feat: prevent multiple servers on the same index directory#26
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Add an exclusive file lock (serve.lock) acquired at server startup using the fs2 crate. If another tgrep server already holds the lock, the second server exits immediately with a clear error message including the existing server's PID and port. The lock is held for the lifetime of the server process and automatically released on exit (normal shutdown, crash, or kill). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Summary
Prevents multiple
tgrep serveinstances from running on the same index directory, which could cause index corruption andserve.jsonoverwrites.Changes
try_acquire_server_lock()using fs2 crate for cross-platform exclusive file locking onserve.lockBehavior
When a second server attempts to start on the same index directory:
The lock is held for the server lifetime and automatically released on exit (normal, crash, or kill).