fix(stf/branch/memiter): Fix Iter validity #21556
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Outside diff range, codebase verification and nitpick comments (2)
server/v2/stf/branch/changeset.go (2)
56-56: Review: Change in iterator method return type.The change from
store.Iteratorto*memIteratorin theiteratormethod is significant as it ties the method more directly to the specific implementation ofmemIterator. This could lead to tighter coupling between thechangeSetandmemIteratorclasses, which might reduce flexibility if other iterator types are needed in the future. However, this change could also improve performance by leveraging specific features ofmemIterator.Consider documenting the reasons for this change, especially if it relates to performance improvements or other critical enhancements.
66-66: Potential Issue withreverseIteratorReturn Type ChangeThe
reverseIteratormethod's return type change to*memIteratormay cause compatibility issues, asmemIteratordoes not implement the necessary methods (Close(),Key(),Next(),Valid()) to conform to the expectedcorestore.Iteratorinterface. This could affect parts of the codebase that rely on this interface, such as themergeIteratorsfunction. Please ensure that all usages are updated accordingly to handle this change.
- Locations to Review:
store/gaskv/store_test.go: Ensure test cases handle the new return type.server/v2/stf/branch/store.go: Verify compatibility withmergeIterators.Analysis chain
Review: Change in reverseIterator method return type.
Similar to the
iteratormethod, changing the return type in thereverseIteratormethod fromstore.Iteratorto*memIteratorincreases the dependency on thememIteratorimplementation. Ensure that all parts of the codebase that use this method are updated to handle the new return type correctly.It's also important to verify that this change does not introduce any regressions in areas of the codebase that expect an iterator to conform to the
store.Iteratorinterface.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify all function calls to `reverseIterator` match the new signature. # Test: Search for the function usage. Expect: Only occurrences of the new signature. rg --type go -A 5 $'reverseIterator'Length of output: 3250
Script:
#!/bin/bash # Check if memIterator implements the necessary methods ast-grep --lang go --pattern $'type memIterator struct { $$$ } func ($_ memIterator) Close() error { $$$ } func ($_ memIterator) Key() []byte { $$$ } func ($_ memIterator) Next() { $$$ } func ($_ memIterator) Valid() bool { $$$ }' # Check the mergeIterators function to see what it expects rg --type go -A 5 'func mergeIterators'Length of output: 1311
Script:
#!/bin/bash # Corrected pattern to check if memIterator implements the necessary methods ast-grep --lang go --pattern $'type memIterator struct { $$$ }' ast-grep --lang go --pattern $'func ($_ memIterator) Close() error { $$$ }' ast-grep --lang go --pattern $'func ($_ memIterator) Key() []byte { $$$ }' ast-grep --lang go --pattern $'func ($_ memIterator) Next() { $$$ }' ast-grep --lang go --pattern $'func ($_ memIterator) Valid() bool { $$$ }'Length of output: 1568
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Files selected for processing (2)
- server/v2/stf/branch/changeset.go (4 hunks)
- server/v2/stf/branch/changeset_test.go (1 hunks)
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server/v2/stf/branch/changeset_test.go (2)
Pattern
**/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
Pattern
**/*_test.go: "Assess the unit test code assessing sufficient code coverage for the changes associated in the pull request"server/v2/stf/branch/changeset.go (1)
Pattern
**/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
Additional comments not posted (2)
server/v2/stf/branch/changeset_test.go (1)
9-28: Comprehensive and well-structured test formemIteratorclosure behavior.This test function
Test_memIteratoris well-structured and effectively tests the critical functionality described in the PR summary. The use of a loop to populate thechangeSetand the subsequent iterator operations followed by the validation of the iterator state after closure are all appropriate and align well with the intended test coverage.
- Correctness: The test correctly checks that the iterator is invalid after being closed, which is the core issue addressed by the PR.
- Readability and Maintainability: The test is readable and maintainable. The use of
require.Falsefor asserting the state of the iterator is clear and concise.- Conformity: The test conforms to the Uber Golang style guide, with proper error handling and use of assertions.
Overall, the test suite appears to provide sufficient coverage for the changes made in the PR, ensuring that the iterator behaves as expected post-closure.
server/v2/stf/branch/changeset.go (1)
159-159: Review: Modification in the Close method of memIterator.Setting
mi.validtofalsein theClosemethod is a crucial fix that ensures the iterator correctly reflects its state after being closed. This change prevents potential bugs where a closed iterator might still be considered valid. This is a good practice in managing the state of objects and should help maintain the robustness of the iterator's lifecycle management.Ensure that this change is covered by the new test suite to verify that the iterator behaves as expected after being closed.
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Files selected for processing (1)
- server/v2/stf/branch/changeset_test.go (1 hunks)
Files skipped from review as they are similar to previous changes (1)
- server/v2/stf/branch/changeset_test.go
Description
This PR fixes an issue for which the Iter was not market as invalid after being Closed.
Tests added to ensure behaviour is correct.
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Summary by CodeRabbit
New Features
Bug Fixes
Tests