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root.go
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root.go
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// Copyright © 2016 Ryan Eschinger <ryanesc@gmail.com>
//
// 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 cmd
import (
"os"
"github.com/Sirupsen/logrus"
"github.com/ryane/takethe53/server"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var cfgFile string
var RootCmd = &cobra.Command{
Use: "takethe53",
Short: "Creates Route53 records.",
Long: `Creates Route53 records.`,
Run: func(cmd *cobra.Command, args []string) {
server.Run(viper.GetString("address"))
},
}
func Execute() {
if err := RootCmd.Execute(); err != nil {
logrus.Error(err)
os.Exit(-1)
}
}
func init() {
cobra.OnInitialize(initConfig)
RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.takethe53.yaml)")
RootCmd.PersistentFlags().BoolP("verbose", "v", false, "enable verbose logging")
viper.BindPFlag("verbose", RootCmd.PersistentFlags().Lookup("verbose"))
RootCmd.PersistentFlags().StringP("log-format", "f", "text", "log format. text|json")
viper.BindPFlag("log-format", RootCmd.PersistentFlags().Lookup("log-format"))
RootCmd.Flags().String("address", ":9053", "the address to listen on")
viper.BindPFlag("address", RootCmd.Flags().Lookup("address"))
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
if cfgFile != "" { // enable ability to specify config file via flag
viper.SetConfigFile(cfgFile)
}
viper.SetConfigName(".takethe53") // name of config file (without extension)
viper.AddConfigPath("$HOME") // adding home directory as first search path
viper.SetEnvPrefix("takethe53")
viper.AutomaticEnv() // read in environment variables that match
// If a config file is found, read it in.
readConfig := false
if err := viper.ReadInConfig(); err == nil {
readConfig = len(viper.ConfigFileUsed()) > 0
}
if viper.GetString("log-format") == "json" {
logrus.SetFormatter(&logrus.JSONFormatter{})
}
if viper.GetBool("verbose") {
logrus.SetLevel(logrus.DebugLevel)
logrus.Debug("debug on")
}
if readConfig {
logrus.Debug("Using config file:", viper.ConfigFileUsed())
}
}
func logger(fields logrus.Fields) *logrus.Entry {
return logrus.WithFields(fields)
}