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OpenTelemetry API Bridgeedit

The Elastic APM OpenTelemetry bridge allows you to create Elastic APM Transactions and Spans, using the OpenTelemetry API. This allows users to utilize the Elastic APM agent’s automatic instrumentations, while keeping custom instrumentations vendor neutral.

If a span is created while there is no transaction active, it will result in an Elastic APM Transaction. Inner spans are mapped to Elastic APM Span.

Getting startededit

The first step in getting started with the OpenTelemetry bridge is to install the opentelemetry libraries:

pip install elastic-apm[opentelemetry]

Or if you already have installed elastic-apm:

pip install opentelemetry-api opentelemetry-sdk

Usageedit

from elasticapm.contrib.opentelemetry import Tracer

tracer = Tracer(__name__)
with tracer.start_as_current_span("test"):
    # Do some work

or

from elasticapm.contrib.opentelemetry import trace

tracer = trace.get_tracer(__name__)
with tracer.start_as_current_span("test"):
    # Do some work

Tracer and get_tracer() accept the following optional arguments:

  • elasticapm_client: an already instantiated Elastic APM client
  • config: a configuration dictionary, which will be used to instantiate a new Elastic APM client, e.g. {"SERVER_URL": "https://example.org"}. See configuration for more information.

The Tracer object mirrors the upstream interface on the OpenTelemetry Tracer object.

Caveatsedit

Not all features of the OpenTelemetry API are supported.

Processors, exporters, metrics, logs, span events, and span links are not supported.

Additionally, due to implementation details, the global context API only works when a span is included in the activated context, and tokens are not used. Instead, the global context works as a stack, and when a context is detached the previously-active context will automatically be activated.

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