github.com/pdmccormick/importable-docker-buildx@v0.0.0-20240426161518-e47091289030/monitor/commands/exec.go (about)

     1  package commands
     2  
     3  import (
     4  	"context"
     5  	"fmt"
     6  	"io"
     7  
     8  	controllerapi "github.com/docker/buildx/controller/pb"
     9  	"github.com/docker/buildx/monitor/types"
    10  	"github.com/pkg/errors"
    11  )
    12  
    13  type ExecCmd struct {
    14  	m types.Monitor
    15  
    16  	invokeConfig controllerapi.InvokeConfig
    17  	stdout       io.WriteCloser
    18  }
    19  
    20  func NewExecCmd(m types.Monitor, invokeConfig controllerapi.InvokeConfig, stdout io.WriteCloser) types.Command {
    21  	return &ExecCmd{m, invokeConfig, stdout}
    22  }
    23  
    24  func (cm *ExecCmd) Info() types.CommandInfo {
    25  	return types.CommandInfo{
    26  		Name:        "exec",
    27  		HelpMessage: "execute a process in the interactive container",
    28  		HelpMessageLong: `
    29  Usage:
    30    exec COMMAND [ARG...]
    31  
    32  COMMAND and ARG... will be executed in the container.
    33  `,
    34  	}
    35  }
    36  
    37  func (cm *ExecCmd) Exec(ctx context.Context, args []string) error {
    38  	if ref := cm.m.AttachedSessionID(); ref == "" {
    39  		return errors.Errorf("no attaching session")
    40  	}
    41  	if len(args) < 2 {
    42  		return errors.Errorf("command must be passed")
    43  	}
    44  	cfg := controllerapi.InvokeConfig{
    45  		Entrypoint: []string{args[1]},
    46  		Cmd:        args[2:],
    47  		NoCmd:      false,
    48  		// TODO: support other options as well via flags
    49  		Env:  cm.invokeConfig.Env,
    50  		User: cm.invokeConfig.User,
    51  		Cwd:  cm.invokeConfig.Cwd,
    52  		Tty:  true,
    53  	}
    54  	pid := cm.m.Exec(ctx, cfg)
    55  	fmt.Fprintf(cm.stdout, "Process %q started. Press Ctrl-a-c to switch to that process.\n", pid)
    56  	return nil
    57  }