eth-statediff-service/cmd/root.go

108 lines
3.0 KiB
Go

// VulcanizeDB
// Copyright © 2019 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"fmt"
"os"
"strings"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var (
cfgFile string
subCommand string
logWithCommand log.Entry
)
var rootCmd = &cobra.Command{
Use: "eth-statediff-service",
PersistentPreRun: initFuncs,
}
func Execute() {
log.Info("----- Starting vDB -----")
if err := rootCmd.Execute(); err != nil {
log.Fatal(err)
}
}
func initFuncs(cmd *cobra.Command, args []string) {
logfile := viper.GetString("logfile")
if logfile != "" {
file, err := os.OpenFile(logfile,
os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
if err == nil {
log.Infof("Directing output to %s", logfile)
log.SetOutput(file)
} else {
log.SetOutput(os.Stdout)
log.Info("Failed to log to file, using default stdout")
}
} else {
log.SetOutput(os.Stdout)
}
if err := logLevel(); err != nil {
log.Fatal("Could not set log level: ", err)
}
}
func logLevel() error {
viper.BindEnv("log.level", "LOGRUS_LEVEL")
lvl, err := log.ParseLevel(viper.GetString("log.level"))
if err != nil {
return err
}
log.SetLevel(lvl)
if lvl > log.InfoLevel {
log.SetReportCaller(true)
}
log.Info("Log level set to ", lvl.String())
return nil
}
func init() {
cobra.OnInitialize(initConfig)
viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
viper.AutomaticEnv()
rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file location")
rootCmd.PersistentFlags().String("log-file", "", "file path for logging")
rootCmd.PersistentFlags().String("log-level", log.InfoLevel.String(), "log level (trace, debug, info, warn, error, fatal, panic")
rootCmd.PersistentFlags().Int("workers", 0, "number of concurrent workers to use")
viper.BindPFlag("log.file", rootCmd.PersistentFlags().Lookup("log-file"))
viper.BindPFlag("log.level", rootCmd.PersistentFlags().Lookup("log-level"))
viper.BindPFlag("statediff.workers", rootCmd.PersistentFlags().Lookup("workers"))
}
func initConfig() {
if cfgFile != "" {
viper.SetConfigFile(cfgFile)
if err := viper.ReadInConfig(); err == nil {
log.Printf("Using config file: %s", viper.ConfigFileUsed())
} else {
log.Fatal(fmt.Sprintf("Couldn't read config file: %s", err.Error()))
}
} else {
log.Warn("No config file passed with --config flag")
}
}