Observability Course Labs
Lab Solution
Your trace will look something like this:
This is the call stack:
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the web app receives a POST request at http://localhost:8070/Submit - this is from the user clicking the Go button; there are no extra details because the information is in the request body which isn't traced
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the web app makes a GET request to the authorization service at http://fulfilment-authz/check/0421/Submit - you can guess this is checking that user with ID 0421 has permission to submit documents
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the authorization service makes a GET request to https://blog.sixeyed.com - this doesn't make any sense; in a real app this could be a call to an external identity service
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the web app makes a POST request to the document service at http://fulfilment-api/document - this is the actual request to submit a document
The final document API span contains some log entries as well as the tags. The log attributes tell you the name of the class and method:
handler.class_simple_name = DocumentsController
handler.method_name = submitDocument