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 "napi_observer.h"
17
18 #include "datashare_js_utils.h"
19 #include "datashare_log.h"
20
21 namespace OHOS {
22 namespace DataShare {
NapiObserver(napi_env env,napi_value callback)23 NapiObserver::NapiObserver(napi_env env, napi_value callback) : env_(env)
24 {
25 napi_create_reference(env, callback, 1, &ref_);
26 napi_get_uv_event_loop(env, &loop_);
27 }
28
CallbackFunc(ObserverWorker * observerWorker)29 void NapiObserver::CallbackFunc(ObserverWorker *observerWorker)
30 {
31 LOG_DEBUG("ObsCallbackFunc start");
32 std::shared_ptr<NapiObserver> observer = observerWorker->observer_.lock();
33 if (observer == nullptr || observer->ref_ == nullptr) {
34 LOG_ERROR("rdbObserver->ref_ is nullptr");
35 delete observerWorker;
36 return;
37 }
38 napi_handle_scope scope = nullptr;
39 napi_open_handle_scope(observer->env_, &scope);
40 if (scope == nullptr) {
41 LOG_ERROR("scope is nullptr");
42 delete observerWorker;
43 return;
44 }
45 napi_value callback = nullptr;
46 napi_value param[2];
47 napi_value global = nullptr;
48 napi_value result;
49 napi_get_reference_value(observer->env_, observer->ref_, &callback);
50 napi_get_global(observer->env_, &global);
51 napi_get_undefined(observer->env_, ¶m[0]);
52 param[1] = observerWorker->getParam(observer->env_);
53 napi_status callStatus = napi_call_function(observer->env_, global, callback, 2, param, &result);
54 napi_close_handle_scope(observer->env_, scope);
55 if (callStatus != napi_ok) {
56 LOG_ERROR("napi_call_function failed status : %{public}d", callStatus);
57 }
58 LOG_DEBUG("napi_call_function succeed status : %{public}d", callStatus);
59 delete observerWorker;
60 }
61
~NapiObserver()62 NapiObserver::~NapiObserver()
63 {
64 if (ref_ != nullptr) {
65 auto task = [env = env_, ref = ref_]() {
66 napi_delete_reference(env, ref);
67 };
68 int ret = napi_send_event(env_, task, napi_eprio_immediate);
69 if (ret != 0) {
70 LOG_ERROR("napi_send_event failed: %{public}d", ret);
71 }
72 ref_ = nullptr;
73 }
74 }
75
operator ==(const NapiObserver & rhs) const76 bool NapiObserver::operator==(const NapiObserver &rhs) const
77 {
78 if (ref_ == nullptr) {
79 return (rhs.ref_ == nullptr);
80 }
81
82 napi_value value1 = nullptr;
83 napi_get_reference_value(env_, ref_, &value1);
84
85 napi_value value2 = nullptr;
86 napi_get_reference_value(env_, rhs.ref_, &value2);
87
88 bool isEqual = false;
89 napi_strict_equals(env_, value1, value2, &isEqual);
90 return isEqual;
91 }
92
operator !=(const NapiObserver & rhs) const93 bool NapiObserver::operator!=(const NapiObserver &rhs) const
94 {
95 return !(rhs == *this);
96 }
97
OnChange(const RdbChangeNode & changeNode)98 void NapiRdbObserver::OnChange(const RdbChangeNode &changeNode)
99 {
100 LOG_DEBUG("NapiRdbObserver onchange Start");
101 if (ref_ == nullptr) {
102 LOG_ERROR("ref_ is nullptr");
103 return;
104 }
105 ObserverWorker *observerWorker = new (std::nothrow) ObserverWorker(shared_from_this());
106 if (observerWorker == nullptr) {
107 LOG_ERROR("Failed to create observerWorker");
108 return;
109 }
110 observerWorker->getParam = [changeNode](napi_env env) {
111 return DataShareJSUtils::Convert2JSValue(env, changeNode);
112 };
113
114 auto task = [observerWorker]() {
115 NapiObserver::CallbackFunc(observerWorker);
116 };
117 int ret = napi_send_event(env_, task, napi_eprio_immediate);
118 if (ret != 0) {
119 LOG_ERROR("napi_send_event failed: %{public}d", ret);
120 delete observerWorker;
121 }
122 LOG_DEBUG("NapiRdbObserver onchange End: %{public}d", ret);
123 }
124
OnChange(PublishedDataChangeNode & changeNode)125 void NapiPublishedObserver::OnChange(PublishedDataChangeNode &changeNode)
126 {
127 LOG_DEBUG("NapiPublishedObserver onchange Start");
128 if (ref_ == nullptr) {
129 LOG_ERROR("ref_ is nullptr");
130 return;
131 }
132 ObserverWorker *observerWorker = new (std::nothrow) ObserverWorker(shared_from_this());
133 if (observerWorker == nullptr) {
134 LOG_ERROR("Failed to create observerWorker");
135 return;
136 }
137 std::shared_ptr<PublishedDataChangeNode> node = std::make_shared<PublishedDataChangeNode>(std::move(changeNode));
138 observerWorker->getParam = [node](napi_env env) {
139 return DataShareJSUtils::Convert2JSValue(env, *node);
140 };
141
142 auto task = [observerWorker]() {
143 NapiObserver::CallbackFunc(observerWorker);
144 };
145 int ret = napi_send_event(env_, task, napi_eprio_immediate);
146 if (ret != 0) {
147 LOG_ERROR("napi_send_event failed: %{public}d", ret);
148 delete observerWorker;
149 }
150 LOG_DEBUG("NapiRdbObserver onchange End: %{public}d", ret);
151 }
152 } // namespace DataShare
153 } // namespace OHOS
154