1 // Copyright 2022 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "components/metrics/metrics_logs_event_manager.h"
6
7 #include <string_view>
8
9 namespace metrics {
10
11 // static
12 bool MetricsLogsEventManager::ScopedNotifyLogType::instance_exists_ = false;
13
ScopedNotifyLogType(MetricsLogsEventManager * logs_event_manager,MetricsLog::LogType log_type)14 MetricsLogsEventManager::ScopedNotifyLogType::ScopedNotifyLogType(
15 MetricsLogsEventManager* logs_event_manager,
16 MetricsLog::LogType log_type)
17 : logs_event_manager_(logs_event_manager) {
18 DCHECK(!instance_exists_);
19 instance_exists_ = true;
20 if (logs_event_manager_)
21 logs_event_manager_->NotifyLogType(log_type);
22 }
23
~ScopedNotifyLogType()24 MetricsLogsEventManager::ScopedNotifyLogType::~ScopedNotifyLogType() {
25 DCHECK(instance_exists_);
26 if (logs_event_manager_)
27 logs_event_manager_->NotifyLogType(std::nullopt);
28 instance_exists_ = false;
29 }
30
31 MetricsLogsEventManager::MetricsLogsEventManager() = default;
32 MetricsLogsEventManager::~MetricsLogsEventManager() = default;
33
AddObserver(Observer * observer)34 void MetricsLogsEventManager::AddObserver(Observer* observer) {
35 observers_.AddObserver(observer);
36 }
37
RemoveObserver(Observer * observer)38 void MetricsLogsEventManager::RemoveObserver(Observer* observer) {
39 observers_.RemoveObserver(observer);
40 }
41
NotifyLogCreated(std::string_view log_hash,std::string_view log_data,std::string_view log_timestamp,CreateReason reason)42 void MetricsLogsEventManager::NotifyLogCreated(std::string_view log_hash,
43 std::string_view log_data,
44 std::string_view log_timestamp,
45 CreateReason reason) {
46 for (Observer& observer : observers_)
47 observer.OnLogCreated(log_hash, log_data, log_timestamp, reason);
48 }
49
NotifyLogEvent(LogEvent event,std::string_view log_hash,std::string_view message)50 void MetricsLogsEventManager::NotifyLogEvent(LogEvent event,
51 std::string_view log_hash,
52 std::string_view message) {
53 for (Observer& observer : observers_)
54 observer.OnLogEvent(event, log_hash, message);
55 }
56
NotifyLogType(std::optional<MetricsLog::LogType> log_type)57 void MetricsLogsEventManager::NotifyLogType(
58 std::optional<MetricsLog::LogType> log_type) {
59 for (Observer& observer : observers_)
60 observer.OnLogType(log_type);
61 }
62
63 } // namespace metrics
64