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OpenTelemetry ​

To start using OpenTelemetry, install @elysiajs/opentelemetry and apply plugin to any instance.

typescript
import { Elysia } from 'elysia'
import { opentelemetry } from '@elysiajs/opentelemetry'

import { BatchSpanProcessor } from '@opentelemetry/sdk-trace-node'
import { OTLPTraceExporter } from '@opentelemetry/exporter-trace-otlp-proto'

new Elysia()
	.use(
		opentelemetry({
			spanProcessors: [
				new BatchSpanProcessor(
					new OTLPTraceExporter()
				)
			]
		})
	)

jaeger showing collected trace automatically

Elysia OpenTelemetry is will collect span of any library compatible OpenTelemetry standard, and will apply parent and child span automatically.

Usage ​

See opentelemetry for usage and utilities

Config ​

This plugin extends OpenTelemetry SDK parameters options.

Below is a config which is accepted by the plugin

autoDetectResources - boolean ​

Detect resources automatically from the environment using the default resource detectors.

default: true

contextManager - ContextManager ​

Use a custom context manager.

default: AsyncHooksContextManager

textMapPropagator - TextMapPropagator ​

Use a custom propagator.

default: CompositePropagator using W3C Trace Context and Baggage

metricReader - MetricReader ​

Add a MetricReader that will be passed to the MeterProvider.

views - View[] ​

A list of views to be passed to the MeterProvider.

Accepts an array of View-instances. This parameter can be used to configure explicit bucket sizes of histogram metrics.

instrumentations - (Instrumentation | Instrumentation[])[] ​

Configure instrumentations.

By default getNodeAutoInstrumentations is enabled, if you want to enable them you can use either metapackage or configure each instrumentation individually.

default: getNodeAutoInstrumentations()

resource - IResource ​

Configure a resource.

Resources may also be detected by using the autoDetectResources method of the SDK.

resourceDetectors - Array<Detector | DetectorSync> ​

Configure resource detectors. By default, the resource detectors are [envDetector, processDetector, hostDetector]. NOTE: In order to enable the detection, the parameter autoDetectResources has to be true.

If resourceDetectors was not set, you can also use the environment variable OTEL_NODE_RESOURCE_DETECTORS to enable only certain detectors, or completely disable them:

  • env
  • host
  • os
  • process
  • serviceinstance (experimental)
  • all - enable all resource detectors above
  • none - disable resource detection

For example, to enable only the env, host detectors:

bash
export OTEL_NODE_RESOURCE_DETECTORS="env,host"

sampler - Sampler ​

Configure a custom sampler. By default, all traces will be sampled.

serviceName - string ​

Namespace to be identify as.

spanProcessors - SpanProcessor[] ​

An array of span processors to register to the tracer provider.

traceExporter - SpanExporter ​

Configure a trace exporter. If an exporter is configured, it will be used with a BatchSpanProcessor.

If an exporter OR span processor is not configured programmatically, this package will auto setup the default otlp exporter with http/protobuf protocol with a BatchSpanProcessor.

spanLimits - SpanLimits ​

Configure tracing parameters. These are the same trace parameters used to configure a tracer.