fix(bootstrap): Handle malformed BOOTSTRAP values

[direkkakkar319-ops]

Description

Fixes a bootstrap edge case where unexpected Redis BOOTSTRAP string formats could cause bootstrap_state() to return None and crash callers with AttributeError.

if len(bootstrap.split("-")) == 1:
    ...  return bootstrap_state
elif len(bootstrap.split("-")) == 2:
    ...  return bootstrap_state
# ← falls off the end, returns None

Addeed a fallback else branch that returns a safe default and logs a warning

else:
    logging.warning(f"Unexpected bootstrap value format: {bootstrap!r}")
    return BootstrapState(bootstrap=False, state="unknown", task_id=None)

Also adds a unit test covering a malformed 3-segment bootstrap value.

tests cases pass

linting passes

impact

A corrupted or unexpected Redis value brings down the API entirely — a silent DoS on the bootstrap machinery. All endpoints that call bootstrap_state() are affected.

testing

test ran fro confirming the fix

$env:RSTUF_BOOTSTRAP_NODE='true'; $env:RSTUF_BROKER_SERVER='fakeserver'; $env:RSTUF_REDIS_SERVER='redis://fakeredis'; .\.venv\Scripts\python -m pytest -q tests/unit/tuf_repository_service_api/test__init__.py -k unexpected_format

output

.                                                                        [100%]
============================== warnings summary ===============================
.venv\Lib\site-packages\_pytest\cacheprovider.py:475
  F:\repository-service-tuf-api\.venv\Lib\site-packages\_pytest\cacheprovider.py:475: PytestCacheWarning: could not create cache path F:\repository-service-tuf-api\.pytest_cache\v\cache\nodeids: [WinError 183] Cannot create a file when that file already exists: 'F:\\repository-service-tuf-api\\.pytest_cache\\v\\cache'
    config.cache.set("cache/nodeids", sorted(self.cached_nodeids))

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
1 passed, 6 deselected, 1 warning in 0.25s

Types of changes

• Bug fix
• New feature
• Breaking change

Additional requirements

• Tests have been added for the bug fix or new feature
• Docs have been added for the bug fix or new feature

Use of AI

• AI was used to generate or assist with generating this PR.

Code of Conduct

• I agree to follow this project's Code of Conduct

[direkkakkar319-ops]

Hi, @kairoaraujo thius PR addeds a defensive fallback in bootstrap_state() for malformed BOOTSTRAP values (returns safe unknown state + warning) and covered it with a regression test for a 3-segment input.