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# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License.
"""
An example to show an application using Opentelemetry logging sdk. Logging calls to the standard Python
logging library are tracked and telemetry is exported to application insights with the AzureMonitorLogExporter.
"""
import os
import logging
from opentelemetry.sdk._logs import (
LogEmitterProvider,
LoggingHandler,
get_log_emitter_provider,
set_log_emitter_provider,
)
from opentelemetry.sdk._logs.export import BatchLogProcessor
from azure.monitor.opentelemetry.exporter import AzureMonitorLogExporter
set_log_emitter_provider(LogEmitterProvider())
exporter = AzureMonitorLogExporter.from_connection_string(
os.environ["APPLICATIONINSIGHTS_CONNECTION_STRING"]
)
get_log_emitter_provider().add_log_processor(BatchLogProcessor(exporter))
# Attach LoggingHandler to namespaced logger
handler = LoggingHandler()
logger = logging.getLogger(__name__)
logger.addHandler(handler)
logger.setLevel(logging.NOTSET)
logger.warning("Hello World!")
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