driftctl/pkg/cmd/driftctl.go

145 lines
4.2 KiB
Go

package cmd
import (
"os"
"strings"
"github.com/sirupsen/logrus"
"github.com/snyk/driftctl/build"
"github.com/snyk/driftctl/pkg"
"github.com/snyk/driftctl/sentry"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
"github.com/spf13/viper"
)
var usageTemplate = `Usage: {{.UseLine}}{{if .HasAvailableSubCommands}}
COMMANDS:{{range .Commands}}{{if .IsAvailableCommand}}
{{rpad .Name 24 }} {{.Short}}{{end}}{{end}}{{end}}{{if .HasAvailableLocalFlags}}
FLAGS:
{{ .LocalFlags.FlagUsages | trimTrailingWhitespaces }}{{end}}{{if .HasAvailableInheritedFlags}}
INHERITED FLAGS:
{{.InheritedFlags.FlagUsages | trimTrailingWhitespaces}}{{end}}{{if .HasAvailableSubCommands}}
LEARN MORE:
Use "{{.CommandPath}} <command> --help" for more information about a command{{end}}
`
var versionTemplate = `{{ printf "%s\n" .Version }}`
type DriftctlCmd struct {
cobra.Command
build build.BuildInterface
}
func NewDriftctlCmd(build build.BuildInterface) *DriftctlCmd {
cmd := &DriftctlCmd{
cobra.Command{
Use: "driftctl <command> [flags]",
Short: "Driftctl CLI",
PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
err := bindEnvToFlags(cmd)
if err != nil {
return err
}
return handleReporting(cmd)
},
Long: "Detect, track and alert on infrastructure drift.",
SilenceErrors: true,
SilenceUsage: true,
},
build,
}
cmd.SetVersionTemplate(versionTemplate)
cmd.AddCommand(NewVersionCmd())
cmd.AddCommand(NewCompletionCmd())
cmd.SetUsageTemplate(usageTemplate)
cmd.PersistentFlags().BoolP("help", "h", false, "Display help for command")
if cmd.build.IsUsageReportingEnabled() {
cmd.PersistentFlags().BoolP("no-version-check", "", false, "Disable the version check")
cmd.PersistentFlags().BoolP("disable-telemetry", "", false, "Disable telemetry")
}
cmd.PersistentFlags().BoolP("send-crash-report", "", false, "Enable error reporting. Crash data will be sent to us via Sentry.\nWARNING: may leak sensitive data (please read the documentation for more details)\nThis flag should be used only if an error occurs during execution")
cmd.AddCommand(NewScanCmd(&pkg.ScanOptions{}))
cmd.AddCommand(NewFmtCmd(&pkg.FmtOptions{}))
cmd.AddCommand(NewGenDriftIgnoreCmd())
return cmd
}
func contains(args []string, cmd string) bool {
for _, arg := range args {
if arg == cmd {
return true
}
}
return false
}
func (driftctlCmd DriftctlCmd) ShouldCheckVersion() bool {
_, noVersionCheckEnv := os.LookupEnv("DCTL_NO_VERSION_CHECK")
noVersionCheckVal := contains(os.Args[1:], "--no-version-check")
hasVersionCmd := contains(os.Args[1:], "version")
hasCompletionCmd := contains(os.Args[1:], "completion")
isHelp := contains(os.Args[1:], "help") || contains(os.Args[1:], "--help") || contains(os.Args[1:], "-h")
return driftctlCmd.build.IsRelease() && driftctlCmd.build.IsUsageReportingEnabled() && !hasVersionCmd && !hasCompletionCmd && !noVersionCheckVal && !isHelp && !noVersionCheckEnv
}
func IsReportingEnabled(cmd *cobra.Command) bool {
enableReporting, err := cmd.Flags().GetBool("send-crash-report")
if err != nil {
return false
}
return enableReporting
}
func handleReporting(cmd *cobra.Command) error {
if IsReportingEnabled(cmd) {
return sentry.Initialize()
}
return nil
}
// Iterate over command flags
// If the command flag is not manually set (f.Changed) we override its value
// from the according env value
func bindEnvToFlags(cmd *cobra.Command) error {
var err error
cmd.Flags().VisitAll(func(f *pflag.Flag) {
if err != nil {
return
}
// Ignore some global flags
// no-version-check is ignored because we don't use cmd flags to retrieve flag in version check function
// as we check version before cmd, we use os.Args
if f.Name == "help" || f.Name == "no-version-check" {
return
}
envKey := strings.ReplaceAll(f.Name, "-", "_")
// Apply the viper config value to the flag when the flag is not set and viper has a value
// Allow flags precedence over env variables
if !f.Changed && viper.IsSet(envKey) {
envVal := viper.GetString(envKey)
err = cmd.Flags().Set(f.Name, envVal)
if err != nil {
return
}
logrus.WithFields(logrus.Fields{
"env": envKey,
"flag": f.Name,
"value": envVal,
}).Debug("Bound environment variable to flag")
}
})
return err
}