mirror of https://github.com/docker/compose.git
89 lines
2.1 KiB
Go
89 lines
2.1 KiB
Go
/*
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Copyright 2020 Docker, Inc.
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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 cmd
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import (
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"context"
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"fmt"
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"os"
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"strings"
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"github.com/containerd/console"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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"github.com/docker/api/client"
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"github.com/docker/api/containers"
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)
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type execOpts struct {
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tty bool
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interactive bool
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}
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// ExecCommand runs a command in a running container
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func ExecCommand() *cobra.Command {
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var opts execOpts
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cmd := &cobra.Command{
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Use: "exec",
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Short: "Run a command in a running container",
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Args: cobra.MinimumNArgs(2),
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RunE: func(cmd *cobra.Command, args []string) error {
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return runExec(cmd.Context(), opts, args[0], strings.Join(args[1:], " "))
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},
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}
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cmd.Flags().BoolVarP(&opts.tty, "tty", "t", false, "Allocate a pseudo-TTY")
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cmd.Flags().BoolVarP(&opts.interactive, "interactive", "i", false, "Keep STDIN open even if not attached")
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return cmd
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}
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func runExec(ctx context.Context, opts execOpts, name string, command string) error {
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c, err := client.New(ctx)
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if err != nil {
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return errors.Wrap(err, "cannot connect to backend")
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}
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request := containers.ExecRequest{
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Command: command,
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Tty: opts.tty,
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Interactive: opts.interactive,
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Stdin: os.Stdin,
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Stdout: os.Stdout,
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Stderr: os.Stderr,
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}
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if opts.tty {
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con := console.Current()
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if err := con.SetRaw(); err != nil {
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return err
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}
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defer func() {
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if err := con.Reset(); err != nil {
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fmt.Println("Unable to close the console")
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}
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}()
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request.Stdin = con
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request.Stdout = con
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request.Stderr = con
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}
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return c.ContainerService().Exec(ctx, name, request)
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}
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