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Chris Lu
8517cebb31
Address review suggestions for better thread safety and code clarity: 1. **Thread Safety**: Add RWMutex to FilerEtcStore - Protects filerAddressFunc and grpcDialOption from concurrent access - Initialize() uses write lock when setting function - SetFilerAddressFunc() uses write lock - withFilerClient() uses read lock to get function and dial option - GetPolicies() uses read lock to check if configured 2. **Improved Error Messages**: - Prefix errors with "filer_etc:" for easier debugging - "filer address not configured" → "filer_etc: filer address function not configured" - "filer address is empty" → "filer_etc: filer address is empty" 3. **Clarified Comments**: - auth_credentials.go: Clarify that initial setup is temporary - Document that it's updated in s3api_server.go after FilerClient creation - Remove ambiguity about when FilerClient.GetCurrentFiler is used Benefits: - Safe for concurrent credential operations - Clear error messages for debugging - Explicit documentation of initialization order