Using Camunda Business Processes
Liferay 7.4+, and all quarterly releases
Liferay’s native workflow features are designed for business processes requiring basic review and approval. If your business process management (BPM) needs are more complex, you can connect Liferay to Camunda. Its advanced automated business processes use the Business Process Model and Notation (BPMN) standard and its decision rules use Decision Model and Notation (DMN).
You can use these connector templates from the Camunda Modeler:
| Name | Description | Outbound or Inbound | Camunda Element |
|---|---|---|---|
| Liferay Connector | Call Liferay APIs from Camunda tasks. | Outbound | Service Task |
| Liferay Webhook Connector * | Receive events from Liferay’s object webhook actions (e.g., trigger the workflow in Camunda when a form is submitted in Liferay). | Inbound | Event (varies according to need; see below) |
| Start Event | Use the webhook payload to start a process without checking for uniqueness. | Inbound | Start Event |
| Message Start | Make sure the same payload was not already used to start a process, then start one if it’s unique. | Inbound | Message Start Event |
| Intermediate | Use the payload to advance an already running process instance. | Inbound | Intermediate Throw/Catch Event |
| Boundary | Use the payload while a task is active to either change the workflow path or trigger a parallel path. | Inbound | Message Boundary Event |
Connecting Liferay to Camunda
To connect Liferay to Camunda, install the Liferay connector templates into Camunda Modeler:
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Go to https://github.com/liferay/liferay-portal/tree/master/modules/etl/camunda/element-templates
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For each template you want, click Download Raw File.
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In Camunda Modeler, open your project and click Create New → Upload File; then select the file you downloaded.
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Open the new connector and publish it.
The Liferay connector templates are currently available by manual upload only.