36 lines
942 B
JavaScript
36 lines
942 B
JavaScript
'use strict';
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const { MeterProvider } = require('@opentelemetry/sdk-metrics-base');
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const { PrometheusExporter } = require('@opentelemetry/exporter-prometheus');
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const exporter = new PrometheusExporter(
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{
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startServer: true,
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},
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() => {
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console.log(
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`prometheus scrape endpoint: http://localhost:${PrometheusExporter.DEFAULT_OPTIONS.port}${PrometheusExporter.DEFAULT_OPTIONS.endpoint}`,
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);
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},
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);
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const meter = new MeterProvider({
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exporter,
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interval: 1000,
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}).getMeter('example-prometheus');
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const requestCounter = meter.createCounter('requests', {
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description: 'Example of a Counter',
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});
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const upDownCounter = meter.createUpDownCounter('test_up_down_counter', {
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description: 'Example of a UpDownCounter',
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});
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const labels = { pid: process.pid, environment: 'staging' };
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setInterval(() => {
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requestCounter.bind(labels).add(1);
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upDownCounter.bind(labels).add(Math.random() > 0.5 ? 1 : -1);
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}, 1000);
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