Amazon Simple Workflow Service #X Amz Target=SimpleWorkflowService.PollForDecisionTask API

openapi: 3.2.0
info:
  version: 1.0.0
  x-release: v4
  title: 'Amazon Simple Workflow Service #X Amz Target=SimpleWorkflowService.CountClosedWorkflowExecutions #X Amz Target=SimpleWorkflowService.CountClosedWorkflowExecutions #X Amz Target=SimpleWorkflowService.PollForDecisionTask #X Amz Target=SimpleWorkflowService.PollForDecisionTask API'
  description: <fullname>Amazon Simple Workflow Service</fullname> <p>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 <i>task</i> 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.</p> <p>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.</p> <p>This documentation serves as reference only. For a broader overview of the Amazon SWF programming model, see the <i> <a href="https://docs.aws.amazon.com/amazonswf/latest/developerguide/">Amazon SWF Developer Guide</a> </i>.</p>
  x-logo:
    url: https://twitter.com/awscloud/profile_image?size=original
    backgroundColor: '#FFFFFF'
  termsOfService: https://aws.amazon.com/service-terms/
  contact:
    name: Mike Ralphson
    email: mike.ralphson@gmail.com
    url: https://github.com/mermade/aws2openapi
    x-twitter: PermittedSoc
  license:
    name: Apache 2.0 License
    url: http://www.apache.org/licenses/
  x-providerName: amazonaws.com
  x-serviceName: swf
  x-origin:
  - contentType: application/json
    url: https://raw.githubusercontent.com/aws/aws-sdk-js/master/apis/swf-2012-01-25.normal.json
    converter:
      url: https://github.com/mermade/aws2openapi
    x-apisguru-driver: external
  x-apiClientRegistration:
    url: https://portal.aws.amazon.com/gp/aws/developer/registration/index.html?nc2=h_ct
  x-apisguru-categories:
  - cloud
  x-preferred: true
servers:
- url: http://swf.{region}.amazonaws.com
  variables:
    region:
      description: The AWS region
      enum:
      - us-east-1
      - us-east-2
      - us-west-1
      - us-west-2
      - us-gov-west-1
      - us-gov-east-1
      - ca-central-1
      - eu-north-1
      - eu-west-1
      - eu-west-2
      - eu-west-3
      - eu-central-1
      - eu-south-1
      - af-south-1
      - ap-northeast-1
      - ap-northeast-2
      - ap-northeast-3
      - ap-southeast-1
      - ap-southeast-2
      - ap-east-1
      - ap-south-1
      - sa-east-1
      - me-south-1
      default: us-east-1
  description: The Amazon SWF multi-region endpoint
- url: https://swf.{region}.amazonaws.com
  variables:
    region:
      description: The AWS region
      enum:
      - us-east-1
      - us-east-2
      - us-west-1
      - us-west-2
      - us-gov-west-1
      - us-gov-east-1
      - ca-central-1
      - eu-north-1
      - eu-west-1
      - eu-west-2
      - eu-west-3
      - eu-central-1
      - eu-south-1
      - af-south-1
      - ap-northeast-1
      - ap-northeast-2
      - ap-northeast-3
      - ap-southeast-1
      - ap-southeast-2
      - ap-east-1
      - ap-south-1
      - sa-east-1
      - me-south-1
      default: us-east-1
  description: The Amazon SWF multi-region endpoint
- url: http://swf.{region}.amazonaws.com.cn
  variables:
    region:
      description: The AWS region
      enum:
      - cn-north-1
      - cn-northwest-1
      default: cn-north-1
  description: The Amazon SWF endpoint for China (Beijing) and China (Ningxia)
- url: https://swf.{region}.amazonaws.com.cn
  variables:
    region:
      description: The AWS region
      enum:
      - cn-north-1
      - cn-northwest-1
      default: cn-north-1
  description: The Amazon SWF endpoint for China (Beijing) and China (Ningxia)
security:
- hmac: []
tags:
- name: '#X Amz Target=SimpleWorkflowService.PollForDecisionTask'
paths:
  /#X-Amz-Target=SimpleWorkflowService.PollForDecisionTask:
    parameters:
    - $ref: '#/components/parameters/X-Amz-Content-Sha256'
    - $ref: '#/components/parameters/X-Amz-Date'
    - $ref: '#/components/parameters/X-Amz-Algorithm'
    - $ref: '#/components/parameters/X-Amz-Credential'
    - $ref: '#/components/parameters/X-Amz-Security-Token'
    - $ref: '#/components/parameters/X-Amz-Signature'
    - $ref: '#/components/parameters/X-Amz-SignedHeaders'
    post:
      operationId: PollForDecisionTask
      description: <p>Used by deciders to get a <a>DecisionTask</a> from the specified decision <code>taskList</code>. 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.</p> <p>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.</p> <important> <p>Deciders should set their client side socket timeout to at least 70 seconds (10 seconds higher than the timeout).</p> </important> <important> <p>Because the number of workflow history events for a single workflow execution might be very large, the result returned might be split up across a number of pages. To retrieve subsequent pages, make additional calls to <code>PollForDecisionTask</code> using the <code>nextPageToken</code> returned by the initial call. Note that you do <i>not</i> call <code>GetWorkflowExecutionHistory</code> with this <code>nextPageToken</code>. Instead, call <code>PollForDecisionTask</code> again.</p> </important> <p> <b>Access Control</b> </p> <p>You can use IAM policies to control this action's access to Amazon SWF resources as follows:</p> <ul> <li> <p>Use a <code>Resource</code> element with the domain name to limit the action to only specified domains.</p> </li> <li> <p>Use an <code>Action</code> element to allow or deny permission to call this action.</p> </li> <li> <p>Constrain the <code>taskList.name</code> parameter by using a <code>Condition</code> element with the <code>swf:taskList.name</code> key to allow the action to access only certain task lists.</p> </li> </ul> <p>If the caller doesn't have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's <code>cause</code> parameter is set to <code>OPERATION_NOT_PERMITTED</code>. For details and example IAM policies, see <a href="https://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html">Using IAM to Manage Access to Amazon SWF Workflows</a> in the <i>Amazon SWF Developer Guide</i>.</p>
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DecisionTask'
        '480':
          description: UnknownResourceFault
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UnknownResourceFault'
        '481':
          description: OperationNotPermittedFault
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OperationNotPermittedFault'
        '482':
          description: LimitExceededFault
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LimitExceededFault'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PollForDecisionTaskInput'
      parameters:
      - name: maximumPageSize
        in: query
        schema:
          type: string
        description: Pagination limit
        required: false
        example: example
      - name: nextPageToken
        in: query
        schema:
          type: string
        description: Pagination token
        required: false
        example: token123
      - name: X-Amz-Target
        in: header
        required: true
        schema:
          type: string
          enum:
          - SimpleWorkflowService.PollForDecisionTask
        example: SimpleWorkflowService.PollForDecisionTask
      summary: Amazon SWF Poll for Decision Task
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
      tags:
      - '#X Amz Target=SimpleWorkflowService.PollForDecisionTask'
components:
  schemas:
    PageToken:
      type: string
      maxLength: 2048
    WorkflowExecutionFailedEventAttributes:
      type: object
      required:
      - decisionTaskCompletedEventId
      properties:
        reason:
          allOf:
          - $ref: '#/components/schemas/FailureReason'
          - description: The descriptive reason provided for the failure.
        details:
          allOf:
          - $ref: '#/components/schemas/Data'
          - description: The details of the failure.
        decisionTaskCompletedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>DecisionTaskCompleted</code> event corresponding to the decision task that resulted in the <code>FailWorkflowExecution</code> decision to fail this execution. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
      description: Provides the details of the <code>WorkflowExecutionFailed</code> event.
    ChildWorkflowExecutionCompletedEventAttributes:
      type: object
      required:
      - workflowExecution
      - workflowType
      - initiatedEventId
      - startedEventId
      properties:
        workflowExecution:
          allOf:
          - $ref: '#/components/schemas/WorkflowExecution'
          - description: The child workflow execution that was completed.
        workflowType:
          allOf:
          - $ref: '#/components/schemas/WorkflowType'
          - description: The type of the child workflow execution.
        result:
          allOf:
          - $ref: '#/components/schemas/Data'
          - description: The result of the child workflow execution.
        initiatedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>StartChildWorkflowExecutionInitiated</code> event corresponding to the <code>StartChildWorkflowExecution</code> <a>Decision</a> to start this child workflow execution. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
        startedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>ChildWorkflowExecutionStarted</code> event recorded when this child workflow execution was started. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
      description: Provides the details of the <code>ChildWorkflowExecutionCompleted</code> event.
    ChildPolicy:
      type: string
      enum:
      - TERMINATE
      - REQUEST_CANCEL
      - ABANDON
    TimerFiredEventAttributes:
      type: object
      required:
      - timerId
      - startedEventId
      properties:
        timerId:
          allOf:
          - $ref: '#/components/schemas/TimerId'
          - description: The unique ID of the timer that fired.
        startedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>TimerStarted</code> event that was recorded when this timer was started. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
      description: Provides the details of the <code>TimerFired</code> event.
    WorkflowExecutionCanceledEventAttributes:
      type: object
      required:
      - decisionTaskCompletedEventId
      properties:
        details:
          allOf:
          - $ref: '#/components/schemas/Data'
          - description: The details of the cancellation.
        decisionTaskCompletedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>DecisionTaskCompleted</code> event corresponding to the decision task that resulted in the <code>CancelWorkflowExecution</code> decision for this cancellation request. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
      description: Provides the details of the <code>WorkflowExecutionCanceled</code> event.
    TimerCanceledEventAttributes:
      type: object
      required:
      - timerId
      - startedEventId
      - decisionTaskCompletedEventId
      properties:
        timerId:
          allOf:
          - $ref: '#/components/schemas/TimerId'
          - description: The unique ID of the timer that was canceled.
        startedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>TimerStarted</code> event that was recorded when this timer was started. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
        decisionTaskCompletedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>DecisionTaskCompleted</code> event corresponding to the decision task that resulted in the <code>CancelTimer</code> decision to cancel this timer. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
      description: ' Provides the details of the <code>TimerCanceled</code> event. '
    WorkflowExecutionTimedOutEventAttributes:
      type: object
      required:
      - timeoutType
      - childPolicy
      properties:
        timeoutType:
          allOf:
          - $ref: '#/components/schemas/WorkflowExecutionTimeoutType'
          - description: The type of timeout that caused this event.
        childPolicy:
          allOf:
          - $ref: '#/components/schemas/ChildPolicy'
          - description: <p>The policy used for the child workflow executions of this workflow execution.</p> <p>The supported child policies are:</p> <ul> <li> <p> <code>TERMINATE</code> – The child executions are terminated.</p> </li> <li> <p> <code>REQUEST_CANCEL</code> – A request to cancel is attempted for each child execution by recording a <code>WorkflowExecutionCancelRequested</code> event in its history. It is up to the decider to take appropriate actions when it receives an execution history with this event.</p> </li> <li> <p> <code>ABANDON</code> – No action is taken. The child executions continue to run.</p> </li> </ul>
      description: Provides the details of the <code>WorkflowExecutionTimedOut</code> event.
    CancelTimerFailedCause:
      type: string
      enum:
      - TIMER_ID_UNKNOWN
      - OPERATION_NOT_PERMITTED
    UnknownResourceFault: {}
    ScheduleActivityTaskFailedEventAttributes:
      type: object
      required:
      - activityType
      - activityId
      - cause
      - decisionTaskCompletedEventId
      properties:
        activityType:
          allOf:
          - $ref: '#/components/schemas/ActivityType'
          - description: The activity type provided in the <code>ScheduleActivityTask</code> decision that failed.
        activityId:
          allOf:
          - $ref: '#/components/schemas/ActivityId'
          - description: The activityId provided in the <code>ScheduleActivityTask</code> decision that failed.
        cause:
          allOf:
          - $ref: '#/components/schemas/ScheduleActivityTaskFailedCause'
          - description: <p>The cause of the failure. This information is generated by the system and can be useful for diagnostic purposes.</p> <note> <p>If <code>cause</code> is set to <code>OPERATION_NOT_PERMITTED</code>, the decision failed because it lacked sufficient permissions. For details and example IAM policies, see <a href="https://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html">Using IAM to Manage Access to Amazon SWF Workflows</a> in the <i>Amazon SWF Developer Guide</i>.</p> </note>
        decisionTaskCompletedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>DecisionTaskCompleted</code> event corresponding to the decision that resulted in the scheduling of this activity task. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
      description: Provides the details of the <code>ScheduleActivityTaskFailed</code> event.
    CompleteWorkflowExecutionFailedEventAttributes:
      type: object
      required:
      - cause
      - decisionTaskCompletedEventId
      properties:
        cause:
          allOf:
          - $ref: '#/components/schemas/CompleteWorkflowExecutionFailedCause'
          - description: <p>The cause of the failure. This information is generated by the system and can be useful for diagnostic purposes.</p> <note> <p>If <code>cause</code> is set to <code>OPERATION_NOT_PERMITTED</code>, the decision failed because it lacked sufficient permissions. For details and example IAM policies, see <a href="https://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html">Using IAM to Manage Access to Amazon SWF Workflows</a> in the <i>Amazon SWF Developer Guide</i>.</p> </note>
        decisionTaskCompletedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>DecisionTaskCompleted</code> event corresponding to the decision task that resulted in the <code>CompleteWorkflowExecution</code> decision to complete this execution. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
      description: Provides the details of the <code>CompleteWorkflowExecutionFailed</code> event.
    Identity:
      type: string
      maxLength: 256
    DecisionTaskTimeoutType:
      type: string
      enum:
      - START_TO_CLOSE
    Name:
      type: string
      minLength: 1
      maxLength: 256
    TimerId:
      type: string
      minLength: 1
      maxLength: 256
    ActivityTaskFailedEventAttributes:
      type: object
      required:
      - scheduledEventId
      - startedEventId
      properties:
        reason:
          allOf:
          - $ref: '#/components/schemas/FailureReason'
          - description: The reason provided for the failure.
        details:
          allOf:
          - $ref: '#/components/schemas/Data'
          - description: The details of the failure.
        scheduledEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>ActivityTaskScheduled</code> event that was recorded when this activity task was scheduled. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
        startedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>ActivityTaskStarted</code> event recorded when this activity task was started. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
      description: Provides the details of the <code>ActivityTaskFailed</code> event.
    MarkerName:
      type: string
      minLength: 1
      maxLength: 256
    StartTimerFailedEventAttributes:
      type: object
      required:
      - timerId
      - cause
      - decisionTaskCompletedEventId
      properties:
        timerId:
          allOf:
          - $ref: '#/components/schemas/TimerId'
          - description: The timerId provided in the <code>StartTimer</code> decision that failed.
        cause:
          allOf:
          - $ref: '#/components/schemas/StartTimerFailedCause'
          - description: <p>The cause of the failure. This information is generated by the system and can be useful for diagnostic purposes.</p> <note> <p>If <code>cause</code> is set to <code>OPERATION_NOT_PERMITTED</code>, the decision failed because it lacked sufficient permissions. For details and example IAM policies, see <a href="https://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html">Using IAM to Manage Access to Amazon SWF Workflows</a> in the <i>Amazon SWF Developer Guide</i>.</p> </note>
        decisionTaskCompletedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>DecisionTaskCompleted</code> event corresponding to the decision task that resulted in the <code>StartTimer</code> decision for this activity task. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
      description: Provides the details of the <code>StartTimerFailed</code> event.
    DecisionTaskScheduledEventAttributes:
      type: object
      required:
      - taskList
      properties:
        taskList:
          allOf:
          - $ref: '#/components/schemas/TaskList'
          - description: The name of the task list in which the decision task was scheduled.
        taskPriority:
          allOf:
          - $ref: '#/components/schemas/TaskPriority'
          - description: <p> A task priority that, if set, specifies the priority for this decision task. Valid values are integers that range from Java's <code>Integer.MIN_VALUE</code> (-2147483648) to <code>Integer.MAX_VALUE</code> (2147483647). Higher numbers indicate higher priority.</p> <p>For more information about setting task priority, see <a href="https://docs.aws.amazon.com/amazonswf/latest/developerguide/programming-priority.html">Setting Task Priority</a> in the <i>Amazon SWF Developer Guide</i>.</p>
        startToCloseTimeout:
          allOf:
          - $ref: '#/components/schemas/DurationInSecondsOptional'
          - description: <p>The maximum duration for this decision task. The task is considered timed out if it doesn't completed within this duration.</p> <p>The duration is specified in seconds, an integer greater than or equal to <code>0</code>. You can use <code>NONE</code> to specify unlimited duration.</p>
      description: Provides details about the <code>DecisionTaskScheduled</code> event.
    StartChildWorkflowExecutionFailedEventAttributes:
      type: object
      required:
      - workflowType
      - cause
      - workflowId
      - initiatedEventId
      - decisionTaskCompletedEventId
      properties:
        workflowType:
          allOf:
          - $ref: '#/components/schemas/WorkflowType'
          - description: The workflow type provided in the <code>StartChildWorkflowExecution</code> <a>Decision</a> that failed.
        cause:
          allOf:
          - $ref: '#/components/schemas/StartChildWorkflowExecutionFailedCause'
          - description: <p>The cause of the failure. This information is generated by the system and can be useful for diagnostic purposes.</p> <note> <p>When <code>cause</code> is set to <code>OPERATION_NOT_PERMITTED</code>, the decision fails because it lacks sufficient permissions. For details and example IAM policies, see <a href="https://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html"> Using IAM to Manage Access to Amazon SWF Workflows</a> in the <i>Amazon SWF Developer Guide</i>.</p> </note>
        workflowId:
          allOf:
          - $ref: '#/components/schemas/WorkflowId'
          - description: The <code>workflowId</code> of the child workflow execution.
        initiatedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: <p>When the <code>cause</code> is <code>WORKFLOW_ALREADY_RUNNING</code>, <code>initiatedEventId</code> is the ID of the <code>StartChildWorkflowExecutionInitiated</code> event that corresponds to the <code>StartChildWorkflowExecution</code> <a>Decision</a> to start the workflow execution. You can use this information to diagnose problems by tracing back the chain of events leading up to this event.</p> <p>When the <code>cause</code> isn't <code>WORKFLOW_ALREADY_RUNNING</code>, <code>initiatedEventId</code> is set to <code>0</code> because the <code>StartChildWorkflowExecutionInitiated</code> event doesn't exist.</p>
        decisionTaskCompletedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>DecisionTaskCompleted</code> event corresponding to the decision task that resulted in the <code>StartChildWorkflowExecution</code> <a>Decision</a> to request this child workflow execution. This information can be useful for diagnosing problems by tracing back the chain of events.
        control:
          allOf:
          - $ref: '#/components/schemas/Data'
          - description: The data attached to the event that the decider can use in subsequent workflow tasks. This data isn't sent to the child workflow execution.
      description: Provides the details of the <code>StartChildWorkflowExecutionFailed</code> event.
    ScheduleActivityTaskFailedCause:
      type: string
      enum:
      - ACTIVITY_TYPE_DEPRECATED
      - ACTIVITY_TYPE_DOES_NOT_EXIST
      - ACTIVITY_ID_ALREADY_IN_USE
      - OPEN_ACTIVITIES_LIMIT_EXCEEDED
      - ACTIVITY_CREATION_RATE_EXCEEDED
      - DEFAULT_SCHEDULE_TO_CLOSE_TIMEOUT_UNDEFINED
      - DEFAULT_TASK_LIST_UNDEFINED
      - DEFAULT_SCHEDULE_TO_START_TIMEOUT_UNDEFINED
      - DEFAULT_START_TO_CLOSE_TIMEOUT_UNDEFINED
      - DEFAULT_HEARTBEAT_TIMEOUT_UNDEFINED
      - OPERATION_NOT_PERMITTED
    SignalExternalWorkflowExecutionFailedEventAttributes:
      type: object
      required:
      - workflowId
      - cause
      - initiatedEventId
      - decisionTaskCompletedEventId
      properties:
        workflowId:
          allOf:
          - $ref: '#/components/schemas/WorkflowId'
          - description: The <code>workflowId</code> of the external workflow execution that the signal was being delivered to.
        runId:
          allOf:
          - $ref: '#/components/schemas/WorkflowRunIdOptional'
          - description: The <code>runId</code> of the external workflow execution that the signal was being delivered to.
        cause:
          allOf:
          - $ref: '#/components/schemas/SignalExternalWorkflowExecutionFailedCause'
          - description: <p>The cause of the failure. This information is generated by the system and can be useful for diagnostic purposes.</p> <note> <p>If <code>cause</code> is set to <code>OPERATION_NOT_PERMITTED</code>, the decision failed because it lacked sufficient permissions. For details and example IAM policies, see <a href="https://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html">Using IAM to Manage Access to Amazon SWF Workflows</a> in the <i>Amazon SWF Developer Guide</i>.</p> </note>
        initiatedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>SignalExternalWorkflowExecutionInitiated</code> event corresponding to the <code>SignalExternalWorkflowExecution</code> decision to request this signal. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
        decisionTaskCompletedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>DecisionTaskCompleted</code> event corresponding to the decision task that resulted in the <code>SignalExternalWorkflowExecution</code> decision for this signal. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
        control:
          allOf:
          - $ref: '#/components/schemas/Data'
          - description: The data attached to the event that the decider can use in subsequent workflow tasks. This data isn't sent to the workflow execution.
      description: Provides the details of the <code>SignalExternalWorkflowExecutionFailed</code> event.
    TaskPriority:
      type: string
    FailWorkflowExecutionFailedEventAttributes:
      type: object
      required:
      - cause
      - decisionTaskCompletedEventId
      properties:
        cause:
          allOf:
          - $ref: '#/components/schemas/FailWorkflowExecutionFailedCause'
          - description: <p>The cause of the failure. This information is generated by the system and can be useful for diagnostic purposes.</p> <note> <p>If <code>cause</code> is set to <code>OPERATION_NOT_PERMITTED</code>, the decision failed because it lacked sufficient permissions. For details and example IAM policies, see <a href="https://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html">Using IAM to Manage Access to Amazon SWF Workflows</a> in the <i>Amazon SWF Developer Guide</i>.</p> </note>
        decisionTaskCompletedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>DecisionTaskCompleted</code> event corresponding to the decision task that resulted in the <code>FailWorkflowExecution</code> decision to fail this execution. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.
      description: Provides the details of the <code>FailWorkflowExecutionFailed</code> event.
    CauseMessage:
      type: string
      maxLength: 1728
    StartAtPreviousStartedEvent:
      type: boolean
    WorkflowExecutionTerminatedEventAttributes:
      type: object
      required:
      - childPolicy
      properties:
        reason:
          allOf:
          - $ref: '#/components/schemas/TerminateReason'
          - description: The reason provided for the termination.
        details:
          allOf:
          - $ref: '#/components/schemas/Data'
          - description: The details provided for the termination.
        childPolicy:
          allOf:
          - $ref: '#/components/schemas/ChildPolicy'
          - description: <p>The policy used for the child workflow executions of this workflow execution.</p> <p>The supported child policies are:</p> <ul> <li> <p> <code>TERMINATE</code> – The child executions are terminated.</p> </li> <li> <p> <code>REQUEST_CANCEL</code> – A request to cancel is attempted for each child execution by recording a <code>WorkflowExecutionCancelRequested</code> event in its history. It is up to the decider to take appropriate actions when it receives an execution history with this event.</p> </li> <li> <p> <code>ABANDON</code> – No action is taken. The child executions continue to run.</p> </li> </ul>
        cause:
          allOf:
          - $ref: '#/components/schemas/WorkflowExecutionTerminatedCause'
          - description: If set, indicates that the workflow execution was automatically terminated, and specifies the cause. This happens if the parent workflow execution times out or is terminated and the child policy is set to terminate child executions.
      description: Provides the details of the <code>WorkflowExecutionTerminated</code> event.
    PageSize:
      type: integer
      minimum: 0
      maximum: 1000
    LambdaFunctionCompletedEventAttributes:
      type: object
      required:
      - scheduledEventId
      - startedEventId
      properties:
        scheduledEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>LambdaFunctionScheduled</code> event that was recorded when this Lambda task was scheduled. To help diagnose issues, use this information to trace back the chain of events leading up to this event.
        startedEventId:
          allOf:
          - $ref: '#/components/schemas/EventId'
          - description: The ID of the <code>LambdaFunctionStarted</code> event recorded when this activity task started. To help diagnose issues, use this information to trace back the chain of events leading up to this event.
        result:
          allOf:
          - $ref: '#/components/schemas/Data'
          - description: The results of the Lambda task.
      description: Provides

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