feat: add istio example (#29)

[marcelloale]

Description

Add Istio example access log filtering using CEL

Linked Issues

#29

[matheusfm]

Hi @marcelloale
Thank you for this PR! I appreciate your contribution.

Could you please include the other fields in the input data of the example?

I see that you've included only response.code and xds.cluster_name, but there are several other fields documented here.

Please run also make update-data

[matheusfm]

Hi, @marcelloale

Here are some examples of Istio/Envoy attributes for CEL: https://gist.github.com/matheusfm/31e96d49159937266e5bb88d69fddb91

This gist contains three YAML-formatted examples, where client-passthrough-http.yml seems to be related to the CEL expression you are adding, as xds.cluster_name is PassthroughCluster.

Could you please consider using this example as input data?

PS: A big thank you to @howardjohn for their help with these examples.

[marcelloale]

Hi, @marcelloale

Here are some examples of Istio/Envoy attributes for CEL: https://gist.github.com/matheusfm/31e96d49159937266e5bb88d69fddb91

This gist contains three YAML-formatted examples, where client-passthrough-http.yml seems to be related to the CEL expression you are adding, as xds.cluster_name is PassthroughCluster.

Could you please consider using this example as input data?

PS: A big thank you to @howardjohn for their help with these examples.

Hi @matheusfm ,

I've been occupied over the past week, but I intend to make the necessary adjustments as soon as possible this weekend.

I want to thank @matheusfm and @howardjohn for the examples.

[marcelloale]

Hi @matheusfm, I've added the new input data, but I removed some 'null' fields to reduce the size of the example. If necessary, I can commit the original example without any alterations.

[matheusfm]

Thank you @marcelloale for the collaboration!

Could you resolve git conflicts please? Then we can merge these changes.

[marcelloale]

@matheusfm done

[matheusfm]

Thank you very much @marcelloale for your contribution and collaboration. We really appreciate it.