Transaction #40
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Transaction #40
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Corrected the way the buffer manager policy is called in `logmgr.go`. The change ensures the correct method is used to allocate buffers for log blocks.
Refactor transaction manager to improve code style and add functionality. Added error handling and improved concurrency control. Added FindCell and InsertCell functions.
Improve the transaction manager and buffer list by refactoring the Pin, UnPin, and Buffer functions. Add error handling and improve the overall design for better efficiency and clarity. Also, simplify the FindCell and InsertCell functions in transactionMgr.go.
…saction management
…record creation
…transaction manager
Renamed `GetFileName` method to `FileName` for better readability and consistency. Updated all references to the renamed method. (transaction)
Add a method to access the internal buffer of the LogMgr struct. This allows external access to the buffer for inspection or manipulation.
Refactor concurrency management to use a more robust and thread-safe implementation. Move the `ConcurrencyMgr` to the `concurrency` package. Add shared and exclusive locking mechanisms with error handling and a release method. Implement two-phase locking protocol.
Refactor lock table to use time.Second for timeout and improve error messages. Add unlock functionality and GetLockInfo helper method. Change package name from transaction to concurrency.
This commit implements a new log record type, `UnifiedUpdateRecord`, for handling unified updates in the logging system. It includes serialization and deserialization methods, as well as an `Undo` method for transaction rollback. The `CreateLogRecord` function is updated to handle this new record type. The old `log_record.go` file has been removed and replaced with a new, improved version.
Corrected the method used to retrieve the block filename in LogIterator. The `GetFileName` method was replaced with `FileName` for accuracy.
This commit implements a recovery manager that handles logging, commit, rollback, and recovery operations for transactions. The `recoveryMgr.go` file in the `recovery` package now contains the implementation. The previous `recoveryMgr.go` file in the `transaction` package has been removed. The recovery manager uses unified log records to efficiently handle undo and redo operations.
This commit refactors the transaction management and logging system. The `LogRecord` interface is enhanced to include new operation types. The `TransactionMgr` is updated to use the new `recovery` and `concurrency` packages, improving concurrency control and recovery mechanisms. The `ITransaction` interface is moved to a new `transaction_interface` package. Error handling is improved throughout the codebase.
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