diff --git a/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientBidiReactorBase.h b/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientBidiReactorBase.h
index fb4ddf86e..a34c8ac5b 100644
--- a/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientBidiReactorBase.h
+++ b/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientBidiReactorBase.h
@@ -1,96 +1,97 @@
 #include <grpcpp/grpcpp.h>
 
 namespace comm {
 namespace network {
 namespace reactor {
 
 template <class Request, class Response>
 class ClientBidiReactorBase
     : public grpc::ClientBidiReactor<Request, Response> {
   std::shared_ptr<Response> response = nullptr;
   bool done = false;
   bool initialized = 0;
 
 protected:
   Request request;
   grpc::Status status;
 
 public:
   grpc::ClientContext context;
 
   void nextWrite();
   void terminate(const grpc::Status &status);
   bool isDone();
   void OnWriteDone(bool ok) override;
   void OnReadDone(bool ok) override;
   void OnDone(const grpc::Status &status) override;
 
   virtual std::unique_ptr<grpc::Status> prepareRequest(
       Request &request,
       std::shared_ptr<Response> previousResponse) = 0;
-  virtual void doneCallback() {
-  }
+  virtual void doneCallback(){};
+  virtual void terminateCallback(){};
 };
 
 template <class Request, class Response>
 void ClientBidiReactorBase<Request, Response>::nextWrite() {
   this->request = Request();
   std::unique_ptr<grpc::Status> status =
       this->prepareRequest(this->request, this->response);
   if (status != nullptr) {
     this->terminate(*status);
     return;
   }
   this->StartWrite(&this->request);
   if (!this->initialized) {
     this->StartCall();
     this->initialized = true;
   }
 }
 
 template <class Request, class Response>
 void ClientBidiReactorBase<Request, Response>::terminate(
     const grpc::Status &status) {
+  this->terminateCallback();
   if (this->done) {
     return;
   }
   if (!this->status.ok()) {
     std::cout << "error: " << this->status.error_message() << std::endl;
   }
   this->StartWritesDone();
   this->status = status;
   this->done = true;
 }
 
 template <class Request, class Response>
 bool ClientBidiReactorBase<Request, Response>::isDone() {
   return this->done;
 }
 
 template <class Request, class Response>
 void ClientBidiReactorBase<Request, Response>::OnWriteDone(bool ok) {
   if (this->response == nullptr) {
     this->response = std::make_shared<Response>();
   }
   this->StartRead(&(*this->response));
 }
 
 template <class Request, class Response>
 void ClientBidiReactorBase<Request, Response>::OnReadDone(bool ok) {
   if (!ok) {
     this->terminate(grpc::Status(grpc::StatusCode::UNKNOWN, "read error"));
     return;
   }
   this->nextWrite();
 }
 
 template <class Request, class Response>
 void ClientBidiReactorBase<Request, Response>::OnDone(
     const grpc::Status &status) {
   this->terminate(status);
   this->doneCallback();
 }
 
 } // namespace reactor
 } // namespace network
 } // namespace comm
diff --git a/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientReadReactorBase.h b/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientReadReactorBase.h
index 48d7205a5..1da73e9d3 100644
--- a/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientReadReactorBase.h
+++ b/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientReadReactorBase.h
@@ -1,81 +1,82 @@
 #include <grpcpp/grpcpp.h>
 
 namespace comm {
 namespace network {
 namespace reactor {
 
 template <class Request, class Response>
 class ClientReadReactorBase : public grpc::ClientReadReactor<Response> {
   Response response;
   grpc::Status status;
   bool done = false;
   bool initialized = false;
 
   void terminate(const grpc::Status &status);
 
 public:
   Request request;
   grpc::ClientContext context;
 
   void start();
   void OnReadDone(bool ok) override;
   void OnDone(const grpc::Status &status) override;
   bool isDone();
 
   virtual std::unique_ptr<grpc::Status>
   readResponse(const Response &response) = 0;
-  virtual void doneCallback() {
-  }
+  virtual void doneCallback(){};
+  virtual void terminateCallback(){};
 };
 
 template <class Request, class Response>
 void ClientReadReactorBase<Request, Response>::terminate(
     const grpc::Status &status) {
+  this->terminateCallback();
   if (this->done) {
     return;
   }
   if (!this->status.ok()) {
     std::cout << "error: " << this->status.error_message() << std::endl;
   }
   this->status = status;
   this->done = true;
 }
 
 template <class Request, class Response>
 void ClientReadReactorBase<Request, Response>::start() {
   this->StartRead(&this->response);
   if (!this->initialized) {
     this->StartCall();
     this->initialized = true;
   }
 }
 
 template <class Request, class Response>
 void ClientReadReactorBase<Request, Response>::OnReadDone(bool ok) {
   if (!ok) {
     this->terminate(grpc::Status(grpc::StatusCode::UNKNOWN, "read error"));
     return;
   }
   std::unique_ptr<grpc::Status> status = this->readResponse(this->response);
   if (status != nullptr) {
     this->terminate(*status);
     return;
   }
   this->StartRead(&this->response);
 }
 
 template <class Request, class Response>
 void ClientReadReactorBase<Request, Response>::OnDone(
     const grpc::Status &status) {
   this->terminate(status);
   this->doneCallback();
 }
 
 template <class Request, class Response>
 bool ClientReadReactorBase<Request, Response>::isDone() {
   return this->done;
 }
 
 } // namespace reactor
 } // namespace network
 } // namespace comm
diff --git a/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientWriteReactorBase.h b/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientWriteReactorBase.h
index 276044bf2..d2c0e97ae 100644
--- a/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientWriteReactorBase.h
+++ b/services/backup/docker-server/contents/server/src/Reactors/client/base-reactors/ClientWriteReactorBase.h
@@ -1,81 +1,82 @@
 #include <grpcpp/grpcpp.h>
 
 namespace comm {
 namespace network {
 namespace reactor {
 
 template <class Request, class Response>
 class ClientWriteReactorBase : public grpc::ClientWriteReactor<Request> {
   grpc::Status status;
   bool done = false;
   bool initialized = 0;
   Request request;
 
 public:
   Response response;
   grpc::ClientContext context;
 
   void nextWrite();
   void OnWriteDone(bool ok) override;
   void terminate(const grpc::Status &status);
   bool isDone();
   void OnDone(const grpc::Status &status) override;
 
   virtual std::unique_ptr<grpc::Status> prepareRequest(Request &request) = 0;
-  virtual void doneCallback() {
-  }
+  virtual void doneCallback(){};
+  virtual void terminateCallback(){};
 };
 
 template <class Request, class Response>
 void ClientWriteReactorBase<Request, Response>::nextWrite() {
   this->request = Request();
   std::unique_ptr<grpc::Status> status = this->prepareRequest(this->request);
   if (status != nullptr) {
     this->terminate(*status);
     return;
   }
   this->StartWrite(&this->request);
   if (!this->initialized) {
     this->StartCall();
     this->initialized = true;
   }
 }
 
 template <class Request, class Response>
 void ClientWriteReactorBase<Request, Response>::OnWriteDone(bool ok) {
   if (!ok) {
     this->terminate(grpc::Status(grpc::StatusCode::UNKNOWN, "write error"));
     return;
   }
   this->nextWrite();
 }
 
 template <class Request, class Response>
 void ClientWriteReactorBase<Request, Response>::terminate(
     const grpc::Status &status) {
+  this->terminateCallback();
   if (this->done) {
     return;
   }
   if (!this->status.ok()) {
     std::cout << "error: " << this->status.error_message() << std::endl;
   }
   this->status = status;
   this->done = true;
   this->StartWritesDone();
 }
 
 template <class Request, class Response>
 bool ClientWriteReactorBase<Request, Response>::isDone() {
   return this->done;
 }
 
 template <class Request, class Response>
 void ClientWriteReactorBase<Request, Response>::OnDone(
     const grpc::Status &status) {
   this->terminate(status);
   this->doneCallback();
 }
 
 } // namespace reactor
 } // namespace network
 } // namespace comm
diff --git a/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerBidiReactorBase.h b/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerBidiReactorBase.h
index c805f99e6..0af2f8ad7 100644
--- a/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerBidiReactorBase.h
+++ b/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerBidiReactorBase.h
@@ -1,110 +1,112 @@
 #pragma once
 
 #include <grpcpp/grpcpp.h>
 
 #include <iostream>
 #include <memory>
 #include <string>
 
 namespace comm {
 namespace network {
 namespace reactor {
 
 struct ServerBidiReactorStatus {
   grpc::Status status;
   bool sendLastResponse;
   ServerBidiReactorStatus(
       grpc::Status status = grpc::Status::OK,
       bool sendLastResponse = false)
       : status(status), sendLastResponse(sendLastResponse) {
   }
 };
 
 template <class Request, class Response>
 class ServerBidiReactorBase
     : public grpc::ServerBidiReactor<Request, Response> {
   Request request;
   Response response;
 
 protected:
   ServerBidiReactorStatus status;
   bool readingAborted = false;
 
 public:
   ServerBidiReactorBase();
 
   void OnDone() override;
   void OnReadDone(bool ok) override;
   void OnWriteDone(bool ok) override;
 
   void terminate(ServerBidiReactorStatus status);
 
   virtual std::unique_ptr<ServerBidiReactorStatus>
   handleRequest(Request request, Response *response) = 0;
   virtual void initialize(){};
   virtual void doneCallback(){};
+  virtual void terminateCallback(){};
 };
 
 template <class Request, class Response>
 ServerBidiReactorBase<Request, Response>::ServerBidiReactorBase() {
   this->initialize();
   this->StartRead(&this->request);
 }
 
 template <class Request, class Response>
 void ServerBidiReactorBase<Request, Response>::OnDone() {
   this->doneCallback();
   delete this;
 }
 
 template <class Request, class Response>
 void ServerBidiReactorBase<Request, Response>::terminate(
     ServerBidiReactorStatus status) {
+  this->terminateCallback();
   this->status = status;
   if (!this->status.status.ok()) {
     std::cout << "error: " << this->status.status.error_message() << std::endl;
   }
   if (this->status.sendLastResponse) {
     this->StartWriteAndFinish(
         &this->response, grpc::WriteOptions(), this->status.status);
   } else {
     this->Finish(this->status.status);
   }
 }
 
 template <class Request, class Response>
 void ServerBidiReactorBase<Request, Response>::OnReadDone(bool ok) {
   if (!ok) {
     this->readingAborted = true;
     this->terminate(ServerBidiReactorStatus(
         grpc::Status(grpc::StatusCode::ABORTED, "no more reads")));
     return;
   }
   try {
     this->response = Response();
     std::unique_ptr<ServerBidiReactorStatus> status =
         this->handleRequest(this->request, &this->response);
     if (status != nullptr) {
       this->terminate(*status);
       return;
     }
     this->StartWrite(&this->response);
   } catch (std::runtime_error &e) {
     this->terminate(ServerBidiReactorStatus(
         grpc::Status(grpc::StatusCode::INTERNAL, e.what())));
   }
 }
 
 template <class Request, class Response>
 void ServerBidiReactorBase<Request, Response>::OnWriteDone(bool ok) {
   if (!ok) {
     this->terminate(ServerBidiReactorStatus(
         grpc::Status(grpc::StatusCode::ABORTED, "write failed")));
     return;
   }
   this->StartRead(&this->request);
 }
 
 } // namespace reactor
 } // namespace network
 } // namespace comm
diff --git a/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerReadReactorBase.h b/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerReadReactorBase.h
index ea5296631..c1992ac8d 100644
--- a/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerReadReactorBase.h
+++ b/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerReadReactorBase.h
@@ -1,78 +1,80 @@
 #pragma once
 
 #include <grpcpp/grpcpp.h>
 
 #include <iostream>
 #include <memory>
 #include <string>
 
 namespace comm {
 namespace network {
 namespace reactor {
 
 template <class Request, class Response>
 class ServerReadReactorBase : public grpc::ServerReadReactor<Request> {
   Request request;
 
   void terminate(grpc::Status status);
 
 protected:
   Response *response;
   grpc::Status status;
 
 public:
   ServerReadReactorBase(Response *response);
 
   void OnDone() override;
   void OnReadDone(bool ok) override;
 
   virtual std::unique_ptr<grpc::Status> readRequest(Request request) = 0;
   virtual void initialize(){};
   virtual void doneCallback(){};
+  virtual void terminateCallback(){};
 };
 
 template <class Request, class Response>
 void ServerReadReactorBase<Request, Response>::terminate(grpc::Status status) {
+  this->terminateCallback();
   if (!this->status.ok()) {
     std::cout << "error: " << this->status.error_message() << std::endl;
   }
   this->status = status;
   this->Finish(status);
 }
 
 template <class Request, class Response>
 ServerReadReactorBase<Request, Response>::ServerReadReactorBase(
     Response *response)
     : response(response) {
   this->initialize();
   this->StartRead(&this->request);
 }
 
 template <class Request, class Response>
 void ServerReadReactorBase<Request, Response>::OnDone() {
   this->doneCallback();
   delete this;
 }
 
 template <class Request, class Response>
 void ServerReadReactorBase<Request, Response>::OnReadDone(bool ok) {
   if (!ok) {
     this->terminate(grpc::Status(grpc::StatusCode::INTERNAL, "reading error"));
     return;
   }
   try {
     std::unique_ptr<grpc::Status> status = this->readRequest(this->request);
     if (status != nullptr) {
       this->terminate(*status);
       return;
     }
   } catch (std::runtime_error &e) {
     this->terminate(grpc::Status(grpc::StatusCode::INTERNAL, e.what()));
     return;
   }
   this->StartRead(&this->request);
 }
 
 } // namespace reactor
 } // namespace network
 } // namespace comm
diff --git a/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerWriteReactorBase.h b/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerWriteReactorBase.h
index 93275868f..3b7cd472a 100644
--- a/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerWriteReactorBase.h
+++ b/services/backup/docker-server/contents/server/src/Reactors/server/base-reactors/ServerWriteReactorBase.h
@@ -1,94 +1,96 @@
 #pragma once
 
 #include <grpcpp/grpcpp.h>
 
 #include <iostream>
 #include <memory>
 #include <string>
 
 namespace comm {
 namespace network {
 namespace reactor {
 
 template <class Request, class Response>
 class ServerWriteReactorBase : public grpc::ServerWriteReactor<Response> {
   Response response;
   bool initialized = false;
 
   void terminate(grpc::Status status);
 
 protected:
   // this is a const ref since it's not meant to be modified
   const Request &request;
   grpc::Status status;
 
 public:
   ServerWriteReactorBase(const Request *request);
 
   virtual void NextWrite();
   void OnDone() override;
   void OnWriteDone(bool ok) override;
 
   virtual std::unique_ptr<grpc::Status> writeResponse(Response *response) = 0;
   virtual void initialize(){};
   virtual void doneCallback(){};
+  virtual void terminateCallback(){};
 };
 
 template <class Request, class Response>
 void ServerWriteReactorBase<Request, Response>::terminate(grpc::Status status) {
+  this->terminateCallback();
   if (!this->status.ok()) {
     std::cout << "error: " << this->status.error_message() << std::endl;
   }
   this->status = status;
   this->Finish(status);
 }
 
 template <class Request, class Response>
 ServerWriteReactorBase<Request, Response>::ServerWriteReactorBase(
     const Request *request)
     : request(*request) {
   // we cannot call this->NextWrite() here because it's going to call it on
   // the base class, not derived leading to the runtime error of calling
   // a pure virtual function
   // NextWrite has to be exposed as a public function and called explicitly
   // to initialize writing
 }
 
 template <class Request, class Response>
 void ServerWriteReactorBase<Request, Response>::NextWrite() {
   try {
     if (!this->initialized) {
       this->initialize();
       this->initialized = true;
     }
     this->response = Response();
     std::unique_ptr<grpc::Status> status = this->writeResponse(&this->response);
     if (status != nullptr) {
       this->terminate(*status);
       return;
     }
     this->StartWrite(&this->response);
   } catch (std::runtime_error &e) {
     std::cout << "error: " << e.what() << std::endl;
     this->terminate(grpc::Status(grpc::StatusCode::INTERNAL, e.what()));
   }
 }
 
 template <class Request, class Response>
 void ServerWriteReactorBase<Request, Response>::OnDone() {
   this->doneCallback();
   delete this;
 }
 
 template <class Request, class Response>
 void ServerWriteReactorBase<Request, Response>::OnWriteDone(bool ok) {
   if (!ok) {
     this->terminate(grpc::Status(grpc::StatusCode::INTERNAL, "writing error"));
     return;
   }
   this->NextWrite();
 }
 
 } // namespace reactor
 } // namespace network
 } // namespace comm
diff --git a/services/blob/src/Reactors/server/base-reactors/ServerBidiReactorBase.h b/services/blob/src/Reactors/server/base-reactors/ServerBidiReactorBase.h
index 274bc2f49..0cca2a6d9 100644
--- a/services/blob/src/Reactors/server/base-reactors/ServerBidiReactorBase.h
+++ b/services/blob/src/Reactors/server/base-reactors/ServerBidiReactorBase.h
@@ -1,110 +1,112 @@
 #pragma once
 
 #include <grpcpp/grpcpp.h>
 
 #include <iostream>
 #include <memory>
 #include <string>
 
 namespace comm {
 namespace network {
 namespace reactor {
 
 struct ServerBidiReactorStatus {
   grpc::Status status = grpc::Status::OK;
   bool sendLastResponse = false;
   ServerBidiReactorStatus(
       grpc::Status status = grpc::Status::OK,
       bool sendLastResponse = false)
       : status(status), sendLastResponse(sendLastResponse) {
   }
 };
 
 template <class Request, class Response>
 class ServerBidiReactorBase
     : public grpc::ServerBidiReactor<Request, Response> {
   Request request;
   Response response;
 
 protected:
   ServerBidiReactorStatus status;
   bool readingAborted = false;
 
 public:
   ServerBidiReactorBase();
 
   void OnDone() override;
   void OnReadDone(bool ok) override;
   void OnWriteDone(bool ok) override;
 
   void terminate(ServerBidiReactorStatus status);
 
   virtual std::unique_ptr<ServerBidiReactorStatus>
   handleRequest(Request request, Response *response) = 0;
   virtual void initialize(){};
   virtual void doneCallback(){};
+  virtual void terminateCallback(){};
 };
 
 template <class Request, class Response>
 ServerBidiReactorBase<Request, Response>::ServerBidiReactorBase() {
   this->initialize();
   this->StartRead(&this->request);
 }
 
 template <class Request, class Response>
 void ServerBidiReactorBase<Request, Response>::OnDone() {
   this->doneCallback();
   delete this;
 }
 
 template <class Request, class Response>
 void ServerBidiReactorBase<Request, Response>::terminate(
     ServerBidiReactorStatus status) {
+  this->terminateCallback();
   this->status = status;
   if (!this->status.status.ok()) {
     std::cout << "error: " << this->status.status.error_message() << std::endl;
   }
   if (this->status.sendLastResponse) {
     this->StartWriteAndFinish(
         &this->response, grpc::WriteOptions(), this->status.status);
   } else {
     this->Finish(this->status.status);
   }
 }
 
 template <class Request, class Response>
 void ServerBidiReactorBase<Request, Response>::OnReadDone(bool ok) {
   if (!ok) {
     this->readingAborted = true;
     this->terminate(ServerBidiReactorStatus(
         grpc::Status(grpc::StatusCode::ABORTED, "no more reads")));
     return;
   }
   try {
     this->response = Response();
     std::unique_ptr<ServerBidiReactorStatus> status =
         this->handleRequest(this->request, &this->response);
     if (status != nullptr) {
       this->terminate(*status);
       return;
     }
     this->StartWrite(&this->response);
   } catch (std::runtime_error &e) {
     this->terminate(ServerBidiReactorStatus(
         grpc::Status(grpc::StatusCode::INTERNAL, e.what())));
   }
 }
 
 template <class Request, class Response>
 void ServerBidiReactorBase<Request, Response>::OnWriteDone(bool ok) {
   if (!ok) {
     this->terminate(ServerBidiReactorStatus(
         grpc::Status(grpc::StatusCode::ABORTED, "write failed")));
     return;
   }
   this->StartRead(&this->request);
 }
 
 } // namespace reactor
 } // namespace network
 } // namespace comm
diff --git a/services/blob/src/Reactors/server/base-reactors/ServerReadReactorBase.h b/services/blob/src/Reactors/server/base-reactors/ServerReadReactorBase.h
index ea5296631..c1992ac8d 100644
--- a/services/blob/src/Reactors/server/base-reactors/ServerReadReactorBase.h
+++ b/services/blob/src/Reactors/server/base-reactors/ServerReadReactorBase.h
@@ -1,78 +1,80 @@
 #pragma once
 
 #include <grpcpp/grpcpp.h>
 
 #include <iostream>
 #include <memory>
 #include <string>
 
 namespace comm {
 namespace network {
 namespace reactor {
 
 template <class Request, class Response>
 class ServerReadReactorBase : public grpc::ServerReadReactor<Request> {
   Request request;
 
   void terminate(grpc::Status status);
 
 protected:
   Response *response;
   grpc::Status status;
 
 public:
   ServerReadReactorBase(Response *response);
 
   void OnDone() override;
   void OnReadDone(bool ok) override;
 
   virtual std::unique_ptr<grpc::Status> readRequest(Request request) = 0;
   virtual void initialize(){};
   virtual void doneCallback(){};
+  virtual void terminateCallback(){};
 };
 
 template <class Request, class Response>
 void ServerReadReactorBase<Request, Response>::terminate(grpc::Status status) {
+  this->terminateCallback();
   if (!this->status.ok()) {
     std::cout << "error: " << this->status.error_message() << std::endl;
   }
   this->status = status;
   this->Finish(status);
 }
 
 template <class Request, class Response>
 ServerReadReactorBase<Request, Response>::ServerReadReactorBase(
     Response *response)
     : response(response) {
   this->initialize();
   this->StartRead(&this->request);
 }
 
 template <class Request, class Response>
 void ServerReadReactorBase<Request, Response>::OnDone() {
   this->doneCallback();
   delete this;
 }
 
 template <class Request, class Response>
 void ServerReadReactorBase<Request, Response>::OnReadDone(bool ok) {
   if (!ok) {
     this->terminate(grpc::Status(grpc::StatusCode::INTERNAL, "reading error"));
     return;
   }
   try {
     std::unique_ptr<grpc::Status> status = this->readRequest(this->request);
     if (status != nullptr) {
       this->terminate(*status);
       return;
     }
   } catch (std::runtime_error &e) {
     this->terminate(grpc::Status(grpc::StatusCode::INTERNAL, e.what()));
     return;
   }
   this->StartRead(&this->request);
 }
 
 } // namespace reactor
 } // namespace network
 } // namespace comm
diff --git a/services/blob/src/Reactors/server/base-reactors/ServerWriteReactorBase.h b/services/blob/src/Reactors/server/base-reactors/ServerWriteReactorBase.h
index ee82dbcf1..3b7cd472a 100644
--- a/services/blob/src/Reactors/server/base-reactors/ServerWriteReactorBase.h
+++ b/services/blob/src/Reactors/server/base-reactors/ServerWriteReactorBase.h
@@ -1,87 +1,96 @@
 #pragma once
 
 #include <grpcpp/grpcpp.h>
 
 #include <iostream>
 #include <memory>
 #include <string>
 
 namespace comm {
 namespace network {
 namespace reactor {
 
 template <class Request, class Response>
 class ServerWriteReactorBase : public grpc::ServerWriteReactor<Response> {
   Response response;
   bool initialized = false;
 
+  void terminate(grpc::Status status);
+
 protected:
   // this is a const ref since it's not meant to be modified
   const Request &request;
   grpc::Status status;
 
 public:
   ServerWriteReactorBase(const Request *request);
 
   virtual void NextWrite();
   void OnDone() override;
   void OnWriteDone(bool ok) override;
 
   virtual std::unique_ptr<grpc::Status> writeResponse(Response *response) = 0;
   virtual void initialize(){};
   virtual void doneCallback(){};
+  virtual void terminateCallback(){};
 };
 
+template <class Request, class Response>
+void ServerWriteReactorBase<Request, Response>::terminate(grpc::Status status) {
+  this->terminateCallback();
+  if (!this->status.ok()) {
+    std::cout << "error: " << this->status.error_message() << std::endl;
+  }
+  this->status = status;
+  this->Finish(status);
+}
+
 template <class Request, class Response>
 ServerWriteReactorBase<Request, Response>::ServerWriteReactorBase(
     const Request *request)
     : request(*request) {
   // we cannot call this->NextWrite() here because it's going to call it on
   // the base class, not derived leading to the runtime error of calling
   // a pure virtual function
   // NextWrite has to be exposed as a public function and called explicitly
   // to initialize writing
 }
 
 template <class Request, class Response>
 void ServerWriteReactorBase<Request, Response>::NextWrite() {
   try {
     if (!this->initialized) {
       this->initialize();
       this->initialized = true;
     }
     this->response = Response();
     std::unique_ptr<grpc::Status> status = this->writeResponse(&this->response);
     if (status != nullptr) {
-      this->Finish(*status);
+      this->terminate(*status);
       return;
     }
     this->StartWrite(&this->response);
   } catch (std::runtime_error &e) {
     std::cout << "error: " << e.what() << std::endl;
-    this->Finish(grpc::Status(grpc::StatusCode::INTERNAL, e.what()));
+    this->terminate(grpc::Status(grpc::StatusCode::INTERNAL, e.what()));
   }
 }
 
 template <class Request, class Response>
 void ServerWriteReactorBase<Request, Response>::OnDone() {
   this->doneCallback();
   delete this;
 }
 
 template <class Request, class Response>
 void ServerWriteReactorBase<Request, Response>::OnWriteDone(bool ok) {
   if (!ok) {
-    this->Finish(grpc::Status(grpc::StatusCode::INTERNAL, "writing error"));
+    this->terminate(grpc::Status(grpc::StatusCode::INTERNAL, "writing error"));
     return;
   }
-  try {
-    this->NextWrite();
-  } catch (std::runtime_error &e) {
-    this->Finish(grpc::Status(grpc::StatusCode::INTERNAL, e.what()));
-  }
+  this->NextWrite();
 }
 
 } // namespace reactor
 } // namespace network
 } // namespace comm