[host]: ping syncSignature per-host to prevent queue serialization

[ZStack-Robot]

Resolves: ZSTAC-80543

sync from gitlab !9839

[coderabbitai]

概述

Ping任务的同步签名从全局常量改为包含目标主机UUID的动态值，使不同主机的Ping任务可独立并发调度。新增测试类验证同签名任务序列执行和异签名任务并发执行的行为。

变更

每主机Ping任务同步

层级 / 文件	摘要
Ping任务每主机同步签名 compute/src/main/java/org/zstack/compute/host/HostBase.java	ChainTask同步签名从常量"do-ping-host"改为动态值String.format("do-ping-host-%s", msg.getHostUuid())，使Ping任务的调度键包含目标主机UUID。
同步签名行为测试 test/src/test/java/org/zstack/test/core/thread/TestDispatchQueuePerHostSignature.java	新增测试类包含OrderedTask实现SyncTask接口的助手类，setUp方法初始化ThreadFacade，sameSignatureSerializes验证同签名任务序列执行，differentSignatureConcurrent验证异签名任务并发执行。

代码审查工作量估计

🎯 2 (简单) | ⏱️ ~10 分钟

诗

🐰 一个主机一个键，
Ping任务各自安，
序列并发分得清，
测试验证逻辑坚，
调度繁忙不混乱。

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	标题遵循了要求的格式 '[scope]: '，且长度为66个字符，不超过72个字符的限制。标题清晰地描述了主要变更内容：将ping操作的同步签名改为按主机级别，以防止队列序列化。
Description check	✅ Passed	拉取请求描述与变更集相关，提供了JIRA issue编号（ZSTAC-80543）和GitLab同步信息，这些都与代码变更相关联。
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch sync/songtao.liu/fix/ZSTAC-80543-v2

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[coderabbitai]

🧹 Nitpick comments (1)

test/src/test/java/org/zstack/test/core/thread/TestDispatchQueuePerHostSignature.java (1)

20-20: ⚡ Quick win

测试类命名不符合仓库规范。

Line 20 的类名 TestDispatchQueuePerHostSignature 未以 Test 或 Case 结尾，建议改为 DispatchQueuePerHostSignatureTest，并同步文件名。
As per coding guidelines “测试类需要以 Test 或 Case 结尾。”

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In
`@test/src/test/java/org/zstack/test/core/thread/TestDispatchQueuePerHostSignature.java`
at line 20, Rename the test class TestDispatchQueuePerHostSignature to follow
the repository convention by changing the class name to
DispatchQueuePerHostSignatureTest and update the containing Java file name
accordingly; ensure all references to TestDispatchQueuePerHostSignature in
imports, test suites, or build configs are updated to the new class name to
avoid compilation failures.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Nitpick comments:
In
`@test/src/test/java/org/zstack/test/core/thread/TestDispatchQueuePerHostSignature.java`:
- Line 20: Rename the test class TestDispatchQueuePerHostSignature to follow the
repository convention by changing the class name to
DispatchQueuePerHostSignatureTest and update the containing Java file name
accordingly; ensure all references to TestDispatchQueuePerHostSignature in
imports, test suites, or build configs are updated to the new class name to
avoid compilation failures.

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📥 Commits

Reviewing files that changed from the base of the PR and between 57a496a and ad52e6f.

📒 Files selected for processing (2)

• compute/src/main/java/org/zstack/compute/host/HostBase.java
• test/src/test/java/org/zstack/test/core/thread/TestDispatchQueuePerHostSignature.java