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multi_exporter.js
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multi_exporter.js
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const opentelemetry = require('@opentelemetry/core');
const { BasicTracer, BatchSpanProcessor, SimpleSpanProcessor } = require('@opentelemetry/tracing');
const { JaegerExporter } = require('@opentelemetry/exporter-jaeger');
const { ZipkinExporter } = require('@opentelemetry/exporter-zipkin');
const { CollectorExporter } = require('@opentelemetry/exporter-collector');
const tracer = new BasicTracer();
const zipkinExporter = new ZipkinExporter({serviceName: 'basic-service'});
const jaegerExporter = new JaegerExporter({
serviceName: 'basic-service',
});
const collectorExporter = new CollectorExporter({serviceName: 'basic-service'});
// It is recommended to use this BatchSpanProcessor for better performance
// and optimization, especially in production.
tracer.addSpanProcessor(new BatchSpanProcessor(zipkinExporter, {
bufferSize: 10 // This is added for example, default size is 100.
}));
// It is recommended to use SimpleSpanProcessor in case of Jaeger exporter as
// it's internal client already handles the spans with batching logic.
tracer.addSpanProcessor(new SimpleSpanProcessor(jaegerExporter));
tracer.addSpanProcessor(new SimpleSpanProcessor(collectorExporter));
// Initialize the OpenTelemetry APIs to use the BasicTracer bindings
opentelemetry.initGlobalTracer(tracer);
// Create a span. A span must be closed.
const span = opentelemetry.getTracer().startSpan('main');
for (let i = 0; i < 10; i++) {
doWork(span);
}
// Be sure to end the span.
span.end();
// flush and close the connection.
zipkinExporter.shutdown();
jaegerExporter.shutdown();
collectorExporter.shutdown();
function doWork(parent) {
// Start another span. In this example, the main method already started a
// span, so that'll be the parent span, and this will be a child span.
const span = opentelemetry.getTracer().startSpan('doWork', {
parent: parent
});
// simulate some random work.
for (let i = 0; i <= Math.floor(Math.random() * 40000000); i++) { }
// Set attributes to the span.
span.setAttribute('key', 'value');
// Annotate our span to capture metadata about our operation
span.addEvent('invoking doWork').end();
}