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https://github.com/addityasingh/graphql-lightstep-middleware

GraphQL middleware to instrument resolvers with opentracing traces for lightstep collector
https://github.com/addityasingh/graphql-lightstep-middleware

graphql graphql-lightstep-middleware graphql-middleware lightstep lightstep-collector middleware opentracing opentracing-traces

Last synced: 7 days ago
JSON representation

GraphQL middleware to instrument resolvers with opentracing traces for lightstep collector

Host: GitHub
URL: https://github.com/addityasingh/graphql-lightstep-middleware
Owner: addityasingh
License: mit
Created: 2020-01-25T22:06:22.000Z (over 4 years ago)
Default Branch: master
Last Pushed: 2020-12-22T14:07:27.000Z (over 3 years ago)
Last Synced: 2024-06-20T03:28:36.005Z (10 days ago)
Topics: graphql, graphql-lightstep-middleware, graphql-middleware, lightstep, lightstep-collector, middleware, opentracing, opentracing-traces
Language: TypeScript
Size: 272 KB
Stars: 6
Watchers: 2
Forks: 0
Open Issues: 1
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md

Lists

awesome-graphql - graphql-lightstep-middleware - GraphQL middleware to instrument resolvers with `lightstep` traces (Libraries / JavaScript Libraries)
awesome-graphql - graphql-lightstep-middleware - GraphQL middleware to instrument resolvers with `lightstep` traces (Libraries / JavaScript Libraries)

README

        # graphql-lightstep-middleware

[![NPM](https://nodei.co/npm/graphql-lightstep-middleware.png)](https://npmjs.org/package/graphql-lightstep-middleware)

GraphQL middleware to instrument and augment resolvers with opentracing traces for lightstep collector

![build](https://github.com/addityasingh/graphql-lightstep-middleware/workflows/build/badge.svg)

[![downloads](https://img.shields.io/npm/dt/graphql-lightstep-middleware.svg)](https://npmjs.org/package/graphql-lightstep-middleware?cacheSeconds=60)

[![version](https://img.shields.io/npm/v/graphql-lightstep-middleware.svg)](https://npmjs.org/package/graphql-lightstep-middleware?cacheSeconds=3600)

## Table of contents

- [Getting started](#getting-started)

- [API](#api)

- [Contributing](#contributing)

  - [Code of Conduct](#code-of-conduct)

  - [Contributing](#contributing)

  - [Good first issues](#good-first-issues)

- [License](#licence)

## Getting started

1. Install the package and graphql-middleware

```sh

yarn add graphql-lightstep-middleware

yarn add graphql-middleware

```

2. Create the lightstep global tracer

```javascript

import { initGlobalTracer } from "opentracing";

import { Tracer as LightstepTracer } from "lightstep-tracer";

// Initialise the lightstep tracer

initGlobalTracer(new LightstepTracer({

  access_token: "developer",

  component_name: "graphql-lightstep-middleware",

  collector_host: "localhost",

  collector_port: 8360,

  plaintext: true,

  collector_encryption: "none"

} as any));

```

3. Configure the middleware

```javascript

import graphqlLightstepMiddleware from "graphql-lightstep-middleware";

// create the lightstep-graphql-middleware

const lightstepMiddleware = graphqlLightstepMiddleware({

  tracer: globalTracer()

});

```

4. Apply the middleware to the schema

```javascript

import express from "express";

import graphqlExpressHttp from "express-graphql";

import { applyMiddleware } from "graphql-middleware";

import { makeExecutableSchema } from "graphql-tools";

// Construct a schema, using GraphQL schema language

const typeDefs = `

  type Query {

    hello(name: String): String

  }

`;

const resolvers = {

  Query: {

    hello: (parent, args, context) => {

      const result = `Hello ${args.name ? args.name : "world"}!`;

      // The rootSpan is available in the context now

      context.tracing.rootSpan.addTags({

        helloResolver: result

      });

      return result;

    }

  }

};

// apply the middleware to the schema

const schema = applyMiddleware(

  makeExecutableSchema({ typeDefs, resolvers }),

  lightstepMiddleware

);

// Use the schema in your graphql server

const app = express();

app.use(

  "/graphql",

  graphqlExpressHttp({

    schema: schema,

    rootValue: resolvers,

    graphiql: true

  })

);

```

## API

### middleware = graphqlLightstepMiddleware([options])

- `options`

  - `tracer`: An optional `lightstep` tracer object

  - `hooks`: Lost of `PreResolve` and `PostResolve` hooks

Refer the [examples](./examples) for more usage examples

## Contributing

`graphql-lightstep-middleware` package intends to support contribution and support and thanks the open source community to making it better. Read below to learn how you can improve this repository and package

### Code of Conduct

Please check the [CODE OF CONDUCT](./CODE_OF_CONDUCT) which we have in place to ensure safe and supportive environment for contributors

### Contributing

Feel free to create issues and bugs in the issues section using issues and bugs template. Please also ensure that there are not existing issues created on the same topic

### Good first issues

Please check issues labeled [#good-first-issues](https://github.com/addityasingh/graphql-lightstep-middleware/labels/good%20first%20issue) under the issues section

## Licence

`graphql-lightstep-middleware` uses [MIT License](./LICENSE)