Metrics Plugin for GraphQL Eventbus

Metrics plugin prometheus metrics for your GraphQL Eventbus. To use it, you must have installed prom-client required as a npm peer dependency.

``bash
npm i graphql-eventbus-metrics-plugin


Peer dependency


npm i prom-client
`

`typescript
import { MetricsPlugin } from 'graphql-eventbus-metrics-plugin'
const myBus = new MyBus({
...,
plugins: [MetricsPlugin()]
})
`

`typescript title="router.ts"
import { register } from "prom-client";
import * as express from "express";

const app = express();
app.get("/metrics", async (_, res) => {
res.set("Content-Type", register.contentType);
res.send(await register.metrics());
});
`

This plugins exposes the follwing metrics:

$3

The number of messages published without error

$3

The number of messages published that have encountered errors.

$3

The number of messages published that have encountered errors.

$3

The number of messages consumed that encountered an error

$3

The time to consume a message successfully

$3

The time to consume a message successfully since it was first published. We track this metrics using publishedAt field in the GraphQLEventbusMetadata`.

$3

The time it takes to publish a message in ms.