1 /*
2 * Copyright (C) 2023 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 "mdns_client_resume.h"
17
18 #include <condition_variable>
19 #include <mutex>
20 #include <unistd.h>
21 #include <thread>
22
23 #include "iservice_registry.h"
24 #include "netmgr_ext_log_wrapper.h"
25
26 #include "mdns_common.h"
27 #include "mdns_client.h"
28
29 namespace OHOS {
30 namespace NetManagerStandard {
31 static constexpr uint32_t MAX_GET_SERVICE_COUNT = 30;
32 constexpr uint32_t WAIT_FOR_SERVICE_TIME_S = 1;
Init()33 void MDnsClientResume::Init()
34 {
35 NETMGR_EXT_LOG_I("MDnsClientResume Init");
36 if (initFlag_) {
37 NETMGR_EXT_LOG_I("MDnsClientResume initialization is complete");
38 return;
39 }
40 initFlag_ = true;
41 }
42
GetInstance()43 MDnsClientResume &MDnsClientResume::GetInstance()
44 {
45 static MDnsClientResume singleInstance_;
46 static std::mutex mutex_;
47 std::unique_lock<std::mutex> lock(mutex_);
48 if (!singleInstance_.initFlag_) {
49 singleInstance_.Init();
50 }
51
52 return singleInstance_;
53 }
54
ReRegisterService()55 void MDnsClientResume::ReRegisterService()
56 {
57 std::lock_guard<std::recursive_mutex> guard(registerMutex_);
58 for (const auto& [key, value]: registerMap_) {
59 auto ret = DelayedSingleton<MDnsClient>::GetInstance()->RegisterService(value, key);
60 if (ret != NETMANAGER_EXT_SUCCESS) {
61 NETMGR_EXT_LOG_E("ReRegisterService error, service name is %{public}s", value.name.c_str());
62 }
63 }
64 }
65
RestartDiscoverService()66 void MDnsClientResume::RestartDiscoverService()
67 {
68 std::lock_guard<std::recursive_mutex> guard(discoveryMutex_);
69 for (const auto& [key, value]: discoveryMap_) {
70 uint32_t count = 0;
71 while (DelayedSingleton<MDnsClient>::GetInstance()->GetProxy() == nullptr && count < MAX_GET_SERVICE_COUNT) {
72 std::this_thread::sleep_for(std::chrono::seconds(WAIT_FOR_SERVICE_TIME_S));
73 count++;
74 }
75 auto proxy = DelayedSingleton<MDnsClient>::GetInstance()->GetProxy();
76 NETMGR_EXT_LOG_W("Get proxy %{public}s, count: %{public}u", proxy == nullptr ? "failed" : "success", count);
77 if (proxy != nullptr) {
78 auto ret = DelayedSingleton<MDnsClient>::GetInstance()->StartDiscoverService(value, key);
79 if (ret != NETMANAGER_EXT_SUCCESS) {
80 NETMGR_EXT_LOG_E("RestartDiscoverService error, errorCode: %{public}d", ret);
81 }
82 }
83 }
84 }
85
SaveRegisterService(const MDnsServiceInfo &serviceInfo, const sptr<IRegistrationCallback> &cb)86 int32_t MDnsClientResume::SaveRegisterService(const MDnsServiceInfo &serviceInfo, const sptr<IRegistrationCallback> &cb)
87 {
88 NETMGR_EXT_LOG_D("registerMap_.emplace......");
89 std::lock_guard<std::recursive_mutex> guard(registerMutex_);
90 registerMap_.emplace(cb, serviceInfo);
91 NETMGR_EXT_LOG_D("registerMap_.emplace......[ok]");
92 return 0;
93 }
94
RemoveRegisterService(const sptr<IRegistrationCallback> &cb)95 int32_t MDnsClientResume::RemoveRegisterService(const sptr<IRegistrationCallback> &cb)
96 {
97 std::lock_guard<std::recursive_mutex> guard(registerMutex_);
98 auto itr = registerMap_.find(cb);
99 if (registerMap_.end() != itr) {
100 NETMGR_EXT_LOG_D("registerMap_.erase......");
101 registerMap_.erase(itr);
102 NETMGR_EXT_LOG_D("registerMap_.erase......[ok]");
103 }
104 return 0;
105 }
106
SaveStartDiscoverService(const std::string &serviceType, const sptr<IDiscoveryCallback> &cb)107 int32_t MDnsClientResume::SaveStartDiscoverService(const std::string &serviceType, const sptr<IDiscoveryCallback> &cb)
108 {
109 NETMGR_EXT_LOG_D("discoveryMap_.emplace......");
110 {
111 std::lock_guard<std::recursive_mutex> guard(discoveryMutex_);
112 if (discoveryMap_.find(cb) != discoveryMap_.end()) {
113 NETMGR_EXT_LOG_D("discoveryMap_.emplace......[ok]");
114 return 0;
115 }
116 discoveryMap_.emplace(cb, serviceType);
117 }
118 NETMGR_EXT_LOG_D("discoveryMap_.emplace......[ok]");
119
120 return 0;
121 }
122
RemoveStopDiscoverService(const sptr<IDiscoveryCallback> &cb)123 int32_t MDnsClientResume::RemoveStopDiscoverService(const sptr<IDiscoveryCallback> &cb)
124 {
125 NETMGR_EXT_LOG_D("discoveryMap_.erase......");
126
127 {
128 std::lock_guard<std::recursive_mutex> guard(discoveryMutex_);
129 auto itr = discoveryMap_.find(cb);
130 if (discoveryMap_.end() != itr) {
131 discoveryMap_.erase(itr);
132 }
133 }
134
135 NETMGR_EXT_LOG_D("discoveryMap_.erase......[ok]");
136
137 return 0;
138 }
139 } // namespace NetManagerStandard
140 } // namespace OHOS