1/*
2 * Copyright (c) 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 "hiview_remote_service.h"
17
18#include "hiview_logger.h"
19#include "iservice_registry.h"
20#include "system_ability_definition.h"
21
22namespace OHOS {
23namespace HiviewDFX {
24namespace RemoteService {
25namespace {
26DEFINE_LOG_TAG("HiViewRemoteService");
27sptr<IRemoteObject> g_hiviewServiceAbilityProxy = nullptr;
28sptr<IRemoteObject::DeathRecipient> g_deathRecipient = nullptr;
29std::mutex g_proxyMutex;
30}
31
32class HiviewServiceDeathRecipient : public IRemoteObject::DeathRecipient {
33public:
34    HiviewServiceDeathRecipient() {};
35    ~HiviewServiceDeathRecipient() = default;
36    DISALLOW_COPY_AND_MOVE(HiviewServiceDeathRecipient);
37
38    void OnRemoteDied(const wptr<IRemoteObject>& remote)
39    {
40        std::lock_guard<std::mutex> proxyGuard(g_proxyMutex);
41        if (g_hiviewServiceAbilityProxy == nullptr) {
42            HIVIEW_LOGW("hiview remote service died and local instance is null.");
43            return;
44        }
45
46        if (g_hiviewServiceAbilityProxy == remote.promote()) {
47            g_hiviewServiceAbilityProxy->RemoveDeathRecipient(g_deathRecipient);
48            g_hiviewServiceAbilityProxy = nullptr;
49            g_deathRecipient = nullptr;
50            HIVIEW_LOGW("hiview remote service died.");
51        } else {
52            HIVIEW_LOGW("unknown service died.");
53        }
54    }
55};
56
57sptr<IRemoteObject> GetHiViewRemoteService()
58{
59    std::lock_guard<std::mutex> proxyGuard(g_proxyMutex);
60    if (g_hiviewServiceAbilityProxy != nullptr) {
61        return g_hiviewServiceAbilityProxy;
62    }
63    HIVIEW_LOGI("refresh remote service instance.");
64    auto abilityManager = SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
65    if (abilityManager == nullptr) {
66        return nullptr;
67    }
68    g_hiviewServiceAbilityProxy = abilityManager->CheckSystemAbility(DFX_SYS_HIVIEW_ABILITY_ID);
69    if (g_hiviewServiceAbilityProxy == nullptr) {
70        HIVIEW_LOGE("get hiview ability failed.");
71        return nullptr;
72    }
73    g_deathRecipient = sptr<IRemoteObject::DeathRecipient>(new HiviewServiceDeathRecipient());
74    if (g_deathRecipient == nullptr) {
75        HIVIEW_LOGE("create service deathrecipient failed.");
76        g_hiviewServiceAbilityProxy = nullptr;
77        return nullptr;
78    }
79    g_hiviewServiceAbilityProxy->AddDeathRecipient(g_deathRecipient);
80    return g_hiviewServiceAbilityProxy;
81}
82} // namespace RemoteService
83} // namespace HiviewDFX
84} // namespace OHOS