使用python-flask通过Azure应用程序洞察轻松获取异常

Question

我尝试了下面的代码来获取https://learn.microsoft.com/en-us/azure/azure-monitor/app/opencensus-python

from opencensus.ext.azure.log_exporter import AzureLogHandler
logger = logging.getLogger(__name__)
# TODO: replace the all-zero GUID with your instrumentation key.
logger.addHandler(AzureLogHandler(
connection_string='InstrumentationKey=00000000-0000-0000-0000-000000000000')
)
properties = {'custom_dimensions': {'key_1': 'value_1', 'key_2': 'value_2'}}
# Use properties in exception logs
try:
result = 1 / 0  # generate a ZeroDivisionError
except Exception:
logger.exception('Captured an exception.', extra=properties)

它正在发挥作用。我能抓住例外。然而，我想问一下，是否有一种简单的方法可以在python烧瓶中自动捕获异常？由于我尝试了下面的代码，它只是给了我一个请求记录，而不是异常。

app = Flask(__name__)
app.logger.addHandler(file_handler)
handler = AzureEventHandler(
connection_string="InstrumentationKey={}".format(app.config['APPINSIGHTS_INSTRUMENTATIONKEY']))
handler.setFormatter(logging.Formatter(
'%(asctime)s %(levelname)s: %(message)s '
'[in %(pathname)s:%(lineno)d]'))
handler.setLevel(logging.ERROR)
app.logger.addHandler(handler)

感谢您帮助

Answer 1

您的代码应该如下所示。有关更多详细信息，您可以查看官方示例代码。

烧瓶"；待办事项；示例应用

import logging
import sys
from flask import Flask
sys.path.append('..')
from config import Config
from flask_sqlalchemy import SQLAlchemy
from opencensus.ext.azure import metrics_exporter
from opencensus.ext.azure.log_exporter import AzureLogHandler
from opencensus.ext.flask.flask_middleware import FlaskMiddleware
from opencensus.trace import config_integration
logger = logging.getLogger(__name__)
app = Flask(__name__)
app.config.from_object(Config)
db = SQLAlchemy(app)
# Import here to avoid circular imports
from app import routes  # noqa isort:skip
# Trace integrations for sqlalchemy library
config_integration.trace_integrations(['sqlalchemy'])
# Trace integrations for requests library
config_integration.trace_integrations(['requests'])
# FlaskMiddleware will track requests for the Flask application and send
# request/dependency telemetry to Azure Monitor
middleware = FlaskMiddleware(app)
# Processor function for changing the role name of the app
def callback_function(envelope):
envelope.tags['ai.cloud.role'] = "To-Do App"
return True
# Adds the telemetry processor to the trace exporter
middleware.exporter.add_telemetry_processor(callback_function)
# Exporter for metrics, will send metrics data
exporter = metrics_exporter.new_metrics_exporter(
enable_standard_metrics=False,
connection_string='InstrumentationKey=' + Config.INSTRUMENTATION_KEY)
# Exporter for logs, will send logging data
logger.addHandler(
AzureLogHandler(
connection_string='InstrumentationKey=' + Config.INSTRUMENTATION_KEY
)
)

if __name__ == '__main__':
app.run(host='localhost', port=5000, threaded=True, debug=True)