cloudflared-mirror/cmd/cloudflared/cliutil/errors.go

56 lines
1.2 KiB
Go

package cliutil
import (
"fmt"
"log"
"github.com/cloudflare/cloudflared/logger"
"github.com/pkg/errors"
"gopkg.in/urfave/cli.v2"
)
type usageError string
func (ue usageError) Error() string {
return string(ue)
}
func UsageError(format string, args ...interface{}) error {
if len(args) == 0 {
return usageError(format)
} else {
msg := fmt.Sprintf(format, args...)
return usageError(msg)
}
}
// Ensures exit with error code if actionFunc returns an error
func ErrorHandler(actionFunc cli.ActionFunc) cli.ActionFunc {
return func(ctx *cli.Context) error {
err := actionFunc(ctx)
if err != nil {
if _, ok := err.(usageError); ok {
msg := fmt.Sprintf("%s\nSee 'cloudflared %s --help'.", err.Error(), ctx.Command.FullName())
return cli.Exit(msg, -1)
}
// os.Exits with error code if err is cli.ExitCoder or cli.MultiError
cli.HandleExitCoder(err)
err = cli.Exit(err.Error(), 1)
}
logger.SharedWriteManager.Shutdown()
return err
}
}
// PrintLoggerSetupError returns an error to stdout to notify when a logger can't start
func PrintLoggerSetupError(msg string, err error) error {
l, le := logger.New()
if le != nil {
log.Printf("%s: %s", msg, err)
} else {
l.Errorf("%s: %s", msg, err)
}
return errors.Wrap(err, msg)
}