Flask extension to format logs according to Google Cloud v2 Specification
Flask extension to format logs according to Google Cloud v2 Specification
Python log formatter for Google Cloud according to v2 specification using python-json-logger formatter
Inspired by Elixir's logger_json
pipenv install flask_google_cloud_logger
pip install flask_google_cloud_logger
import logging
from logging import config
from flask import Flask, request, g
from flask_google_cloud_logger import FlaskGoogleCloudLogger
LOG_CONFIG = {
"version": 1,
"formatters": {
"json": {
"()": "flask_google_cloud_logger.FlaskGoogleCloudFormatter",
"application_info": {
"type": "python-application",
"application_name": "Example Application"
},
"format": "[%(asctime)s] %(levelname)s in %(module)s: %(message)s"
}
},
"handlers": {
"json": {
"class": "logging.StreamHandler",
"formatter": "json"
}
},
"loggers": {
"root": {
"level": "INFO",
"handlers": ["json"]
},
"werkzeug": {
"level": "WARN", # Disable werkzeug hardcoded logger
"handlers": ["json"]
}
}
}
config.dictConfig(LOG_CONFIG) # load log config from dict
logger = logging.getLogger("root") # get root logger instance
app = Flask("test_app")
FlaskGoogleCloudLogger(app)
@app.route("/")
def hello_world():
return "Hello, World!"
@app.teardown_request #log request and response info after extension's callbacks
def log_request_time(_exception):
logger.info(
f"{request.method} {request.path} - Sent {g.response.status_code}" +
" in {g.request_time:.5f}ms")
Example output:
{"timestamp": "2018-11-04T22:07:42.687000Z", "severity": "INFO", "message": "GET / - Sent 200 in {g.request_time:.5f}ms", "labels": {"type": "python-application", "application_name": "Example Application", "client": {"user_agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.75 Safari/537.36", "ip": "127.0.0.1", "version": null}, "connection": {"method": "GET", "path": "/", "request_id": "afc4c6d5-5f30-4f02-b66a-e97e87841073", "status": 200}, "latency": 0.13828277587890625}, "metadata": {"userLabels": {}}, "sourceLocation": {"file": "test_app.py", "line": 52, "function": "log_request_time"}}
Thanks @thulio, @robsonpeixoto, @ramondelemos