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main.go
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main.go
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//
// Copyright 2019 Insolar Technologies GmbH
//
// 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 main
import (
"context"
"fmt"
"os"
"os/signal"
"syscall"
"github.com/fsnotify/fsnotify"
"github.com/spf13/cobra"
jww "github.com/spf13/jwalterweatherman"
"github.com/spf13/viper"
"github.com/insolar/insolar/instrumentation/inslogger"
"github.com/insolar/insolar/log"
)
var configPath string
func main() {
var rootCmd = &cobra.Command{
Use: "keeperd --config=<path to config>",
Run: rootCommand,
}
rootCmd.Flags().StringVarP(&configPath, "config", "c", "", "path to config file")
err := rootCmd.Execute()
if err != nil {
fmt.Println("Wrong input params:", err.Error())
}
}
func rootCommand(cmd *cobra.Command, args []string) {
jww.SetStdoutThreshold(jww.LevelInfo)
var err error
vp := viper.New()
cfg := NewConfig()
if len(configPath) != 0 {
vp.SetConfigFile(configPath)
err = vp.ReadInConfig()
if err != nil {
log.Fatal("failed to load configuration from file: ", err.Error())
}
err = vp.Unmarshal(&cfg)
if err != nil {
log.Fatal("failed to load configuration from file: ", err.Error())
}
}
ctx := context.Background()
ctx, logger := inslogger.InitNodeLogger(ctx, cfg.Log, "main", "", "keeperd")
keeper := NewKeeper(cfg.Keeper)
keeper.Run(ctx)
vp.WatchConfig()
vp.OnConfigChange(func(e fsnotify.Event) {
logger.Info("Reloading config file")
cfg := NewConfig()
err := vp.Unmarshal(&cfg)
if err != nil {
logger.Errorf("Failed to reload config: %s", err.Error())
return
}
keeper.SetConfig(cfg.Keeper)
})
var gracefulStop = make(chan os.Signal, 1)
signal.Notify(gracefulStop, syscall.SIGTERM)
signal.Notify(gracefulStop, syscall.SIGINT)
<-gracefulStop
}