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Copy pathroot.go
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140 lines (124 loc) · 3.25 KB
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// Package cmd wires up linko's command line interface.
package cmd
import (
"context"
"errors"
"fmt"
"os"
"os/signal"
"syscall"
"github.com/spf13/cobra"
"github.com/Devehab/linko/cloudflare"
"github.com/Devehab/linko/config"
"github.com/Devehab/linko/internal/target"
"github.com/Devehab/linko/internal/ui"
)
// Version is set from main at build time.
var Version = "dev"
var noColor bool
// NewRootCmd builds the command tree.
func NewRootCmd() *cobra.Command {
root := &cobra.Command{
Use: "linko",
Short: "Expose a local port on a public HTTPS URL via Cloudflare Tunnel",
Long: `linko turns a service running on your machine into a public HTTPS URL
using your own Cloudflare account and domain.
linko init one-time setup
linko 3000 publish localhost:3000 on a random subdomain
linko 3000 -n crm publish it on crm.<your base domain>`,
SilenceUsage: true,
SilenceErrors: true,
Version: Version,
PersistentPreRun: func(cmd *cobra.Command, args []string) {
if noColor {
ui.SetColor(false)
}
},
}
root.PersistentFlags().BoolVar(&noColor, "no-color", false, "disable coloured output")
root.SetVersionTemplate("linko {{.Version}}\n")
root.AddCommand(
newInitCmd(),
newStartCmd(),
newListCmd(),
newRemoveCmd(),
newStatusCmd(),
newDoctorCmd(),
)
return root
}
// Execute runs linko and converts errors into a clean exit.
func Execute(version string) {
Version = version
cloudflare.UserAgent = "linko/" + version
root := NewRootCmd()
root.SetArgs(NormalizeArgs(os.Args[1:], commandNames(root)))
if err := root.Execute(); err != nil {
ui.Blank()
fmt.Fprintf(os.Stderr, "%s %v\n", ui.Red("Error:"), err)
if errors.Is(err, config.ErrNotInitialized) {
fmt.Fprintf(os.Stderr, "\nRun %s to get started.\n", ui.Bold("linko init"))
}
os.Exit(1)
}
}
func commandNames(root *cobra.Command) map[string]bool {
names := map[string]bool{
"help": true,
"completion": true,
}
for _, c := range root.Commands() {
names[c.Name()] = true
for _, a := range c.Aliases {
names[a] = true
}
}
return names
}
// NormalizeArgs rewrites `linko 3000 …` into `linko start 3000 …` so a port can
// be used as the default command.
func NormalizeArgs(args []string, known map[string]bool) []string {
if len(args) == 0 {
return args
}
first := args[0]
if known[first] {
return args
}
if len(first) > 0 && first[0] == '-' {
return args
}
if target.Looks(first) {
return append([]string{"start"}, args...)
}
return args
}
// signalContext cancels when the user hits Ctrl+C.
func signalContext(parent context.Context) (context.Context, context.CancelFunc) {
ctx, cancel := context.WithCancel(parent)
ch := make(chan os.Signal, 1)
signal.Notify(ch, os.Interrupt, syscall.SIGTERM)
go func() {
select {
case <-ch:
cancel()
case <-ctx.Done():
}
signal.Stop(ch)
}()
return ctx, cancel
}
// loadClient loads the config and returns a ready Cloudflare client.
func loadClient() (*config.Config, *cloudflare.Client, error) {
cfg, err := config.Load()
if err != nil {
return nil, nil, err
}
if err := cfg.Validate(); err != nil {
return nil, nil, err
}
client := cloudflare.New(cfg.APIToken)
client.AccountID = cfg.AccountID
client.ZoneID = cfg.ZoneID
return cfg, client, nil
}