singleton_trace_provider

singleton_tracer_provider.py

from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchSpanExporter

class TracerSingleton:
  """
  Singleton class to provide the OpenTelemetry tracer object.
  """

  _instance = None

  def __new__(cls):
    """
    Ensures only one instance of the TracerSingleton is created.
    """
    if not cls._instance:
      cls._instance = super().__new__(cls)
      cls._instance._tracer_provider = TracerProvider()
      # Configure your span exporter here (e.g., Jaeger, Zipkin)
      cls._instance._tracer_provider.add_span_exporter(
          BatchSpanExporter(endpoint="http://localhost:9411/api/v2/spans")
      )
    return cls._instance

  def get_tracer(self, instrument_name):
    """
    Returns the OpenTelemetry tracer object.
    """
    return trace.get_tracer(__name__, provider=self._tracer_provider)

# Example usage
tracer_singleton = TracerSingleton()
tracer = tracer_singleton.get_tracer("my_instrument")

# Use the tracer object for instrumentation
with tracer.start_as_current_span("my_operation_name"):
  # Your application logic here
  pass