AppCache + Quota integration

webkit/appcache/appcache_service.cc

 // Copyright (c) 2011 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 "webkit/appcache/appcache_service.h"
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/stl_util-inl.h"
 #include "webkit/appcache/appcache_backend_impl.h"
 #include "webkit/appcache/appcache_entry.h"
+#include "webkit/appcache/appcache_quota_client.h"
 #include "webkit/appcache/appcache_storage_impl.h"
 #include "webkit/quota/quota_manager.h"
 #include "webkit/quota/special_storage_policy.h"
 
 namespace appcache {
 
 AppCacheInfoCollection::AppCacheInfoCollection() {}
 
 AppCacheInfoCollection::~AppCacheInfoCollection() {}
 
@@ skipping 114 matching lines @@
     delete this;
   }
 }
 
 void AppCacheService::DeleteHelper::OnGroupMadeObsolete(
       appcache::AppCacheGroup* group, bool success) {
   CallCallback(success ? net::OK : net::ERR_FAILED);
   delete this;
 }
 
+// DeleteOriginHelper -------
+
+class AppCacheService::DeleteOriginHelper : public AsyncHelper {
+ public:
+  DeleteOriginHelper(
+      AppCacheService* service, const GURL& origin,
+      net::CompletionCallback* callback)
+      : AsyncHelper(service, callback), origin_(origin),
+        successes_(0), failures_(0) {
+  }
+
+  virtual void Start() {
+    // We start by listing all caches, continues in OnAllInfo().
+    service_->storage()->GetAllInfo(this);
+  }
+
+ private:
+  // AppCacheStorage::Delegate methods
+  virtual void OnAllInfo(AppCacheInfoCollection* collection);
+  virtual void OnGroupLoaded(
+      appcache::AppCacheGroup* group, const GURL& manifest_url);
+  virtual void OnGroupMadeObsolete(
+      appcache::AppCacheGroup* group, bool success);
+
+  void CacheCompleted(bool success);
+
+  GURL origin_;
+  AppCacheInfoVector caches_to_delete_;
+  int successes_;
+  int failures_;
+  DISALLOW_COPY_AND_ASSIGN(DeleteOriginHelper);
+};
+
+void AppCacheService::DeleteOriginHelper::OnAllInfo(
+      AppCacheInfoCollection* collection) {
+  if (!collection) {
+    // Failed to get a listing.
+    CallCallback(net::ERR_FAILED);
+    delete this;
+    return;
+  }
+  std::map<GURL, AppCacheInfoVector>::iterator found =
+      collection->infos_by_origin.find(origin_);
+  if (found == collection->infos_by_origin.end()) {
+    // No caches for this origin.
+    CallCallback(net::OK);
+    delete this;
+    return;
+  }
+
+  // We have some caches to delete.
+  caches_to_delete_.swap(found->second);
+  successes_ = 0;
+  failures_ = 0;
+  for (AppCacheInfoVector::iterator iter = caches_to_delete_.begin();
+       iter != caches_to_delete_.end(); ++iter) {
+    service_->storage()->LoadOrCreateGroup(iter->manifest_url, this);
+  }
+}
+
+void AppCacheService::DeleteOriginHelper::OnGroupLoaded(
+      appcache::AppCacheGroup* group, const GURL& manifest_url) {
+  if (group) {
+    group->set_being_deleted(true);
+    group->CancelUpdate();
+    service_->storage()->MakeGroupObsolete(group, this);
+  } else {
+    CacheCompleted(false);
+  }
+}
+
+void AppCacheService::DeleteOriginHelper::OnGroupMadeObsolete(
+      appcache::AppCacheGroup* group, bool success) {
+  CacheCompleted(success);
+}
+
+void AppCacheService::DeleteOriginHelper::CacheCompleted(bool success) {
+  if (success)
+    ++successes_;
+  else
+    ++failures_;
+  if ((successes_ + failures_) < static_cast<int>(caches_to_delete_.size()))
+    return;
+
+  CallCallback(!failures_ ? net::OK : net::ERR_FAILED);

[kinuko, 2011/06/02 08:38:06]

for readability can we write like (failures_ == 0 ? net::OK...)?  (unless !xx
for x==0 is recommended style in chrome)

[michaeln, 2011/06/02 22:46:55]

i thought it was a style thing, but not entirely sure?

+  delete this;
+}
+
+
 // GetInfoHelper -------
 
 class AppCacheService::GetInfoHelper : AsyncHelper {
  public:
   GetInfoHelper(
       AppCacheService* service, AppCacheInfoCollection* collection,
       net::CompletionCallback* callback)
       : AsyncHelper(service, callback), collection_(collection) {
   }
 
@@ skipping 15 matching lines @@
     collection->infos_by_origin.swap(collection_->infos_by_origin);
   CallCallback(collection ? net::OK : net::ERR_FAILED);
   delete this;
 }
 
 
 // AppCacheService -------
 
 AppCacheService::AppCacheService(quota::QuotaManagerProxy* quota_manager_proxy)
     : appcache_policy_(NULL), quota_manager_proxy_(quota_manager_proxy),
+      quota_client_(NULL),
       request_context_(NULL)  {
-  // TODO(michaeln): Create and register our QuotaClient.
+  if (quota_manager_proxy_) {
+    quota_client_ = new AppCacheQuotaClient(this);
+    quota_manager_proxy_->RegisterClient(quota_client_);
+  }
 }
 
 AppCacheService::~AppCacheService() {
   DCHECK(backends_.empty());
   std::for_each(pending_helpers_.begin(),
                 pending_helpers_.end(),
                 std::mem_fun(&AsyncHelper::Cancel));
   STLDeleteElements(&pending_helpers_);
+  if (quota_client_)
+    quota_client_->NotifyAppCacheDestroyed();
 }
 
 void AppCacheService::Initialize(const FilePath& cache_directory,
                                  base::MessageLoopProxy* cache_thread) {
   DCHECK(!storage_.get());
   AppCacheStorageImpl* storage = new AppCacheStorageImpl(this);
   storage->Initialize(cache_directory, cache_thread);
   storage_.reset(storage);
 }
 
@@ skipping 11 matching lines @@
   GetInfoHelper* helper = new GetInfoHelper(this, collection, callback);
   helper->Start();
 }
 
 void AppCacheService::DeleteAppCacheGroup(const GURL& manifest_url,
                                           net::CompletionCallback* callback) {
   DeleteHelper* helper = new DeleteHelper(this, manifest_url, callback);
   helper->Start();
 }
 
+void AppCacheService::DeleteAppCachesForOrigin(
+    const GURL& origin,  net::CompletionCallback* callback) {
+  DeleteOriginHelper* helper = new DeleteOriginHelper(this, origin, callback);
+  helper->Start();
+}
+
 void AppCacheService::set_special_storage_policy(
     quota::SpecialStoragePolicy* policy) {
   special_storage_policy_ = policy;
 }
 
 void AppCacheService::RegisterBackend(
     AppCacheBackendImpl* backend_impl) {
   DCHECK(backends_.find(backend_impl->process_id()) == backends_.end());
   backends_.insert(
       BackendMap::value_type(backend_impl->process_id(), backend_impl));
 }
 
 void AppCacheService::UnregisterBackend(
     AppCacheBackendImpl* backend_impl) {
   backends_.erase(backend_impl->process_id());
 }
 
 }  // namespace appcache