3b21a9901b
Add support for terminal resizing for exec, attach, and run. Note that for Docker, exec sessions inherit the environment from the primary process, so if the container was created with tty=false, that means the exec session's TERM variable will default to "dumb". Users can override this by setting TERM=xterm (or whatever is appropriate) to get the correct "smart" terminal behavior.
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes 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 container
|
|
|
|
import (
|
|
"k8s.io/kubernetes/pkg/util/runtime"
|
|
"k8s.io/kubernetes/pkg/util/term"
|
|
)
|
|
|
|
// handleResizing spawns a goroutine that processes the resize channel, calling resizeFunc for each
|
|
// term.Size received from the channel. The resize channel must be closed elsewhere to stop the
|
|
// goroutine.
|
|
func HandleResizing(resize <-chan term.Size, resizeFunc func(size term.Size)) {
|
|
if resize == nil {
|
|
return
|
|
}
|
|
|
|
go func() {
|
|
defer runtime.HandleCrash()
|
|
|
|
for {
|
|
size, ok := <-resize
|
|
if !ok {
|
|
return
|
|
}
|
|
if size.Height < 1 || size.Width < 1 {
|
|
continue
|
|
}
|
|
resizeFunc(size)
|
|
}
|
|
}()
|
|
}
|