87 lines
2.2 KiB
Go
87 lines
2.2 KiB
Go
/*
|
|
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 containerd
|
|
|
|
import (
|
|
"context"
|
|
|
|
streamingapi "github.com/containerd/containerd/api/services/streaming/v1"
|
|
transferapi "github.com/containerd/containerd/api/services/transfer/v1"
|
|
"github.com/containerd/containerd/pkg/streaming"
|
|
"github.com/containerd/containerd/pkg/transfer"
|
|
"github.com/containerd/containerd/pkg/transfer/proxy"
|
|
"github.com/containerd/containerd/protobuf"
|
|
"github.com/containerd/typeurl"
|
|
)
|
|
|
|
func (c *Client) Transfer(ctx context.Context, src interface{}, dest interface{}, opts ...transfer.Opt) error {
|
|
return proxy.NewTransferer(transferapi.NewTransferClient(c.conn), c.streamCreator()).Transfer(ctx, src, dest, opts...)
|
|
}
|
|
|
|
func (c *Client) streamCreator() streaming.StreamCreator {
|
|
return &streamCreator{
|
|
client: streamingapi.NewStreamingClient(c.conn),
|
|
}
|
|
}
|
|
|
|
type streamCreator struct {
|
|
client streamingapi.StreamingClient
|
|
}
|
|
|
|
func (sc *streamCreator) Create(ctx context.Context, id string) (streaming.Stream, error) {
|
|
stream, err := sc.client.Stream(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
a, err := typeurl.MarshalAny(&streamingapi.StreamInit{
|
|
ID: id,
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = stream.Send(protobuf.FromAny(a))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Receive an ack that stream is init and ready
|
|
if _, err = stream.Recv(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &clientStream{
|
|
s: stream,
|
|
}, nil
|
|
}
|
|
|
|
type clientStream struct {
|
|
s streamingapi.Streaming_StreamClient
|
|
}
|
|
|
|
func (cs *clientStream) Send(a typeurl.Any) error {
|
|
return cs.s.Send(protobuf.FromAny(a))
|
|
}
|
|
|
|
func (cs *clientStream) Recv() (typeurl.Any, error) {
|
|
return cs.s.Recv()
|
|
}
|
|
|
|
func (cs *clientStream) Close() error {
|
|
return cs.s.CloseSend()
|
|
}
|