1 /*
2 * Copyright (c) 2021-2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "data_ability_observer_proxy.h"
17 #include "hilog_tag_wrapper.h"
18 #include "message_parcel.h"
19
20 namespace OHOS {
21 namespace AAFwk {
22 static constexpr uint32_t MESSAGE_MAX_COUNT = 50;
DataAbilityObserverProxy(const sptr<IRemoteObject> & remote)23 DataAbilityObserverProxy::DataAbilityObserverProxy(const sptr<IRemoteObject> &remote)
24 : IRemoteProxy<IDataAbilityObserver>(remote)
25 {}
~DataAbilityObserverProxy()26 DataAbilityObserverProxy::~DataAbilityObserverProxy()
27 {}
28
29 /**
30 * @brief Set the message option.
31 *
32 * @param option Indicates the option of message.
33 */
SetMessageOption(MessageOption & option)34 void DataAbilityObserverProxy::SetMessageOption(MessageOption &option)
35 {
36 std::lock_guard<std::mutex> lock(countMutex_);
37 // Send a wakeup IPC every 50 times. Otherwise, send a non-wakeup IPC.
38 if (messageCount_ >= MESSAGE_MAX_COUNT) {
39 option = MessageOption(MessageOption::TF_ASYNC);
40 messageCount_ = 0;
41 } else {
42 option = MessageOption(MessageOption::TF_ASYNC | MessageOption::TF_ASYNC_WAKEUP_LATER);
43 messageCount_++;
44 }
45 }
46
47 /**
48 * @brief Called back to notify that the data being observed has changed.
49 *
50 * @param uri Indicates the path of the data to operate.
51 */
OnChange()52 void DataAbilityObserverProxy::OnChange()
53 {
54 OHOS::MessageParcel data;
55 OHOS::MessageParcel reply;
56 MessageOption option;
57 SetMessageOption(option);
58
59 if (!data.WriteInterfaceToken(DataAbilityObserverProxy::GetDescriptor())) {
60 TAG_LOGE(AAFwkTag::DBOBSMGR, "write token false");
61 return;
62 }
63
64 int result = SendTransactCmd(IDataAbilityObserver::DATA_ABILITY_OBSERVER_CHANGE, data, reply, option);
65 if (result != ERR_NONE) {
66 TAG_LOGE(AAFwkTag::DBOBSMGR, "error,result:%{public}d", result);
67 }
68 }
69
70 /**
71 * @brief Called back to notify that the data being observed has changed.
72 *
73 * @param changeInfo Indicates the info of the data to operate.
74 */
OnChangeExt(const ChangeInfo & changeInfo)75 void DataAbilityObserverProxy::OnChangeExt(const ChangeInfo &changeInfo)
76 {
77 OHOS::MessageParcel data;
78 OHOS::MessageParcel reply;
79 MessageOption option;
80 SetMessageOption(option);
81
82 if (!data.WriteInterfaceToken(DataAbilityObserverProxy::GetDescriptor())) {
83 TAG_LOGE(AAFwkTag::DBOBSMGR, "write token false");
84 return;
85 }
86
87 if (!ChangeInfo::Marshalling(changeInfo, data)) {
88 TAG_LOGE(AAFwkTag::DBOBSMGR, "changeInfo marshalling fail");
89 return;
90 }
91
92 int result = SendTransactCmd(IDataAbilityObserver::DATA_ABILITY_OBSERVER_CHANGE_EXT, data, reply, option);
93 if (result != ERR_NONE) {
94 TAG_LOGE(AAFwkTag::DBOBSMGR, "error result:%{public}d", result);
95 }
96 }
97
98 /**
99 * @brief Called back to notify that the data being observed has changed.
100 *
101 * @param uri Indicates the path of the data to operate.
102 */
OnChangePreferences(const std::string & key)103 void DataAbilityObserverProxy::OnChangePreferences(const std::string &key)
104 {
105 OHOS::MessageParcel data;
106 OHOS::MessageParcel reply;
107 MessageOption option;
108 SetMessageOption(option);
109
110 if (!data.WriteInterfaceToken(DataAbilityObserverProxy::GetDescriptor())) {
111 TAG_LOGE(AAFwkTag::DBOBSMGR, "write token false");
112 return;
113 }
114
115 if (!data.WriteString(key)) {
116 TAG_LOGE(AAFwkTag::DBOBSMGR, "write string false");
117 return;
118 }
119
120 int result =
121 SendTransactCmd(IDataAbilityObserver::DATA_ABILITY_OBSERVER_CHANGE_PREFERENCES, data, reply, option);
122 if (result != ERR_NONE) {
123 TAG_LOGE(AAFwkTag::DBOBSMGR, "error result:%{public}d", result);
124 }
125 }
126
SendTransactCmd(uint32_t code,MessageParcel & data,MessageParcel & reply,MessageOption & option)127 int32_t DataAbilityObserverProxy::SendTransactCmd(uint32_t code, MessageParcel &data,
128 MessageParcel &reply, MessageOption &option)
129 {
130 sptr<IRemoteObject> remote = Remote();
131 if (remote == nullptr) {
132 TAG_LOGE(AAFwkTag::DBOBSMGR, "null remote");
133 return ERR_NULL_OBJECT;
134 }
135
136 return remote->SendRequest(code, data, reply, option);
137 }
138
139 } // namespace AAFwk
140 } // namespace OHOS
141