/*

Copyright 2020 Docker Compose CLI 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 compose

import (

"context"

"errors"

"fmt"

"os"

"github.com/compose-spec/compose-go/v2/types"

"github.com/docker/cli/cli"

"github.com/docker/cli/cli/command"

"github.com/docker/compose/v2/pkg/api"

"github.com/docker/compose/v2/pkg/compose"

"github.com/sirupsen/logrus"

"github.com/spf13/cobra"

"github.com/spf13/pflag"

)

type execOpts struct {

*composeOptions

service string

command []string

environment []string

workingDir string

noTty bool

user string

detach bool

index int

privileged bool

interactive bool

}

func execCommand(p *ProjectOptions, dockerCli command.Cli, backend api.Compose) *cobra.Command {

opts := execOpts{

composeOptions: &composeOptions{

ProjectOptions: p,

},

}

runCmd := &cobra.Command{

Use: "exec [OPTIONS] SERVICE COMMAND [ARGS...]",

Short: "Execute a command in a running container",

Args: cobra.MinimumNArgs(2),

PreRunE: Adapt(func(ctx context.Context, args []string) error {

opts.service = args[0]

opts.command = args[1:]

return nil

}),

RunE: Adapt(func(ctx context.Context, args []string) error {

err := runExec(ctx, dockerCli, backend, opts)

if err != nil {

logrus.Debugf("%v", err)

var cliError cli.StatusError

if ok := errors.As(err, &cliError); ok {

os.Exit(err.(cli.StatusError).StatusCode) //nolint: errorlint

}

}

return err

}),

ValidArgsFunction: completeServiceNames(dockerCli, p),

}

runCmd.Flags().BoolVarP(&opts.detach, "detach", "d", false, "Detached mode: Run command in the background")

runCmd.Flags().StringArrayVarP(&opts.environment, "env", "e", []string{}, "Set environment variables")

runCmd.Flags().IntVar(&opts.index, "index", 0, "Index of the container if service has multiple replicas")

runCmd.Flags().BoolVarP(&opts.privileged, "privileged", "", false, "Give extended privileges to the process")

runCmd.Flags().StringVarP(&opts.user, "user", "u", "", "Run the command as this user")

runCmd.Flags().BoolVarP(&opts.noTty, "no-tty", "T", !dockerCli.Out().IsTerminal(), "Disable pseudo-TTY allocation. By default `docker compose exec` allocates a TTY.")

runCmd.Flags().StringVarP(&opts.workingDir, "workdir", "w", "", "Path to workdir directory for this command")

runCmd.Flags().BoolVarP(&opts.interactive, "interactive", "i", true, "Keep STDIN open even if not attached")

runCmd.Flags().MarkHidden("interactive") //nolint:errcheck

runCmd.Flags().BoolP("tty", "t", true, "Allocate a pseudo-TTY")

runCmd.Flags().MarkHidden("tty") //nolint:errcheck

runCmd.Flags().SetInterspersed(false)

runCmd.Flags().SetNormalizeFunc(func(f *pflag.FlagSet, name string) pflag.NormalizedName {

if name == "no-TTY" { // legacy

name = "no-tty"

}

return pflag.NormalizedName(name)

})

return runCmd

}

func runExec(ctx context.Context, dockerCli command.Cli, backend api.Compose, opts execOpts) error {

projectName, err := opts.toProjectName(ctx, dockerCli)

if err != nil {

return err

}

projectOptions, err := opts.composeOptions.toProjectOptions() //nolint:staticcheck

if err != nil {

return err

}

lookupFn := func(k string) (string, bool) {

v, ok := projectOptions.Environment[k]

return v, ok

}

execOpts := api.RunOptions{

Service: opts.service,

Command: opts.command,

Environment: compose.ToMobyEnv(types.NewMappingWithEquals(opts.environment).Resolve(lookupFn)),

Tty: !opts.noTty,

User: opts.user,

Privileged: opts.privileged,

Index: opts.index,

Detach: opts.detach,

WorkingDir: opts.workingDir,

Interactive: opts.interactive,

}

exitCode, err := backend.Exec(ctx, projectName, execOpts)

if exitCode != 0 {

errMsg := fmt.Sprintf("exit status %d", exitCode)

if err != nil && err.Error() != "" {

errMsg = err.Error()

}

return cli.StatusError{StatusCode: exitCode, Status: errMsg}

}

return err

}