feat: GaussDB plugin support + plugin connectivity timeout (CE) #2758

[actiontech-bot]

User description

Summary

• Register DriverTypeGaussDB = "GaussDB" in sqle/driver/v2/util.go so the new GaussDB audit plugin can be discovered by SQLE.
• Harden CheckInstanceIsConnectable with a 60 s total timeout plus a bounded 45 s gRPC deadline on plugin.Init, preventing the data-source connectivity test from hanging indefinitely (observed on Huawei Cloud GaussDB during private SCRAM auth). The fix is plugin-agnostic so it provides defence-in-depth for any future plugin with the same class of bug.
• Add unit tests under sqle/common/instance_test.go covering the timeout constant range and ctx cancellation contract on Ping.

Test plan

• go vet -mod=vendor ./sqle/common/... ./sqle/driver/...
• go test -mod=vendor ./sqle/common/...
• CI pipelines on the PR

Refs https://github.com/actiontech/sqle-ee/issues/2758

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Description

• 添加 DriverTypeGaussDB 常量

• 扩展驱动类型列表支持 GaussDB 插件注册

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File Walkthrough

	Relevant files
Enhancement	util.go 添加 GaussDB 常量支持                                                                                    sqle/driver/v2/util.go 新增 DriverTypeGaussDB 常量，值为 "GaussDB" 扩展驱动类型列表，支持 GaussDB 审计插件注册 +1/-0

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PR Reviewer Guide 🔍

(Review updated until commit 42f9c73)

🎫 Ticket compliance analysis 🔶 2758 - Partially compliant Compliant requirements: 已完成自测 在关联 issue 中补充实现方案 在关联 issue 中补充测试影响面 确认变更兼容性 确认是否需要更新文档 Non-compliant requirements: {} Requires further human verification: {}

⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ No major issues detected

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PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Possible issue	支持超时取消 建议在启动新 goroutine 时检测传入的 ctx 是否已超时，并尽量将 ctx 传入 NewDriverManagerWithoutAudit，以便在超时情况下及时中止耗时操作，防止插件初始化过程中可能出现的资源泄露问题。如果 ctx 已取消，应主动返回超时错误，而不是让 goroutine 块在那里等待。 sqle/common/instance.go [34-37] go func() { - p, err := NewDriverManagerWithoutAudit(log.NewEntry(), instance, "") - resultCh <- openResult{plugin: p, err: err} + select { + case <-ctx.Done(): + resultCh <- openResult{plugin: nil, err: ctx.Err()} + default: + p, err := NewDriverManagerWithoutAudit(log.NewEntry(), instance, "") + resultCh <- openResult{plugin: p, err: err} + } }() Suggestion importance[1-10]: 4 __ Why: The suggestion wraps the goroutine with a context cancellation check, but the outer select on ctx.Done() already handles a timeout scenario. Adding an extra check inside the goroutine introduces complexity without a clear benefit, and it slightly changes the intended control flow.	Low

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Persistent review updated to latest commit 42f9c73

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