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monitor: Enable to exec into the container

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Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
This commit is contained in:
Kohei Tokunaga
2023-02-14 21:16:29 +09:00
parent eefe27ff42
commit e8f55a3cf7
14 changed files with 1249 additions and 481 deletions
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28
util/ioset/ioset.go
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@ -159,15 +159,27 @@ func (f *SingleForwarder) doForward() {
var r io.ReadCloser
for {
readerInvalid := false
var readerInvalidMu sync.Mutex
copyReaderToWriter := false
if r != nil {
copyReaderToWriter = true
}
if copyReaderToWriter {
srcR := r
go func() {
buf := make([]byte, 4096)
readerClosed := false
for {
n, readErr := r.Read(buf)
if readErr != nil && !errors.Is(readErr, io.EOF) && !errors.Is(readErr, io.ErrClosedPipe) {
logrus.Debugf("single forwarder: reader error: %v", readErr)
return
n, readErr := srcR.Read(buf)
if readErr != nil {
srcR.Close()
readerClosed = true
if !errors.Is(readErr, io.EOF) && !errors.Is(readErr, io.ErrClosedPipe) {
logrus.Debugf("single forwarder: reader error: %v", readErr)
return
}
}
f.curWMu.Lock()
w := f.curW
f.curWMu.Unlock()
@ -176,10 +188,14 @@ func (f *SingleForwarder) doForward() {
logrus.Debugf("single forwarder: writer error: %v", err)
}
}
if readerInvalid {
readerInvalidMu.Lock()
ri := readerInvalid
readerInvalidMu.Unlock()
if ri || readerClosed {
return
}
if readErr != io.EOF {
logrus.Debugf("unknown error: %v\n", readErr)
continue
}
@ -202,7 +218,9 @@ func (f *SingleForwarder) doForward() {
}
f.curR = newR
r = newR
readerInvalidMu.Lock()
readerInvalid = true
readerInvalidMu.Unlock()
f.curRMu.Unlock()
case <-f.doneCh:
return