Dan/top infra errors

[danielsdeleo]

🔩 Description: What code changed, and why?

API for the top Chef Infra errors. Aggregates the most common error by class+message among the most recent chef runs across the fleet. The nodes considered in the aggregation can be filtered with the same filters as other node APIs (except status is not allowed because the aggregation only considers nodes with "failed" status).

⛓️ Related Resources

• User story, etc.: top errors api #2996
• related PR for dev/testing: Dan/refactor studio infra data gen #3213

👍 Definition of Done

👟 How to Build and Test the Change

Generating usable test data is most easily done with the changes in #3213 -- the instructions here assume that's merged or you make a combo branch or get those changes some other way.

• restart your studio, or at least source .studio/automate-gateway -- this is used for the data generation step.
• Build automate-gateway, ingest and config-management services, start all services
• You need sample data with different error classes and messages. The following script will generate usable data in a randomized way:

for _ in {1..500} ; do
  m=$((RANDOM % 4))
  n=$((RANDOM % 25))
  generate_chef_run_failure_example | \
    jq --arg msg "Error $n occurred" --arg type "Chef::ExampleError$m" '.error.message = $msg | .error.class = $type' | \
    send_chef_data_raw
done

• You can then call the api with curl -f --insecure -H "api-token: $(get_admin_token)" "$GATEWAY_URL/cfgmgmt/errors" | jq .

✅ Checklist

• I have read the CONTRIBUTING document.
• Tests added/updated?
• Docs added/updated?
• All commits have been signed-off for the Developer Certification of Origin.

[vjeffrey]

⭐️

[vjeffrey]

THANK YOU for all the descriptive comments, this is awesome!

[vjeffrey]

⭐️ thank you!!

[lancewf]

I manually tested this and got through most of the code.