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Plugin Framework

Extend Nebula Logger with your own Apex or Flow automation that runs automatically after trigger events.

If you want to add your own automation to the included custom objects, you can leverage Apex or Flow to define “plugins” - the logger system will then automatically run the plugins after each trigger event (BEFORE_INSERT, BEFORE_UPDATE, AFTER_INSERT, AFTER_UPDATE, and so on). Currently, these objects are supported:

  • LogEntryEvent__e platform event
  • Log__c custom object
  • LogEntry__c custom object
  • LogEntryTag__c custom object
  • LoggerTag__c custom object
  • LoggerScenario__c custom object

This framework (currently in beta) makes it easy to build your own plugins, or deploy/install others’ prebuilt packages, without having to modify the logging system directly.

Build a plugin

Your Flow should be built as an auto-launched Flow with these parameters:

  1. Input parameter triggerOperationType - The name of the current trigger operation (such as BEFORE_INSERT, BEFORE_UPDATE, etc.)
  2. Input parameter triggerNew - The list of logger records being processed (Log__c or LogEntry__c records)
  3. Output parameter updatedTriggerNew - If your Flow makes any updates to the collection of records, you should return a record collection containing the updated records
  4. Input parameter triggerOld - The list of logger records as they exist in the database
// Implement LoggerPlugin.Triggerable:
public class ExampleTriggerablePlugin implements LoggerPlugin.Triggerable {
  public void execute(LoggerPlugin__mdt configuration, LoggerTriggerableContext input) {
    // Example: only run the plugin for Log__c records
    if (context.sobjectType != Schema.Log__c.SObjectType) {
      return;
    }

    List<Log__c> logs = (List<Log__c>) input.triggerNew;
    switch on input.triggerOperationType {
      when BEFORE_INSERT {
        for (Log__c log : logs) {
          log.Status__c = 'On Hold';
        }
      }
      when BEFORE_UPDATE {
        // TODO add before-update logic
      }
    }
  }
}

Configure the plugin

Once you’ve created your Apex or Flow plugin(s), you will also need to configure the plugin using custom metadata types:

Metadata type Purpose
LoggerSObjectHandlerPlugin__mdt Defines your plugin, including the plugin type (Apex or Flow) and the API name of your plugin’s Apex class or Flow
LoggerSObjectHandlerPluginParameter__mdt Defines any configurable parameters needed for your plugin, such as environment-specific URLs and other similar configurations

Adapted from the Nebula Logger wiki, © Jonathan Gillespie and contributors, MIT License.

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