1 files changed, 81 insertions, 0 deletions
diff --git a/src/components/resumption/src/last_state_impl.cc b/src/components/resumption/src/last_state_impl.cc
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+++ b/src/components/resumption/src/last_state_impl.cc
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+/*
+ * Copyright (c) 2017, Ford Motor Company
+ * 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 Ford Motor Company nor the names of its 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 "resumption/last_state_impl.h"
+#include "utils/file_system.h"
+#include "utils/logger.h"
+
+namespace resumption {
+
+CREATE_LOGGERPTR_GLOBAL(logger_, "Resumption")
+
+LastStateImpl::LastStateImpl(const std::string& app_storage_folder,
+                             const std::string& app_info_storage)
+    : app_storage_folder_(app_storage_folder)
+    , app_info_storage_(app_info_storage) {
+  LoadStateFromFileSystem();
+  LOG4CXX_AUTO_TRACE(logger_);
+}
+
+LastStateImpl::~LastStateImpl() {
+  LOG4CXX_AUTO_TRACE(logger_);
+  SaveStateToFileSystem();
+}
+
+void LastStateImpl::SaveStateToFileSystem() {
+  LOG4CXX_AUTO_TRACE(logger_);
+  const std::string& str = dictionary_.toStyledString();
+  const std::vector<uint8_t> char_vector_pdata(str.begin(), str.end());
+
+  DCHECK(file_system::CreateDirectoryRecursively(app_storage_folder_));
+  LOG4CXX_INFO(logger_,
+               "LastState::SaveStateToFileSystem " << app_info_storage_ << str);
+  DCHECK(file_system::Write(app_info_storage_, char_vector_pdata));
+}
+
+Json::Value& LastStateImpl::get_dictionary() {
+  return dictionary_;
+}
+
+void LastStateImpl::LoadStateFromFileSystem() {
+  std::string buffer;
+  bool result = file_system::ReadFile(app_info_storage_, buffer);
+  Json::Reader m_reader;
+  if (result && m_reader.parse(buffer, dictionary_)) {
+    LOG4CXX_INFO(logger_,
+                 "Valid last state was found." << dictionary_.toStyledString());
+    return;
+  }
+  LOG4CXX_WARN(logger_, "No valid last state was found.");
+}
+
+}  // resumption