Retrieves an external task by id, corresponding to the ExternalTask interface in the engine.

Method

GET /external-task/{id}

Parameters

Path Parameters

Name	Description
id	The id of the external task to be retrieved.

Result

A JSON object corresponding to the ExternalTask interface in the engine. Its properties are as follows:

Name	Type	Description
activityId	String	The id of the activity that this external task belongs to.
activityInstanceId	String	The id of the activity instance that the external task belongs to.
errorMessage	String	The full error message submitted with the latest reported failure executing this task; null if no failure was reported previously or if no error message was submitted
executionId	String	The id of the execution that the external task belongs to.
id	String	The id of the external task.
lockExpirationTime	String	The date that the task's most recent lock expires or has expired.
processDefinitionId	String	The id of the process definition the external task is defined in.
processDefinitionKey	String	The key of the process definition the external task is defined in.
processInstanceId	String	The id of the process instance the external task belongs to.
tenantId	String	The id of the tenant the external task belongs to.
retries	Number	The number of retries the task currently has left.
suspended	Boolean	A flag indicating whether the external task is suspended or not.
workerId	String	The id of the worker that possesses or possessed the most recent lock.
priority	Number	The priority of the external task.
topicName	String	The topic name of the external task.
businessKey	String	The business key of the process instance the external task belongs to.

Response Codes

Code	Media type	Description
200	application/json	Request successful.
404	application/json	External task with the given id does not exist. See the Introduction for the error response format.

Example

Request

GET /external-task/anExternalTaskId

Response

    {
      "activityId": "anActivityId",
      "activityInstanceId": "anActivityInstanceId",
      "errorMessage": "anErrorMessage",
      "executionId": "anExecutionId",
      "id": "anExternalTaskId",
      "lockExpirationTime": "2015-10-06T16:34:42.000+0200",
      "processDefinitionId": "aProcessDefinitionId",
      "processDefinitionKey": "aProcessDefinitionKey",
      "processInstanceId": "aProcessInstanceId",
      "tenantId": null,
      "retries": 3,
      "suspended": false,
      "workerId": "aWorkerId",
      "priority":0,
      "topicName": "aTopic",
      "businessKey": "aBusinessKey"
    }