Download Service : Added leveldb proto layer

components/download/internal/model_impl.cc

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/download/internal/model_impl.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "components/download/internal/entry.h"
 
 namespace download {
 
 ModelImpl::ModelImpl(Client* client, std::unique_ptr<Store> store)
     : client_(client), store_(std::move(store)), weak_ptr_factory_(this) {
   DCHECK(client_);
   DCHECK(store_);
 }
 
 ModelImpl::~ModelImpl() = default;
 
 void ModelImpl::Initialize() {
   DCHECK(!store_->IsInitialized());
-  store_->Initialize(base::Bind(&ModelImpl::OnInitializedFinished,
-                                weak_ptr_factory_.GetWeakPtr()));
-}
-
-void ModelImpl::Destroy() {
-  store_->Destroy(base::Bind(&ModelImpl::OnDestroyFinished,
-                             weak_ptr_factory_.GetWeakPtr()));
+  store_->Initialize(base::BindOnce(&ModelImpl::OnInitializedFinished,
+                                    weak_ptr_factory_.GetWeakPtr()));
 }
 
 void ModelImpl::Add(const Entry& entry) {
   DCHECK(store_->IsInitialized());
   DCHECK(entries_.find(entry.guid) == entries_.end());
 
   entries_.emplace(entry.guid, base::MakeUnique<Entry>(entry));
 
-  store_->Update(entry, base::Bind(&ModelImpl::OnAddFinished,
-                                   weak_ptr_factory_.GetWeakPtr(), entry.client,
-                                   entry.guid));
+  store_->Update(entry, base::BindOnce(&ModelImpl::OnAddFinished,
+                                       weak_ptr_factory_.GetWeakPtr(),
+                                       entry.client, entry.guid));
 }
 
 void ModelImpl::Update(const Entry& entry) {
   DCHECK(store_->IsInitialized());
   DCHECK(entries_.find(entry.guid) != entries_.end());
 
   entries_[entry.guid] = base::MakeUnique<Entry>(entry);
-  store_->Update(entry, base::Bind(&ModelImpl::OnUpdateFinished,
-                                   weak_ptr_factory_.GetWeakPtr(), entry.client,
-                                   entry.guid));
+  store_->Update(entry, base::BindOnce(&ModelImpl::OnUpdateFinished,
+                                       weak_ptr_factory_.GetWeakPtr(),
+                                       entry.client, entry.guid));
 }
 
 void ModelImpl::Remove(const std::string& guid) {
   DCHECK(store_->IsInitialized());
 
   const auto& it = entries_.find(guid);
   DCHECK(it != entries_.end());
 
   DownloadClient client = it->second->client;
   entries_.erase(it);
   store_->Remove(guid,
-                 base::Bind(&ModelImpl::OnRemoveFinished,
-                            weak_ptr_factory_.GetWeakPtr(), client, guid));
+                 base::BindOnce(&ModelImpl::OnRemoveFinished,
+                                weak_ptr_factory_.GetWeakPtr(), client, guid));
 }
 
 Entry* ModelImpl::Get(const std::string& guid) {
   const auto& it = entries_.find(guid);
   return it == entries_.end() ? nullptr : it->second.get();
 }
 
 Model::EntryList ModelImpl::PeekEntries() {
   EntryList entries;
   for (const auto& it : entries_)
     entries.push_back(it.second.get());
 
   return entries;
 }
 
 void ModelImpl::OnInitializedFinished(
     bool success,
     std::unique_ptr<std::vector<Entry>> entries) {
   if (!success) {
     client_->OnInitialized(false);
     return;
   }
 
   for (const auto& entry : *entries)
     entries_.emplace(entry.guid, base::MakeUnique<Entry>(entry));
 
   client_->OnInitialized(true);
 }
 
-void ModelImpl::OnDestroyFinished(bool success) {
-  store_.reset();
-  entries_.clear();
-  client_->OnDestroyed(success);
-}
-
 void ModelImpl::OnAddFinished(DownloadClient client,
                               const std::string& guid,
                               bool success) {
   // Don't notify the Client if the entry was already removed.
   if (entries_.find(guid) == entries_.end())
     return;
 
   // Remove the entry from the map if the add failed.
   if (!success)
     entries_.erase(guid);
@@ skipping 12 matching lines @@
 }
 
 void ModelImpl::OnRemoveFinished(DownloadClient client,
                                  const std::string& guid,
                                  bool success) {
   DCHECK(entries_.find(guid) == entries_.end());
   client_->OnItemRemoved(success, client, guid);
 }
 
 }  // namespace download