Setup using Phoenix OTEL

phoenix.otel is a lightweight wrapper around OpenTelemetry primitives with Phoenix-aware defaults.

pip install arize-phoenix-otel

These defaults are aware of environment variables you may have set to configure Phoenix:

• PHOENIX_COLLECTOR_ENDPOINT

• PHOENIX_PROJECT_NAME

• PHOENIX_CLIENT_HEADERS

• PHOENIX_API_KEY

• PHOENIX_GRPC_PORT

Quickstart: phoenix.otel.register

The phoenix.otel module provides a high-level register function to configure OpenTelemetry tracing by setting a global TracerProvider. The register function can also configure headers and whether or not to process spans one by one or by batch.

from phoenix.otel import register
tracer_provider = register(
    project_name="default", # sets a project name for spans
    batch=True, # uses a batch span processor
    auto_instrument=True, # uses all installed OpenInference instrumentors
)

Phoenix Authentication

If the PHOENIX_API_KEY environment variable is set, register will automatically add an authorization header to each span payload.

Configuring the collector endpoint

There are two ways to configure the collector endpoint:

• Using environment variables

• Using the endpoint keyword argument

Using environment variables

If you’re setting the PHOENIX_COLLECTOR_ENDPOINT environment variable, register will automatically try to send spans to your Phoenix server using gRPC.

GRPC

# export PHOENIX_COLLECTOR_ENDPOINT=https://your-phoenix.com:6006

from phoenix.otel import register

# sends traces to https://your-phoenix.com:4317
tracer_provider = register()

Specifying the endpoint directly

When passing in the endpoint argument, you must specify the fully qualified endpoint. If the PHOENIX_GRPC_PORT environment variable is set, it will override the default gRPC port.

HTTP

The HTTP transport protocol is inferred from the endpoint

from phoenix.otel import register
tracer_provider = register(endpoint="http://localhost:6006/v1/traces")

Additional configuration

register can be configured with different keyword arguments:

• project_name: The Phoenix project name

  • or use PHOENIX_PROJECT_NAME env. var

• headers: Headers to send along with each span payload

  • or use PHOENIX_CLIENT_HEADERS env. var

• batch: Whether or not to process spans in batch

from phoenix.otel import register
tracer_provider = register(
    project_name="otel-test",
    headers={"Authorization": "Bearer TOKEN"},
    batch=True,
)

Instrumentation

Once you’ve connected your application to your Phoenix instance using phoenix.otel.register, you need to instrument your application. You have a few options to do this:

1. Using OpenInference auto-instrumentors. If you’ve used the auto_instrument flag above, then any instrumentor packages in your environment will be called automatically. For a full list of OpenInference packages, see /phoenix/integrations

2. Using Phoenix Decorators.

3. Using Base OTEL.