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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
|
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/ash/components/dbus/spaced/spaced_client.h"
#include <map>
#include <vector>
#include "base/logging.h"
#include "base/memory/raw_ptr.h"
#include "chromeos/ash/components/dbus/spaced/fake_spaced_client.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_proxy.h"
#include "third_party/cros_system_api/dbus/spaced/dbus-constants.h"
namespace ash {
namespace {
using spaced::kSpacedInterface;
SpacedClient* g_instance = nullptr;
// Implementation of SpacedClient talking to the Spaced interface on the Chrome
// OS side.
class SpacedClientImpl : public SpacedClient {
public:
SpacedClientImpl() = default;
~SpacedClientImpl() override = default;
// Not copyable or movable.
SpacedClientImpl(const SpacedClientImpl&) = delete;
SpacedClientImpl& operator=(const SpacedClientImpl&) = delete;
void GetFreeDiskSpace(const std::string& path,
GetSizeCallback callback) override {
dbus::MethodCall method_call(kSpacedInterface,
spaced::kGetFreeDiskSpaceMethod);
dbus::MessageWriter writer(&method_call);
writer.AppendString(path);
proxy_->CallMethod(
&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&SpacedClientImpl::HandleGetSizeResponse,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void GetTotalDiskSpace(const std::string& path,
GetSizeCallback callback) override {
dbus::MethodCall method_call(kSpacedInterface,
spaced::kGetTotalDiskSpaceMethod);
dbus::MessageWriter writer(&method_call);
writer.AppendString(path);
proxy_->CallMethod(
&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&SpacedClientImpl::HandleGetSizeResponse,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void GetRootDeviceSize(GetSizeCallback callback) override {
dbus::MethodCall method_call(kSpacedInterface,
spaced::kGetRootDeviceSizeMethod);
dbus::MessageWriter writer(&method_call);
proxy_->CallMethod(
&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&SpacedClientImpl::HandleGetSizeResponse,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void IsQuotaSupported(const std::string& path,
BoolCallback callback) override {
dbus::MethodCall method_call(kSpacedInterface,
spaced::kIsQuotaSupportedMethod);
dbus::MessageWriter writer(&method_call);
writer.AppendString(path);
proxy_->CallMethod(
&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&SpacedClientImpl::HandleBoolResponse,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void GetQuotaCurrentSpaceForUid(const std::string& path,
uint32_t uid,
GetSizeCallback callback) override {
dbus::MethodCall method_call(kSpacedInterface,
spaced::kGetQuotaCurrentSpaceForUidMethod);
dbus::MessageWriter writer(&method_call);
writer.AppendString(path);
writer.AppendUint32(uid);
proxy_->CallMethod(
&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&SpacedClientImpl::HandleGetSizeResponse,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void GetQuotaCurrentSpaceForGid(const std::string& path,
uint32_t gid,
GetSizeCallback callback) override {
dbus::MethodCall method_call(kSpacedInterface,
spaced::kGetQuotaCurrentSpaceForGidMethod);
dbus::MessageWriter writer(&method_call);
writer.AppendString(path);
writer.AppendUint32(gid);
proxy_->CallMethod(
&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&SpacedClientImpl::HandleGetSizeResponse,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void GetQuotaCurrentSpaceForProjectId(const std::string& path,
uint32_t project_id,
GetSizeCallback callback) override {
dbus::MethodCall method_call(
kSpacedInterface, spaced::kGetQuotaCurrentSpaceForProjectIdMethod);
dbus::MessageWriter writer(&method_call);
writer.AppendString(path);
writer.AppendUint32(project_id);
proxy_->CallMethod(
&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(&SpacedClientImpl::HandleGetSizeResponse,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void GetQuotaCurrentSpacesForIds(const std::string& path,
const std::vector<uint32_t>& uids,
const std::vector<uint32_t>& gids,
const std::vector<uint32_t>& project_ids,
GetSpacesForIdsCallback callback) override {
dbus::MethodCall method_call(kSpacedInterface,
spaced::kGetQuotaCurrentSpacesForIdsMethod);
spaced::GetQuotaCurrentSpacesForIdsRequest request;
request.set_path(path);
request.mutable_uids()->Add(uids.begin(), uids.end());
request.mutable_gids()->Add(gids.begin(), gids.end());
request.mutable_project_ids()->Add(project_ids.begin(), project_ids.end());
dbus::MessageWriter writer(&method_call);
writer.AppendProtoAsArrayOfBytes(request);
proxy_->CallMethod(
&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::BindOnce(
[](GetSpacesForIdsCallback callback, dbus::Response* response) {
if (!response) {
LOG(ERROR) << "Spaced D-Bus method "
<< spaced::kGetQuotaCurrentSpacesForIdsMethod
<< " returned a null response";
std::move(callback).Run(std::nullopt);
return;
}
dbus::MessageReader reader(response);
spaced::GetQuotaCurrentSpacesForIdsReply reply;
if (!reader.PopArrayOfBytesAsProto(&reply)) {
LOG(ERROR) << "Spaced D-Bus method "
<< spaced::kGetQuotaCurrentSpacesForIdsMethod
<< " returned an invalid response: "
<< response->ToString();
std::move(callback).Run(std::nullopt);
return;
}
std::move(callback).Run(
SpaceMaps(std::map<uint32_t, int64_t>(
reply.curspaces_for_uids().begin(),
reply.curspaces_for_uids().end()),
std::map<uint32_t, int64_t>(
reply.curspaces_for_gids().begin(),
reply.curspaces_for_gids().end()),
std::map<uint32_t, int64_t>(
reply.curspaces_for_project_ids().begin(),
reply.curspaces_for_project_ids().end())));
},
std::move(callback)));
}
void Init(dbus::Bus* bus) {
proxy_ = bus->GetObjectProxy(spaced::kSpacedServiceName,
dbus::ObjectPath(spaced::kSpacedServicePath));
DCHECK(proxy_);
proxy_->ConnectToSignal(
kSpacedInterface, spaced::kStatefulDiskSpaceUpdate,
base::BindRepeating(&SpacedClientImpl::OnSpaceUpdate,
weak_ptr_factory_.GetWeakPtr()),
base::BindOnce(&SpacedClientImpl::OnSignalConnected,
weak_ptr_factory_.GetWeakPtr()));
}
private:
void HandleBoolResponse(BoolCallback callback, dbus::Response* response) {
if (!response) {
std::move(callback).Run(std::nullopt);
return;
}
dbus::MessageReader reader(response);
bool result = 0;
if (!reader.PopBool(&result)) {
LOG(ERROR) << "Spaced D-Bus method " << response->GetMember()
<< ": Invalid response. " + response->ToString();
std::move(callback).Run(std::nullopt);
return;
}
std::move(callback).Run(result);
}
// Handles the result of methods that get size and calls |callback|.
void HandleGetSizeResponse(GetSizeCallback callback,
dbus::Response* response) {
if (!response) {
std::move(callback).Run(std::nullopt);
return;
}
dbus::MessageReader reader(response);
int64_t size = 0;
if (!reader.PopInt64(&size)) {
LOG(ERROR) << "Spaced D-Bus method " << response->GetMember()
<< ": Invalid response. " + response->ToString();
std::move(callback).Run(std::nullopt);
return;
}
std::move(callback).Run(size);
}
void OnSpaceUpdate(dbus::Signal* const signal) const {
Observer::SpaceEvent event;
if (!dbus::MessageReader(signal).PopArrayOfBytesAsProto(&event)) {
LOG(ERROR) << "Cannot parse StatefulDiskSpaceUpdate proto";
return;
}
for (Observer& observer : observers_) {
observer.OnSpaceUpdate(event);
}
}
void OnSignalConnected(const std::string& interface_name,
const std::string& signal_name,
const bool connected) {
connected_ = connected;
LOG_IF(ERROR, !connected)
<< "Cannot connect to StatefulDiskSpaceUpdate signal";
DCHECK_EQ(interface_name, kSpacedInterface);
DCHECK_EQ(signal_name, spaced::kStatefulDiskSpaceUpdate);
}
raw_ptr<dbus::ObjectProxy> proxy_ = nullptr;
// Note: This should remain the last member so it'll be destroyed and
// invalidate its weak pointers before any other members are destroyed.
base::WeakPtrFactory<SpacedClientImpl> weak_ptr_factory_{this};
};
} // namespace
SpacedClient::SpaceMaps::SpaceMaps(
std::map<uint32_t, int64_t>&& curspaces_for_uids,
std::map<uint32_t, int64_t>&& curspaces_for_gids,
std::map<uint32_t, int64_t>&& curspaces_for_project_ids)
: curspaces_for_uids(std::move(curspaces_for_uids)),
curspaces_for_gids(std::move(curspaces_for_gids)),
curspaces_for_project_ids(std::move(curspaces_for_project_ids)) {}
SpacedClient::SpaceMaps::~SpaceMaps() = default;
SpacedClient::SpaceMaps::SpaceMaps(const SpacedClient::SpaceMaps& other) =
default;
SpacedClient::SpacedClient() {
CHECK(!g_instance);
g_instance = this;
}
SpacedClient::~SpacedClient() {
CHECK_EQ(this, g_instance);
g_instance = nullptr;
}
// static
void SpacedClient::Initialize(dbus::Bus* bus) {
CHECK(bus);
(new SpacedClientImpl())->Init(bus);
}
// static
void SpacedClient::InitializeFake() {
new FakeSpacedClient();
}
// static
void SpacedClient::Shutdown() {
CHECK(g_instance);
delete g_instance;
// The destructor resets |g_instance|.
DCHECK(!g_instance);
}
// static
SpacedClient* SpacedClient::Get() {
return g_instance;
}
} // namespace ash
|
