Integrating Azure Service Bus with Orkes Conductor

This developer guide includes the steps to integrate Azure Service Bus with Orkes Conductor. This integration lets you connect your Azure Service Bus to Conductor to publish and receive messages from queues.

Get Configuration Credentials from Azure Service Bus

Before beginning the integration process in Orkes Conductor, you must get specific configuration credentials, such as the endpoint and namespace of the service bus.

• Refer to the official documentation on how to get the namespace.
• The endpoint is part of the connection string of the service bus. Refer to the official documentation on how to get the connection string (containing the endpoint) of the service bus.

Integrating with Azure Service Bus as a Message Broker

Now, you have the required configuration credentials from Azure Service Bus. Let’s integrate with Orkes Conductor.

1. Navigate to Integrations from the left menu on the Orkes Conductor cluster.
2. Click + New integration from the top-right corner.
3. Under the Message Broker section, choose Azure Service Bus.
4. Click +Add and provide the following parameters:

Paremeters	Description
Integration Name	A name to identify your integration.
Connection Type	Choose the required connection type. It can take the following values: Connection String Password Less
Endpoint	The endpoint of the service bus. Refer to the previous section on how to get this. Note: This field is applicable only if the Connection Type is chosen as Connection String.
Namespace	The namespace of the service bus. Refer to the previous section on how to get this. Note: This field is applicable only if the Connection Type is chosen as Password Less.
Description	A description of the integration.

5. You can toggle on the Active button to activate the integration instantly.
6. Click Save.

Creating Event Handlers in Orkes Conductor

The integration is created successfully now. The next step is to create an event handler in Orkes Conductor.

To do this:

1. Navigate to Definitions > Event Handler from the left menu on your Orkes Conductor cluster.
2. Click the + Define event handler option from the top-right corner.
3. Create an event handler with the following configurations:

Event Handler Parameters	Description
Name	A name to identify your event handler definition.
Event	The event integration you have created in the following format: Type : Config Name : Queue Name Example: azure:azureendpoint:events-test-1 Notes: The drop-down automatically lists the integration you’ve added to the Conductor cluster. You can choose that and add the queue name you want to publish/receive messages.
Condition	The ECMAScript to control the message processing if required. Check out the event handler documentation for more details.
Actions	Choose the required actions to be carried out on sending or receiving the events to/from Azure Service Bus. It can take the following values: Complete Task Terminate Workflow Update Variables Fail Task Start Workflow Each type of action requires and supports a certain set of input parameters. Check out the event handler documentation for more details.
Active	Set this to true or false. It determines if the event handler is running or not.

A sample JSON for the event handler is as follows:

{
 "name": "asb-endpoint-event-handler",
 "event": "azure:azureendpoint:events-test-1",
 "condition": "true",
 "actions": [
   {
     "action": "start_workflow",
     "start_workflow": {
       "name": "event-handler-test",
       "version": 1,
       "correlationId": "",
       "input": {
         "payload": "${$}"
       }
     },
     "expandInlineJSON": false
   }
 ],
 "active": true,
 "evaluatorType": "javascript"
}

RBAC - Governance on who can use Integrations

Once the integration is added, the next step is determining who can access these integrations.

The permissions can be granted to applications/groups within the Orkes Conductor cluster.

To provide explicit permission to Groups:

1. From the left menu on your Orkes Conductor cluster, navigate to Access Control > Groups.
2. Create a new group or choose an existing group.
3. Under the Permissions section, click +Add Permission.
4. From the Integrations sub-tab, choose the integration with required permissions.
5. Click Add Permissions. This ensures that all the group members can access these integration models in their workflows.

Similarly, you can also provide permissions to applications.

Creating Workflow in Orkes Conductor

This step involves creating a workflow with an event task in Orkes Conductor. Here, we are utilizing the Azure Service Bus queue as a sink for the event.

You can quickly build a workflow from UI in Orkes Conductor.

For this,

1. Navigate to Definitions > Workflow, and click the + Define Workflow button.
2. Create a workflow with an event task with the Sink in the format azure:john-test:events-test-1, where “john-test” is the integration name and “events-test-1”, is the queue to which Conductor should send/receive messages.

Executing Workflow in Orkes Conductor

The workflow can be run using different methods. You can use the Run Workflow button for quick testing, as shown in the image below:

Upon successful execution, you can verify the message's delivery through the Azure Service Bus console.

The action added in the event handler definition was to start the workflow event-handler-test. You can verify the same from the Executions > Workflow page.