mirror of
https://github.com/ceph/ceph-csi.git
synced 2025-03-10 01:19:29 +00:00
f87d06ed85
Several packages are only used while running the e2e suite. These packages are less important to update, as the they can not influence the final executable that is part of the Ceph-CSI container-image. By moving these dependencies out of the main Ceph-CSI go.mod, it is easier to identify if a reported CVE affects Ceph-CSI, or only the testing (like most of the Kubernetes CVEs). Signed-off-by: Niels de Vos <ndevos@ibm.com>
120 lines
3.2 KiB
Go
120 lines
3.2 KiB
Go
/*
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Copyright 2016 The Kubernetes 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 remotecommand
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import (
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"encoding/json"
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"errors"
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"fmt"
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"strconv"
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"sync"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/remotecommand"
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"k8s.io/client-go/util/exec"
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)
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// streamProtocolV4 implements version 4 of the streaming protocol for attach
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// and exec. This version adds support for exit codes on the error stream through
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// the use of metav1.Status instead of plain text messages.
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type streamProtocolV4 struct {
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*streamProtocolV3
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}
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var _ streamProtocolHandler = &streamProtocolV4{}
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func newStreamProtocolV4(options StreamOptions) streamProtocolHandler {
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return &streamProtocolV4{
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streamProtocolV3: newStreamProtocolV3(options).(*streamProtocolV3),
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}
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}
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func (p *streamProtocolV4) createStreams(conn streamCreator) error {
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return p.streamProtocolV3.createStreams(conn)
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}
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func (p *streamProtocolV4) handleResizes() {
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p.streamProtocolV3.handleResizes()
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}
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func (p *streamProtocolV4) stream(conn streamCreator) error {
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if err := p.createStreams(conn); err != nil {
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return err
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}
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// now that all the streams have been created, proceed with reading & copying
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errorChan := watchErrorStream(p.errorStream, &errorDecoderV4{})
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p.handleResizes()
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p.copyStdin()
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var wg sync.WaitGroup
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p.copyStdout(&wg)
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p.copyStderr(&wg)
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// we're waiting for stdout/stderr to finish copying
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wg.Wait()
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// waits for errorStream to finish reading with an error or nil
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return <-errorChan
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}
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// errorDecoderV4 interprets the json-marshaled metav1.Status on the error channel
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// and creates an exec.ExitError from it.
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type errorDecoderV4 struct{}
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func (d *errorDecoderV4) decode(message []byte) error {
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status := metav1.Status{}
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err := json.Unmarshal(message, &status)
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if err != nil {
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return fmt.Errorf("error stream protocol error: %v in %q", err, string(message))
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}
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switch status.Status {
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case metav1.StatusSuccess:
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return nil
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case metav1.StatusFailure:
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if status.Reason == remotecommand.NonZeroExitCodeReason {
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if status.Details == nil {
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return errors.New("error stream protocol error: details must be set")
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}
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for i := range status.Details.Causes {
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c := &status.Details.Causes[i]
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if c.Type != remotecommand.ExitCodeCauseType {
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continue
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}
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rc, err := strconv.ParseUint(c.Message, 10, 8)
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if err != nil {
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return fmt.Errorf("error stream protocol error: invalid exit code value %q", c.Message)
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}
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return exec.CodeExitError{
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Err: fmt.Errorf("command terminated with exit code %d", rc),
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Code: int(rc),
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}
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}
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return fmt.Errorf("error stream protocol error: no %s cause given", remotecommand.ExitCodeCauseType)
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}
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default:
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return errors.New("error stream protocol error: unknown error")
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}
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return errors.New(status.Message)
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}
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