This Apollo server plugin exposes an interface for instrumentation of query operation duration.
Callback for instrumentation will only be executed for successful operations.
This is an example when instrumenting with Prometheus.
import ApolloServerOperationDuration from 'apollo-server-plugin-operation-duration';
import { ApolloServer, gql } from 'apollo-server';
import { Histogram, exponentialBuckets } from 'prom-client';
const operationDurationHistogram = new Histogram({
name: 'operation_duration_histogram',
help: 'GraphQL query operation duration histogram',
labelNames: ['name'],
buckets: exponentialBuckets(100, 2, 8),
});
const server = new ApolloServer({
typeDefs: gql`
type Book {
title: String
author: String
}
type Query {
books: [Book]
}
`,
mocks: true,
mockEntireSchema: true,
plugins: [
ApolloServerOperationDuration({
callback: ({ operationName, operationDuration, parsingDuration, validationDuration, executionDuration }) => {
operationDurationHistogram.labels(operationName).observe(operationDuration);
},
})
],
});
server.listen().then(({ url }) => {
console.log(`🚀 Server ready at ${url}`);
});
