@142vip/egg-grpc-client

@142vip/egg-grpc-client

安装

# npm
npm install @142vip/egg-grpc-client
# pnpm
pnpm i @142vip/egg-grpc-client

配置

默认配置

const { defaultPluginConfig } = require('@142vip/egg')
const { exampleProto, GrpcConnectURI } = require('@142vip/grpc')
const { name: pkgName } = require('../package.json')

module.exports = {
  grpcClient: defaultPluginConfig(pkgName, {
    client: {
      connectUri: GrpcConnectURI.PORT_50001,
      protoPaths: [exampleProto],
    },
  }),
}

单客户端

const { exampleProto } = require('@142vip/egg-grpc-server/example/example-grpc')
const { GrpcConnectURI } = require('@142vip/grpc')

module.exports = {
  grpcClient: {
    client: {
      connectUri: GrpcConnectURI.PORT_50003,
      protoPaths: [exampleProto],
    },
  },
}

多客户端

const { exampleProto } = require('@142vip/egg-grpc-server/example/example-grpc')
const { GrpcConnectURI } = require('@142vip/grpc')

module.exports = {
  grpcClient: {
    clients: {
      example1: {
        connectUri: GrpcConnectURI.PORT_50001,
        protoPaths: [exampleProto],
      },
      example2: {
        connectUri: GrpcConnectURI.PORT_50002,
        protoPaths: [exampleProto],
      },
    },
  },
}

使用

获取实例

// 获取grpc客户端
const grpcClient = this.app.grpcClient

// 单客户端配置，获取实例
const defaultInstance = grpcClient.getInstance('default')

// 多客户端配置，获取实例
const example1Instance = grpcClient.getInstance('example1')
const example2Instance = grpcClient.getInstance('example2')

获取Service客户端

const exampleService = example1Instance.getService(exampleProtoServicePath)

调用方法

客户端非流式、服务端非流式

import { exampleProtoServicePath, GrpcExampleServiceMethod, sendGrpcRequest } from '@142vip/grpc'

// 调用ClientToServer方法，客户端非流式、服务端非流式
const response = await sendGrpcRequest(exampleServiceClient, GrpcExampleServiceMethod.ClientToServer, {
  name: GrpcExampleServiceMethod.ClientToServer
})
console.log(`${GrpcExampleServiceMethod.ClientToServer} response===>`, response)

客户端非流式、服务端流式

import { exampleProtoServicePath, GrpcExampleServiceMethod, sendGrpcRequest } from '@142vip/grpc'

// 调用ClientToServerStream方法，客户端非流式、服务端流式
const response = await sendGrpcRequest(exampleServiceClient, GrpcExampleServiceMethod.ClientToServerStream, {
  name: GrpcExampleServiceMethod.ClientToServerStream
})
console.log(`${GrpcExampleServiceMethod.ClientToServerStream} response===>`, response)

客户端流式、服务端非流式

import { exampleProtoServicePath, GrpcExampleServiceMethod, sendGrpcRequest } from '@142vip/grpc'

// 调用ClientStreamToServerStream方法，客户端流式、服务端流式
const response = await sendGrpcRequest(exampleServiceClient, GrpcExampleServiceMethod.ClientStreamToServerStream, {
  name: GrpcExampleServiceMethod.ClientStreamToServerStream
})
console.log(`${GrpcExampleServiceMethod.ClientStreamToServerStream} response===>`, response)

客户端流式、服务端流式

import { exampleProtoServicePath, GrpcExampleServiceMethod, sendGrpcRequest } from '@142vip/grpc'

// 调用ClientStreamToServerStream方法，客户端流式、服务端流式
const response = await sendGrpcRequest(exampleServiceClient, GrpcExampleServiceMethod.ClientStreamToServerStream, {
  name: GrpcExampleServiceMethod.ClientStreamToServerStream
})
console.log(`${GrpcExampleServiceMethod.ClientStreamToServerStream} response===>`, response)

基于sendGrpcRequest方法，可以很方面地实现GRPC的四种模式调用，同时支持async/await操作，在业务中可以直接使用try/catch捕获异常。

单元测试

• 客户端请求
• 单客户端测试
• 多客户端测试

参考

• egg-demo
• @142vip/grpc
• @142vip/egg

证书

MIT

Copyright (c) 2019-present, @142vip 储凡

仅供学习参考，商业使用请保留作者版权信息，作者不保证也不承担任何软件的使用风险。