44 lines
1.5 KiB
JavaScript
44 lines
1.5 KiB
JavaScript
'use strict';
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// eslint-disable-next-line import/order
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const tracer = require('./tracer')('example-grpc-capitalize-client');
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const path = require('path');
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const grpc = require('grpc');
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const protoLoader = require('@grpc/proto-loader');
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const PROTO_PATH = path.join(__dirname, 'protos/defs.proto');
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const PROTO_OPTIONS = {
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keepCase: true, enums: String, defaults: true, oneofs: true,
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};
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const definition = protoLoader.loadSync(PROTO_PATH, PROTO_OPTIONS);
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const rpcProto = grpc.loadPackageDefinition(definition).rpc;
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function main() {
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const client = new rpcProto.Fetch('localhost:50051',
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grpc.credentials.createInsecure());
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const data = process.argv[2] || 'opentelemetry';
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console.log('> ', data);
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const span = tracer.startSpan('tutorialsClient.capitalize');
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tracer.withSpan(span, () => {
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client.capitalize({ data: Buffer.from(data) }, (err, response) => {
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if (err) {
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console.log('could not get grpc response');
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return;
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}
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console.log('< ', response.data.toString('utf8'));
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// display traceid in the terminal
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console.log(`traceid: ${span.context().traceId}`);
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span.end();
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});
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});
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// The process must live for at least the interval past any traces that
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// must be exported, or some risk being lost if they are recorded after the
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// last export.
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console.log('Sleeping 5 seconds before shutdown to ensure all records are flushed.');
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setTimeout(() => { console.log('Completed.'); }, 5000);
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}
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main();
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