Feat/3.0/TS-7230

[xiao-77]

Description

Please briefly describe the code changes in this pull request.

Jira: https://jira.taosdata.com:18080/browse/TD-

Checklist

Please check the items in the checklist if applicable.

• [ ] Is the user manual updated?
• [ ] Are the test cases passed and automated?
• [ ] Is there no significant decrease in test coverage?

[gemini-code-assist[bot]]

Summary of Changes

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This pull request introduces a robust multi-layer encryption key management system, primarily targeting enterprise features. It establishes a secure and automated mechanism for dnodes to synchronize their encryption keys with mnodes, ensuring data consistency and security across the cluster. The changes involve defining new communication protocols, implementing client and server-side logic for key exchange, and updating the key loading process to support the new encryption architecture while maintaining compatibility with existing setups.

Highlights

• Multi-Layer Encryption Key Definitions: Introduced a comprehensive set of global variables in include/common/tglobal.h and initialized in source/common/src/tglobal.c to support multi-layer encryption. These include flags for TAOSK encryption usage, server, database, config, metadata, and data keys, algorithm type, file format version, key update version, creation timestamps, and enabled flags for various key types.
• Key Synchronization Messaging: Defined new message types TDMT_MND_ENCRYPT_KEY and TDMT_MND_KEY_SYNC in include/common/tmsgdef.h. Corresponding SKeySyncReq and SKeySyncRsp structures, along with their serialization and deserialization functions, were added in include/common/tmsg.h and implemented in source/common/src/msg/tmsg.c to facilitate key exchange between dnodes and mnodes.
• Dnode Key Synchronization Logic: Implemented a new keySyncThread within the dnode management (SDnodeMgmt) in source/dnode/mgmt/mgmt_dnode/inc/dmInt.h and source/dnode/mgmt/mgmt_dnode/src/dmWorker.c. This thread periodically sends key synchronization requests (SKeySyncReq) to the mnode and processes the responses (SKeySyncRsp), updating local encryption keys if necessary. This ensures dnodes have the most current encryption keys from the mnode.
• Mnode Key Synchronization Handling: The mnode now includes a handler (mndProcessKeySyncReq in source/dnode/mnode/impl/src/mndConfig.c) for TDMT_MND_KEY_SYNC messages. It loads the mnode's encryption keys and responds to dnodes, providing updated keys if the dnode's local key version is outdated.
• Enhanced Encryption Key Loading: Modified the dmGetEncryptKey function in source/dnode/mgmt/node_util/src/dmFile.c to prioritize loading multi-layer encryption keys from a taosk encrypt.bin file. If this new format is not found or fails to load, it gracefully falls back to the legacy encryptCode.cfg format, ensuring backward compatibility.
• Conditional Enterprise Features: Updated CMakeLists.txt files across dnode/mgmt and dnode/mnode modules to conditionally include TAOSK-related headers and functionality only when TD_ENTERPRISE is defined, ensuring that these encryption features are specific to the enterprise edition.

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