Varian_米泽 a2cb38f62b
fix: prevent concurrent subagent file write conflicts in sandbox tools (#1714)
* fix: prevent concurrent subagent file write conflicts

Serialize same-path str_replace operations in sandbox tools

Guard AioSandbox write_file/update_file with the existing sandbox lock

Add regression tests for concurrent str_replace and append races

Verify with backend full tests and ruff lint checks

* fix(sandbox): Fix the concurrency issue of file operations on the same path in isolated sandboxes.

Ensure that different sandbox instances use independent locks for file operations on the same virtual path to avoid concurrency conflicts. Change the lock key from a single path to a composite key of (sandbox.id, path), and add tests to verify the concurrent safety of isolated sandboxes.

* feat(sandbox): Extract file operation lock logic to standalone module and fix concurrency issues

Extract file operation lock related logic from tools.py into a separate file_operation_lock.py module.
Fix data race issues during concurrent str_replace and write_file operations.
2026-04-02 15:39:41 +08:00
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