diff --git a/services/backup/src/BackupServiceImpl.h b/services/backup/src/BackupServiceImpl.h
--- a/services/backup/src/BackupServiceImpl.h
+++ b/services/backup/src/BackupServiceImpl.h
@@ -31,6 +31,10 @@
   grpc::ServerWriteReactor<backup::PullBackupResponse> *PullBackup(
       grpc::CallbackServerContext *context,
       const backup::PullBackupRequest *request) override;
+
+  grpc::ServerReadReactor<backup::AddAttachmentRequest> *AddAttachment(
+      grpc::CallbackServerContext *context,
+      google::protobuf::Empty *response) override;
 };
 
 } // namespace network
diff --git a/services/backup/src/BackupServiceImpl.cpp b/services/backup/src/BackupServiceImpl.cpp
--- a/services/backup/src/BackupServiceImpl.cpp
+++ b/services/backup/src/BackupServiceImpl.cpp
@@ -1,5 +1,6 @@
 #include "BackupServiceImpl.h"
 
+#include "AddAttachmentReactor.h"
 #include "CreateNewBackupReactor.h"
 #include "PullBackupReactor.h"
 #include "RecoverBackupKeyReactor.h"
@@ -47,5 +48,12 @@
   return reactor;
 }
 
+grpc::ServerReadReactor<backup::AddAttachmentRequest> *
+BackupServiceImpl::AddAttachment(
+    grpc::CallbackServerContext *context,
+    google::protobuf::Empty *response) {
+  return new reactor::AddAttachmentReactor(response);
+}
+
 } // namespace network
 } // namespace comm
diff --git a/services/backup/test/DatabaseManagerTest.cpp b/services/backup/test/DatabaseManagerTest.cpp
--- a/services/backup/test/DatabaseManagerTest.cpp
+++ b/services/backup/test/DatabaseManagerTest.cpp
@@ -71,11 +71,15 @@
   for (const std::string &logID : logIDs1) {
     DatabaseManager::getInstance().putLogItem(
         generateLogItem(backupID1, logID));
+    EXPECT_NE(
+        DatabaseManager::getInstance().findLogItem(backupID1, logID), nullptr);
   }
   std::vector<std::string> logIDs2 = {"log021", "log022"};
   for (const std::string &logID : logIDs2) {
     DatabaseManager::getInstance().putLogItem(
         generateLogItem(backupID2, logID));
+    EXPECT_NE(
+        DatabaseManager::getInstance().findLogItem(backupID2, logID), nullptr);
   }
 
   std::vector<std::shared_ptr<LogItem>> items1 =
@@ -90,6 +94,9 @@
   for (size_t i = 0; i < items1.size(); ++i) {
     EXPECT_EQ(logIDs1.at(i), items1.at(i)->getLogID());
     DatabaseManager::getInstance().removeLogItem(items1.at(i));
+    EXPECT_EQ(
+        DatabaseManager::getInstance().findLogItem(backupID1, logIDs1.at(i)),
+        nullptr);
   }
   EXPECT_EQ(
       DatabaseManager::getInstance().findLogItemsForBackup(backupID1).size(),
@@ -98,6 +105,9 @@
   for (size_t i = 0; i < items2.size(); ++i) {
     EXPECT_EQ(logIDs2.at(i), items2.at(i)->getLogID());
     DatabaseManager::getInstance().removeLogItem(items2.at(i));
+    EXPECT_EQ(
+        DatabaseManager::getInstance().findLogItem(backupID2, logIDs2.at(i)),
+        nullptr);
   }
   EXPECT_EQ(
       DatabaseManager::getInstance().findLogItemsForBackup(backupID2).size(),