In Kozen, the modules are used as independent tools. The Triggers module becomes a solution designed to provide support for Self-Hosted Triggers in a simple way, whether you're using MongoDB Atlas, Enterprise Advanced, or Community Edition. This helps streamline the process of managing triggers across different MongoDB deployments.
Kozen can run MongoDB Change Stream based triggers on your own infrastructure. If you’ve used MongoDB Atlas Triggers, think of this as a self‑hosted alternative: you write a small JavaScript file (the delegate) that exports simple functions per operation, and Kozen wires everything up to stream change events into your code.
Atlas context: MongoDB Atlas provides a fully managed Triggers service. Kozen offers a similar capability you can run anywhere (local, on‑premises, cloud), while keeping your logic in a single, easy‑to‑maintain JS file.
Quick checklist:
- Install Kozen.
- Write the delegate with
insert/update/delete/replaceand optionalon/default. - Fill
.envwithKOZEN_TRIGGER_*settings. - Start the service (see step 2 below) and verify logs.
For better understanding, refer to the documentation here: documentation.