bbe46b8c43
Signed-off-by: haoyun <yun.hao@daocloud.io> Co-authored-by: zounengren <zouyee1989@gmail.com>
98 lines
2.3 KiB
Go
98 lines
2.3 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 v2
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"os"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/containerd/containerd/namespaces"
|
|
)
|
|
|
|
type deferredPipeConnection struct {
|
|
ctx context.Context
|
|
|
|
wg sync.WaitGroup
|
|
once sync.Once
|
|
|
|
c net.Conn
|
|
conerr error
|
|
}
|
|
|
|
func (dpc *deferredPipeConnection) Read(p []byte) (n int, err error) {
|
|
if dpc.c == nil {
|
|
dpc.wg.Wait()
|
|
if dpc.c == nil {
|
|
return 0, dpc.conerr
|
|
}
|
|
}
|
|
return dpc.c.Read(p)
|
|
}
|
|
func (dpc *deferredPipeConnection) Close() error {
|
|
var err error
|
|
dpc.once.Do(func() {
|
|
dpc.wg.Wait()
|
|
if dpc.c != nil {
|
|
err = dpc.c.Close()
|
|
} else if dpc.conerr != nil {
|
|
err = dpc.conerr
|
|
}
|
|
})
|
|
return err
|
|
}
|
|
|
|
// openShimLog on Windows acts as the client of the log pipe. In this way the
|
|
// containerd daemon can reconnect to the shim log stream if it is restarted.
|
|
func openShimLog(ctx context.Context, bundle *Bundle, dialer func(string, time.Duration) (net.Conn, error)) (io.ReadCloser, error) {
|
|
ns, err := namespaces.NamespaceRequired(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
dpc := &deferredPipeConnection{
|
|
ctx: ctx,
|
|
}
|
|
dpc.wg.Add(1)
|
|
go func() {
|
|
c, conerr := dialer(
|
|
fmt.Sprintf("\\\\.\\pipe\\containerd-shim-%s-%s-log", ns, bundle.ID),
|
|
time.Second*10,
|
|
)
|
|
if conerr != nil {
|
|
dpc.conerr = fmt.Errorf("failed to connect to shim log: %w", conerr)
|
|
}
|
|
dpc.c = c
|
|
dpc.wg.Done()
|
|
}()
|
|
return dpc, nil
|
|
}
|
|
|
|
func checkCopyShimLogError(ctx context.Context, err error) error {
|
|
// When using a multi-container shim the 2nd to Nth container in the
|
|
// shim will not have a separate log pipe. Ignore the failure log
|
|
// message here when the shim connect times out.
|
|
if errors.Is(err, os.ErrNotExist) {
|
|
return nil
|
|
}
|
|
return err
|
|
}
|