mirror of https://github.com/docker/compose.git
62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
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/*
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Copyright 2020 Docker Compose CLI authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package streams
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import (
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"github.com/golang/protobuf/ptypes"
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streamsv1 "github.com/docker/compose-cli/protos/streams/v1"
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)
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// IO implements an io.ReadWriter that forwards everything to the stream
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type IO struct {
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Stream *Stream
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}
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func (io *IO) Read(p []byte) (int, error) {
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a, err := io.Stream.Recv()
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if err != nil {
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return 0, err
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}
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var m streamsv1.BytesMessage
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err = ptypes.UnmarshalAny(a, &m)
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if err != nil {
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return 0, err
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}
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return copy(p, m.Value), nil
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}
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func (io *IO) Write(p []byte) (n int, err error) {
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if len(p) == 0 {
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return 0, nil
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}
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message := streamsv1.BytesMessage{
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Type: streamsv1.IOStream_STDOUT,
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Value: p,
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}
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m, err := ptypes.MarshalAny(&message)
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if err != nil {
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return 0, err
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}
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return len(message.Value), io.Stream.SendMsg(m)
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}
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