type workflow_name: string
:param workflow_name: Name of the workflow type to filter on.
:type workflow_version: string
:param workflow_version: Version of the workflow type to filter on.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('CountClosedWorkflowExecutions', {
'domain': domain,
'startTimeFilter': {'oldestDate': start_oldest_date,
'latestDate': start_latest_date},
'closeTimeFilter': {'oldestDate': close_oldest_date,
'latestDate': close_latest_date},
'closeStatusFilter': {'status': close_status},
'tagFilter': {'tag': tag},
'typeFilter': {'name': workflow_name,
'version': workflow_version},
'executionFilter': {'workflowId': workflow_id}
})
def list_closed_workflow_executions(self, domain,
start_latest_date=None,
start_oldest_date=None,
close_latest_date=None,
close_oldest_date=None,
close_status=None,
tag=None,
workflow_id=None,
workflow_name=None,
workflow_version=None,
maximum_page_size=None,
next_page_token=None,
reverse_order=None):
"""
Returns the number of closed workflow executions within the
given domain that meet the specified filtering criteria.
.. note:
close_status, workflow_id, workflow_name/workflow_version
and tag are mutually exclusive. You can specify at most
one of these in a request.
.. note:
start_latest_date/start_oldest_date and
close_latest_date/close_oldest_date are mutually
exclusive. You can specify at most one of these in a request.
:type domain: string
:param domain: The name of the domain containing the
workflow executions to count.
:type start_latest_date: timestamp
:param start_latest_date: If specified, only workflow executions
that meet the start time criteria of the filter are counted.
:type start_oldest_date: timestamp
:param start_oldest_date: If specified, only workflow executions
that meet the start time criteria of the filter are counted.
:type close_latest_date: timestamp
:param close_latest_date: If specified, only workflow executions
that meet the close time criteria of the filter are counted.
:type close_oldest_date: timestamp
:param close_oldest_date: If specified, only workflow executions
that meet the close time criteria of the filter are counted.
:type close_status: string
:param close_status: The close status that must match the close status
of an execution for it to meet the criteria of this filter.
Valid values are:
* COMPLETED
* FAILED
* CANCELED
* TERMINATED
* CONTINUED_AS_NEW
* TIMED_OUT
:type tag: string
:param tag: If specified, only executions that have a tag
that matches the filter are counted.
:type workflow_id: string
:param workflow_id: If specified, only workflow executions
matching the workflow_id are counted.
:type workflow_name: string
:param workflow_name: Name of the workflow type to filter on.
:type workflow_version: string
:param workflow_version: Version of the workflow type to filter on.
:type maximum_page_size: integer
:param maximum_page_size: The maximum number of results
returned in each page. The default is 100, but the caller can
override this value to a page size smaller than the
default. You cannot specify a page size greater than 100.
:type next_page_token: string
:param next_page_token: If on a previous call to this method a
NextPageToken was returned, the results are being
paginated. To get the next page of results, repeat the call
with the returned token and all other arguments unchanged.
:type reverse_order: boolean
:param reverse_order: When set to true, returns the results in
reverse order. By default the results are returned in
descending order of the start or the close time of the
executions.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('ListClosedWorkflowExecutions', {
'domain': domain,
'startTimeFilter': {'oldestDate': start_oldest_date,
'latestDate': start_latest_date},
'closeTimeFilter': {'oldestDate': close_oldest_date,
'latestDate': close_latest_date},
'executionFilter': {'workflowId': workflow_id},
'closeStatusFilter': {'status': close_status},
'tagFilter': {'tag': tag},
'typeFilter': {'name': workflow_name,
'version': workflow_version},
'maximumPageSize': maximum_page_size,
'nextPageToken': next_page_token,
'reverseOrder': reverse_order,
})
## Domain Visibility
def list_domains(self, registration_status,
maximum_page_size=None,
next_page_token=None, reverse_order=None):
"""
Returns the list of domains registered in the account. The
results may be split into multiple pages. To retrieve
subsequent pages, make the call again using the nextPageToken
returned by the initial call.
:type registration_status: string
:param registration_status: Specifies the registration status
of the domains to list. Valid Values:
* REGISTERED
* DEPRECATED
:type maximum_page_size: integer
:param maximum_page_size: The maximum number of results
returned in each page. The default is 100, but the caller can
override this value to a page size smaller than the
default. You cannot specify a page size greater than 100.
:type next_page_token: string
:param next_page_token: If on a previous call to this method a
NextPageToken was returned, the result has more than one
page. To get the next page of results, repeat the call with
the returned token and all other arguments unchanged.
:type reverse_order: boolean
:param reverse_order: When set to true, returns the results in
reverse order. By default the results are returned in
ascending alphabetical order of the name of the domains.
:raises: SWFOperationNotPermittedError
"""
return self.json_request('ListDomains', {
'registrationStatus': registration_status,
'maximumPageSize': maximum_page_size,
'nextPageToken': next_page_token,
'reverseOrder': reverse_order,
})
def describe_domain(self, name):
"""
Returns information about the specified domain including
description and status.
:type name: string
:param name: The name of the domain to describe.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('DescribeDomain', {'name': name})
## Task List Visibility
def count_pending_decision_tasks(self, domain, task_list):
"""
Returns the estimated number of decision tasks in the
specified task list. The count returned is an approximation
and is not guaranteed to be exact. If you specify a task list
that no decision task was ever scheduled in then 0 will be
returned.
:type domain: string
:param domain: The name of the domain that contains the task list.
:type task_list: string
:param task_list: The name of the task list.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('CountPendingDecisionTasks', {
'domain': domain,
'taskList': {'name': task_list}
})
def count_pending_activity_tasks(self, domain, task_list):
"""
Returns the estimated number of activity tasks in the
specified task list. The count returned is an approximation
and is not guaranteed to be exact. If you specify a task list
that no activity task was ever scheduled in then 0 will be
returned.
:type domain: string
:param domain: The name of the domain that contains the task list.
:type task_list: string
:param task_list: The name of the task list.
:raises: UnknownResourceFault, SWFOperationNotPermittedError
"""
return self.json_request('CountPendingActivityTasks', {
'domain': domain,
'taskList': {'name': task_list}
})