update root command
This commit is contained in:
Ian Norden
parent
94914adafc
commit
ba06b334d4
113
cmd/root.go
113
cmd/root.go
@ -1,90 +1,105 @@
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// Copyright © 2020 Vulcanize, Inc
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//
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// VulcanizeDB
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// Copyright © 2019 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"fmt"
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"os"
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"strings"
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homedir "github.com/mitchellh/go-homedir"
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log "github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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)
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var cfgFile string
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var (
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cfgFile string
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subCommand string
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logWithCommand log.Entry
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)
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// rootCmd represents the base command when called without any subcommands
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var rootCmd = &cobra.Command{
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Use: "eth-statediff-service",
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Short: "A brief description of your application",
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Long: `A longer description that spans multiple lines and likely contains
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examples and usage of using your application. For example:
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Cobra is a CLI library for Go that empowers applications.
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This application is a tool to generate the needed files
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to quickly create a Cobra application.`,
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// Uncomment the following line if your bare application
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// has an action associated with it:
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// Run: func(cmd *cobra.Command, args []string) { },
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Use: "eth-statediff-service",
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PersistentPreRun: initFuncs,
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}
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// Execute adds all child commands to the root command and sets flags appropriately.
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// This is called by main.main(). It only needs to happen once to the rootCmd.
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func Execute() {
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log.Info("----- Starting vDB -----")
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if err := rootCmd.Execute(); err != nil {
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fmt.Println(err)
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os.Exit(1)
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log.Fatal(err)
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}
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}
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func initFuncs(cmd *cobra.Command, args []string) {
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logfile := viper.GetString("logfile")
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if logfile != "" {
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file, err := os.OpenFile(logfile,
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os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
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if err == nil {
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log.Infof("Directing output to %s", logfile)
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log.SetOutput(file)
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} else {
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log.SetOutput(os.Stdout)
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log.Info("Failed to log to file, using default stdout")
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}
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} else {
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log.SetOutput(os.Stdout)
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}
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if err := logLevel(); err != nil {
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log.Fatal("Could not set log level: ", err)
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}
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}
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func logLevel() error {
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viper.BindEnv("log.level", "LOGRUS_LEVEL")
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lvl, err := log.ParseLevel(viper.GetString("log.level"))
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if err != nil {
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return err
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}
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log.SetLevel(lvl)
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if lvl > log.InfoLevel {
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log.SetReportCaller(true)
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}
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log.Info("Log level set to ", lvl.String())
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return nil
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}
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func init() {
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cobra.OnInitialize(initConfig)
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viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
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viper.AutomaticEnv()
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// Here you will define your flags and configuration settings.
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// Cobra supports persistent flags, which, if defined here,
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// will be global for your application.
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rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.eth-statediff-service.yaml)")
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rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file location")
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rootCmd.PersistentFlags().String("log-file", "", "file path for logging")
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rootCmd.PersistentFlags().String("log-level", log.InfoLevel.String(), "Log level (trace, debug, info, warn, error, fatal, panic")
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// Cobra also supports local flags, which will only run
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// when this action is called directly.
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rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
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viper.BindPFlag("log.file", rootCmd.PersistentFlags().Lookup("log-file"))
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viper.BindPFlag("log.level", rootCmd.PersistentFlags().Lookup("log-level"))
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}
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// initConfig reads in config file and ENV variables if set.
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func initConfig() {
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if cfgFile != "" {
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// Use config file from the flag.
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viper.SetConfigFile(cfgFile)
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} else {
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// Find home directory.
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home, err := homedir.Dir()
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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if err := viper.ReadInConfig(); err == nil {
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log.Printf("Using config file: %s", viper.ConfigFileUsed())
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} else {
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log.Fatal(fmt.Sprintf("Couldn't read config file: %s", err.Error()))
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}
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// Search config in home directory with name ".eth-statediff-service" (without extension).
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viper.AddConfigPath(home)
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viper.SetConfigName(".eth-statediff-service")
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}
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viper.AutomaticEnv() // read in environment variables that match
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// If a config file is found, read it in.
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if err := viper.ReadInConfig(); err == nil {
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fmt.Println("Using config file:", viper.ConfigFileUsed())
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} else {
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log.Warn("No config file passed with --config flag")
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}
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}
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