@uphold/opentelemetry-connect-node

OpenTelemetry instrumentation for @connectrpc/connect-node RPC client and server.

Installation

1npm install @uphold/opentelemetry-connect-node

Supported versions

• @connectrpc/connect-node versions ^2.0.0

Usage

Enable the instrumentation offered by this package, like so:

1const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
2const { registerInstrumentations } = require('@opentelemetry/instrumentation');
3const { ConnectNodeInstrumentation } = require('@uphold/opentelemetry-connect-node');
4
5const provider = new NodeTracerProvider({
6  spanProcessors: [new SimpleSpanProcessor(new ConsoleSpanExporter())]
7});
8
9provider.register();
10
11registerInstrumentations({
12  instrumentations: [new ConnectNodeInstrumentation()]
13});

Instrumentation options

The instrumentation accepts the following configuration:

Options	Type	Description
ignoreRequest	IgnoreRequestMatcher	The instrumentation will not trace any requests return true from the function.
metadataToSpanAttributes	MetadataToSpanAttributes	List of case insensitive metadata to convert to span attributes. Client and server (outgoing requests, incoming responses) metadata attributes will be converted to span attributes in the form of rpc.{rpc_system}{request/response}.metadata.metadata_key, e.g. rpc.grpc.response.metadata.date

Caveats

Non-unary requests will not be traced

Only unary requests will be traced. Server streaming, client streaming and bidirectional streaming are not supported due to a bug in context propagation for generator functions. Supposedly, there are workarounds but none of them worked. See https://github.com/open-telemetry/opentelemetry-js/issues/2951 and https://github.com/nodejs/node/issues/42237 for more details.

Tests

1npm test

License

Licensed under MIT.