fix(tmq): [TS-7468] position is negative because overflow

[wangmm0220]

Description

Please briefly describe the code changes in this pull request.

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]

Summary of Changes

Hello @wangmm0220, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a critical bug in the TMQ client where an integer overflow could lead to negative position values. By upgrading the code variable's data type from int32_t to int64_t in key functions, the change ensures that return values and intermediate calculations can correctly handle larger numbers, thereby resolving the overflow and maintaining data integrity within the message queue's position tracking.

Highlights

• Integer Type Correction: The code variable's data type has been upgraded from int32_t to int64_t in the getCommittedFromServer and tmq_position functions. This change prevents potential integer overflow issues that could lead to negative position values, directly addressing the problem described as 'position is negative because overflow'.

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[gemini-code-assist]

Code Review

This pull request addresses a potential integer overflow bug by changing local variables from int32_t to int64_t in getCommittedFromServer and tmq_position. This ensures that 64-bit offset values, which could be large, are handled correctly, preventing them from overflowing and becoming negative. The changes are correct and effectively resolve the issue described in the pull request title. The code is clean and I have no further suggestions.