constellation/cli/cmd/root.go
Daniel Weiße 1f9b6ba90f
Add debug logging for verify command (#610)
Signed-off-by: Daniel Weiße <dw@edgeless.systems>
2022-11-21 17:02:33 +01:00

95 lines
2.4 KiB
Go

/*
Copyright (c) Edgeless Systems GmbH
SPDX-License-Identifier: AGPL-3.0-only
*/
package cmd
import (
"context"
"fmt"
"os"
"os/signal"
"github.com/edgelesssys/constellation/v2/cli/internal/cmd"
"github.com/edgelesssys/constellation/v2/internal/constants"
"github.com/spf13/cobra"
)
// Execute starts the CLI.
func Execute() error {
cobra.EnableCommandSorting = false
rootCmd := NewRootCmd()
ctx, cancel := signalContext(context.Background(), os.Interrupt)
defer cancel()
return rootCmd.ExecuteContext(ctx)
}
// NewRootCmd creates the root command.
func NewRootCmd() *cobra.Command {
rootCmd := &cobra.Command{
Use: "constellation",
Short: "Manage your Constellation cluster",
Long: "Manage your Constellation cluster.",
PersistentPreRun: preRunRoot,
}
// Set output of cmd.Print to stdout. (By default, it's stderr.)
rootCmd.SetOut(os.Stdout)
rootCmd.PersistentFlags().String("config", constants.ConfigFilename, "path to the configuration file")
must(rootCmd.MarkPersistentFlagFilename("config", "yaml"))
rootCmd.PersistentFlags().Bool("debug", false, "enable debug logging")
rootCmd.AddCommand(cmd.NewConfigCmd())
rootCmd.AddCommand(cmd.NewCreateCmd())
rootCmd.AddCommand(cmd.NewInitCmd())
rootCmd.AddCommand(cmd.NewMiniCmd())
rootCmd.AddCommand(cmd.NewVerifyCmd())
rootCmd.AddCommand(cmd.NewUpgradeCmd())
rootCmd.AddCommand(cmd.NewRecoverCmd())
rootCmd.AddCommand(cmd.NewTerminateCmd())
rootCmd.AddCommand(cmd.NewVersionCmd())
return rootCmd
}
// signalContext returns a context that is canceled on the handed signal.
// The signal isn't watched after its first occurrence. Call the cancel
// function to ensure the internal goroutine is stopped and the signal isn't
// watched any longer.
func signalContext(ctx context.Context, sig os.Signal) (context.Context, context.CancelFunc) {
sigCtx, stop := signal.NotifyContext(ctx, sig)
done := make(chan struct{}, 1)
stopDone := make(chan struct{}, 1)
go func() {
defer func() { stopDone <- struct{}{} }()
defer stop()
select {
case <-sigCtx.Done():
fmt.Println(" Signal caught. Press ctrl+c again to terminate the program immediately.")
case <-done:
}
}()
cancelFunc := func() {
done <- struct{}{}
<-stopDone
}
return sigCtx, cancelFunc
}
func preRunRoot(cmd *cobra.Command, args []string) {
cmd.SilenceUsage = true
}
func must(err error) {
if err != nil {
panic(err)
}
}