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injector.ts
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injector.ts
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import {Inject} from '@nestjs/common';
import {getToken} from './utils';
/**
* StatsD Metric Injector
*
* This will help you inject statsd metrics into your controllers or any other classes.
*
* Remember you'll first need to create a provider for your metric,
*
* ```typescript
* import { Module } from "@nestjs/common";
* import { MetricsModule } from "@mists/nestjs-metrics";
* import { makeStatsdProvider } from "@mists/nestjs-metrics/dist/statsd";
*
* @Module({
* imports: [MetricsModule.register()],
* providers: [makeStatsdProvider('statsd_metric')],
* })
* export class AppModule {}
* ```
*
* then inject it into your class:
*
* ```typescript
* import { Controller } from "@nestjs/common";
* import { StatsDClient } from "statsd-client";
* import { InjectStatsdMetric } from "@mists/nestjs-metrics/dist/statsd";
*
* @Controller('/route')
* export class MetricsController {
* constructor(@InjectStatsdMetric('statsd_metric') protected metric: StatsDClient) {}
*
* @Get()
* public yourMetricMethod(): string {
* // ...
* this.metric.inc('name.space');
* // ...
* }
* }
* ```
*/
export function InjectStatsdMetric(
name: string,
): (target: object, key: string | symbol, index?: number | undefined) => void {
const token = getToken(name);
return Inject(token);
}