grafana/docs/sources/packages_api/runtime/echosrv.md
Marcus Andersson cc3fc18076
Docs: enable packages reference docs for 7-beta (#23953)
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# -----------------------------------------------------------------------
# Do not edit this file. It is automatically generated by API Documenter.
# -----------------------------------------------------------------------
title = "EchoSrv"
keywords = ["grafana","documentation","sdk","@grafana/runtime"]
type = "docs"
+++
## EchoSrv interface
Used to send events to all the registered backends. This should be accessed via the [getEchoSrv()](./runtime/getechosrv.md) function. Will, by default, flush events to the backends every 10s or when the flush function is triggered.
<b>Signature</b>
```typescript
export interface EchoSrv
```
<b>Import</b>
```typescript
import { EchoSrv } from '@grafana/runtime';
```
<b>Methods</b>
| Method | Description |
| --- | --- |
| [addBackend(backend)](#addbackend-method) | Add a new echo backend to the list of backends that will receive events. |
| [addEvent(event, meta)](#addevent-method) | Call this to add event that will be sent to the echo backends upon next flush. |
| [flush()](#flush-method) | Call this to flush current events to the echo backends. |
### addBackend method
Add a new echo backend to the list of backends that will receive events.
<b>Signature</b>
```typescript
addBackend(backend: EchoBackend): void;
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| backend | <code>EchoBackend</code> | |
<b>Returns:</b>
`void`
### addEvent method
Call this to add event that will be sent to the echo backends upon next flush.
<b>Signature</b>
```typescript
addEvent<T extends EchoEvent>(event: Omit<T, 'meta'>, meta?: {}): void;
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| event | <code>Omit&lt;T, 'meta'&gt;</code> | Object containing event information. |
| meta | <code>{}</code> | Object that will extend/override the default meta object. |
<b>Returns:</b>
`void`
### flush method
Call this to flush current events to the echo backends.
<b>Signature</b>
```typescript
flush(): void;
```
<b>Returns:</b>
`void`