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James-LeongandClaude Opus 4.7
171c7cd8d7
start_tunnel() and start_chain() had a check-then-act race condition: multiple concurrent callers could all see an empty cache and each spawn a new SSH tunnel. The tunnel that lost the insert race was orphaned, causing queries routed through it to fail. Use double-check locking with stale entry eviction: hold the lock for the cache lookup, release it during the slow SSH handshake, then re-check under the lock before inserting. If another caller already created the tunnel, abort the duplicate and return the existing port. Also check handle liveness on cache hits so that callers don't get a dead port back when the background tunnel task has exited. Add a matching re-check in the MongoDB connection pool creation path. Add idle_timeout_secs connection option (default 60s) to preempt server-side connection idle timeouts that cause "unexpected end of file" errors on pooled MongoDB connections. Reject MongoDB queries in the generic SQL execution path before any pool or session-key creation. Previously, a typo in a MongoDB shell command would fall through to executeMulti / execute_sql_statement, which called get_or_create_pool_for_session and leaked a session-scoped MongoDB Client (and SSH tunnel resources) before eventually returning "Use MongoDB-specific commands". Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>