---
title: Status Hooks
description: Execute Workers code in reaction to Container status changes
image: https://edgetunnel-b2h.pages.dev/dev-products-preview.png
---

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# Status Hooks

Execute Workers code in reaction to Container status changes

When a Container starts, stops, becomes idle, and errors, it can trigger code execution in a Worker that has defined status hooks on the `Container` class. Refer to the [Container class lifecycle hooks](https://edgetunnel-b2h.pages.dev/containers/container-class/#lifecycle-hooks) for more details.

**TypeScript**

```ts
import { Container } from "@cloudflare/containers";


export class MyContainer extends Container {
  defaultPort = 4000;
  sleepAfter = "5m";


  override onStart() {
    console.log("Container successfully started");
  }


  override onStop(stopParams) {
    if (stopParams.exitCode === 0) {
      console.log("Container stopped gracefully");
    } else {
      console.log("Container stopped with exit code:", stopParams.exitCode);
    }


    console.log("Container stop reason:", stopParams.reason);
  }


  override async onActivityExpired() {
    console.log("Container became idle, stopping it now");
    await this.stop();
  }


  override onError(error: string) {
    console.log("Container error:", error);
  }
}
```

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```