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streamhandler.go
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streamhandler.go
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package nodespace
import (
"errors"
"github.com/anyproto/any-sync/commonspace/objectsync"
"github.com/anyproto/any-sync/commonspace/spacesyncproto"
"github.com/anyproto/any-sync/net/peer"
"go.uber.org/zap"
"golang.org/x/net/context"
"storj.io/drpc"
"sync/atomic"
"time"
)
var (
errUnexpectedMessage = errors.New("unexpected message")
)
var lastMsgId = atomic.Uint64{}
type streamHandler struct {
s *service
}
func (s *streamHandler) OpenStream(ctx context.Context, p peer.Peer) (stream drpc.Stream, tags []string, err error) {
log.DebugCtx(ctx, "open outgoing stream", zap.String("peerId", p.Id()))
ctx = peer.CtxWithPeerId(ctx, p.Id())
conn, err := p.AcquireDrpcConn(ctx)
if err != nil {
return
}
if stream, err = spacesyncproto.NewDRPCSpaceSyncClient(conn).ObjectSyncStream(ctx); err != nil {
log.WarnCtx(ctx, "open outgoing stream error", zap.String("peerId", p.Id()), zap.Error(err))
return
}
log.DebugCtx(ctx, "outgoing stream opened", zap.String("peerId", p.Id()))
return
}
func (s *streamHandler) HandleMessage(ctx context.Context, peerId string, msg drpc.Message) (err error) {
syncMsg, ok := msg.(*spacesyncproto.ObjectSyncMessage)
if !ok {
err = errUnexpectedMessage
return
}
ctx = peer.CtxWithPeerId(ctx, peerId)
if syncMsg.SpaceId == "" {
return s.s.HandleMessage(ctx, peerId, syncMsg)
}
err = checkResponsible(ctx, s.s.confService, syncMsg.SpaceId)
if err != nil {
log.Debug("message sent to not responsible peer",
zap.Error(err),
zap.String("spaceId", syncMsg.SpaceId),
zap.String("peerId", peerId))
return spacesyncproto.ErrPeerIsNotResponsible
}
space, err := s.s.GetSpace(ctx, syncMsg.SpaceId)
if err != nil {
if err == spacesyncproto.ErrSpaceIsDeleted {
log.Debug("message sent to deleted space", zap.String("spaceId", syncMsg.SpaceId), zap.String("peerId", peerId))
return nil
}
return
}
err = space.HandleMessage(ctx, objectsync.HandleMessage{
Id: lastMsgId.Add(1),
Deadline: time.Now().Add(time.Minute),
SenderId: peerId,
Message: syncMsg,
PeerCtx: ctx,
})
return
}
func (s *streamHandler) NewReadMessage() drpc.Message {
// TODO: we can use sync.Pool here
return new(spacesyncproto.ObjectSyncMessage)
}