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Make container reuse safe across processes

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评估

难度
4/5
预计耗时
3-5 天
新手友好度
48/100
Issue 类型
缺陷
描述清晰度
描述清楚
活跃度
活跃
技术栈
docker, node.js, typescript
领域
devtools, testing

调研方向

Read reuseOrStartContainer in packages/testcontainers/src/generic-container/generic-container.ts and the existing withFileLock implementation in packages/testcontainers/src/common/file-lock.ts. Check the tests for reusable container startup and run the relevant test suite with multiple processes to reproduce the race. Done means concurrent callers on the same host share one container; the issue notes that #1522 and #1552 also change this function, so coordinate around that overlap.

由索引模型根据 Issue 内容生成。

描述

enhancement minor

What happens

withReuse() looks for an existing container and creates one if there is none. That lookup-then-create is guarded by an in-process lock (AsyncLock), so two processes can both find nothing and both create a container.

Test runners commonly run test files in separate processes or workers. Starting the same reusable configuration from three processes at once created two containers. The extra one is never cleaned up, because reusable containers carry no session label.

Expected

Lookup-or-create is atomic across processes on the same host, so concurrent callers end up sharing one container.

Where

reuseOrStartContainer in packages/testcontainers/src/generic-container/generic-container.ts.

Notes

  • withFileLock in packages/testcontainers/src/common/file-lock.ts already serialises Ryuk and SSHD startup across processes. The same mechanism fits here.
  • Related: #1172, where the answer was to use the test runner's global setup. That remains the better fit for one shared container, but withReuse() is also used to keep containers between runs, where the race still applies.
  • Reproduced on main (aa60a746, 12.2.0) with Docker 29.6.1.

Dependencies

  • Stack on #1522, #1552: all three rewrite reuseOrStartContainer.
主要语言
TypeScript
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  3. Fork 仓库,在一个分支上完成修改。
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