opentelemetry-instrumentation-keystonemiddleware 0.9.0

OpenStack keystonemiddleware module instrumentation for OpenTelemetry

OpenTelemetry keystonemiddleware instrumentation

Instruments the keystonemiddleware auth_token WSGI middleware that OpenStack services mount in front of their request pipeline.

It wraps keystonemiddleware.auth_token.BaseAuthProtocol.process_request -- the single method through which the stock AuthProtocol and any subclass validate the request's bearer token(s) -- so every authentication produces a span:

• the outcome: whether a user and/or service token was present and accepted;
• for accepted user tokens, the resolved identity (user.id, user.name, user.roles) and OpenStack scope (openstack.project_id, openstack.project_name, openstack.domain_id).

Because auth_token is usually the first middleware to see an inbound request, it also continues a distributed trace: when no span is already active the instrumentor extracts the W3C trace context from the incoming headers and opens a SERVER span, so a trace started by an instrumented client (for example the OpenStack SDK) carries on into the service. When a span is already active the authentication span is nested under it as INTERNAL.

Installation

pip install opentelemetry-instrumentation-keystonemiddleware

Usage

from opentelemetry.instrumentation.keystonemiddleware import (
    KeystoneMiddlewareInstrumentor,
)

KeystoneMiddlewareInstrumentor().instrument()