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@opentelemetry/instrumentation-http

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Readme

OpenTelemetry HTTP and HTTPS Instrumentation for Node.js

This module provides automatic instrumentation for http and https.

For automatic instrumentation see the @opentelemetry/sdk-trace-node package.

Installation

npm install --save @opentelemetry/instrumentation-http

Usage

OpenTelemetry HTTP Instrumentation allows the user to automatically collect trace data and export them to their backend of choice, to give observability to distributed systems.

To load a specific instrumentation (HTTP in this case), specify it in the Node Tracer's configuration.

const { HttpInstrumentation } = require('@opentelemetry/instrumentation-http');
const { ConsoleSpanExporter, SimpleSpanProcessor } = require('@opentelemetry/sdk-trace-base');
const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
const { registerInstrumentations } = require('@opentelemetry/instrumentation');

const provider = new NodeTracerProvider();

provider.addSpanProcessor(new SimpleSpanProcessor(new ConsoleSpanExporter()));
provider.register();

registerInstrumentations({
  instrumentations: [new HttpInstrumentation()],
});

See examples/http for a short example.

Http instrumentation Options

Http instrumentation has few options available to choose from. You can set the following:

Options	Type	Description
`applyCustomAttributesOnSpan`	`HttpCustomAttributeFunction`	Function for adding custom attributes
`requestHook`	`HttpRequestCustomAttributeFunction`	Function for adding custom attributes before request is handled
`responseHook`	`HttpResponseCustomAttributeFunction`	Function for adding custom attributes before response is handled
`startIncomingSpanHook`	`StartIncomingSpanCustomAttributeFunction`	Function for adding custom attributes before a span is started in incomingRequest
`startOutgoingSpanHook`	`StartOutgoingSpanCustomAttributeFunction`	Function for adding custom attributes before a span is started in outgoingRequest
`ignoreIncomingPaths`	`IgnoreMatcher[]`	Http instrumentation will not trace all incoming requests that match paths
`ignoreOutgoingUrls`	`IgnoreMatcher[]`	Http instrumentation will not trace all outgoing requests that match urls
`serverName`	`string`	The primary server name of the matched virtual host.
`requireParentforOutgoingSpans`	Boolean	Require that is a parent span to create new span for outgoing requests.
`requireParentforIncomingSpans`	Boolean	Require that is a parent span to create new span for incoming requests.

Useful links

For more information on OpenTelemetry, visit: https://opentelemetry.io/
For more about OpenTelemetry JavaScript: https://github.com/open-telemetry/opentelemetry-js
For help or feedback on this project, join us in GitHub Discussions

License

Apache 2.0 - See LICENSE for more information.