AWS.SWF
Amazon Simple Workflow Service
The Amazon Simple Workflow Service (Amazon SWF) makes it easy to build applications that use Amazon's cloud to coordinate work across distributed components. In Amazon SWF, a task represents a logical unit of work that is performed by a component of your workflow. Coordinating tasks in a workflow involves managing intertask dependencies, scheduling, and concurrency in accordance with the logical flow of the application.
Amazon SWF gives you full control over implementing tasks and coordinating them without worrying about underlying complexities such as tracking their progress and maintaining their state.
This documentation serves as reference only. For a broader overview of the Amazon SWF programming model, see the Amazon SWF Developer Guide.
Summary↑
count_closed_workflow_executions(client, input, options \\ []) | Returns the number of closed workflow executions within the given domain that meet the specified filtering criteria |
count_open_workflow_executions(client, input, options \\ []) | Returns the number of open workflow executions within the given domain that meet the specified filtering criteria |
count_pending_activity_tasks(client, input, options \\ []) | 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 |
count_pending_decision_tasks(client, input, options \\ []) | 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 |
deprecate_activity_type(client, input, options \\ []) | 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 |
deprecate_domain(client, input, options \\ []) | 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 |
deprecate_workflow_type(client, input, options \\ []) | 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 |
describe_activity_type(client, input, options \\ []) | Returns information about the specified activity type. This includes configuration settings provided when the type was registered and other general information about the type |
describe_domain(client, input, options \\ []) | Returns information about the specified domain, including description and status |
describe_workflow_execution(client, input, options \\ []) | Returns information about the specified workflow execution including its type and some statistics |
describe_workflow_type(client, input, options \\ []) | 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 |
get_workflow_execution_history(client, input, options \\ []) | 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 |
list_activity_types(client, input, options \\ []) | 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 |
list_closed_workflow_executions(client, input, options \\ []) | Returns a list of closed workflow executions in the specified domain that meet the filtering criteria. The results may be split into multiple pages. To retrieve subsequent pages, make the call again using the nextPageToken returned by the initial call |
list_domains(client, input, options \\ []) | 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 |
list_open_workflow_executions(client, input, options \\ []) | Returns a list of open workflow executions in the specified domain that meet the filtering criteria. The results may be split into multiple pages. To retrieve subsequent pages, make the call again using the nextPageToken returned by the initial call |
list_workflow_types(client, input, options \\ []) | 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 |
poll_for_activity_task(client, input, options \\ []) | Used by workers to get an |
poll_for_decision_task(client, input, options \\ []) | Used by deciders to get a |
record_activity_task_heartbeat(client, input, options \\ []) | Used by activity workers to report to the service that the |
register_activity_type(client, input, options \\ []) | Registers a new activity type along with its configuration settings in the specified domain |
register_domain(client, input, options \\ []) | Registers a new domain |
register_workflow_type(client, input, options \\ []) | Registers a new workflow type and its configuration settings in the specified domain |
request_cancel_workflow_execution(client, input, options \\ []) | Records a |
respond_activity_task_canceled(client, input, options \\ []) | Used by workers to tell the service that the |
respond_activity_task_completed(client, input, options \\ []) | Used by workers to tell the service that the |
respond_activity_task_failed(client, input, options \\ []) | Used by workers to tell the service that the |
respond_decision_task_completed(client, input, options \\ []) | Used by deciders to tell the service that the |
signal_workflow_execution(client, input, options \\ []) | Records a |
start_workflow_execution(client, input, options \\ []) | Starts an execution of the workflow type in the specified domain using the provided |
terminate_workflow_execution(client, input, options \\ []) | Records a |
Functions
Returns the number of closed workflow executions within the given domain that meet the specified filtering criteria.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
tagFilter.tag
: String constraint. The key isswf:tagFilter.tag
. -
typeFilter.name
: String constraint. The key isswf:typeFilter.name
. -
typeFilter.version
: String constraint. The key isswf:typeFilter.version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Returns the number of open workflow executions within the given domain that meet the specified filtering criteria.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
tagFilter.tag
: String constraint. The key isswf:tagFilter.tag
. -
typeFilter.name
: String constraint. The key isswf:typeFilter.name
. -
typeFilter.version
: String constraint. The key isswf:typeFilter.version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the
taskList.name
parameter by using a Condition element with theswf:taskList.name
key to allow the action to access only certain task lists.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the
taskList.name
parameter by using a Condition element with theswf:taskList.name
key to allow the action to access only certain task lists.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
activityType.name
: String constraint. The key isswf:activityType.name
. -
activityType.version
: String constraint. The key isswf:activityType.version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
workflowType.name
: String constraint. The key isswf:workflowType.name
. -
workflowType.version
: String constraint. The key isswf:workflowType.version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Returns information about the specified activity type. This includes configuration settings provided when the type was registered and other general information about the type.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
activityType.name
: String constraint. The key isswf:activityType.name
. -
activityType.version
: String constraint. The key isswf:activityType.version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Returns information about the specified domain, including description and status.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Returns information about the specified workflow execution including its type and some statistics.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
workflowType.name
: String constraint. The key isswf:workflowType.name
. -
workflowType.version
: String constraint. The key isswf:workflowType.version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Returns a list of closed workflow executions in the specified domain that meet the filtering criteria. The results may be split into multiple pages. To retrieve subsequent pages, make the call again using the nextPageToken returned by the initial call.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
tagFilter.tag
: String constraint. The key isswf:tagFilter.tag
. -
typeFilter.name
: String constraint. The key isswf:typeFilter.name
. -
typeFilter.version
: String constraint. The key isswf:typeFilter.version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. The element must be set toarn:aws:swf::AccountID:domain/*
, where AccountID is the account ID, with no dashes. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Returns a list of open workflow executions in the specified domain that meet the filtering criteria. The results may be split into multiple pages. To retrieve subsequent pages, make the call again using the nextPageToken returned by the initial call.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
tagFilter.tag
: String constraint. The key isswf:tagFilter.tag
. -
typeFilter.name
: String constraint. The key isswf:typeFilter.name
. -
typeFilter.version
: String constraint. The key isswf:typeFilter.version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the
taskList.name
parameter by using a Condition element with theswf:taskList.name
key to allow the action to access only certain task lists.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
This action initiates a long poll, where the service holds the HTTP connection open and responds as soon a task becomes available. If no decision task is available in the specified task list before the timeout of 60 seconds expires, an empty result is returned. An empty result, in this context, means that a DecisionTask is returned, but that the value of taskToken is an empty string.
PollForDecisionTask
using the nextPageToken
returned by the initial call. Note that you do not call GetWorkflowExecutionHistory
with this nextPageToken
. Instead, call PollForDecisionTask
again.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the
taskList.name
parameter by using a Condition element with theswf:taskList.name
key to allow the action to access only certain task lists.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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
.
This action resets the taskHeartbeatTimeout
clock. The taskHeartbeatTimeout
is specified in RegisterActivityType
.
This action does not in itself create an event in the workflow execution history. However, if the task times out, the workflow execution history will contain a ActivityTaskTimedOut
event that contains the information from the last heartbeat generated by the activity worker.
taskStartToCloseTimeout
of an activity type is the maximum duration of an activity task, regardless of the number of RecordActivityTaskHeartbeat
requests received. The taskStartToCloseTimeout
is also specified in RegisterActivityType
.
cancelRequested
flag returns true
, a cancellation is being attempted. If the worker can cancel the activity, it should respond with RespondActivityTaskCanceled
. Otherwise, it should ignore the cancellation request.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Registers a new activity type along with its configuration settings in the specified domain.
TypeAlreadyExists
fault is returned if the type already exists in the domain. You cannot change any configuration settings of the type after its registration, and it must be registered as a new version.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
defaultTaskList.name
: String constraint. The key isswf:defaultTaskList.name
. -
name
: String constraint. The key isswf:name
. -
version
: String constraint. The key isswf:version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Registers a new domain.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
- You cannot use an IAM policy to control domain access for this action. The name of the domain being registered is available as the resource of this action.
-
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Registers a new workflow type and its configuration settings in the specified domain.
The retention period for the workflow history is set by the RegisterDomain
action.
TypeAlreadyExists
fault is returned. You cannot change the configuration settings of a workflow type once it is registered and it must be registered as a new version.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
defaultTaskList.name
: String constraint. The key isswf:defaultTaskList.name
. -
name
: String constraint. The key isswf:name
. -
version
: String constraint. The key isswf:version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
WorkflowExecutionCancelRequested
event is recorded in the history of the current open workflow execution with the specified workflowId in the domain.
TerminateWorkflowExecution
when possible.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
These details
(if provided) appear in the ActivityTaskCanceled
event added to the workflow history.
canceled
flag of a RecordActivityTaskHeartbeat
request returns true
and if the activity can be safely undone or abandoned.
A task is considered open from the time that it is scheduled until it is closed. Therefore a task is reported as open while a worker is processing it. A task is closed after it has been specified in a call to RespondActivityTaskCompleted
, RespondActivityTaskCanceled, RespondActivityTaskFailed
, or the task has timed out.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Used by workers to tell the service that the ActivityTask
identified by the taskToken
completed successfully with a result
(if provided). The result
appears in the ActivityTaskCompleted
event in the workflow history.
RespondActivityTaskFailed
instead. If the worker finds that the task is canceled through the canceled
flag returned by RecordActivityTaskHeartbeat
, it should cancel the task, clean up and then call RespondActivityTaskCanceled
.
A task is considered open from the time that it is scheduled until it is closed. Therefore a task is reported as open while a worker is processing it. A task is closed after it has been specified in a call to RespondActivityTaskCompleted, RespondActivityTaskCanceled
, RespondActivityTaskFailed
, or the task has timed out.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Used by workers to tell the service that the ActivityTask
identified by the taskToken
has failed with reason
(if specified). The reason
and details
appear in the ActivityTaskFailed
event added to the workflow history.
A task is considered open from the time that it is scheduled until it is closed. Therefore a task is reported as open while a worker is processing it. A task is closed after it has been specified in a call to RespondActivityTaskCompleted
, RespondActivityTaskCanceled
, RespondActivityTaskFailed, or the task has timed out.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
A DecisionTaskCompleted
event is added to the workflow history. The executionContext
specified is attached to the event in the workflow execution history.
Access Control
If an IAM policy grants permission to use RespondDecisionTaskCompleted
, it can express permissions for the list of decisions in the decisions
parameter. Each of the decisions has one or more parameters, much like a regular API call. To allow for policies to be as readable as possible, you can express permissions on decisions as if they were actual API calls, including applying conditions to some parameters. For more information, see Using IAM to Manage Access to Amazon SWF Workflows.
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).
WorkflowExecutionSignaled
event is recorded in the history of the current open workflow with the matching workflowId in the domain.
UnknownResource
.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Starts an execution of the workflow type in the specified domain using the provided workflowId
and input data.
This action returns the newly started workflow execution.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. -
Constrain the following parameters by using a
Condition
element with the appropriate keys.-
tagList.member.0
: The key isswf:tagList.member.0
. -
tagList.member.1
: The key isswf:tagList.member.1
. -
tagList.member.2
: The key isswf:tagList.member.2
. -
tagList.member.3
: The key isswf:tagList.member.3
. -
tagList.member.4
: The key isswf:tagList.member.4
. -
taskList
: String constraint. The key isswf:taskList.name
. -
workflowType.name
: String constraint. The key isswf:workflowType.name
. -
workflowType.version
: String constraint. The key isswf:workflowType.version
.
-
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
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.
WorkflowExecutionTerminated
event is recorded in the history of the current open workflow with the matching workflowId in the domain.
RequestCancelWorkflowExecution
action instead because it allows the workflow to gracefully close while TerminateWorkflowExecution
does not.
Access Control
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
-
Use a
Resource
element with the domain name to limit the action to only specified domains. -
Use an
Action
element to allow or deny permission to call this action. - You cannot use an IAM policy to constrain this action's parameters.
If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.