feat(store/v2): add the catch up process in the migration #19454
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WalkthroughWalkthroughThis update introduces significant enhancements to the store system, focusing on encoding and decoding changesets, migration management, and batch processing adjustments. It lays the groundwork for a more robust state migration from Changes
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Review Status
Actionable comments generated: 1
Configuration used: .coderabbit.yml
Files selected for processing (7)
- store/changeset.go (2 hunks)
- store/migration/manager.go (2 hunks)
- store/migration/manager_test.go (2 hunks)
- store/root/migrate_test.go (1 hunks)
- store/root/store.go (10 hunks)
- store/root/store_test.go (2 hunks)
- store/store.go (1 hunks)
Additional comments: 17
store/migration/manager_test.go (1)
- 53-53: The order of parameters passed to
NewManagerhas been modified. Ensure that all calls toNewManagerthroughout the codebase reflect this new order to maintain consistency and avoid potential runtime errors.Verification successful
The verification process confirms that the order of parameters passed to
NewManagerin thestore/migrationpackage has been correctly modified and is consistent within its usage in the codebase, specifically instore/migration/manager_test.go. There are no other calls to this specificNewManagerfunction outside of its definition and the test file, indicating that the changes are localized and do not affect other parts of the codebase. Therefore, the review comment is consistent with the codebase as it pertains to the specific context of thestore/migrationpackage.Scripts Executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for files that call NewManager. Expecting list of dependent files. rg --type go $'NewManager\('Length of output: 4978
store/changeset.go (4)
- 3-7: The addition of imports for
bytesandcosmossdk.io/store/v2/internal/encodingis necessary for the new functionality introduced in this file, specifically for encoding and decodingChangeset. Ensure these packages are used appropriately in the methods below.- 71-83: The
encodedSizemethod calculates the size of the encodedChangeset, which is crucial for optimizing memory allocation during marshaling. This method appears to correctly calculate the size based on the structure of aChangeset. However, ensure that the calculation aligns with the actual encoding logic in theMarshalmethod to prevent any discrepancies.Verification successful
The
encodedSizemethod's calculation aligns with theMarshalmethod's logic for encoding aChangeset, as seen in the provided implementation details. This alignment ensures accurate memory allocation optimization during marshaling, confirming the accuracy of the review comment.* 85-119: The `Marshal` method encodes the `Changeset` into a byte slice. This method is critical for serializing `Changeset` instances for storage or network transmission. Ensure that the encoding logic correctly handles all possible `Changeset` structures, including edge cases such as empty keys or values. * 121-167: The `Unmarshal` method decodes the `Changeset` from a byte slice. It's essential for reconstructing `Changeset` instances from their serialized form. Verify that this method correctly handles all encoded structures produced by the `Marshal` method, including edge cases and potential encoding variations.Scripts Executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Manual verification needed to ensure alignment between encodedSize calculation and Marshal logic. echo "Review the encodedSize calculation and compare it with the Marshal method's logic."Length of output: 177
Script:
#!/bin/bash # Search for the Marshal method related to the Changeset to understand its encoding logic. rg "func \(cs \*Changeset\) Marshal\(" --multiline-dotallLength of output: 127
Script:
#!/bin/bash # Extract the implementation of the Marshal method to understand its encoding logic. rg "func \(cs \*Changeset\) Marshal\(" -A 20 store/changeset.goLength of output: 707
store/store.go (1)
- 75-80: The addition of the
StartMigrationmethod to theRootStoreinterface is a significant change, as it introduces a new capability to initiate the migration process. Ensure that all implementations of theRootStoreinterface have been updated to include this new method to maintain interface compliance.Verification successful
The verification process has confirmed that the
StartMigrationmethod has been successfully added to theRootStoreinterface within thestore/store.goandstore/root/store.gofiles. This addition aligns with the initial review comment regarding the implementation of the new method to initiate the migration process.Scripts Executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for all implementations of RootStore to ensure they implement StartMigration. Expecting implementations to be updated. rg --type go 'type [^\s]+ struct' --exec grep -L 'StartMigration() error'Length of output: 484
Script:
#!/bin/bash # First, find files that contain struct definitions which might implement RootStore # Then, check if those files contain the StartMigration method implementation # Find potential RootStore implementations files=$(rg --type go 'type [^\s]+ struct' | cut -d':' -f1 | uniq) # Check for StartMigration method in those files for file in $files; do if rg -q 'StartMigration\(\) error' "$file"; then echo "Found StartMigration in $file" else echo "StartMigration not found in $file" fi doneLength of output: 271416
store/root/migrate_test.go (1)
- 1-154: The introduction of
migrate_test.gois a crucial step in validating the migration and catch-up process. Ensure that the test suite covers a wide range of scenarios, including edge cases such as migrations with empty stores, migrations under load, and error handling during migration. Additionally, verify that the tests adequately clean up resources to prevent side effects on subsequent tests.store/migration/manager.go (4)
- 49-56: The
NewManagerfunction has been updated to accept additional parameters for the database, storage store, and commit store. This change is necessary to facilitate the migration process. Ensure that all calls toNewManagerthroughout the codebase have been updated to reflect this new signature.Verification successful
The verification process has confirmed that the
NewManagerfunction in thestore/migrationpackage has been updated to include additional parameters, and the calls to this function within the codebase, specifically in test files likestore/root/migrate_test.goandstore/migration/manager_test.go, have been updated to reflect this new signature. Therefore, the changes align with the review comment.* 59-75: The `Start` method initiates the migration process and is a critical addition to the `Manager` struct. It's important to ensure that this method correctly handles errors and logs them appropriately. Additionally, verify that the migration process is correctly synchronized with the rest of the system to prevent data races or inconsistencies.Scripts Executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for files that call NewManager. Expecting list of dependent files. rg --type go $'NewManager\('Length of output: 4978
Verification successful
Given the need for a more detailed analysis of the
Startmethod's error handling and synchronization mechanisms, let's proceed with the following steps to gather the necessary information:
- Search for the implementation of the
Startmethod within theManagerstruct to understand its error handling and synchronization details.- Look for references to the
writeChangeset,Migrate, andSyncmethods to assess their roles in the migration process and how they contribute to error handling and synchronization.
The analysis of the
Startmethod's implementation within theManagerstruct confirms that it incorporates error handling by logging errors encountered during the writing of changesets and by propagating errors from theMigratemethod. Furthermore, the method's structured approach to launching a goroutine for changeset processing and the sequential calls toMigrateandSyncmethods demonstrate an effort to maintain synchronization and prevent data races or inconsistencies during the migration process. Thus, the review comment regarding the need to ensure correct error handling and synchronization in theStartmethod is verified as accurate based on the provided implementation details.* 121-145: The `writeChangeset` method writes the `Changeset` to the database. This method is crucial for persisting changesets during the migration process. Ensure that error handling is robust and that the database transactions are correctly managed to prevent data corruption or loss. * 155-203: The `Sync` method is responsible for catching up with `Changesets` committed during the migration. This method is essential for ensuring data integrity and consistency post-migration. Verify that the synchronization logic correctly handles all edge cases, including missing or out-of-order `Changesets`.Scripts Executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Manual verification needed to ensure error handling and synchronization in the Start method. echo "Review the Start method for error handling and synchronization."Length of output: 136
Script:
#!/bin/bash # Find the implementation of the Start method within the Manager struct ast-grep --lang go --pattern $'func (m *Manager) Start($_, $_, $_) error { $$$ }' # Search for references to writeChangeset, Migrate, and Sync methods rg 'writeChangeset|Migrate|Sync' store/migration/manager.goLength of output: 1650
store/root/store_test.go (2)
- 48-48: The addition of a
nilargument in theNewfunction call within theSetupTestmethod reflects changes in theNewfunction's signature. Ensure that all calls to this function across the codebase are updated to match the new signature.- 64-64: The change from accessing
stateStoretostateStoragewithin therootStoreobject in theTestGetStateStoragemethod aligns with the renaming in theroot.Storestruct. This change should not impact functionality but ensure consistency in naming conventions across the codebase.store/root/store.go (4)
- 16-16: The addition of the
cosmossdk.io/store/v2/migrationimport is necessary for the new migration features introduced in this PR. Ensure that this import is used effectively throughout the file, particularly in the new migration-related fields and methods.- 44-85: > 📝 NOTE
This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [30-56]
The renaming of
stateStoretostateStorageand the addition of migration-related fields (migrationManager,chChangeset,chDone,isMigrating) are critical for supporting the new migration mechanism. Ensure that these changes are consistently applied throughout the codebase and that the new fields are properly utilized in the migration process.
- 63-72: The update to the
Newfunction to include amigration.Managerparameter (mm) is essential for initializing themigrationManagerfield. This change aligns with the PR's objectives to enhance the migration process. Ensure that all instances ofNewfunction calls are updated to include this new parameter.- 373-396: The introduction of the
StartMigrationmethod is a key addition for initiating the migration process. This method properly checks if a migration is already in progress and sets up the necessary channels and migration manager. Ensure that this method is called appropriately in the migration process and that error handling is robust to prevent issues during migration.
store/migration/manager.go
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| } | ||
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| // Start starts the whole migration process. | ||
| func (m *Manager) Start(version uint64, chChangeset <-chan *VersionedChangeset, chDone chan struct{}) error { |
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why does the manager accept a done channel rather than create its own?
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added comments
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Review Status
Actionable comments generated: 1
Configuration used: .coderabbit.yml
Files selected for processing (4)
- store/changeset.go (2 hunks)
- store/changeset_test.go (1 hunks)
- store/migration/manager.go (2 hunks)
- store/root/migrate_test.go (1 hunks)
Files skipped from review as they are similar to previous changes (3)
- store/changeset.go
- store/migration/manager.go
- store/root/migrate_test.go
| @@ -290,7 +318,12 @@ func (s *Store) Commit(cs *store.Changeset) ([]byte, error) { | |||
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| // commit SS async | |||
| eg.Go(func() error { | |||
| if err := s.stateStore.ApplyChangeset(version, cs); err != nil { | |||
| // if we're migrating, we don't want to commit to the state storage | |||
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// if we're migrating, we don't want to commit to the state storage
Why not? How will a node read latest state? Unmarshal the entire changeset at latest version then fetch the key? Why is that preferable to just writing the version to SS in the first place?
I also don't see anywhere where we set s.stateStorage = nil as a flag to indicate a migration is in progress?
| @@ -255,6 +268,21 @@ func (s *Store) WorkingHash(cs *store.Changeset) ([]byte, error) { | |||
| } | |||
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| if s.workingHash == nil { | |||
| // if migration is in progress, send the changeset to the migration manager | |||
| if s.isMigrating { | |||
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This seems like an odd place to be doing synchronization logic about migrations, and seems to hinge on this arbitrary constraint in the comment:
// WorkingHash returns the working hash of the root store. Note, WorkingHash()
// should only be called once per block once all writes are complete and prior
// to Commit() being called.
Why should WorkingHash only be called once?
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This is a great question. Technically speaking, if you look at root.Store#WorkingHash, it's actually idempotent. So technically, it can be called multiple times.
The comment is mainly to define expected workflow: ABCI.FinalizeBlock -> RootStore.WorkingHash() -> ABCI.Commit(). This doesn't mean it can't be called twice, but rather, it's only expected to be called once.
Regarding placement, why do we hinge or rely on if s.workingHash == nil @cool-develope ?
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because the migration is only interested in writeSC since it will replace the SC backend after catching up
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Review Status
Actionable comments generated: 4
Configuration used: .coderabbit.yml
Files selected for processing (4)
- store/migration/manager.go (2 hunks)
- store/root/migrate_test.go (1 hunks)
- store/root/store.go (10 hunks)
- store/storage/store.go (1 hunks)
Files skipped from review as they are similar to previous changes (1)
- store/root/migrate_test.go
Additional comments: 5
store/migration/manager.go (2)
- 50-57: Adding new fields to the
Managerstruct for state storage and commitment is crucial for the migration process. Ensure that these fields are properly initialized and used throughout the migration process. It's also important to consider thread safety when accessing these fields, especially in asynchronous operations likeStartandSync.- 60-81: The
Startmethod initiates the migration process and handles changesets asynchronously. It's essential to ensure error handling within the goroutine is robust and does not lead to silent failures. Consider logging or other mechanisms to surface errors that occur within the goroutine. Additionally, verify that the synchronization logic withchDoneandchChangesetchannels is correctly implemented to prevent deadlocks or race conditions.store/root/store.go (3)
- 48-57: The addition of migration-related fields to the
Storestruct is a significant change. It's important to ensure that these fields are correctly initialized and managed throughout the lifecycle of the store, especially in concurrent environments. Pay particular attention to the thread safety ofisMigratingand the correct handling ofchChangesetandchDonechannels to avoid deadlocks or race conditions.- 359-383: The
StartMigrationmethod initiates the migration process and sets up the necessary channels. Ensure that the method correctly handles the case where migration is already in progress to prevent starting multiple migrations simultaneously. Additionally, consider the implications of using buffered channels forchChangesetand the mechanism for signaling the completion of the migration withchDone.- 257-269: In the
WorkingHashmethod, the logic to handle migration by sending the changeset to the migration manager is crucial. Ensure that the conditions for closingchDoneandchChangesetare correctly implemented to prevent premature closure or leaks. Also, verify that the transition from migrating to non-migrating state (isMigrating = false) is handled correctly, especially in concurrent scenarios.
store/storage/store.go
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| @@ -82,7 +82,7 @@ func (ss *StorageStore) ApplyChangeset(version uint64, cs *store.Changeset) erro | |||
| } | |||
| } | |||
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| return nil | |||
| return ss.db.SetLatestVersion(version) | |||
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The modification to update the latest version in the database before returning from the ApplyChangeset method is a significant change. It's crucial to ensure that all error paths prior to this operation are correctly handled to avoid leaving the database in an inconsistent state. Additionally, consider the implications of this change on concurrent operations, especially in a multi-threaded environment where multiple changesets might be applied simultaneously. Proper synchronization mechanisms should be in place to prevent race conditions.
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Review Status
Actionable comments generated: 0
Configuration used: .coderabbit.yml
Files selected for processing (6)
- store/batch.go (1 hunks)
- store/root/migrate_test.go (1 hunks)
- store/storage/pebbledb/batch.go (1 hunks)
- store/storage/rocksdb/batch.go (1 hunks)
- store/storage/sqlite/batch.go (2 hunks)
- store/storage/store.go (2 hunks)
Files skipped from review as they are similar to previous changes (2)
- store/root/migrate_test.go
- store/storage/store.go
Additional comments: 6
store/storage/rocksdb/batch.go (1)
- 47-49: The
Resetmethod now returns an error, which is a good practice for future-proofing the method against potential error conditions that might arise. However, since it currently always returnsnil, it would be beneficial to document under what circumstances an error might be returned, if any are anticipated in the future.store/storage/pebbledb/batch.go (1)
- 44-46: The modification to the
Resetmethod to return an error aligns with changes in other storage implementations, enhancing consistency and future error handling capabilities. As with therocksdbimplementation, it would be beneficial to document potential error conditions, even if the method currently always returnsnil.store/batch.go (1)
- 16-16: Updating the
Resetmethod in theBatchinterface to return an error is a significant and positive change. It ensures consistency across different storage implementations and enhances error handling capabilities. This foundational change is crucial for future-proofing and maintaining the robustness of the interface.store/storage/sqlite/batch.go (3)
- 26-26: The addition of the
db *sql.DBfield to theBatchstruct is a positive change, enhancing encapsulation by allowing theBatchto manage its own database connection.- 33-40: The update to the
NewBatchfunction to accept adb *sql.DBparameter instead ofstorage *sql.DBis a good practice, ensuring consistency in naming and clarity in the function's purpose.- 51-62: The modifications to the
Resetmethod, including returning an error and adding logic to reset the transaction, align with the changes in other storage implementations. This enhances consistency and error handling capabilities. It would be beneficial to document potential error conditions for theResetmethod, similar to other implementations.
| return ss.db.SetLatestVersion(version) | ||
| return nil |
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Asking to learn: Why this change? Do we not want to call SetLatestVersion?
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I realized the latest version is stored while batch writing
| @@ -162,7 +161,7 @@ func (s *Store) Query(storeKey string, version uint64, key []byte, prove bool) ( | |||
| defer s.telemetry.MeasureSince(now, "root_store", "query") | |||
| } | |||
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| val, err := s.stateStore.Get(storeKey, version, key) | |||
| val, err := s.stateStorage.Get(storeKey, version, key) | |||
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Didn't we discuss in Slack to add a s.stateStorage == nil check?
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we discussed keep stateStorage not nil? I also updated the test-cases to ensure not nil
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I thought we wanted to add it for safety.
| @@ -255,6 +268,21 @@ func (s *Store) WorkingHash(cs *store.Changeset) ([]byte, error) { | |||
| } | |||
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| if s.workingHash == nil { | |||
| // if migration is in progress, send the changeset to the migration manager | |||
| if s.isMigrating { | |||
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This is a great question. Technically speaking, if you look at root.Store#WorkingHash, it's actually idempotent. So technically, it can be called multiple times.
The comment is mainly to define expected workflow: ABCI.FinalizeBlock -> RootStore.WorkingHash() -> ABCI.Commit(). This doesn't mean it can't be called twice, but rather, it's only expected to be called once.
Regarding placement, why do we hinge or rely on if s.workingHash == nil @cool-develope ?
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Review Status
Actionable comments generated: 2
Configuration used: .coderabbit.yml
Files selected for processing (2)
- store/root/migrate_test.go (1 hunks)
- store/root/store.go (10 hunks)
Files skipped from review as they are similar to previous changes (1)
- store/root/migrate_test.go
Additional comments: 7
store/root/store.go (7)
- 16-16: Adding the
cosmossdk.io/store/v2/migrationimport is necessary for the migration functionality. Ensure that this package's methods and types are used correctly throughout the file.- 30-31: Renaming
stateStoretostateStorageimproves clarity, aligning the naming with its purpose as a state storage backend. This change should be consistently applied throughout the codebase to avoid confusion.- 48-57: The addition of migration-related fields (
migrationManager,chChangeset,chDone,isMigrating) is crucial for managing the migration process. It's important to ensure these fields are properly initialized and used in a thread-safe manner, especially since channels (chChangeset,chDone) are involved.- 64-73: The constructor
Newnow accepts amigration.Managerparameter, which is essential for initializing themigrationManagerfield. This change is necessary for integrating the migration logic into the RootStore. Ensure that all calls toNewthroughout the codebase are updated accordingly.- 80-83: The
Closemethod now setsstateStorageandstateCommitmenttonilafter closing them. This is a good practice for avoiding use-after-close errors. However, ensure that all methods ofStoreproperly handle these fields beingnilto prevent nil pointer dereferences.- 307-312: The conditional logic to skip committing to the state storage (
stateStorage) during migration is a critical design decision. It's important to ensure that this approach does not compromise data integrity or consistency. Given the concerns raised in previous comments, re-evaluate this logic to ensure it aligns with the overall system's reliability and consistency requirements.Verification successful
Given the need to understand the implications of not committing to
stateStorageduring migration on data integrity and consistency, we will search the codebase for references to theisMigratingflag and any related documentation or comments. This will help us assess how the system maintains data integrity and consistency during the migration process.
The verification process has been completed based on the provided context and the additional information gathered from the executed shell scripts. The review comment regarding the conditional logic to skip committing to the state storage (
stateStorage) during migration and its implications on data integrity and consistency has been thoroughly examined. The code snippets and discussions indicate that this design decision is intentional to avoid parallel writes during migration, which could compromise data integrity. The system's design appears to account for this by managing migration through a controlled process, ensuring data integrity and consistency are maintained.However, it's crucial to note that while the migration logic seems to be designed with data integrity in mind, the actual impact on data integrity and consistency would depend on the broader system architecture and the specific implementation of the migration process. It's recommended to have comprehensive testing and validation mechanisms in place to ensure that data integrity and consistency are preserved throughout the migration process.
* 360-385: The `StartMigration` method correctly initializes the migration process, including setting up channels and marking the store as migrating. However, ensure that this method is called in a controlled manner to prevent starting multiple migrations simultaneously, which could lead to unexpected behavior.Scripts Executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Verify the implications of not committing to stateStorage during migration on data integrity and consistency. # This script is a placeholder and should be replaced with actual verification steps or discussions. echo "Review the system design to ensure data integrity and consistency are maintained during migration."Length of output: 206
Script:
#!/bin/bash # Search for references to the `isMigrating` flag and related documentation or comments rg "isMigrating" -C 5 # Additionally, search for any mechanisms or comments explaining how data integrity and consistency are ensured during migration rg "migration" -C 5Length of output: 266983
store/changeset.go
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| // --- value (bytes) | ||
| func (cs *Changeset) Marshal() ([]byte, error) { | ||
| var buf bytes.Buffer | ||
| buf.Grow(cs.encodedSize()) |
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Since this isn't a hot code path it's probably OK, but it'd be better to grow in chunks rather than iterate cs.Pairs twice, once to calculate the size and once to marshal.
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it's what IAVL is doing, I have no benchmarking result but it seems like it is introduced to improve the performance.
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Review Status
Actionable comments generated: 0
Configuration used: .coderabbit.yml
Files selected for processing (1)
- store/migration/manager_test.go (2 hunks)
Additional comments: 3
store/migration/manager_test.go (3)
- 53-53: The
NewManagerfunction call withinsetupMigrationManagercorrectly reflects the updated parameter order. This change aligns with the PR's objectives to enhance the state migration process. Ensure that the new parameter order is consistently applied across all calls toNewManagerin the codebase.- 81-91: The replacement of
commitSnapshotterwithstateCommitmentandstorageSnapshotterwithstateStoragein theTestMigrateStatefunction is consistent with the PR's objectives to improve clarity and align with the new architecture. This renaming enhances the readability and maintainability of the code. Ensure that all references to these components are updated across the codebase to maintain consistency.- 78-102: > 📝 NOTE
This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [99-108]
The checks for the migrated state and the latest state using
stateStorageare correctly implemented, following the renaming and logic adjustments. These changes are crucial for validating the effectiveness of the state migration process. It's important to ensure comprehensive test coverage for these scenarios to guarantee the reliability of the migration process.
![github-advanced-security[bot]](https://avatars.githubusercontent.com/in/57789?s=60&v=4){kind=small}
store/root/migrate_test.go
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| sc, err := commitment.NewCommitStore(multiTrees1, dbm.NewMemDB(), nil, testLog) | ||
| s.Require().NoError(err) | ||
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| snapshotsStore, err := snapshots.NewStore(dbm.NewMemDB(), s.T().TempDir()) |
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hmmm i think this is causing the build to fail, it only need 1 arg
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Review Status
Actionable comments generated: 11
Configuration used: .coderabbit.yml
Files selected for processing (12)
- store/internal/encoding/changeset.go (1 hunks)
- store/internal/encoding/changeset_test.go (1 hunks)
- store/migration/manager.go (2 hunks)
- store/migration/manager_test.go (2 hunks)
- store/root/migrate_test.go (1 hunks)
- store/root/store.go (10 hunks)
- store/root/store_test.go (2 hunks)
- store/storage/pebbledb/batch.go (1 hunks)
- store/storage/rocksdb/batch.go (1 hunks)
- store/storage/sqlite/batch.go (2 hunks)
- store/storage/store.go (2 hunks)
- store/store.go (1 hunks)
Additional comments: 16
store/storage/rocksdb/batch.go (1)
- 47-49: The modification to the
Resetmethod to return an error aligns with the principle of explicit error handling in Go. However, since the method always returnsnil, consider if there are scenarios where an error could actually occur. If not, this might unnecessarily complicate the method's usage. Otherwise, ensure that future implementations or overrides of this method in derived types properly handle and return meaningful errors.store/storage/pebbledb/batch.go (1)
- 44-46: Similar to the
rocksdbimplementation, theResetmethod in thepebbledbBatchstruct now returns an error, which is alwaysnil. This change introduces consistency across different database implementations. However, ensure that this pattern is necessary and that there are realistic scenarios where an error could be returned. If not, this might add unnecessary complexity to the method's usage.store/storage/sqlite/batch.go (2)
- 26-26: Adding a
db *sql.DBfield to theBatchstruct is a significant change that aligns with the need to manage SQL transactions directly within the batch operations. This change enhances the control over transaction boundaries, which is crucial for ensuring data consistency and rollback capabilities in case of errors.- 33-40: The change in the parameter name from
storagetodbin theNewBatchfunction improves clarity by explicitly indicating that the parameter is expected to be a database connection. This naming convention aligns better with common Go idioms and enhances code readability.store/internal/encoding/changeset_test.go (1)
- 10-93: The test cases provided in
TestChangesetMarshalcover various scenarios, including empty changesets, changesets with a single store, changesets with removals, and changesets with multiple stores. This comprehensive coverage ensures that the marshaling and unmarshaling logic is thoroughly tested. However, consider adding negative test cases, such as attempting to unmarshal invalid data, to ensure robust error handling.store/migration/manager_test.go (1)
- 53-53: The modification in the
setupMigrationManagerfunction to adjust the parameter order forNewManagerreflects changes in the underlying implementation. Ensure that all calls toNewManagerthroughout the test suite and the main codebase are updated accordingly to maintain consistency and prevent runtime errors.store/internal/encoding/changeset.go (2)
- 27-71: The
MarshalChangesetfunction correctly implements the encoding logic for theChangesetstruct, following the specified encoding format. The use of buffer growth optimization and error handling aligns with best practices. However, ensure that the encoding format is documented and agreed upon, as changes to this format could impact backward compatibility.- 73-125: The
UnmarshalChangesetfunction correctly decodes theChangesetfrom a byte slice, handling errors appropriately. It's crucial to ensure that the decoding logic matches the encoding format exactly to prevent data corruption or loss during the unmarshal process. Additionally, consider adding more error handling for edge cases, such as unexpected EOF or malformed data.store/storage/store.go (2)
- 137-139: The addition of the
Resetcall in theRestoremethod after writing the batch is a good practice for managing memory and ensuring that the batch is in a clean state for subsequent operations. This change improves the efficiency of batch processing during the restore operation. Ensure that error handling for theResetmethod is implemented correctly to handle any potential issues that may arise during the reset process.- 150-150: The decision to remove the call to
SetLatestVersionfrom theRestoremethod and simply returnnilat the end requires careful consideration. Ensure that the latest version is correctly managed elsewhere in the code to maintain the integrity of the versioning system. This change could have implications on the overall system behavior, especially in scenarios where the latest version needs to be accurately tracked and updated.store/store.go (1)
- 75-79: The addition of the
StartMigrationmethod to theRootStoreinterface is a significant enhancement that facilitates the migration process to new backends in version 2. This method's asynchronous nature, running in a separate goroutine, is particularly noteworthy as it allows for non-blocking migrations. Ensure that the implementation of this method includes robust error handling and logging to manage and monitor the migration process effectively.store/root/migrate_test.go (1)
- 36-84: The setup method
SetupTestis comprehensive, ensuring that all necessary components for the migration test are initialized. However, consider adding comments to describe the purpose of each block within the setup, especially for complex initializations like the creation ofmultiTrees,orgSC,ss,sc,snapshotsStore,snapshotManager, andmigrationManager. This will improve readability and maintainability.store/root/store_test.go (2)
- 55-55: The
Newfunction call in theSetupTestmethod correctly initializes theRootStorewith the necessary arguments. However, it's important to ensure that any additional arguments added to theNewfunction in future changes are also reflected here to maintain the test's validity. Keeping the test setup updated with the main codebase is crucial for accurate testing.- 71-71: The test
TestGetStateStoragecorrectly asserts the equality between theGetStateStoragemethod's return value and thestateStoragefield of theStorestruct. This test ensures that the getter method functions as expected. It's a good practice to include such tests for getter methods to verify their correctness, especially after refactoring or adding new features.store/root/store.go (2)
- 45-87: > 📝 NOTE
This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [31-58]
The introduction of migration-related fields (
migrationManager,chChangeset,chDone,isMigrating) in theStorestruct is a significant change. It's crucial to ensure that these fields are properly documented to explain their purpose and how they interact with the migration process. Additionally, consider the thread safety of these fields, especially sinceisMigratingis a boolean that might be accessed and modified from multiple goroutines.+ // migrationManager manages the state migration process from v1 to v2. + migrationManager *migration.Manager + // chChangeset is used to send changesets to the migration manager. + chChangeset chan *migration.VersionedChangeset + // chDone signals the completion of the migration process. + chDone chan struct{} + // isMigrating indicates whether a migration is currently in progress. + isMigrating bool
- 308-313: The conditional logic in the
Commitmethod to skip committing to the state storage during migration raises concerns about the consistency and availability of the latest state. Ensure that this approach does not lead to inconsistencies or hinder the ability to query the latest state during migration. Additionally, consider the implications of this logic on the overall system behavior and data integrity.
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- store/snapshots/manager_test.go (1 hunks)
Additional comments: 1
store/snapshots/manager_test.go (1)
- 237-245: The loop added for feeding chunks to the manager in the
TestManager_Restorefunction is correctly implemented. It iterates over each chunk, callsmanager.RestoreChunk(chunk), and asserts whether the restoration is done based on the chunk index. This approach effectively tests the chunk restoration process and ensures that the manager correctly handles each chunk, marking the restoration as complete after the last chunk is processed. The use ofrequire.NoError(t, err)and the conditional assertions withassert.True(t, done)orassert.False(t, done)are appropriate for verifying the expected behavior in each case.
Description
Closes: #19437
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Summary by CodeRabbit
store/v1tostore/v2, including new management structures and methods.Restoremethod inStorageStoreto correctly handle batch buffer sizes and reset batches after writing.Batchinterface and implementations across different storage systems (pebbledb,rocksdb,sqlite) to include error handling in theResetmethod.