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package s3api
import (
"context"
"fmt"
"github.com/chrislusf/seaweedfs/weed/filer"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"io"
"time"
)
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 {
if err := s3a.iam.loadS3ApiConfigurationFromBytes(message.NewEntry.Content); err != nil {
return err
}
glog.V(0).Infof("updated %s/%s", filer.IamConfigDirecotry, filer.IamIdentityFile)
}
return nil
}
for {
err := s3a.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
stream, err := client.SubscribeMetadata(ctx, &filer_pb.SubscribeMetadataRequest{
ClientName: clientName,
PathPrefix: prefix,
SinceNs: lastTsNs,
})
if err != nil {
return fmt.Errorf("subscribe: %v", err)
}
for {
resp, listenErr := stream.Recv()
if listenErr == io.EOF {
return nil
}
if listenErr != nil {
return listenErr
}
if err := processEventFn(resp); err != nil {
glog.Fatalf("process %v: %v", resp, err)
}
lastTsNs = resp.TsNs
}
})
if err != nil {
glog.Errorf("subscribing filer meta change: %v", err)
}
time.Sleep(time.Second)
}
}
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