diff --git a/pkg/transfer/proxy/transfer.go b/pkg/transfer/proxy/transfer.go new file mode 100644 index 000000000..fcfd78720 --- /dev/null +++ b/pkg/transfer/proxy/transfer.go @@ -0,0 +1,63 @@ +/* + Copyright The containerd Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +package proxy + +import ( + "context" + + transferapi "github.com/containerd/containerd/api/services/transfer/v1" + "github.com/containerd/containerd/pkg/transfer" + "github.com/containerd/typeurl" + "google.golang.org/protobuf/types/known/anypb" +) + +type proxyTransferer struct { + client transferapi.TransferClient +} + +// NewTransferer returns a new transferr which communicates over a GRPC +// connection using the containerd transfer API +func NewTransferer(client transferapi.TransferClient) transfer.Transferer { + return &proxyTransferer{ + client: client, + } +} + +func (p *proxyTransferer) Transfer(ctx context.Context, src interface{}, dst interface{}, opts ...transfer.Opt) error { + asrc, err := typeurl.MarshalAny(src) + if err != nil { + return err + } + adst, err := typeurl.MarshalAny(dst) + if err != nil { + return err + } + // Resolve opts to + req := &transferapi.TransferRequest{ + Source: &anypb.Any{ + TypeUrl: asrc.GetTypeUrl(), + Value: asrc.GetValue(), + }, + Destination: &anypb.Any{ + TypeUrl: adst.GetTypeUrl(), + Value: adst.GetValue(), + }, + // TODO: Options + } + _, err = p.client.Transfer(ctx, req) + return err +}