medium logging

sample.py

import logging
import requests
import json
from opentelemetry.instrumentation.logging import LoggingInstrumentor

metadata_server = "http://metadata/computeMetadata/v1/" 
metadata_flavor = {'Metadata-Flavor': 'Google'}
project_id = requests.get(
    metadata_server + 'project/project-id', headers=metadata_flavor).text

structured_format = {
    "message": "%(message)s",
    "severity": "%(levelname)s",
    "labels": {                                   
        "service_name": "%(otelServiceName)s",                                                                        
        "module": "%(module)s",
    },
    "logging.googleapis.com/sourceLocation": {
        "file": "%(filename)s",
        "line": "%(lineno)d",
        "function": "%(name)s"
    },
    "logging.googleapis.com/spanId": "%(otelSpanID)s",
    "logging.googleapis.com/trace": f'projects/{project_id}/traces/%(otelTraceID)s',
    # Set trace_sampled to true to enable link from cloud logging to cloud trace
    "logging.googleapis.com/trace_sampled": True,
}

LoggingInstrumentor().instrument(
    logging_format=json.dumps(structured_format),
    set_logging_format=True,
    log_level=logging.DEBUG,
)