You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main.go
    path of file: ./repos/juju/cmd/jujud-controller
    
    the code of the file until where you have to start completion: // Copyright 2012-2014 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.

package main

import (
	"crypto/tls"
	"crypto/x509"
	"fmt"
	"io"
	"math/rand"
	"os"
	"path/filepath"
	"runtime"
	"strings"
	"time"

	"github.com/juju/clock"
	"github.com/juju/cmd/v3"
	"github.com/juju/errors"
	"github.com/juju/featureflag"
	"github.com/juju/loggo"
	"github.com/juju/names/v5"
	proxyutils "github.com/juju/proxy"
	"github.com/juju/utils/v3/exec"
	"github.com/juju/version/v2"

	"github.com/juju/juju/agent/addons"
	k8sexec "github.com/juju/juju/caas/kubernetes/provider/exec"
	jujucmd "github.com/juju/juju/cmd"
	agentcmd "github.com/juju/juju/cmd/jujud-controller/agent"
	jujudagentcmd "github.com/juju/juju/cmd/jujud/agent"
	"github.com/juju/juju/cmd/jujud/agent/agentconf"
	"github.com/juju/juju/cmd/jujud/agent/caasoperator"
	"github.com/juju/juju/cmd/jujud/agent/config"
	"github.com/juju/juju/cmd/jujud/dumplogs"
	"github.com/juju/juju/cmd/jujud/introspect"
	"github.com/juju/juju/cmd/jujud/run"
	"github.com/juju/juju/core/arch"
	"github.com/juju/juju/core/machinelock"
	coreos "github.com/juju/juju/core/os"
	jujunames "github.com/juju/juju/juju/names"
	"github.com/juju/juju/juju/osenv"
	"github.com/juju/juju/juju/sockets"
	_ "github.com/juju/juju/provider/all"         // Import the providers.
	_ "github.com/juju/juju/secrets/provider/all" // Import the secret providers.
	"github.com/juju/juju/upgrades"
	"github.com/juju/juju/utils/proxy"
	jujuversion "github.
    
func jujuDMain(args []string, ctx *cmd.Context) (code int, err error) {
	// Assuming an average of 200 bytes per log message, use up to
	// 200MB for the log buffer.
	defer logger.Debugf("jujud complete, code %d, err %v", code, err)
	bufferedLogger, err := logsender.InstallBufferedLogWriter(loggo.DefaultContext(), 1048576)
	if err != nil {
		return 1, errors.Trace(err)
	}

	// Set the default transport to use the in-process proxy
	// configuration.
	if err := proxy.DefaultConfig.Set(proxyutils.DetectProxies()); err != nil {
		return 1, errors.Trace(err)
	}
	if err := proxy.DefaultConfig.InstallInDefaultTransport(); err != nil {
		return 1, errors.Trace(err)
	}

	current := version.Binary{
		Number:  jujuversion.Current,
		Arch:    arch.HostArch(),
		Release: coreos.HostOSTypeName(),
	}
	detail := versionDetail{
		Version:      current.String(),
		GitCommit:    jujuversion.GitCommit,
		GitTreeState: jujuversion.GitTreeState,
		Compiler:     jujuversion.Compiler,
		GoBuildTags:  jujuversion.GoBuildTags,
	}

	jujud := jujucmd.NewSuperCommand(cmd.SuperCommandParams{
		Name: "jujud",
		Doc:  jujudDoc,
		Log:  jujucmd.DefaultLog,
		// p.Version should be a version.Binary, but juju/cmd does not
		// import juju/juju/version so this cannot happen. We have
		// tests to assert that this string value is correct.
		Version:       detail.Version,
		VersionDetail: detail,
	})

	jujud.Log.NewWriter = func(target io.Writer) loggo.Writer {
		return &jujudWriter{target: target}
	}

	jujud.Register(agentcmd.NewBootstrapCommand())
	jujud.Register(jujudagentcmd.NewCAASUnitInitCommand())
	jujud.Register(jujudagentcmd.NewModelCommand(bufferedLogger))

	// TODO(katco-): AgentConf type is doing too much. The
	// MachineAgent type has called out the separate concerns; the
	// AgentConf should be split up to follow suit.
	agentConf := agentconf.NewAgentConf("")
	machineAgentFactory := agentcmd.MachineAgentFactoryFn(
		agentConf,
		bufferedLogger,
		addons.DefaultIntrospectionSocketName,
		upgrades.PreUpgradeSteps,
		"",
	)
	jujud.Register(agentcmd.NewMachineAgentCmd(ctx, machineAgentFactory, agentConf, agentConf))

	caasOperatorAgent, err := jujudagentcmd.NewCaasOperatorAgent(ctx, bufferedLogger, func(mc *caasoperator.ManifoldsConfig) error {
		mc.NewExecClient = k8sexec.NewInCluster
		return nil
	})
	if err != nil {
		return -1, errors.Trace(err)
	}
	jujud.Register(caasOperatorAgent)

	jujud.Register(jujudagentcmd.NewCheckConnectionCommand(agentConf, jujudagentcmd.ConnectAsAgent))

	code = cmd.Main(jujud, ctx, args[1:])
	return code, nil
}