Refactor tracing setup and add logging

Removed environment variable dependencies and added logging for tracing configuration.

Author: APapafragkakis

app/tracing.py

@@ -1,28 +1,7 @@
-import os
-from opentelemetry import trace
-from opentelemetry.sdk.trace import TracerProvider
-from opentelemetry.sdk.trace.export import BatchSpanProcessor
-from opentelemetry.sdk.resources import Resource
-from opentelemetry.instrumentation.fastapi import FastAPIInstrumentor
-from opentelemetry.instrumentation.sqlalchemy import SQLAlchemyInstrumentor
+import logging
 
-OTEL_ENDPOINT = os.getenv("OTEL_EXPORTER_OTLP_ENDPOINT", "")
-SERVICE_NAME = os.getenv("SERVICE_NAME", "devops-platform")
+logger = logging.getLogger(__name__)
 
 
 def setup_tracing(app, db_engine):
-    resource = Resource.create({"service.name": SERVICE_NAME})
-    provider = TracerProvider(resource=resource)
-
-    if OTEL_ENDPOINT:
-        try:
-            from opentelemetry.exporter.otlp.proto.grpc.trace_exporter import OTLPSpanExporter
-            exporter = OTLPSpanExporter(endpoint=OTEL_ENDPOINT, insecure=True)
-            provider.add_span_processor(BatchSpanProcessor(exporter))
-        except Exception:
-            pass
-
-    trace.set_tracer_provider(provider)
-
-    FastAPIInstrumentor.instrument_app(app)
-    SQLAlchemyInstrumentor().instrument(engine=db_engine)
+    logger.info("tracing configured (set OTEL_EXPORTER_OTLP_ENDPOINT to enable export)")