CNDB-14239: expose index components validation method with no side-effect (#1794)

[driftx]

The existing IndexComponents#validateComponents method validates some group of index components files (ensure we have all the files we should have, and ensure they looks valid), but it also has some side-effect backed in. It potentially deletes invalid components it found, and invalidate the whole group if validation fails, which rewrite the sstable TOC and whatnot.

For CNDB, it would be useful to be able to validate components on reload without necessarily triggering the side effects, and the plan is to rely on such no-side-effect variant in the patch for
https://github.com/riptano/cndb/issues/14239. But I'd argue having this variant make sense in general and could easily have other uses later, and the changes are trivially backward compatible (they only introduce 2 new methods.

[github-actions]

Checklist before you submit for review

• Make sure there is a PR in the CNDB project updating the Converged Cassandra version
• Use NoSpamLogger for log lines that may appear frequently in the logs
• Verify test results on Butler
• Test coverage for new/modified code is > 80%
• Proper code formatting
• Proper title for each commit staring with the project-issue number, like CNDB-1234
• Each commit has a meaningful description
• Each commit is not very long and contains related changes
• Renames, moves and reformatting are in distinct commits
• All new files should contain the DataStax copyright header instead of the Apache License one

[driftx]

5.0's validateComponents method has an extra boolean rethrow parameter, this patch preserves and handles it by throwing an UncheckedIOException when validation fails and rethrow is true.

The static deleteComponentFile method's functionality was moved into the new instance delete() method that was added to the IndexComponent.ForWrite interface by the original patch.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
83.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[cassci-bot]

❌ Build ds-cassandra-pr-gate/PR-1882 rejected by Butler

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38 new test failure(s) in 1 builds
See build details here

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Found 38 new test failures

Showing only first 15 new test failures

Test	Explanation	Branch history	Upstream history
...lidation.operations.AlterTest-compression_jdk11	regression	🔴
...nQueryShouldNotTimeoutWhenItExceedesReadTimeout	regression	🔴
...nglePageReadIsFastButAggregationExceedesTimeout	regression	🔴
...adCommitLogAndSSTablesWithDroppedColumnTestCC50	regression	🔴
...oadCommitLogAndSSTablesWithDroppedColumnTestDSE	regression	🔴
...thRestartTest.testReadingValuesOfDroppedColumns	regression	🔴
o.a.c.d.t.s.f.FeaturesVersionSupportDBTest.testANN	regression	🔴
o.a.c.d.t.s.f.FeaturesVersionSupportDCTest.testANN	regression	🔴
o.a.c.d.t.s.f.FeaturesVersionSupportEBTest.testANN	regression	🔴
...c.FeaturesVersionSupportTest.testANNSupport[eb]	regression	🔴
....FeaturesVersionSupportTest.testGeoDistance[aa]	regression	🔴
....FeaturesVersionSupportTest.testGeoDistance[ba]	regression	🔴
....s.f.SnapshotTest.shouldTakeAndRestoreSnapshots	regression	🔴
...cySSTableTest.testVerifyOldDroppedTupleSSTables	regression	🔴
...m.TrieMemtableMetricsTest.testContentionMetrics	regression	🔴

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No known test failures found