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streamer.go
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streamer.go
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/*
Copyright 2018 The KubeVirt Authors.
Copyright 2024 Flant JSC.
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.
Initially copied from https://github.com/kubevirt/kubevirt/blob/main/staging/src/kubevirt.io/client-go/kubecli/streamer.go
*/
package kubeclient
import (
"net"
"time"
"github.com/gorilla/websocket"
)
type wsStreamer struct {
conn *websocket.Conn
done chan struct{}
}
func (ws *wsStreamer) streamDone() {
close(ws.done)
}
func (ws *wsStreamer) Stream(options StreamOptions) error {
copyErr := make(chan error, 1)
go func() {
_, err := CopyTo(ws.conn, options.In)
copyErr <- err
}()
go func() {
_, err := CopyFrom(options.Out, ws.conn)
copyErr <- err
}()
defer ws.streamDone()
return <-copyErr
}
func (ws *wsStreamer) AsConn() net.Conn {
return &wsConn{
Conn: ws.conn,
binaryReader: &binaryReader{conn: ws.conn},
binaryWriter: &binaryWriter{conn: ws.conn},
}
}
type wsConn struct {
*websocket.Conn
*binaryReader
*binaryWriter
}
func (c *wsConn) SetDeadline(t time.Time) error {
if err := c.Conn.SetWriteDeadline(t); err != nil {
return err
}
return c.Conn.SetReadDeadline(t)
}
func NewWebsocketStreamer(conn *websocket.Conn, done chan struct{}) *wsStreamer {
return &wsStreamer{
conn: conn,
done: done,
}
}