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Flask Tracing
Learn how to set up highlight.io tracing for your Flask app.
1
Setup your frontend Highlight snippet with tracingOrigins.
Make sure that you followed the fullstack mapping guide.
H.init("<YOUR_PROJECT_ID>", {
tracingOrigins: ['localhost', 'example.myapp.com/backend'],
networkRecording: {
enabled: true,
recordHeadersAndBody: true,
},
});
2
Install the highlight-io python package.
Download the package from pypi and save it to your requirements. If you use a zip or s3 file upload to publish your function, you will want to make sure highlight-io is part of the build.
poetry add highlight-io[Flask]# or with pip
pip install highlight-io[Flask]3
Initialize the Highlight SDK.
Setup the SDK to with the Flask integration.
from flask import Flask
import highlight_io
from highlight_io.integrations.flask import FlaskIntegration
app = Flask(__name__)
# `instrument_logging=True` sets up logging instrumentation.
# if you do not want to send logs or are using `loguru`, pass `instrument_logging=False`
H = highlight_io.H(
"<YOUR_PROJECT_ID>",
integrations=[FlaskIntegration()],
instrument_logging=True,
service_name="my-flask-app",
service_version="git-sha",
environment="production",
)4
Verify your installation.
Check that your installation is valid by visiting one your Flask views in your browser.
@app.route("/hello")
def hello():
return "<h1>Hello world</h1>"
if __name__ == "__main__":
app.run()5
Verify your backend traces are being recorded.
Visit the highlight traces portal and check that backend traces are coming in.