Merge pull request #632 from microsoft/PSL-US-26408

feat: Implementation Configurable Logging Control via Flag

Author: Roopan-Microsoft

infra/main.bicep

@@ -1500,6 +1500,9 @@ module webSite 'modules/web-sites.bicep' = {
           WEBSITES_CONTAINER_START_TIME_LIMIT: '1800' // 30 minutes, adjust as needed
           BACKEND_API_URL: 'https://${containerApp.outputs.fqdn}'
           AUTH_ENABLED: 'false'
+          AZURE_BASIC_LOGGING_LEVEL: 'INFO'
+          AZURE_PACKAGE_LOGGING_LEVEL: 'WARNING'
+          AZURE_LOGGING_PACKAGES: ''
         }
         // WAF aligned configuration for Monitoring
         applicationInsightResourceId: enableMonitoring ? applicationInsights!.outputs.resourceId : null

infra/main_custom.bicep

@@ -1856,6 +1856,9 @@ module webSite 'modules/web-sites.bicep' = {
           //WEBSITES_CONTAINER_START_TIME_LIMIT: '1800' // 30 minutes, adjust as needed
           BACKEND_API_URL: 'https://${containerApp.outputs.fqdn}'
           AUTH_ENABLED: 'false'
+          AZURE_BASIC_LOGGING_LEVEL: 'INFO'
+          AZURE_PACKAGE_LOGGING_LEVEL: 'WARNING'
+          AZURE_LOGGING_PACKAGES: ''
           ENABLE_ORYX_BUILD: 'True'
         }
         // WAF aligned configuration for Monitoring

src/backend/.env.sample

@@ -33,3 +33,11 @@ AZURE_AI_SEARCH_INDEX_NAME=
 AZURE_AI_SEARCH_ENDPOINT=
 AZURE_AI_SEARCH_API_KEY=
 BING_CONNECTION_NAME=
+
+# Basic application logging (default: INFO level)
+AZURE_BASIC_LOGGING_LEVEL=INFO
+# Azure package logging (default: WARNING level to suppress INFO)
+AZURE_PACKAGE_LOGGING_LEVEL=WARNING
+# Comma-separated list of specific logger names to configure (default: empty - no custom loggers)
+# Example: AZURE_LOGGING_PACKAGES=azure.identity.aio._internal,azure.monitor.opentelemetry.exporter.export._base
+AZURE_LOGGING_PACKAGES=

src/backend/app_kernel.py

@@ -60,23 +60,18 @@ async def lifespan(app: FastAPI):
         "No Application Insights Instrumentation Key found. Skipping configuration"
     )
 
-# Configure logging
-logging.basicConfig(level=logging.INFO)
-
-# Suppress INFO logs from 'azure.core.pipeline.policies.http_logging_policy'
-logging.getLogger("azure.core.pipeline.policies.http_logging_policy").setLevel(
-    logging.WARNING
-)
-logging.getLogger("azure.identity.aio._internal").setLevel(logging.WARNING)
-
-# # Suppress info logs from OpenTelemetry exporter
-logging.getLogger("azure.monitor.opentelemetry.exporter.export._base").setLevel(
-    logging.WARNING
-)
-
-logging.getLogger("opentelemetry.sdk").setLevel(
-    logging.ERROR
-)
+# Configure logging levels from environment variables
+logging.basicConfig(level=getattr(logging, config.AZURE_BASIC_LOGGING_LEVEL.upper(), logging.INFO))
+
+# Configure Azure package logging levels
+azure_level = getattr(logging, config.AZURE_PACKAGE_LOGGING_LEVEL.upper(), logging.WARNING)
+# Parse comma-separated logging packages
+if config.AZURE_LOGGING_PACKAGES:
+    packages = [pkg.strip() for pkg in config.AZURE_LOGGING_PACKAGES.split(",") if pkg.strip()]
+    for logger_name in packages:
+        logging.getLogger(logger_name).setLevel(azure_level)
+
+logging.getLogger("opentelemetry.sdk").setLevel(logging.ERROR)
 
 # Initialize the FastAPI app
 app = FastAPI(lifespan=lifespan)

src/backend/common/config/app_config.py

@@ -73,6 +73,11 @@ def __init__(self):
         # Azure Search settings
         self.AZURE_SEARCH_ENDPOINT = self._get_optional("AZURE_AI_SEARCH_ENDPOINT")
 
+        # Logging settings
+        self.AZURE_BASIC_LOGGING_LEVEL = self._get_optional("AZURE_BASIC_LOGGING_LEVEL", "INFO")
+        self.AZURE_PACKAGE_LOGGING_LEVEL = self._get_optional("AZURE_PACKAGE_LOGGING_LEVEL", "WARNING")
+        self.AZURE_LOGGING_PACKAGES = self._get_optional("AZURE_LOGGING_PACKAGES")
+
         # Optional MCP server endpoint (for local MCP server or remote)
         # Example: http://127.0.0.1:8000/mcp
         self.MCP_SERVER_ENDPOINT = self._get_optional("MCP_SERVER_ENDPOINT")