A platform event is a special kind of Salesforce entity, similar in many ways to a Salesforce object. An event message is an instance of a platform event, similar to how a record is an instance of a Salesforce object. Unlike with records, you can’t update or delete event messages or view them in the Salesforce user interface.
Full Answer
What is an event message in Salesforce?
An event message is an instance of a platform event, similar to how a record is an instance of a custom or standard object. Unlike custom or standard objects, you can’t update or delete event records. You also can’t view event records in the Salesforce user interface, and platform events don’t have page layouts.
What is Salesforce standard platform event?
Salesforce provides events with predefined fields, called standard platform events. An example of a standard platform event is AssetTokenEvent, which monitors OAuth 2.0 authentication activity. Another example is BatchApexErrorEvent, which reports errors encountered in batch Apex jobs.
What is the Salesforce enterprise messaging platform?
The Salesforce enterprise messaging platform offers the benefits of event-driven software architectures. Platform events are the event messages (or notifications) that your apps send and receive to take further action. Platform events simplify the process of communicating changes and responding to them without writing complex logic.
How does a process process a platform event message?
When it starts, the process looks for an Asset record whose serial number matches the serial number in the event message. If platform event–triggered flows, paused flow interviews, and processes are subscribed to the same platform event, we can’t guarantee which one processes each event message first.
How do I know if a platform event is published in Salesforce?
To enable receiving publish status events for your platform event, in Setup, click Track publish status on the event's definition page. Or in Metadata API, set the enablePublishStatusTracking field on CustomObject to true .
How do platform events work 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 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.
What are some characteristics of a platform event message?
Q4)What are some characteristics of a platform event message? I)It is similar to a Salesforce object record, it is not viewable in the user interface, and it can't be edited or deleted. II)It is an object, it can't be edited or deleted, and it is viewable in the user interface.
When platform events are published?
Platform events are scalable and secure messages holding data. The publishers publish the event messages that the subscribers receive in real-time. If one wants to modify the data publishes, he needs to define platform event fields.
How do you trigger a platform event?
After an event message is published, the after insert trigger is fired. To create a platform event trigger, use the Developer Console. Click 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.
Can we query on platform event?
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.
What is platform event in Salesforce example?
Platform events are secure and scalable messages that contain data. Publishers publish event messages that subscribers receive in real time. To customize the data published, define platform event fields. Platform events are part of Salesforce's enterprise messaging platform.
How do I find published platform events?
To find Platform Events published and delivered consumption for the last 90 days, we will use Developer Console to Query PlatformEventUsageMetric object. Today is March 20, 2022 so that means that 90 days before today would be December 20, 2021.
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.
What is a platform status alert event?
Notifies subscribers of alerts that occur during the processing of a user request or service job execution. This object is available in API version 45.0 and later. For example, suppose that a formula is evaluated as part of processing user requests.
How to create a custom event in Salesforce?
Create a platform event definition by giving it a name and adding custom fields. Platform events support a subset of field types in Salesforce. See Platform Event Fields. This table lists a sample definition of custom fields for a printer ink event.
What is Salesforce platform?
The Salesforce enterprise messaging platform offers the benefits of event-driven software architectures. Platform events are the event messages (or notifications) that your apps send and receive to take further action . Platform events simplify the process of communicating changes and responding to them without writing complex logic. Publishers and subscribers communicate with each other through events. One or more subscribers can listen to the same event and carry out actions.
What is replay ID in Salesforce?
Salesforce assigns a replay ID value to a received platform event message and persists it in the event bus. Subscribers receive platform event messages from the event bus in the order of the replay ID.
What is high volume event?
Use high-volume platform events to publish and process millions of events efficiently and to scale your event-based apps. Previously, standard-volume events were available. In API version 45.0 and later, your new custom event definitions are high volume by default. Standard-volume events are still supported but not available for new event definitions. High-volume platform events offer better scalability than standard-volume platform events.
When are platform events published?
Platform event messages are published either immediately or after a transaction is committed, depending on the publish behavior you set in the platform event definition . Platform events defined to be published immediately don't respect transaction boundaries, but those defined to be published after a transaction is committed do. For more information, see Platform Event Fields. Note the following:
Can you publish multiple events in Salesforce?
If you publish multiple events in one publish call, the order of events in a batch is guaranteed for that publish request. So the order of event messages that are stored in the event bus and delivered to subscribers matches the order of events that are passed in the call. You can publish multiple events in several ways, including the Apex EventBus.publish method or the REST API composite resource. For events published across different requests, the order of events is not guaranteed because publish requests can be processed by different Salesforce application servers. As a result, a later request could be processed faster than an earlier request.
How to define platform events in Salesforce?
Just like custom objects, you define platform events in Salesforce. You create a platform event definition by giving it a name and adding custom fields. Here is a sample definition of custom fields for a news event for the Cloud News agency.
What is Salesforce platform?
The Salesforce enterprise messaging platform offers the benefits of event-driven software architecture. 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.
How does Salesforce communicate with external systems?
In these scenarios, Salesforce and external systems communicate through platform event messages. In the first scenario, an app in Salesforce notifies external order fulfillment apps of a product shipment order. In the second scenario, an external product app notifies Salesforce of merchandise returns. The last scenario shows how event messages are used within Salesforce by using triggers.
What does a Salesforce lead trigger do?
When a lead is assigned in Salesforce, a lead trigger fires and checks open opportunities and cases related to the lead owner. Based on the related records, the trigger publishes an event that is received by a Salesforce app. Based on the event information, the app reassigns the lead and creates a Chatter post.
What is Lightning Platform API?
In the Lightning Platform API Basics module, we use the analogy of radar on a pirate’s ship to represent event detection. This analogy works well for the streaming of PushTopic events, which are based on changes in Salesforce records. That communication model requires only a subscriber. But with platform events, there are two parties to the communication: a sender and a receiver. They are two of the components of an event-driven architecture.
What is a trigger in Salesforce?
The external system publishes a platform event to alert Salesforce to the merchandise return. An event listener (a trigger) in Salesforce receives the event and performs some actions. For example, the trigger might alert the sales representative to the return, and send a confirmation email to the customer.
What happens when an opportunity closes in Salesforce?
When an opportunity closes in Salesforce, your company has won a deal with a customer. Let’s say you use vendors to ship products associated with an opportunity. Each vendor has an external app that processes shipment orders. The external app listens to platform events. When an opportunity closes, a trigger, which is part of a product order app in Salesforce, fires and publishes a platform event message. Each vendor app is notified of the event and creates a shipment order for a specific product.
Is getErrors a success?
Even though getErrors returns an error, that "error" is technically a success, as you can see in the presence of an id, and the isSuccess flag being true. I ran into this issue through the REST/SOAP API when an external partner was trying to connect with our org. Rather than inspect the success status, the connector was checking for the presence of an error, and failing the successful integration because it was non-empty.
Can you publish an event manually?
Just to be safe, I would publish an event manually through the developer console until you can get the listeners to acknowledge receip t. This just cuts out any hidden problems on the publishing end.
Can you log as an anonymous user in Apex?
I assume you didn't remove it, but just to be sure, nothing will be logged under that user if an Apex trigger isn't currently listening to that event. Note: process builder listeners log under the user who published the platform event.
Does Salesforce return an error?
The claim was that the uuid of the platform event (e.g. 232fd30e-0a71-42bd-a97b-be0e329b2ded) needed to be returned to clients after insert, but because there is a chance the processing of a platform event may yield an error, this information is returned in the errors array that normal SObjects use to represent actual, definite errors. I personally think that's a little silly, since no one who understands publish/subscribe would expect the publisher to know if a subscriber had an error; I think the real reason is that they needed a way to return information without giving platform events a different API schema than normal SObjects.
Synchronous Errors
The following error status codes are returned immediately in the publish call result.
Asynchronous Errors
To receive asynchronous errors, subscribe to PublishStatusEvent. For more information, see Get the Status of Asynchronous Platform Event Publish Operations (Beta).
Types of Platform Events
Defining Platform Events
- Below are the steps to create a custom Platform Event in Salesforce: 1. 1. In Setup, select Platform Eventsin the quick find. 2. 2. Click New Platform Event. 3. 3. Fill in the standard fields. 4. 4. Platform Events provide two types of publishing mechanisms. Publish after commit is used to publish the event only after the transaction is successfull...
Publishing Platform Events
- Below are several ways to publish a platform event after defining the same: 1. Publish Event Messages with Flows 2. Publish Event Messages with Processes 3. Publish Event Messages with Apex 4. Publish Event Messages via APIs Below is the code snippet to publish platform event with Apex:
Subscribing Platform Events
- Below are the several ways to receive the platform event: 1. Subscribe to Platform Event Messages with Flows 2. Subscribe to Platform Event Messages with Processes 3. Subscribe to Platform Event Notifications with Apex Triggers 4. Subscribe to Platform Event Notifications in a Lightning Component 5. Subscribe to Platform Event Notifications with CometD(Workbench)
Conclusion
- We hope you find this post helpful and will guide you to define, publish, and subscribe to platform events. To know more, don’t hesitate to connect with us. Emizentech, a Salesforce development company, is always there to serve you the best.