add scheduler

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

cmd/servicechecker/main.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"os"
+	"os/signal"
 	"time"
 
 	grpccli "go.unistack.org/micro-client-grpc/v3"
@@ -15,6 +16,7 @@ import (
 	"go.unistack.org/micro/v3/semconv"
 	"go.unistack.org/servicechecker/pkg/config"
 	"go.unistack.org/servicechecker/pkg/grpcconn"
+	"go.unistack.org/servicechecker/pkg/scheduler"
 	"google.golang.org/protobuf/reflect/protodesc"
 	"google.golang.org/protobuf/reflect/protoreflect"
 	"google.golang.org/protobuf/types/descriptorpb"
@@ -22,7 +24,9 @@ import (
 )
 
 func main() {
-	ctx := context.Background()
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, os.Kill)
+	defer stop()
+
 	l := slog.NewLogger()
 	l.Init()
 	m := victoriametrics.NewMeter()
@@ -36,6 +40,15 @@ func main() {
 		l.Fatal(ctx, "failed to open config", err)
 	}
 
+	s, err := scheduler.NewScheduler()
+	if err != nil {
+		l.Fatal(ctx, "failed to create scheduler", err)
+	}
+
+	if err = s.Start(); err != nil {
+		l.Fatal(ctx, "failed to start scheduler", err)
+	}
+
 	clients := make(map[string]client.Client)
 	gcli := grpccli.NewClient(
 		client.Codec("application/json", jsonpbcodec.NewCodec()),
@@ -110,5 +123,6 @@ func main() {
 			}
 		}
 	}
-	m.Write(os.Stdout)
+
+	<-ctx.Done()
 }