| /* |
| Copyright 2016 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 remotecommand |
| |
| import ( |
| "fmt" |
| "io" |
| "net/http" |
| "time" |
| |
| apierrors "k8s.io/apimachinery/pkg/api/errors" |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| "k8s.io/apimachinery/pkg/types" |
| "k8s.io/apimachinery/pkg/util/runtime" |
| "k8s.io/client-go/tools/remotecommand" |
| ) |
| |
| // Attacher knows how to attach to a running container in a pod. |
| type Attacher interface { |
| // AttachContainer attaches to the running container in the pod, copying data between in/out/err |
| // and the container's stdin/stdout/stderr. |
| AttachContainer(name string, uid types.UID, container string, in io.Reader, out, err io.WriteCloser, tty bool, resize <-chan remotecommand.TerminalSize) error |
| } |
| |
| // ServeAttach handles requests to attach to a container. After creating/receiving the required |
| // streams, it delegates the actual attaching to attacher. |
| func ServeAttach(w http.ResponseWriter, req *http.Request, attacher Attacher, podName string, uid types.UID, container string, streamOpts *Options, idleTimeout, streamCreationTimeout time.Duration, supportedProtocols []string) { |
| ctx, ok := createStreams(req, w, streamOpts, supportedProtocols, idleTimeout, streamCreationTimeout) |
| if !ok { |
| // error is handled by createStreams |
| return |
| } |
| defer ctx.conn.Close() |
| |
| err := attacher.AttachContainer(podName, uid, container, ctx.stdinStream, ctx.stdoutStream, ctx.stderrStream, ctx.tty, ctx.resizeChan) |
| if err != nil { |
| err = fmt.Errorf("error attaching to container: %v", err) |
| runtime.HandleError(err) |
| ctx.writeStatus(apierrors.NewInternalError(err)) |
| } else { |
| ctx.writeStatus(&apierrors.StatusError{ErrStatus: metav1.Status{ |
| Status: metav1.StatusSuccess, |
| }}) |
| } |
| } |