Queries for historic external task logs that fulfill the given parameters. The size of the result set can be retrieved by using the Get External Task Log Count method.

Method

GET /history/external-task-log

Parameters

Query Parameters

Name	Description
logId	Filter by historic external task log id.
externalTaskId	Filter by external task id.
topicName	Filter by an external task topic.
workerId	Filter by the id of the worker that the task was most recently locked by.
errorMessage	Filter by external task exception message.
activityIdIn	Only include historic external task logs which belong to one of the passed activity ids.
activityInstanceIdIn	Only include historic external task logs which belong to one of the passed activity instance ids.
executionIdIn	Only include historic external task logs which belong to one of the passed execution ids.
processInstanceId	Filter by process instance id.
processDefinitionId	Filter by process definition id.
processDefinitionKey	Filter by process definition key.
tenantIdIn	Only include historic external task log entries which belong to one of the passed and comma-separated tenant ids.
withoutTenantId	Only include historic external task log entries that belong to no tenant. Value may only be true, as false is the default behavior.
priorityLowerThanOrEquals	Only include logs for which the associated external task had a priority lower than or equal to the given value. Value must be a valid long value.
priorityHigherThanOrEquals	Only include logs for which the associated external task had a priority higher than or equal to the given value. Value must be a valid long value.
creationLog	Only include creation logs. Value may only be true, as false is the default behavior.
failureLog	Only include failure logs. Value may only be true, as false is the default behavior.
successLog	Only include success logs. Value may only be true, as false is the default behavior.
deletionLog	Only include deletion logs. Value may only be true, as false is the default behavior.
sortBy	Sort the results by a given criterion. Valid values are timestamp, externalTaskId, topicName, workerId, retries, priority, activityId, activityInstanceId, executionId, processInstanceId, processDefinitionId, processDefinitionKey and tenantId. Must be used in conjunction with the sortOrder parameter.
sortOrder	Sort the results in a given order. Values may be asc for ascending order or desc for descending order. Must be used in conjunction with the sortBy parameter.
firstResult	Pagination of results. Specifies the index of the first result to return.
maxResults	Pagination of results. Specifies the maximum number of results to return. Will return less results if there are no more results left.

Result

A JSON array of historic external task log objects. Each historic external task log object has the following properties:

Name	Value	Description
id	String	The id of the log entry.
externalTaskId	String	The id of the external task.
timestamp	String	The time when the log entry has been written.
topicName	String	The topic name of the associated external task.
workerId	String	The id of the worker that posessed the most recent lock.
retries	Number	The number of retries the associated external task has left.
priority	Number	The execution priority the external task had when the log entry was created.
errorMessage	String	The message of the error that occurred by executing the associated external task.
activityId	String	The id of the activity on which the associated external task was created.
activityInstanceId	String	The id of the activity instance on which the associated external task was created.
executionId	String	The execution id on which the associated external task was created.
processInstanceId	String	The id of the process instance on which the associated external task was created.
processDefinitionId	String	The id of the process definition which the associated external task belongs to.
processDefinitionKey	String	The key of the process definition which the associated external task belongs to.
tenantId	String	The id of the tenant that this historic external task log entry belongs to.
creationLog	boolean	A flag indicating whether this log represents the creation of the associated external task.
failureLog	boolean	A flag indicating whether this log represents the failed execution of the associated external task.
successLog	boolean	A flag indicating whether this log represents the successful execution of the associated external task.
deletionLog	boolean	A flag indicating whether this log represents the deletion of the associated external task.
removalTime	String	The time after which this log should be removed by the History Cleanup job. Default format* yyyy-MM-dd'T'HH:mm:ss.SSSZ.
rootProcessInstanceId	String	The process instance id of the root process instance that initiated the process containing this log.

* For further information, please see the documentation.

Response Codes

Code	Media type	Description
200	application/json	Request successful.
400	application/json	Returned if some of the query parameters are invalid, for example if a sortOrder parameter is supplied, but no sortBy. See the Introduction for the error response format.

Example

Request

GET /history/external-task-log?externalTaskId=anExternalTaskId

Response

[
	{
	  "id" : "someId",
	  "timestamp" : "2017-01-15T15:22:20.000+0200",
	  "externalTaskId" : "anExternalTaskId",
	  "topicName" : "aTopicName",
	  "workerId" : "aWorkerId",
	  "retries" : 3,
	  "priority": 5,
	  "errorMessage" : "An error occured!",
	  "activityId" : "externalServiceTask",
	  "activityInstanceId" : "externalServiceTask:15",
	  "executionId" : "anExecutionId",
	  "processInstanceId" : "aProcessInstanceId",
	  "processDefinitionId" : "aProcessDefinitionId",
	  "processDefinitionKey" : "aProcessDefinitionKey",
	  "tenantId": null,
	  "creationLog" : false,
	  "failureLog" : true,
	  "successLog" : false,
	  "deletionLog" : false,
	  "removalTime":"2018-02-10T14:33:19.000+0200",
	  "rootProcessInstanceId": "aRootProcessInstanceId"
	}
]