1 /*
2 * Copyright (c) 2021 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 "distributed_hardware_manager_factory.h"
17
18 #include <dlfcn.h>
19 #include <memory>
20
21 #include "distributed_hardware_errno.h"
22 #include "distributed_hardware_log.h"
23
24 namespace OHOS {
25 namespace DistributedHardware {
26 const char* LIB_NAME = "libdistributedhardwarefwksvr_impl.z.so";
27 const std::string FUNC_GET_INSTANCE = "GetDistributedHardwareManagerInstance";
28
29 #undef DH_LOG_TAG
30 #define DH_LOG_TAG "DistributedHardwareManagerFactory"
31
32 using GetMgrFunc = IDistributedHardwareManager *(*)();
33
34 IMPLEMENT_SINGLE_INSTANCE(DistributedHardwareManagerFactory);
35
Init()36 bool DistributedHardwareManagerFactory::Init()
37 {
38 DHLOGI("start");
39
40 auto loadResult = LoadLibrary();
41 if (loadResult != DH_FWK_SUCCESS) {
42 DHLOGE("LoadLibrary failed, errCode = %d", loadResult);
43 return false;
44 }
45
46 auto initResult = distributedHardwareMgrPtr_->Initialize();
47 if (initResult != DH_FWK_SUCCESS) {
48 DHLOGE("Initialize failed, errCode = %d", initResult);
49 return false;
50 }
51 DHLOGD("success");
52
53 return true;
54 }
55
UnInit()56 void DistributedHardwareManagerFactory::UnInit()
57 {
58 DHLOGI("start");
59
60 // release all the resources synchronously
61 distributedHardwareMgrPtr_->Release();
62
63 CloseLibrary();
64 DHLOGD("success");
65 }
66
IsInit()67 bool DistributedHardwareManagerFactory::IsInit()
68 {
69 std::lock_guard<std::mutex> lock(mutex_);
70 if (distributedHardwareMgrPtr_ == nullptr) {
71 DHLOGE("distributedHardwareMgr is not Initialize");
72 return false;
73 }
74 return true;
75 }
76
SendOnLineEvent(const std::string & networkId,const std::string & uuid,uint16_t deviceType)77 int32_t DistributedHardwareManagerFactory::SendOnLineEvent(const std::string &networkId, const std::string &uuid,
78 uint16_t deviceType)
79 {
80 if (networkId.empty()) {
81 DHLOGE("networkId is empty");
82 return ERR_DH_FWK_REMOTE_NETWORK_ID_IS_EMPTY;
83 }
84
85 if (uuid.empty()) {
86 DHLOGE("uuid is empty");
87 return ERR_DH_FWK_REMOTE_DEVICE_ID_IS_EMPTY;
88 }
89
90 std::lock_guard<std::mutex> lock(mutex_);
91 if (distributedHardwareMgrPtr_ == nullptr && !Init()) {
92 DHLOGE("distributedHardwareMgr is null");
93 return ERR_DH_FWK_HARDWARE_MANAGER_LOAD_IMPL_FAILED;
94 }
95
96 auto onlineResult = distributedHardwareMgrPtr_->SendOnLineEvent(networkId, uuid, deviceType);
97 if (onlineResult != DH_FWK_SUCCESS) {
98 DHLOGE("online failed, errCode = %d", onlineResult);
99 return onlineResult;
100 }
101 return DH_FWK_SUCCESS;
102 }
103
SendOffLineEvent(const std::string & networkId,const std::string & uuid,uint16_t deviceType)104 int32_t DistributedHardwareManagerFactory::SendOffLineEvent(const std::string &networkId, const std::string &uuid,
105 uint16_t deviceType)
106 {
107 if (networkId.empty()) {
108 DHLOGE("networkId is empty");
109 return ERR_DH_FWK_REMOTE_NETWORK_ID_IS_EMPTY;
110 }
111
112 std::lock_guard<std::mutex> lock(mutex_);
113 if (distributedHardwareMgrPtr_ == nullptr) {
114 DHLOGE("distributedHardwareMgr is null");
115 return ERR_DH_FWK_HARDWARE_MANAGER_LOAD_IMPL_FAILED;
116 }
117
118 auto offlineResult = distributedHardwareMgrPtr_->SendOffLineEvent(networkId, uuid, deviceType);
119 if (offlineResult != DH_FWK_SUCCESS) {
120 DHLOGE("offline failed, errCode = %d", offlineResult);
121 return offlineResult;
122 }
123
124 if (distributedHardwareMgrPtr_->GetOnLineCount() == 0) {
125 DHLOGI("all devices are offline, start to free the resource");
126 UnInit();
127 }
128 return DH_FWK_SUCCESS;
129 }
130
LoadLibrary()131 int32_t DistributedHardwareManagerFactory::LoadLibrary()
132 {
133 DHLOGI("start.");
134 if (handler_ != nullptr && distributedHardwareMgrPtr_ != nullptr) {
135 DHLOGE("DistributedHardwareManager handler has loaded.");
136 return DH_FWK_SUCCESS;
137 }
138
139 handler_ = dlopen(LIB_NAME, RTLD_NOW | RTLD_NODELETE);
140 if (handler_ == nullptr) {
141 DHLOGE("open %s failed.", LIB_NAME);
142 return ERR_DH_FWK_HARDWARE_MANAGER_LIB_IMPL_OPEN_FAILED;
143 }
144
145 auto getManager = reinterpret_cast<GetMgrFunc>(dlsym(handler_, FUNC_GET_INSTANCE.c_str()));
146 if (getManager == nullptr) {
147 DHLOGE("can not find %s.", FUNC_GET_INSTANCE.c_str());
148 CloseLibrary();
149 return ERR_DH_FWK_HARDWARE_MANAGER_LIB_IMPL_GET_INSTANCE_FAILED;
150 }
151
152 distributedHardwareMgrPtr_ = getManager();
153 if (distributedHardwareMgrPtr_ == nullptr) {
154 DHLOGE("distributedHardwareMgrPtr is null.");
155 CloseLibrary();
156 return ERR_DH_FWK_HARDWARE_MANAGER_LIB_IMPL_IS_NULL;
157 }
158 DHLOGI("load %s success.", LIB_NAME);
159 return DH_FWK_SUCCESS;
160 }
161
CloseLibrary()162 void DistributedHardwareManagerFactory::CloseLibrary()
163 {
164 if (handler_ == nullptr) {
165 DHLOGI("%s is already closed.", LIB_NAME);
166 return;
167 }
168 distributedHardwareMgrPtr_ = nullptr;
169 dlclose(handler_);
170 handler_ = nullptr;
171 DHLOGI("%s is closed.", LIB_NAME);
172 }
173
GetComponentVersion(std::unordered_map<DHType,std::string> & versionMap)174 int32_t DistributedHardwareManagerFactory::GetComponentVersion(std::unordered_map<DHType, std::string> &versionMap)
175 {
176 DHLOGI("start");
177 std::lock_guard<std::mutex> lock(mutex_);
178 if (distributedHardwareMgrPtr_ == nullptr) {
179 DHLOGE("distributedHardwareMgr is null");
180 return ERR_DH_FWK_HARDWARE_MANAGER_LIB_IMPL_IS_NULL;
181 }
182 return distributedHardwareMgrPtr_->GetComponentVersion(versionMap);
183 }
184 }
185 }
186