mirror of https://github.com/grpc/grpc-node.git
98 lines
2.8 KiB
JavaScript
98 lines
2.8 KiB
JavaScript
/*
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*
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* Copyright 2025 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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const grpc = require('@grpc/grpc-js');
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const protoLoader = require('@grpc/proto-loader');
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const parseArgs = require('minimist');
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var PROTO_PATH = __dirname + '/../protos/helloworld.proto';
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const packageDefinition = protoLoader.loadSync(
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PROTO_PATH,
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{keepCase: true,
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longs: String,
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enums: String,
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defaults: true,
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oneofs: true
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});
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var helloProto = grpc.loadPackageDefinition(packageDefinition).helloworld;
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function serverBindPort(server, port) {
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return new Promise((resolve, reject) => {
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server.bindAsync(port, grpc.ServerCredentials.createInsecure(), (error, port) => {
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if (error) {
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reject(error);
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} else {
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resolve(port);
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}
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})
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});
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}
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const addressString = 'ipv4:///127.0.0.1:10001,127.0.0.1:10002,127.0.0.1:10003';
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function callSayHello(client, name) {
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return new Promise((resolve, reject) => {
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const deadline = new Date();
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deadline.setMilliseconds(deadline.getMilliseconds() + 150);
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client.sayHello({name}, {deadline}, (error, response) => {
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if (error) {
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reject(error);
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} else {
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resolve(response);
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}
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});
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});
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}
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async function main() {
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const argv = parseArgs(process.argv.slice(2), {
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string: ['addr', 'name'],
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default: {addr: 'localhost:50051', name: 'world'}
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});
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// Set up the server serving channelz service.
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const channelzServer = new grpc.Server();
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grpc.addAdminServicesToServer(channelzServer);
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await serverBindPort(channelzServer, argv.addr);
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const roundRobinServiceConfig = {
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methodConfig: [],
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loadBalancingConfig: [{ round_robin: {} }]
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};
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const client = new helloProto.Greeter(addressString, grpc.credentials.createInsecure(), {'grpc.service_config': JSON.stringify(roundRobinServiceConfig)});
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// Contact the server and print out its response
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// Make 100 SayHello RPCs
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for (let i = 0; i < 100; i++) {
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try {
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const response = await callSayHello(client, argv.name);
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console.log(`Greeting: ${response.message}`);
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} catch (e) {
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console.log(`could not greet: ${e.message}`);
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}
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}
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// Unless you exit the program (e.g. CTRL+C), channelz data will be available for querying.
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// Users can take time to examine and learn about the info provided by channelz.
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setInterval(() => {}, 10000);
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}
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main();
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