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root.go
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root.go
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package cmd
import (
"fmt"
"log"
"os"
"strconv"
"github.com/byxorna/nycmesh-tool/pkg/app"
"github.com/byxorna/nycmesh-tool/pkg/version"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var cfgFile string
var (
rootCmd = &cobra.Command{
Use: "nycmesh-tool",
Short: "NYC Mesh tool provides CLI access to UISP, mesh-api, and more",
Long: `NYC Mesh tool provides an intuitive CLI that wraps the UISP API,
mesh-api (https://github.com/meshcenter/mesh-api), as well as various
business logic to operate mesh networks at scale`,
Version: app.VersionString(),
}
)
// Execute adds all child commands to the root command and sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
if err := rootCmd.Execute(); err != nil {
log.Fatalf("Error: %v", err)
}
}
func init() {
cobra.OnInitialize(initConfig)
rootCmd.PersistentFlags().StringP("format", "f", "json", "output format (table or json)")
viper.BindPFlag("core.format", rootCmd.PersistentFlags().Lookup("format"))
rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.nycmesh-tool.yaml)")
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
if cfgFile != "" {
// Use config file from the flag.
viper.SetConfigFile(cfgFile)
} else {
// Find home directory.
home, err := os.UserHomeDir()
cobra.CheckErr(err)
viper.AddConfigPath(home)
viper.AddConfigPath(".")
viper.SetConfigType("yaml")
viper.SetConfigName(".nycmesh-tool")
}
viper.AutomaticEnv() // read in environment variables that match
// If a config file is found, read it in.
if err := viper.ReadInConfig(); err == nil {
log.Printf("config file: %s", viper.ConfigFileUsed())
}
log.Printf("binary release %s, built %s", version.Release, version.BuildDate)
}
func GetIntSlice(i *[]string) ([]int, error) {
var arr = *i
ret := []int{}
for _, str := range arr {
one_int, err := strconv.Atoi(str)
if err != nil {
return nil, fmt.Errorf("%s is not a valid ID format: %w", str, err)
}
ret = append(ret, one_int)
}
return ret, nil
}