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
see https://blog.aqwari.net/xml-schema-go/
1. go get aqwari.net/xml/cmd/xsdgen
2. Add EncodingType element for ListBucketResult in AmazonS3.xsd
3. xsdgen -o s3api_xsd_generated.go -pkg s3api AmazonS3.xsd
4. Remove empty Grantee struct in s3api_xsd_generated.go
5. Remove xmlns: sed s'/http:\/\/s3.amazonaws.com\/doc\/2006-03-01\/\ //' s3api_xsd_generated.go
Chris Lu
8517cebb31