* initial prefer same data center https://github.com/seaweedfs/seaweedfs/issues/3404 * GetDataCenter * prefer same data center for ReplicationSource * GetDataCenterId * remove glog
see https://blog.aqwari.net/xml-schema-go/ 1. go get aqwari.net/xml/cmd/xsdgen 2. xsdgen -o s3api_xsd_generated.go -pkg s3api AmazonS3.xsd