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how to subscribe to platform events in salesforce

by Claudine Schaefer Published 2 years ago Updated 2 years ago
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How to Subscribe to Salesforce Platform Events with Mule 4

  • Subscribe to Platform Events. Follow below steps to develop a mule flow to subscribe to Salesforce Platform events with Mule 4.
  • Subscribe Channel Listener. Step 3: Now add Transform message to extract the event message that is encapsulated in the above Object.
  • Replay Channel Listener. ...
  • Conclusion. ...

Full Answer

What are the different platforms in Salesforce?

With that, here are the tools you can use to build apps on Lightning Platform:

  • Salesforce Environments. A secure and isolated development environment for developers and admins to test ideas, accelerate app development, and customize the platform. ...
  • Heroku. It lets you extend Salesforce by building engaging experiences through custom apps. ...
  • mySalesforce. ...
  • myEinstein. ...
  • Salesforce App Cloud. ...

How to subscribe to Salesforce platform event?

Subscribe Channel Listener. Step 1: Add Salesforce Subscribe channel listener and configure as shown below: Step 2: Log the actual platform event which will be in the Object format like below: The sample event would look like: Step 3: Now add Transform message to extract the event message that is encapsulated in the above Object.

How to create your first app in Salesforce?

  • To create application in lightning, Click File | New | Lightning Application.
  • Enter the name, and click Ok. E.g. appName.app resource. You may set name accordingly.
  • Now use c:helloWorld to refer the component helloWorld.cmp using the default namespace c. If your organization has a registered namespace, you can use it to reference. ...

What is a platform event?

Platform events are the event messages that your apps send and receive. They simplify the process of communicating changes and responding to them without requiring you to write complex logic. Publishers and subscribers communicate with each other through platform events. One or more subscribers can listen to the same event and carry out actions.

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How do I add a subscription to platform event?

Subscribe to Platform Event Notifications with Apex TriggersClick the Setup icon, select Developer Console, and click File | New | Apex Trigger.Provide a name and choose your event for the sObject, and click Submit.

How can external system Subscribe to platform events?

Subscribe to platform events with the empApi component in your Lightning web component or Aura component. The empApi component provides access to methods for subscribing to a streaming channel and listening to event messages. Use CometD to subscribe to platform events in an external client.

How do I subscribe to a platform event in workbench?

Subscribing to Platform Event via WorkbenchLogin to wokbench.developerforce.com.Navigate to Streaming Push Topics under Queries.Select Generic Subscriptions.Fill the Subscription field in the format /event/{EVENT_NAME}In the above example, it should be /event/Test_Event__e.Click the subscribe button.

How do I use platform events in Salesforce?

After a platform event has been defined in your Salesforce org, publish event messages from a Salesforce app using processes, flows, or Apex or an external app using Salesforce APIs. Receive platform events in processes, flows, Apex triggers, or CometD clients. Add Apex tests to test platform event subscribers.

How do I query a platform event in Salesforce?

From Setup, enter Platform Events in the Quick Find box, then select Platform Events. Click your event's name. On the event's definition page, the Subscriptions related list shows all the active triggers, processes, and platform event–triggered flows that are subscribed to the platform event.

Can Salesforce subscribe to external events?

You can publish event messages from a Force.com app or an external app using Apex or Salesforce APIs and you can subscribe from the Salesforce or external apps or use long polling with cometD as well.

How do you call a platform event from flow?

Go to Setup à Enter and choose Flows. Click on New Flow and choose Platform Event-Triggered Flow. Choose respective Platform event object to subscribe in the Start element. Drag and drop Create record element and capture the published Platform event field values with the respective Salesforce object.

What is platform event flow in Salesforce?

Platform Events in Salesforce Platform Event is based on Event-Driven Architecture which enable apps to communicate inside and outside of Salesforce. Platform events are based on the publish/subscribe model and work directly with a message bus which handles the queue of incoming events and processes listening for them.

How do I publish a platform event in Salesforce?

Publish Platform Event with Flow Navigate to Setup > Process Automation > Flows select New Flow and then Record-Triggered Flow . Use the Freeform to create the new Flow. Select Opportunity as Object and define A record is created as the trigger before we continue. Create a Salesforce Flow to publish a Platform Event.

Can we query platform events?

For platform events, you can query usage data for these metrics. The first value is the metric name value that you supply in the query. For change data capture events, you can query usage data for these metrics. The first value is the metric name value that you supply in the query.

Why do we need a platform event in Salesforce?

Platform Events are used to deliver secure, scalable, and customizable notification within Salesforce or external app. Platform Event is based on Event-Driven Architecture. This is built in real time integration patterns in the Salesforce Platform which helps to reduce point-to-point integration.

Are platform events asynchronous?

Although platform event triggers run asynchronously, they're short-lived processes that execute in batches rather quickly. Because a platform event trigger runs in a separate transaction from the one that fired it, governor limits are reset, and the trigger gets its own set of limits.

What is cometd in Visualforce?

CometD is a scalable HTTP-based event routing bus that uses an AJAX push technology pattern known as Comet. It implements the Bayeux protocol. Long polling, also called Comet programming, allows emulation of an information push from a server to a client. Similar to a normal poll, the client connects and requests information from the server. However, instead of sending an empty response if information isn't available, the server holds the request and waits until information is available (an event occurs).

How does Salesforce work?

Your Salesforce app uses a trigger to listen to events. Once your app receives the notification from the order system through the trigger, it creates a task to follow up on the order shipment.

Subscribe to Platform Events

Follow below steps to develop a mule flow to subscribe to Salesforce Platform events with Mule 4.

Subscribe Channel Listener

Step 1: Add Salesforce Subscribe channel listener and configure as shown below:

Replay Channel Listener

You can also use Replay channel listener operation to subscribe to Salesforce Platform events. You can subscribe events based on Replay conditions such as ALL, ONLY_NEW and FROM_REPLAY_ID .

Conclusion

We hope this article helped you to learn how to subscribe to Salesforce platform events with Mule 4.

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