seaweedfs/weed/s3api/auth_credentials_subscribe.go

package s3api

import (
	"github.com/chrislusf/seaweedfs/weed/filer"
	"github.com/chrislusf/seaweedfs/weed/glog"
	"github.com/chrislusf/seaweedfs/weed/pb"
	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
	"github.com/chrislusf/seaweedfs/weed/util"
)

func (s3a *S3ApiServer) subscribeMetaEvents(clientName string, prefix string, lastTsNs int64) error {

	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
		}
		if dir == filer.IamConfigDirecotry && message.NewEntry.Name == filer.IamIdentityFile {
			err := util.Retry("updateIamIdentity", func() error {
				return s3a.iam.loadS3ApiConfigurationFromBytes(message.NewEntry.Content)
			})
			if err != nil {
				return err
			}
			glog.V(0).Infof("updated %s/%s", filer.IamConfigDirecotry, filer.IamIdentityFile)
		}

		return nil
	}

	return util.Retry("followIamChanges", func() error {
		return pb.WithFilerClientFollowMetadata(s3a, clientName, prefix, lastTsNs, 0, processEventFn, true)
	})

}