/
main.go
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/
main.go
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/*
* Copyright 2021 InfAI (CC SES)
*
* 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"
"flag"
"github.com/SENERGY-Platform/process-sync/pkg/api"
"github.com/SENERGY-Platform/process-sync/pkg/configuration"
"github.com/SENERGY-Platform/process-sync/pkg/controller"
"log"
"os"
"os/signal"
"runtime/debug"
"syscall"
"time"
)
func main() {
time.Sleep(5 * time.Second) //wait for routing tables in cluster
confLocation := flag.String("config", "config.json", "configuration file")
flag.Parse()
config, err := configuration.Load(*confLocation)
if err != nil {
log.Fatal("ERROR: unable to load config ", err)
}
ctx, cancel := context.WithCancel(context.Background())
ctrl, err := controller.NewDefault(config, ctx)
if err != nil {
debug.PrintStack()
log.Fatal("FATAL:", err)
}
err = api.Start(config, ctx, ctrl)
if err != nil {
debug.PrintStack()
log.Fatal("FATAL:", err)
}
if config.CleanupInterval != "" && config.CleanupInterval != "-" && config.CleanupMaxAge != "" && config.CleanupMaxAge != "-" {
go cleanup(ctx, ctrl, config)
}
shutdown := make(chan os.Signal, 1)
signal.Notify(shutdown, syscall.SIGINT, syscall.SIGTERM, syscall.SIGKILL)
sig := <-shutdown
log.Println("received shutdown signal", sig)
cancel()
time.Sleep(1 * time.Second) //give connections time to close gracefully
}
func cleanup(ctx context.Context, ctrl *controller.Controller, config configuration.Config) {
cleanupInterval, err := time.ParseDuration(config.CleanupInterval)
if err != nil {
log.Println("WARNING: invalid CleanupInterval", config.CleanupInterval, err)
return
}
maxAge, err := time.ParseDuration(config.CleanupMaxAge)
if err != nil {
log.Println("WARNING: invalid CleanupMaxAge", config.CleanupMaxAge, err)
return
}
err = ctrl.RemoveOldEntities(maxAge)
if err != nil {
log.Println("WARNING: RemoveOldEntities() ->", err)
}
t := time.NewTicker(cleanupInterval)
for {
select {
case <-ctx.Done():
return
case <-t.C:
err = ctrl.RemoveOldEntities(maxAge)
if err != nil {
log.Println("WARNING: RemoveOldEntities() ->", err)
}
}
}
}