1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#ifndef EVENTQUEUE_H
#define EVENTQUEUE_H
#include "remote/httphandler.hpp"
#include "base/object.hpp"
#include "config/expression.hpp"
#include <boost/asio/deadline_timer.hpp>
#include <boost/asio/spawn.hpp>
#include <condition_variable>
#include <cstddef>
#include <cstdint>
#include <mutex>
#include <set>
#include <map>
#include <deque>
#include <queue>
namespace icinga
{
class EventQueue final : public Object
{
public:
DECLARE_PTR_TYPEDEFS(EventQueue);
EventQueue(String name);
bool CanProcessEvent(const String& type) const;
void ProcessEvent(const Dictionary::Ptr& event);
void AddClient(void *client);
void RemoveClient(void *client);
void SetTypes(const std::set<String>& types);
void SetFilter(std::unique_ptr<Expression> filter);
Dictionary::Ptr WaitForEvent(void *client, double timeout = 5);
static std::vector<EventQueue::Ptr> GetQueuesForType(const String& type);
static void UnregisterIfUnused(const String& name, const EventQueue::Ptr& queue);
static EventQueue::Ptr GetByName(const String& name);
static void Register(const String& name, const EventQueue::Ptr& function);
static void Unregister(const String& name);
private:
String m_Name;
mutable std::mutex m_Mutex;
std::condition_variable m_CV;
std::set<String> m_Types;
std::unique_ptr<Expression> m_Filter;
std::map<void *, std::deque<Dictionary::Ptr> > m_Events;
};
/**
* A registry for API event queues.
*
* @ingroup base
*/
class EventQueueRegistry : public Registry<EventQueueRegistry, EventQueue::Ptr>
{
public:
static EventQueueRegistry *GetInstance();
};
enum class EventType : uint_fast8_t
{
AcknowledgementCleared,
AcknowledgementSet,
CheckResult,
CommentAdded,
CommentRemoved,
DowntimeAdded,
DowntimeRemoved,
DowntimeStarted,
DowntimeTriggered,
Flapping,
Notification,
StateChange,
ObjectCreated,
ObjectDeleted,
ObjectModified
};
class EventsInbox : public Object
{
public:
DECLARE_PTR_TYPEDEFS(EventsInbox);
EventsInbox(String filter, const String& filterSource);
EventsInbox(const EventsInbox&) = delete;
EventsInbox(EventsInbox&&) = delete;
EventsInbox& operator=(const EventsInbox&) = delete;
EventsInbox& operator=(EventsInbox&&) = delete;
~EventsInbox();
const Expression::Ptr& GetFilter();
void Push(Dictionary::Ptr event);
Dictionary::Ptr Shift(boost::asio::yield_context yc, double timeout = 5);
private:
struct Filter
{
std::size_t Refs;
Expression::Ptr Expr;
};
static std::mutex m_FiltersMutex;
static std::map<String, Filter> m_Filters;
std::mutex m_Mutex;
decltype(m_Filters.begin()) m_Filter;
std::queue<Dictionary::Ptr> m_Queue;
boost::asio::deadline_timer m_Timer;
};
class EventsSubscriber
{
public:
EventsSubscriber(std::set<EventType> types, String filter, const String& filterSource);
EventsSubscriber(const EventsSubscriber&) = delete;
EventsSubscriber(EventsSubscriber&&) = delete;
EventsSubscriber& operator=(const EventsSubscriber&) = delete;
EventsSubscriber& operator=(EventsSubscriber&&) = delete;
~EventsSubscriber();
const EventsInbox::Ptr& GetInbox();
private:
std::set<EventType> m_Types;
EventsInbox::Ptr m_Inbox;
};
class EventsFilter
{
public:
EventsFilter(std::map<Expression::Ptr, std::set<EventsInbox::Ptr>> inboxes);
operator bool();
void Push(Dictionary::Ptr event);
private:
std::map<Expression::Ptr, std::set<EventsInbox::Ptr>> m_Inboxes;
};
class EventsRouter
{
public:
static EventsRouter& GetInstance();
void Subscribe(const std::set<EventType>& types, const EventsInbox::Ptr& inbox);
void Unsubscribe(const std::set<EventType>& types, const EventsInbox::Ptr& inbox);
EventsFilter GetInboxes(EventType type);
private:
static EventsRouter m_Instance;
EventsRouter() = default;
EventsRouter(const EventsRouter&) = delete;
EventsRouter(EventsRouter&&) = delete;
EventsRouter& operator=(const EventsRouter&) = delete;
EventsRouter& operator=(EventsRouter&&) = delete;
~EventsRouter() = default;
std::mutex m_Mutex;
std::map<EventType, std::map<Expression::Ptr, std::set<EventsInbox::Ptr>>> m_Subscribers;
};
}
#endif /* EVENTQUEUE_H */
|
