Add robustness for missing TupleComponents

[mikaylathompson]

Description

While prepping for the demo today, we encountered a bug while checking the tuples. A tuple was throwing the following error (shown with a minimal-ish valid tuple):

(.venv) sh-5.2# echo '{"sourceRequest":{"Request-URI":"/_snapshot/migration_assistant_repo/rfs-snapshot","Method":"DELETE","HTTP-Version":"HTTP/1.1","payload":{"inlinedTextBody":""}},"targetRequest":{"Request-URI":"/_snapshot/migration_assistant_repo/rfs-snapshot","Method":"DELETE","payload":{"inlinedTextBody":""}},"targetResponses":[{"Date":["Tue, 10 Dec 2024 21:07:03 GMT"],"Content-Type":["application/json; charset=UTF-8"],"Status-Code":404,"Reason-Phrase":"Not Found","response_time_ms":49,"payload":{"inlinedJsonBody":{}}}],"connectionId":"024ad2fffe460aed-00000007-00000ac1-61aca27669436ce2-fdb9a98a.1563","numRequests":4,"numErrors":0}' | console tuples show
Traceback (most recent call last):
...
  File "/root/lib/console_link/console_link/middleware/tuples.py", line 10, in convert
    tuple_reader.transform_stream(inputfile, ouptutfile)
  File "/root/lib/console_link/console_link/models/tuple_reader.py", line 26, in transform_stream
    json.dump(next(transformer), outputfile)
              ^^^^^^^^^^^^^^^^^
  File "/root/lib/console_link/console_link/models/tuple_reader.py", line 34, in _transform_lines
    yield parse_tuple(line, i + 1)
          ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/lib/console_link/console_link/models/tuple_reader.py", line 194, in parse_tuple
    tuple_component = TupleComponent(component, initial_tuple[component], line_no, is_bulk_path)
                                                ~~~~~~~~~~~~~^^^^^^^^^^^
KeyError: 'sourceResponse'

This tuple is as-expected, except that it doesn't have a sourceResponse field, which is a valid state for a tuple. The correct behavior is to translate all the present components of the tuple, but not to worry about the missing ones.

The fixed behavior (same tuple):

(.venv) sh-5.2# echo '{"sourceRequest":{"Request-URI":"/_snapshot/migration_assistant_repo/rfs-snapshot","Method":"DELETE","HTTP-Version":"HTTP/1.1","payload":{"inlinedTextBody":""}},"targetRequest":{"Request-URI":"/_snapshot/migration_assistant_repo/rfs-snapshot","Method":"DELETE","payload":{"inlinedTextBody":""}},"targetResponses":[{"Date":["Tue, 10 Dec 2024 21:07:03 GMT"],"Content-Type":["application/json; charset=UTF-8"],"Status-Code":404,"Reason-Phrase":"Not Found","response_time_ms":49,"payload":{"inlinedJsonBody":{}}}],"connectionId":"024ad2fffe460aed-00000007-00000ac1-61aca27669436ce2-fdb9a98a.1563","numRequests":4,"numErrors":0}' | console tuples show
{"sourceRequest": {"Request-URI": "/_snapshot/migration_assistant_repo/rfs-snapshot", "Method": "DELETE", "HTTP-Version": "HTTP/1.1", "payload": {"inlinedTextBody": ""}, "body": {}}, "targetRequest": {"Request-URI": "/_snapshot/migration_assistant_repo/rfs-snapshot", "Method": "DELETE", "payload": {"inlinedTextBody": ""}, "body": {}}, "targetResponses": [{"Date": ["Tue, 10 Dec 2024 21:07:03 GMT"], "Content-Type": ["application/json; charset=UTF-8"], "Status-Code": 404, "Reason-Phrase": "Not Found", "response_time_ms": 49, "payload": {"inlinedJsonBody": {}}, "body": {}}], "connectionId": "024ad2fffe460aed-00000007-00000ac1-61aca27669436ce2-fdb9a98a.1563", "numRequests": 4, "numErrors": 0}

I add a log message at info level, so a user can add -v to view these logs (and others), but they don't indicate an error and shouldn't be surfaced to most users.

Issues Resolved

Testing

Manual, working on a unit test.

Check List

• New functionality includes testing
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[lewijacn]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.61%. Comparing base (6d3b225) to head (8d8799a).
Report is 28 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1194      +/-   ##
============================================
+ Coverage     80.55%   80.61%   +0.06%     
- Complexity     3074     3080       +6     
============================================
  Files           421      421              
  Lines         15545    15598      +53     
  Branches       1047     1053       +6     
============================================
+ Hits          12522    12575      +53     
  Misses         2380     2380              
  Partials        643      643              

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unittests	80.61% <ø> (+0.06%)	⬆️

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