package s3api import ( "github.com/seaweedfs/seaweedfs/weed/filer" "github.com/seaweedfs/seaweedfs/weed/glog" "github.com/seaweedfs/seaweedfs/weed/pb" "github.com/seaweedfs/seaweedfs/weed/pb/filer_pb" "github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants" "github.com/seaweedfs/seaweedfs/weed/util" ) func (s3a *S3ApiServer) subscribeMetaEvents(clientName string, prefix string, lastTsNs int64) { processEventFn := func(resp *filer_pb.SubscribeMetadataResponse) error { message := resp.EventNotification if message.NewEntry == nil { return nil } dir := resp.Directory if message.NewParentPath != "" { dir = message.NewParentPath } fileName := message.NewEntry.Name content := message.NewEntry.Content _ = s3a.onIamConfigUpdate(dir, fileName, content) _ = s3a.onCircuitBreakerConfigUpdate(dir, fileName, content) return nil } var clientEpoch int32 util.RetryForever("followIamChanges", func() error { clientEpoch++ return pb.WithFilerClientFollowMetadata(s3a, clientName, s3a.randomClientId, clientEpoch, prefix, &lastTsNs, 0, 0, processEventFn, pb.FatalOnError) }, func(err error) bool { glog.V(0).Infof("iam follow metadata changes: %v", err) return true }) } //reload iam config func (s3a *S3ApiServer) onIamConfigUpdate(dir, filename string, content []byte) error { if dir == filer.IamConfigDirectory && filename == filer.IamIdentityFile { if err := s3a.iam.LoadS3ApiConfigurationFromBytes(content); err != nil { return err } glog.V(0).Infof("updated %s/%s", dir, filename) } return nil } //reload circuit breaker config func (s3a *S3ApiServer) onCircuitBreakerConfigUpdate(dir, filename string, content []byte) error { if dir == s3_constants.CircuitBreakerConfigDir && filename == s3_constants.CircuitBreakerConfigFile { if err := s3a.cb.LoadS3ApiConfigurationFromBytes(content); err != nil { return err } glog.V(0).Infof("updated %s/%s", dir, filename) } return nil }