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configflags.go
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/
configflags.go
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/*
Copyright © 2019 Portworx
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package config
import (
"os"
"path"
"github.com/spf13/pflag"
homedir "github.com/mitchellh/go-homedir"
"github.com/sirupsen/logrus"
)
const (
SpecifiedContext = "cfgcontext"
File = "cfgfile"
PxDefaultDir = ".pxc"
PxDefaultConfigName = "config.yml"
flagPrefix = "pxc."
flagConfigFile = flagPrefix + "config"
flagConfigDir = flagPrefix + "config-dir"
flagContext = flagPrefix + "context"
flagSecretNamespace = flagPrefix + "secret-namespace"
flagSecretName = flagPrefix + "secret-name"
flagToken = flagPrefix + "token"
flagVerbosity = flagPrefix + "v"
)
type ConfigFlags struct {
ConfigDir string
ConfigFile string
Context string
SecretNamespace string
SecretName string
Token string
Verbosity int32
}
func newConfigFlags() *ConfigFlags {
// If the cfgFile has not been setup in the arguments, then
// read it from the HOME directory
// Check env
configDir := os.Getenv("PXCONFIGDIR")
if len(configDir) == 0 {
// Find home directory.
home, err := homedir.Dir()
if err != nil {
logrus.Fatalf("unable to determine home directory: %v\n", err)
}
configDir = path.Join(home, PxDefaultDir)
}
return &ConfigFlags{
ConfigDir: configDir,
}
}
func (c *ConfigFlags) GetConfigFile() string {
// Check env
envCF := os.Getenv("PXCONFIG")
if len(envCF) != 0 {
c.ConfigFile = envCF
return c.ConfigFile
}
if len(c.ConfigFile) == 0 {
// Find home directory.
home, err := homedir.Dir()
if err != nil {
logrus.Fatalf("unable to determine home directory: %v\n", err)
}
c.ConfigFile = path.Join(home, PxDefaultDir, PxDefaultConfigName)
}
return c.ConfigFile
}
// AddFlags adds the appropriate global flags for non-kubectl plugin mode
func (c *ConfigFlags) AddFlags(flags *pflag.FlagSet) {
flags.StringVar(&c.Context, flagContext, c.Context, "Force context name for the command")
c.addFlagsCommon(flags)
}
// AddFlagsPluginMode adds the appropriate global flags when running as a kubectl plugin
func (c *ConfigFlags) AddFlagsPluginMode(flags *pflag.FlagSet) {
flags.StringVar(&c.SecretNamespace, flagSecretNamespace, c.SecretNamespace, "Kubernetes namespace where secret contains token")
flags.StringVar(&c.SecretName, flagSecretName, c.SecretName, "Kubernetes secret name containing authentication token")
c.addFlagsCommon(flags)
}
func (c *ConfigFlags) addFlagsCommon(flags *pflag.FlagSet) {
flags.StringVar(&c.Token, flagToken, c.Token, "Portworx authentication token")
flags.StringVar(&c.ConfigFile, flagConfigFile, c.ConfigFile, "Config file (default is $HOME/"+PxDefaultDir+"/"+PxDefaultConfigName+")")
flags.StringVar(&c.ConfigDir, flagConfigDir, c.ConfigDir, "Config directory")
flags.Int32Var(&c.Verbosity, flagVerbosity, c.Verbosity, "[0-3] Log level verbosity")
}