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February 20, 2023 13:33
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opentelemetry Outreachy
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| Things to read: | |
| grpc: https://grpc.io/docs/what-is-grpc/core-concepts/ | |
| https://opentelemetry.io/docs/instrumentation/python/ | |
I tried to set up and get tracing telemetry from an HTTP server with Flask. For this, I installed flask and opentelemetry-distro package after this created the HTTP server with the /rolldice route. The code for the same is
from random import randint
from flask import Flask, request
app = Flask(__name__)
@app.route("/rolldice")
def roll_dice():
return str(do_roll())
def do_roll():
return randint(1, 6)
But I failed to run this. So, I added the following lines to the end of code
if __name__ == " __main__ " :
app.run()
After this, I installed flask instrumentation
opentelemetry-bootstrap -a install
For running the instrumented app :
opentelemetry-instrument \
--traces_exporter console \
--metrics_exporter console \
flask run
After sending a request to the server we now get a trace with a span in the console.
typed-ast error, switch to python 3.9 for all the errors.
Also, use tox from the development version.
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Lint errors were not getting fixed. For some reason, the main branch was failing with specific lint errors which were not being reflected on CI.