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common.go
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common.go
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package common
import (
"encoding/json"
"fmt"
"os"
"strings"
"github.com/cnrancher/autok3s/pkg/common"
"github.com/cnrancher/autok3s/pkg/providers"
"github.com/cnrancher/autok3s/pkg/utils"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
// BindEnvFlags used for bind env to flag.
func BindEnvFlags(cmd *cobra.Command) {
cmd.Flags().VisitAll(func(f *pflag.Flag) {
envAnnotation := f.Annotations[utils.BashCompEnvVarFlag]
if len(envAnnotation) == 0 {
return
}
v, _ := cmd.Flags().GetString(f.Name)
if v == "" && os.Getenv(envAnnotation[0]) != "" {
cmd.Flags().Set(f.Name, fmt.Sprintf("%v", os.Getenv(envAnnotation[0])))
}
})
}
// FlagHackLookup hack lookup function.
// Borrowed from https://github.com/docker/machine/blob/master/commands/create.go#L267.
func FlagHackLookup(flagName string) string {
// i.e. "-d" for "--driver"
flagPrefix := flagName[1:3]
// TODO: Should we support -flag-name (single hyphen) syntax as well?
for i, arg := range os.Args {
if strings.Contains(arg, flagPrefix) {
// format '--driver foo' or '-d foo'
if arg == flagPrefix || arg == flagName {
if i+1 < len(os.Args) {
return os.Args[i+1]
}
}
// format '--driver=foo' or '-d=foo'
if strings.HasPrefix(arg, flagPrefix+"=") || strings.HasPrefix(arg, flagName+"=") {
return strings.Split(arg, "=")[1]
}
}
}
return ""
}
// MakeSureCredentialFlag ensure credential is provided.
func MakeSureCredentialFlag(flags *pflag.FlagSet, p providers.Provider) error {
flags.VisitAll(func(flag *pflag.Flag) {
if isCredentialFlag(flag.Name, p) {
v, err := flags.GetString(flag.Name)
if err != nil || v == "" {
credentials, err := common.DefaultDB.GetCredentialByProvider(p.GetProviderName())
if err != nil {
logrus.Errorf("failed to get credential by provider %s: %v", p.GetProviderName(), err)
return
}
if len(credentials) > 0 {
cred := credentials[0]
secrets := map[string]string{}
err = json.Unmarshal(cred.Secrets, &secrets)
if err != nil {
logrus.Errorf("failed to convert credential value: %v", err)
return
}
flags.Set(flag.Name, secrets[flag.Name])
}
}
}
})
return nil
}
func isCredentialFlag(s string, p providers.Provider) bool {
found := false
credFlags := p.GetCredentialFlags()
for _, flag := range credFlags {
if strings.EqualFold(s, flag.Name) {
found = true
}
}
return found
}