> For the complete documentation index, see [llms.txt](https://blueeast.gitbook.io/bluerain-os/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://blueeast.gitbook.io/bluerain-os/guides/filters/known-filters.md).

# Known Filters

These are the known callback hooks in the system:

* [System App](/bluerain-os/guides/filters/known-filters.md#system-app)
  * [bluerain.system.app](/bluerain-os/guides/filters/known-filters.md#bluerainsystemapp)
  * [bluerain.system.app.schema](/bluerain-os/guides/filters/known-filters.md#bluerainsystemappschema)
  * [bluerain.system.routes](/bluerain-os/guides/filters/known-filters.md#bluerainsystemroutes)
* [System Lifecycle Events](/bluerain-os/guides/filters/known-filters.md#system-lifecycle-events)
  * [bluerain.system.boot.start](/bluerain-os/guides/filters/known-filters.md#bluerainsystembootstart)
  * [bluerain.system.configurations.loaded](/bluerain-os/guides/filters/known-filters.md#bluerainsystemconfigurationsloaded)
  * [bluerain.system.components.registered](/bluerain-os/guides/filters/known-filters.md#bluerainsystemcomponentsregistered)
  * [bluerain.system.plugins.registered](/bluerain-os/guides/filters/known-filters.md#bluerainsystempluginsregistered)
  * [bluerain.system.plugins.initialized](/bluerain-os/guides/filters/known-filters.md#bluerainsystempluginsinitialized)
  * [bluerain.system.apps.registered](/bluerain-os/guides/filters/known-filters.md#bluerainsystemappsregistered)
  * [bluerain.system.apps.initialized](/bluerain-os/guides/filters/known-filters.md#bluerainsystemappsinitialized)
  * [bluerain.system.initialized](/bluerain-os/guides/filters/known-filters.md#bluerainsysteminitialized)
  * [bluerain.system.boot.end](/bluerain-os/guides/filters/known-filters.md#bluerainsystembootend)

## System App

### bluerain.system.app

This hook gives the ability to modify the main System App component. This can be used to do things like wrapping the SystemApp in a HOC.

**Parameters:**

| Name      | Type            | Description                    |
| --------- | --------------- | ------------------------------ |
| SystemApp | React.Component | The main system app component. |

**Returns:**

| Name      | Type            | Description                    |
| --------- | --------------- | ------------------------------ |
| SystemApp | React.Component | The main system app component. |

**Example:**

This example wraps the System App with a Redux provider by using a `withRedux` higher order component (HOC).

```javascript
import BR from '@blueeast/bluerain-os';
import withRedux from './withRedux';

BR.Filters.set(
    'bluerain.system.app','AddReduxToSystemApp', 
    (App) => {
        return withRedux(App);
    }
);
```

### bluerain.system.app.schema

If you would rather modify the structure of the SystemApp itself, you can hook into it's JSON schema right before it is converted into a React Component at runtime.

**Parameters:**

| Name   | Type   | Description                                                                                                                                                       |
| ------ | ------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| schema | Object | This is the json schema structure of the system app. This schema is passed to the `parseJsonSchema` method to generate react components after callback execution. |

**Returns:**

| Name   | Type   | Description                                                                                                                                                       |
| ------ | ------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| schema | Object | This is the json schema structure of the system app. This schema is passed to the `parseJsonSchema` method to generate react components after callback execution. |

### bluerain.system.routes

This hook gives the ability to modify system routes JSON schema. This is very useful for adding or modifying pages and routes.

**Parameters:**

| Name   | Type   | Description                                                                                                                                                          |
| ------ | ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| routes | Object | This is the json schema structure of the system routes. This schema is passed to the `parseJsonSchema` method to generate react components after callback execution. |

**Returns:**

| Name   | Type   | Description                                                                                                                                                          |
| ------ | ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| routes | Object | This is the json schema structure of the system routes. This schema is passed to the `parseJsonSchema` method to generate react components after callback execution. |

## System Lifecycle Events

The following system lifecycle events are listed in the sequence of their execution.

### bluerain.system.boot.start

This hook is executed at the start of the boot process.

### bluerain.system.configurations.loaded

This hook is executed after all configurations are loaded.

### bluerain.system.components.registered

This hook is executed when all system react components are registered.

### bluerain.system.plugins.registered

This hook is executed when all plugins are registered.

### bluerain.system.plugins.initialized

This hook is executed when all plugins are initialized.

### bluerain.system.apps.registered

This hook is executed when all apps are registered.

### bluerain.system.apps.initialized

This hook is executed when all apps are initialized.

### bluerain.system.initialized

This hook is executed when initialization process is complete.

### bluerain.system.boot.end

This hook is executed at the end of the boot process.