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setup.js
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setup.js
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'use strict';
const opentelemetry = require('@opentelemetry/core');
const { NodeTracer } = require('@opentelemetry/node');
const { SimpleSpanProcessor } = require('@opentelemetry/tracing');
const { JaegerExporter } = require('@opentelemetry/exporter-jaeger');
const { ZipkinExporter } = require('@opentelemetry/exporter-zipkin');
const EXPORTER = process.env.EXPORTER || '';
function setupTracerAndExporters(service) {
const tracer = new NodeTracer({
plugins: {
grpc: {
enabled: true,
// if it can't find the module, put the absolute path since the packages are not published yet
path: '@opentelemetry/plugin-grpc'
}
}
});
let exporter;
if (EXPORTER.toLowerCase().startsWith('z')) {
exporter = new ZipkinExporter({
serviceName: service,
});
} else {
exporter = new JaegerExporter({
serviceName: service,
});
}
tracer.addSpanProcessor(new SimpleSpanProcessor(exporter));
// Initialize the OpenTelemetry APIs to use the BasicTracer bindings
opentelemetry.initGlobalTracer(tracer);
}
exports.setupTracerAndExporters = setupTracerAndExporters;