Added Registry TTL to memory registry. Tracking node lifetimes.

registry/handler/handler.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"context"
+	"time"
 
 	"github.com/micro/go-micro/errors"
 	"github.com/micro/go-micro/registry"
@@ -26,10 +27,17 @@ func (r *Registry) GetService(ctx context.Context, req *pb.GetRequest, rsp *pb.G
 }
 
 func (r *Registry) Register(ctx context.Context, req *pb.Service, rsp *pb.EmptyResponse) error {
-	err := r.Registry.Register(service.ToService(req))
+	var regOpts []registry.RegisterOption
+	regTTL, ok := ctx.Value("register_ttl").(time.Duration)
+	if ok {
+		regOpts = append(regOpts, registry.RegisterTTL(regTTL))
+	}
+
+	err := r.Registry.Register(service.ToService(req), regOpts...)
 	if err != nil {
 		return errors.InternalServerError("go.micro.registry", err.Error())
 	}
+
 	return nil
 }