Helldragon67
7027444602
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57 lines
2.1 KiB
Python
57 lines
2.1 KiB
Python
"""Sets up global logging configuration for the application."""
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import logging
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import os
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logger = logging.getLogger(__name__)
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def configure_logging():
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"""
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Called at startup of a FastAPI application instance to setup logging. Depending on the environment, it will log to stdout or to Loki.
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"""
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is_debug = os.getenv('DEBUG', "false") == "true"
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is_kubernetes = os.getenv('KUBERNETES_SERVICE_HOST') is not None
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if is_kubernetes:
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# in that case we want to log to stdout and also to loki
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from loki_logger_handler.loki_logger_handler import LokiLoggerHandler
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loki_url = os.getenv('LOKI_URL')
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if loki_url is None:
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raise ValueError("LOKI_URL environment variable is not set")
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loki_handler = LokiLoggerHandler(
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url = loki_url,
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labels = {'app': 'anyway', 'environment': 'staging' if is_debug else 'production'}
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)
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logger.info(f"Logging to Loki at {loki_url} with {loki_handler.labels} and {is_debug=}")
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logging_handlers = [loki_handler, logging.StreamHandler()]
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logging_level = logging.DEBUG if is_debug else logging.INFO
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# silence the chatty logs loki generates itself
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logging.getLogger('urllib3.connectionpool').setLevel(logging.WARNING)
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# no need for time since it's added by loki or can be shown in kube logs
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logging_format = '%(name)s - %(levelname)s - %(message)s'
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else:
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# if we are in a debug (local) session, set verbose and rich logging
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from rich.logging import RichHandler
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logging_handlers = [RichHandler()]
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logging_level = logging.DEBUG if is_debug else logging.INFO
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logging_format = '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
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logging.basicConfig(
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level = logging_level,
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format = logging_format,
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handlers = logging_handlers
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)
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# also overwrite the uvicorn loggers
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logging.getLogger('uvicorn').handlers = logging_handlers
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logging.getLogger('uvicorn.access').handlers = logging_handlers
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logging.getLogger('uvicorn.error').handlers = logging_handlers
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