Http task

Http task activity allows submitting and storing the results of a HTTP call.


Exclusive	When it receives a special job from a specific process example, it makes jobs run in order.
Execution listeners	Listeners for an activity, process, sequence flow, start and end event.
Multi-instance type	Determines if multiple instances of this activity are created.
Cardinality (Multi-instance)	An expression or numeric value determines how many instances are created.
Collection (Multi-instance)	The number of instances is determined by the elements of a collection. For each element in the collection, a new instance is created.
Element Variable (Multi-instance )	The variable under which each element is available to the newly created instance.
Completion Condition (Multi-instance)	An expression that, if it evaluated to `true` , stops the creation of new instances.
Is for compensation	A flag that identifies whether this activity is intended for the purposes of compensation.
Request method	Request URL of the HTTP call.
Request URL	Request method to be used in the HTTP.
Request headers	Line-separated HTTP request headers.
Request body	Request body to be sent, e.g., a JSON file.
Request body encoding	Encoding of the request body.
Request timeout	Request timeout in milliseconds.
Disallow redirects	Determines whether HTTP redirects can be redirected.
Fail status codes	List of Http response status codes to fail the request and throw a FlowableException.
Handle status codes	List of status codes for which the task throws BpmnError which can be caught by a boundary error event.
Ignore exception	Determines whether exceptions are ignored and stored in the variable indicated in the response variable.
Response variable name	The variable name in which the HTTP response is stored.
Save request variables	Determines whether all request variables are stored. By default, only response related variables are stored as variables.
Save response status, headers	Determines whether response variables including HTTP status, headers etc. are stored. By default, only the response body is stored as a variable.
Result variable preﬁx	A prefix that is put in front of the variable name of the result variables for easier grouping.
Save response as a transient variable	Determines whether the response variables should be stored as transient.
Save response as JSON	Determines whether the response variable is stored as a JSON variable instead of a String.

Execution listeners examples

You can use the Execution listeners as shown in the examples.

Start

End

Take

Multi-instance type examples

You can use the Multi-instance type as shown in the examples.

Default, only one instance is created:

None

Activities are created in parallel. This is a good practice for User tasks activity:

Parallel

Activities are created sequentially. This is a good practice for Service tasks activity:

Sequential

Cardinality (Multi-instance) examples

You can use the Cardinality (Multi-instance) as shown in the examples.

${number}

2

Collection (Multi-instance) example

You can use the Collection (Multi-instance) as shown in the example.

2

Element variable (Multi-instance) example

You can use the Element variable (Multi-instance) as shown in the example.

elementvar

Completion Condition (Multi-instance) example

You can use the Completion Condition (Multi-instance) as shown in the example.

true

${variable==True}

Request URL example

You can use the Request URL as shown in the example.

http://your-system.example.com/your-endpoint/${someVariable}

Request method examples

You can use the Request method as shown in the examples.

GET

POST

PUT

DELETE

Request body example

You can use the Request method as shown in the example.

{‘clientId’: ${clientId}, ‘name’: ${name}}

Request timeout example

You can use the Request timeout as shown in the example.

25

Fail status code examples

You can use the Fail status code as shown in the examples.

400

404

5XX

Status codes in handleStatusCodes override those in failStatusCodes when they are both set.

Response variable name example

You can use the Response variable name as shown in the example.

responseVar

Result variable prefix examples

You can use the Result variable prefix as shown in the examples.

responseProtocol

responseReason

responseStatusCode

responseHeaders

responseBody

errorMessage