Sampling at the application level via the SDK

Allowing applications to decide what to sample, provides a great amount of flexibility to application developers and operators, as these applications are the source of the tracing data. Samplers can be configured in OpenTelemetry as a property of the tracer provider. In the following code, a configure_tracer method configures the OpenTelemetry tracing pipeline and receives Sampler as a method argument. This method is used to obtain three different tracers, each with its own sampling configuration:

• ALWAYS_ON: A sampler that always samples.
• ALWAYS_OFF: A sampler that never samples.
• TraceIdRatioBased: A probability sampler, which in the example is configured to sample traces 50% of the time.

The code then produces a separate trace using each tracer to demonstrate how sampling impacts the output generated by ConsoleSpanExporter:

sample.py

from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk...