mirror of https://github.com/docker/compose.git
70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
package mobycli
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import (
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"context"
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"fmt"
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"os"
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"os/exec"
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"strings"
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"github.com/spf13/cobra"
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apicontext "github.com/docker/api/context"
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"github.com/docker/api/context/store"
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)
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// ComDockerCli name of the classic cli binary
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const ComDockerCli = "com.docker.cli"
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// Exec delegates to com.docker.cli if on moby context
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func Exec(ctx context.Context) {
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currentContext := apicontext.CurrentContext(ctx)
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s := store.ContextStore(ctx)
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_, err := s.Get(currentContext)
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// Only run original docker command if the current context is not
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// ours.
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if err != nil {
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shellOut(ctx)
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}
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}
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func shellOut(ctx context.Context) {
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cmd := exec.CommandContext(ctx, ComDockerCli, os.Args[1:]...)
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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if err := cmd.Run(); err != nil {
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if exiterr, ok := err.(*exec.ExitError); ok {
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os.Exit(exiterr.ExitCode())
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}
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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os.Exit(0)
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}
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// ExecCmd delegates the cli command to com.docker.cli. The error is never returned (process will exit with docker classic exit code), the return type is to make it easier to use with cobra commands
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func ExecCmd(command *cobra.Command) error {
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shellOut(command.Context())
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return nil
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}
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// IsDefaultContextCommand checks if the command exists in the classic cli (issues a shellout --help)
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func IsDefaultContextCommand(dockerCommand string) bool {
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cmd := exec.Command(ComDockerCli, dockerCommand, "--help")
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b, e := cmd.CombinedOutput()
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if e != nil {
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fmt.Println(e)
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}
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output := string(b)
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contains := strings.Contains(output, "Usage:\tdocker "+dockerCommand)
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return contains
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}
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// ExecSilent executes a command and do redirect output to stdOut, return output
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func ExecSilent(ctx context.Context) ([]byte, error) {
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cmd := exec.CommandContext(ctx, ComDockerCli, os.Args[1:]...)
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return cmd.CombinedOutput()
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}
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