In Dynamics 365, when a plugin is run, it executes based on a pipeline execution model.
Plugins can be triggered by:
- A user action in the Dynamics 365 user interface, such as retrieving a record
- Events triggered by the Organization Service or the WebAPI, such as retrieving a record
Post-Operation events in the pipeline are processed either:
- synchronously – these plugins are are executed immediately and run in a specific order
- asynchronously – these plugins are executed by the Queue Agent and run later by the async service
Other events are processed synchronously.
The event pipeline is as following:
| Event | Stage name | Stage number | Description | Sync/Async |
|---|---|---|---|---|
| Pre-Event | Pre-validation | 10 | Executes before the main system operation and outside the database transaction. | Sync |
| Pre-Event | Pre-operation | 20 | Executes before the main system operation and executed within the database transaction. | Sync |
| Platform Core Operation | MainOperation | 30 | This is the actual platform operation. No plugins registered here. | |
| Post-Event | Post-operation | 40 | Executes after the main operation and within the database transaction (if sync). | Sync and Async |
Plug-ins that execute during the database transaction and pass an exception back to the platform cancel the core operation.
The pipeline is detailed here.
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[…] can see if we run this in the debugger, the Execution Pipeline stage is 10 (pre-event, pre-validation). As this executes outside the database, the IsInTransaction is […]