Contents
Can Salesforce subscribe to external events?
Subscribe to Platform Event Notifications with CometD External apps subscribe to platform events with CometD and perform long polling. Salesforce provides a Java library, EMP Connector, which implements all the details of connecting to CometD and listening on a channel.
How do I run a platform event in Salesforce?
Define and Publish Platform Events
- From Setup, enter Platform Events in the Quick Find box, then select Platform Events.
- On the Platform Events page, click New Platform Event.
- For Label, enter Cloud News.
- For Plural Label, enter Cloud News.
- For Description, enter Cloud news events deliver news at your fingertips.
Is Async a platform event?
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.
When should I use stream API?
When to Use Java Streams
- Raise a collection to a stream.
- Ride the stream: filter values, transform values, limit the output.
- Compose small individual operations.
- Collect the result back into a concrete collection.
How to subscribe to platform events in Salesforce?
The empApi Lightning component and Visualforce apps receive event notifications through CometD. In an external app, you subscribe to events using CometD as well. You’ve probably used Apex triggers before, to perform actions based on database events. With platform events, the process is similar.
How to subscribe to platform events in external client?
Use CometD to subscribe to platform events in an external client. Implement your own CometD client or use EMP Connector, an open-source, community-supported tool that implements all the details of connecting to CometD and listening on a channel.
How are apex triggers used in the Salesforce platform?
On the Salesforce Platform, Apex triggers, processes, flows. The empApi Lightning component and Visualforce apps receive event notifications through CometD. In an external app, you subscribe to events using CometD as well. You’ve probably used Apex triggers before, to perform actions based on database events.
How does subscribe to platform events work in apex?
You’ve probably used Apex triggers before, to perform actions based on database events. With platform events, the process is similar. You simply write an after insert Apex trigger on the event object to subscribe to incoming events. Triggers provide an autosubscription mechanism in Apex.