39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
'use strict';
|
|
|
|
const api = require('@opentelemetry/api');
|
|
const tracer = require('./tracer')(('example-grpc-server'));
|
|
const grpc = require('grpc');
|
|
|
|
const messages = require('./helloworld_pb');
|
|
const services = require('./helloworld_grpc_pb');
|
|
|
|
const PORT = 50051;
|
|
|
|
/** Starts a gRPC server that receives requests on sample server port. */
|
|
function startServer() {
|
|
// Creates a server
|
|
const server = new grpc.Server();
|
|
server.addService(services.GreeterService, { sayHello });
|
|
server.bind(`0.0.0.0:${PORT}`, grpc.ServerCredentials.createInsecure());
|
|
console.log(`binding server on 0.0.0.0:${PORT}`);
|
|
server.start();
|
|
}
|
|
|
|
function sayHello(call, callback) {
|
|
const currentSpan = api.trace.getSpan(api.context.active());
|
|
// display traceid in the terminal
|
|
console.log(`traceid: ${currentSpan.spanContext().traceId}`);
|
|
const span = tracer.startSpan('server.js:sayHello()', {
|
|
parent: currentSpan,
|
|
kind: 1, // server
|
|
attributes: { key: 'value' },
|
|
});
|
|
span.addEvent(`invoking sayHello() to ${call.request.getName()}`);
|
|
const reply = new messages.HelloReply();
|
|
reply.setMessage(`Hello ${call.request.getName()}`);
|
|
callback(null, reply);
|
|
span.end();
|
|
}
|
|
|
|
startServer();
|