mirror of https://github.com/k3s-io/k3s
59 lines
2.0 KiB
Go
59 lines
2.0 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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"errors"
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"fmt"
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"io"
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"net/http"
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"time"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/types"
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"k8s.io/kubernetes/pkg/util/runtime"
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"k8s.io/kubernetes/pkg/util/term"
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)
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// Executor knows how to execute a command in a container in a pod.
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type Executor interface {
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// ExecInContainer executes a command in a container in the pod, copying data
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// between in/out/err and the container's stdin/stdout/stderr.
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ExecInContainer(name string, uid types.UID, container string, cmd []string, in io.Reader, out, err io.WriteCloser, tty bool, resize <-chan term.Size) error
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}
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// ServeExec handles requests to execute a command in a container. After
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// creating/receiving the required streams, it delegates the actual execution
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// to the executor.
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func ServeExec(w http.ResponseWriter, req *http.Request, executor Executor, podName string, uid types.UID, container string, idleTimeout, streamCreationTimeout time.Duration, supportedProtocols []string) {
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ctx, ok := createStreams(req, w, supportedProtocols, idleTimeout, streamCreationTimeout)
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if !ok {
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// error is handled by createStreams
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return
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}
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defer ctx.conn.Close()
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cmd := req.URL.Query()[api.ExecCommandParamm]
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err := executor.ExecInContainer(podName, uid, container, cmd, ctx.stdinStream, ctx.stdoutStream, ctx.stderrStream, ctx.tty, ctx.resizeChan)
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if err != nil {
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msg := fmt.Sprintf("error executing command in container: %v", err)
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runtime.HandleError(errors.New(msg))
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fmt.Fprint(ctx.errorStream, msg)
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}
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}
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