Recipe for using Foyle endpoints with if/else

[jlewi]

Our playbooks rely on using CURL to hit various endpoints. We often pipe the output to jq for further processing

export TRACEID=$(curl -s -X POST http://localhost:8877/api/foyle.logs.LogsService/GetBlockLog -H "Content-Type: application/json" -d "{\"id\": \"${CELLID}\"}" | jq .blockLog.genTraceId)

The problem with this is that it doesn't play well with the case where the request fails or returns an error. In which case we should abort rather than piping to jq.

So I think we need to use an if/else statement. But what's a good recipe for testing whether it succeeded?

[jlewi]

One pattern could be to do

1. Write output to a file
2. Check the exit code
   e.g.

curl -s -o /tmp/response.json -X POST http://localhost:8877/api/foyle.logs.LogsService/GetLLMLogs -H "Content-Type: application/json" -d "{\"traceId\": \"${TRACEID}\"}"
CODE="$?"
if [ $CODE -ne 0 ]; then
  echo "Error occurred while fetching LLM logs"
  exit $CODE
fi