How to use @opencensus/instrumentation-http - 4 common examples

function enableHttpPlugin (tracer) {
  // 1. Define node version
  const version = process.versions.node;

  // 2. Enable HTTP plugin
  httpPlugin.plugin.enable(http, tracer, version, null);
}

import {PrometheusStatsExporter} from '@opencensus/exporter-prometheus';
import {globalStats} from '@opencensus/core';
import {registerAllViews} from '@opencensus/instrumentation-http';
import {runMigrations} from './runMigrations';

const {sequelize} = require('@fbcnms/sequelize-models');
const logger = logging.getLogger(module);
const port = parseInt(process.env.PORT || 80);

// Configure metrics
const prometheusExporter = new PrometheusStatsExporter({
  startServer: true,
  logger,
});
globalStats.registerExporter(prometheusExporter);
registerAllViews(globalStats);

let jaegerExporter = null;
if (process.env.TELEMETRY_TRACE_EXPORTER == 'jaeger') {
  if (
    !process.env.JAEGER_AGENT_ENDPOINT &&
    !process.env.JAEGER_COLLECTOR_ENDPOINT
  ) {
    throw new Error(
      'When using TELEMETRY_TRACE_EXPORTER = "jaeger", you ' +
        'must set either JAEGER_AGENT_ENDPOINT or JAEGER_COLLECTOR_ENDPOINT',
    );
  }
  // Configure opencensus for jaeger
  const agentEndpoint = process.env.JAEGER_AGENT_ENDPOINT;
  const [agentHost, agentPort] = agentEndpoint
    ? agentEndpoint.split(':')

request.on('error', (err: Error) => {
        span.addAttribute(HttpPlugin.ATTRIBUTE_HTTP_ERROR_NAME, err.name);
        span.addAttribute(HttpPlugin.ATTRIBUTE_HTTP_ERROR_MESSAGE, err.message);

        span.end();
      });

request.on('error', (err: Error) => {
        span.addAttribute(HttpPlugin.ATTRIBUTE_HTTP_ERROR_NAME, err.name);
        span.addAttribute(HttpPlugin.ATTRIBUTE_HTTP_ERROR_MESSAGE, err.message);

        span.end();
      });