1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
// Copyright 2014 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 "extensions/browser/api/storage/storage_frontend.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/files/file_path.h"
#include "base/json/json_reader.h"
#include "base/lazy_instance.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "extensions/browser/api/extensions_api_client.h"
#include "extensions/browser/api/storage/leveldb_settings_storage_factory.h"
#include "extensions/browser/api/storage/local_value_store_cache.h"
#include "extensions/browser/event_router.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/common/api/storage.h"
using content::BrowserContext;
using content::BrowserThread;
namespace extensions {
namespace {
base::LazyInstance<BrowserContextKeyedAPIFactory<StorageFrontend> > g_factory =
LAZY_INSTANCE_INITIALIZER;
// Settings change Observer which forwards changes on to the extension
// processes for |context| and its incognito partner if it exists.
class DefaultObserver : public SettingsObserver {
public:
explicit DefaultObserver(BrowserContext* context)
: browser_context_(context) {}
// SettingsObserver implementation.
virtual void OnSettingsChanged(
const std::string& extension_id,
settings_namespace::Namespace settings_namespace,
const std::string& change_json) OVERRIDE {
// TODO(gdk): This is a temporary hack while the refactoring for
// string-based event payloads is removed. http://crbug.com/136045
scoped_ptr<base::ListValue> args(new base::ListValue());
args->Append(base::JSONReader::Read(change_json));
args->Append(new base::StringValue(settings_namespace::ToString(
settings_namespace)));
scoped_ptr<Event> event(new Event(
core_api::storage::OnChanged::kEventName, args.Pass()));
EventRouter::Get(browser_context_)
->DispatchEventToExtension(extension_id, event.Pass());
}
private:
BrowserContext* const browser_context_;
};
} // namespace
// static
StorageFrontend* StorageFrontend::Get(BrowserContext* context) {
return BrowserContextKeyedAPIFactory<StorageFrontend>::Get(context);
}
// static
StorageFrontend* StorageFrontend::CreateForTesting(
const scoped_refptr<SettingsStorageFactory>& storage_factory,
BrowserContext* context) {
return new StorageFrontend(storage_factory, context);
}
StorageFrontend::StorageFrontend(BrowserContext* context)
: browser_context_(context) {
Init(new LeveldbSettingsStorageFactory());
}
StorageFrontend::StorageFrontend(
const scoped_refptr<SettingsStorageFactory>& factory,
BrowserContext* context)
: browser_context_(context) {
Init(factory);
}
void StorageFrontend::Init(
const scoped_refptr<SettingsStorageFactory>& factory) {
observers_ = new SettingsObserverList();
browser_context_observer_.reset(new DefaultObserver(browser_context_));
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK(!browser_context_->IsOffTheRecord());
observers_->AddObserver(browser_context_observer_.get());
caches_[settings_namespace::LOCAL] =
new LocalValueStoreCache(factory, browser_context_->GetPath());
// Add any additional caches the embedder supports (for example, caches
// for chrome.storage.managed and chrome.storage.sync).
ExtensionsAPIClient::Get()->AddAdditionalValueStoreCaches(
browser_context_, factory, observers_, &caches_);
}
StorageFrontend::~StorageFrontend() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
observers_->RemoveObserver(browser_context_observer_.get());
for (CacheMap::iterator it = caches_.begin(); it != caches_.end(); ++it) {
ValueStoreCache* cache = it->second;
cache->ShutdownOnUI();
BrowserThread::DeleteSoon(BrowserThread::FILE, FROM_HERE, cache);
}
}
ValueStoreCache* StorageFrontend::GetValueStoreCache(
settings_namespace::Namespace settings_namespace) const {
CacheMap::const_iterator it = caches_.find(settings_namespace);
if (it != caches_.end())
return it->second;
return NULL;
}
bool StorageFrontend::IsStorageEnabled(
settings_namespace::Namespace settings_namespace) const {
return caches_.find(settings_namespace) != caches_.end();
}
void StorageFrontend::RunWithStorage(
scoped_refptr<const Extension> extension,
settings_namespace::Namespace settings_namespace,
const ValueStoreCache::StorageCallback& callback) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
CHECK(extension.get());
ValueStoreCache* cache = caches_[settings_namespace];
CHECK(cache);
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
base::Bind(&ValueStoreCache::RunWithValueStoreForExtension,
base::Unretained(cache), callback, extension));
}
void StorageFrontend::DeleteStorageSoon(const std::string& extension_id) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
for (CacheMap::iterator it = caches_.begin(); it != caches_.end(); ++it) {
ValueStoreCache* cache = it->second;
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
base::Bind(&ValueStoreCache::DeleteStorageSoon,
base::Unretained(cache),
extension_id));
}
}
scoped_refptr<SettingsObserverList> StorageFrontend::GetObservers() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
return observers_;
}
void StorageFrontend::DisableStorageForTesting(
settings_namespace::Namespace settings_namespace) {
CacheMap::iterator it = caches_.find(settings_namespace);
if (it != caches_.end()) {
ValueStoreCache* cache = it->second;
cache->ShutdownOnUI();
BrowserThread::DeleteSoon(BrowserThread::FILE, FROM_HERE, cache);
caches_.erase(it);
}
}
// BrowserContextKeyedAPI implementation.
// static
BrowserContextKeyedAPIFactory<StorageFrontend>*
StorageFrontend::GetFactoryInstance() {
return g_factory.Pointer();
}
// static
const char* StorageFrontend::service_name() { return "StorageFrontend"; }
} // namespace extensions
|
