How to extract trace data from jaeger

[gxxxh]

I am trying to learn kubernetes recently. I have already deployed jaeger (all-in-one) on istio. Although I can see the trace information on the jaeger UI, I don't know how to extract these trace data by python so that I can use these data to do something about AIops.
I think there should be some API to access these data dicectly by python but I don't find it. or can I access the cassandra using python to get these data. I don't find how to do it so I open this discussion.

[jpkrohling]

@Ashmita152 might be able to help you on this.

[yurishkuro]

The APIs are documented here: https://www.jaegertracing.io/docs/1.22/apis/

[Ashmita152]

Hi @gxxxh

There are various ways to pull jaeger data as Yuri shared. The easiest one I found is by hitting jaeger-query's http endpoint: /api/traces. You can refer to this python script to do the same:

https://github.com/Ashmita152/jaeger-datasets/blob/master/bookinfo/extract.py

Let us know if you have more questions. Thank you.

[gxxxh]

Thank you very much for the answer. I have realized that I had got into a completely wrong direction. The answer is really helpful.

[kapilagrawal95]

Hi, this does not seem to work now. Get the following error when running your script for my use-case:

Traceback (most recent call last):
File "", line 1, in
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/json/init.py", line 346, in loads
return _default_decoder.decode(s)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

[Entromorgan]

@kapilagrawal95 I have the same error. Changing the endpoints from "http://localhost:16686/jaeger/api/xxx" to "http://localhost:16686/api/xxx" can solve it.