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diff --git a/src/components/application_manager/rpc_plugins/app_service_rpc_plugin/src/app_service_app_extension.cc b/src/components/application_manager/rpc_plugins/app_service_rpc_plugin/src/app_service_app_extension.cc
new file mode 100644
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+++ b/src/components/application_manager/rpc_plugins/app_service_rpc_plugin/src/app_service_app_extension.cc
@@ -0,0 +1,122 @@
+/*
+ Copyright (c) 2019, Ford Motor Company, Livio
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+ Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following
+ disclaimer in the documentation and/or other materials provided with the
+ distribution.
+
+ Neither the name of the the copyright holders nor the names of their
+ contributors may be used to endorse or promote products derived from this
+ software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "app_service_rpc_plugin/app_service_app_extension.h"
+#include "app_service_rpc_plugin/app_service_rpc_plugin.h"
+
+CREATE_LOGGERPTR_GLOBAL(logger_, "AppServiceRpcPlugin")
+
+namespace app_service_rpc_plugin {
+
+const AppExtensionUID AppServiceAppExtensionUID = 455;
+
+AppServiceAppExtension::AppServiceAppExtension(
+    AppServiceRpcPlugin& plugin, application_manager::Application& app)
+    : app_mngr::AppExtension(AppServiceAppExtensionUID)
+    , plugin_(plugin)
+    , app_(app) {
+  LOG4CXX_AUTO_TRACE(logger_);
+}
+
+AppServiceAppExtension::~AppServiceAppExtension() {
+  LOG4CXX_AUTO_TRACE(logger_);
+}
+
+bool AppServiceAppExtension::SubscribeToAppService(
+    const std::string app_service_type) {
+  LOG4CXX_DEBUG(logger_, "Subscribe to app service: " << app_service_type);
+  return subscribed_data_.insert(app_service_type).second;
+}
+
+bool AppServiceAppExtension::UnsubscribeFromAppService(
+    const std::string app_service_type) {
+  LOG4CXX_DEBUG(logger_, app_service_type);
+  auto it = subscribed_data_.find(app_service_type);
+  if (it != subscribed_data_.end()) {
+    subscribed_data_.erase(it);
+    return true;
+  }
+  return false;
+}
+
+void AppServiceAppExtension::UnsubscribeFromAppService() {
+  LOG4CXX_AUTO_TRACE(logger_);
+  subscribed_data_.clear();
+}
+
+bool AppServiceAppExtension::IsSubscribedToAppService(
+    const std::string app_service_type) const {
+  LOG4CXX_DEBUG(logger_,
+                "isSubscribedToAppService for type: " << app_service_type);
+  return subscribed_data_.find(app_service_type) != subscribed_data_.end();
+}
+
+AppServiceSubscriptions AppServiceAppExtension::Subscriptions() {
+  return subscribed_data_;
+}
+
+void AppServiceAppExtension::SaveResumptionData(
+    smart_objects::SmartObject& resumption_data) {
+  const char* app_service_info = "appService";
+  resumption_data[app_service_info] =
+      smart_objects::SmartObject(smart_objects::SmartType_Array);
+  int i = 0;
+  for (const auto& subscription : subscribed_data_) {
+    resumption_data[app_service_info][i] = subscription;
+    i++;
+  }
+}
+
+void AppServiceAppExtension::ProcessResumption(
+    const smart_objects::SmartObject& resumption_data) {
+  const char* app_service_info = "appService";
+  if (resumption_data.keyExists(app_service_info)) {
+    const smart_objects::SmartObject& subscriptions_app_services =
+        resumption_data[app_service_info];
+    for (size_t i = 0; i < subscriptions_app_services.length(); ++i) {
+      std::string service_type = resumption_data[i].asString();
+      SubscribeToAppService(service_type);
+    }
+  }
+}
+
+AppServiceAppExtension& AppServiceAppExtension::ExtractASExtension(
+    application_manager::Application& app) {
+  auto ext_ptr = app.QueryInterface(AppServiceAppExtensionUID);
+  DCHECK(ext_ptr);
+  DCHECK(dynamic_cast<AppServiceAppExtension*>(ext_ptr.get()));
+  auto vi_app_extension =
+      std::static_pointer_cast<AppServiceAppExtension>(ext_ptr);
+  DCHECK(vi_app_extension);
+  return *vi_app_extension;
+}
+}  // namespace app_service_rpc_plugin