pytest_otel

Features

pytest-otel plugin for reporting OpenTelemetry spans of tests executed.

OpenTelemetry

Requirements

• opentelemetry-api
• opentelemetry-exporter-otlp
• opentelemetry-sdk
• pytest

Installation

You can install "pytest-otel" via pip or using the setup.py script.

pip install pytest-otel

Usage

pytest_otel is configured by adding some parameters to the pytest command line. Below are the descriptions:

• --otel-endpoint: URL for the OpenTelemetry server. (Required). Env variable: OTEL_EXPORTER_OTLP_ENDPOINT
• --otel-headers: Additional headers to send (i.e.: key1=value1,key2=value2). Env variable: OTEL_EXPORTER_OTLP_HEADERS
• --otel-service-name: Name of the service. Env variable: OTEL_SERVICE_NAME
• --otel-session-name: Name for the main span.
• --otel-traceparent: Trace parent ID. Env variable: TRACEPARENT. See https://www.w3.org/TR/trace-context-1/#trace-context-http-headers-format
• --otel-insecure: Disables TLS. Env variable: OTEL_EXPORTER_OTLP_INSECURE

pytest --otel-endpoint https://otelcollector.example.com:4317 \
       --otel-headers "authorization=Bearer ASWDCcCRFfr" \
       --otel-service-name pytest_otel \
       --otel-session-name='My_Test_cases' \
       --otel-traceparent=00-0af7651916cd43dd8448eb211c80319c-b7ad6b7169203331-01 \
       --otel-insecure=False

IMPORTANT: If you use --otel-headers the transaction metadata might expose those arguments with their values. In order to avoid any credentials to be exposed, it's recommended to use the environment variables. For instance, given the above example, a similar one with environment variables can be seen below:

OTEL_EXPORTER_OTLP_ENDPOINT=https://apm.example.com:8200 \
OTEL_EXPORTER_OTLP_HEADERS="authorization=Bearer ASWDCcCRFfr" \
OTEL_SERVICE_NAME=pytest_otel \
TRACEPARENT=00-0af7651916cd43dd8448eb211c80319c-b7ad6b7169203331-01 \
OTEL_EXPORTER_OTLP_INSECURE=False \
pytest --otel-session-name='My_Test_cases'

Demos

• Jaeger
• Elastic Stack

License

Distributed under the terms of the Apache License Version 2.0_ license, "pytest-otel" is free and open source software