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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
|
#pragma once
#include "metric_consumer.h"
#include <util/datetime/base.h>
#include <util/generic/ptr.h>
namespace NMonitoring {
///////////////////////////////////////////////////////////////////////////////
// IMetric
///////////////////////////////////////////////////////////////////////////////
class IMetric : public TThrRefBase {
public:
virtual ~IMetric() = default;
virtual EMetricType Type() const noexcept = 0;
virtual void Accept(TInstant time, IMetricConsumer* consumer) const = 0;
};
using IMetricPtr = TIntrusivePtr<IMetric>;
class IGauge: public IMetric {
public:
EMetricType Type() const noexcept final {
return EMetricType::GAUGE;
}
virtual double Add(double n) noexcept = 0;
virtual void Set(double n) noexcept = 0;
virtual double Get() const noexcept = 0;
virtual void Reset() noexcept {
Set(0);
}
};
class ILazyGauge: public IMetric {
public:
EMetricType Type() const noexcept final {
return EMetricType::GAUGE;
}
virtual double Get() const noexcept = 0;
};
class IIntGauge: public IMetric {
public:
EMetricType Type() const noexcept final {
return EMetricType::IGAUGE;
}
virtual i64 Add(i64 n) noexcept = 0;
virtual i64 Inc() noexcept {
return Add(1);
}
virtual i64 Dec() noexcept {
return Add(-1);
}
virtual void Set(i64 value) noexcept = 0;
virtual i64 Get() const noexcept = 0;
virtual void Reset() noexcept {
Set(0);
}
};
class ILazyIntGauge: public IMetric {
public:
EMetricType Type() const noexcept final {
return EMetricType::IGAUGE;
}
virtual i64 Get() const noexcept = 0;
};
class ICounter: public IMetric {
public:
EMetricType Type() const noexcept final {
return EMetricType::COUNTER;
}
virtual ui64 Inc() noexcept {
return Add(1);
}
virtual ui64 Add(ui64 n) noexcept = 0;
virtual ui64 Get() const noexcept = 0;
virtual void Reset() noexcept = 0;
};
class ILazyCounter: public IMetric {
public:
EMetricType Type() const noexcept final {
return EMetricType::COUNTER;
}
virtual ui64 Get() const noexcept = 0;
};
class IRate: public IMetric {
public:
EMetricType Type() const noexcept final {
return EMetricType::RATE;
}
virtual ui64 Inc() noexcept {
return Add(1);
}
virtual ui64 Add(ui64 n) noexcept = 0;
virtual ui64 Get() const noexcept = 0;
virtual void Reset() noexcept = 0;
};
class ILazyRate: public IMetric {
public:
EMetricType Type() const noexcept final {
return EMetricType::RATE;
}
virtual ui64 Get() const noexcept = 0;
};
class IHistogram: public IMetric {
public:
explicit IHistogram(bool isRate)
: IsRate_{isRate}
{
}
EMetricType Type() const noexcept final {
return IsRate_ ? EMetricType::HIST_RATE : EMetricType::HIST;
}
virtual void Record(double value) = 0;
virtual void Record(double value, ui32 count) = 0;
virtual IHistogramSnapshotPtr TakeSnapshot() const = 0;
virtual void Reset() = 0;
protected:
const bool IsRate_;
};
///////////////////////////////////////////////////////////////////////////////
// TGauge
///////////////////////////////////////////////////////////////////////////////
class TGauge final: public IGauge {
public:
explicit TGauge(double value = 0.0) {
Set(value);
}
double Add(double n) noexcept override {
double newValue;
double oldValue = Get();
do {
newValue = oldValue + n;
} while (!Value_.compare_exchange_weak(oldValue, newValue, std::memory_order_release, std::memory_order_consume));
return newValue;
}
void Set(double n) noexcept override {
Value_.store(n, std::memory_order_relaxed);
}
double Get() const noexcept override {
return Value_.load(std::memory_order_relaxed);
}
void Accept(TInstant time, IMetricConsumer* consumer) const override {
consumer->OnDouble(time, Get());
}
private:
std::atomic<double> Value_;
};
///////////////////////////////////////////////////////////////////////////////
// TLazyGauge
///////////////////////////////////////////////////////////////////////////////
class TLazyGauge final: public ILazyGauge {
public:
explicit TLazyGauge(std::function<double()> supplier)
: Supplier_(std::move(supplier))
{
}
double Get() const noexcept override {
return Supplier_();
}
void Accept(TInstant time, IMetricConsumer* consumer) const override {
consumer->OnDouble(time, Get());
}
private:
std::function<double()> Supplier_;
};
///////////////////////////////////////////////////////////////////////////////
// TIntGauge
///////////////////////////////////////////////////////////////////////////////
class TIntGauge final: public IIntGauge {
public:
explicit TIntGauge(i64 value = 0) {
Set(value);
}
i64 Add(i64 n) noexcept override {
return Value_.fetch_add(n, std::memory_order_relaxed) + n;
}
void Set(i64 value) noexcept override {
Value_.store(value, std::memory_order_relaxed);
}
i64 Get() const noexcept override {
return Value_.load(std::memory_order_relaxed);
}
void Accept(TInstant time, IMetricConsumer* consumer) const override {
consumer->OnInt64(time, Get());
}
private:
std::atomic_int64_t Value_;
};
///////////////////////////////////////////////////////////////////////////////
// TLazyIntGauge
///////////////////////////////////////////////////////////////////////////////
class TLazyIntGauge final: public ILazyIntGauge {
public:
explicit TLazyIntGauge(std::function<i64()> supplier)
: Supplier_(std::move(supplier))
{
}
i64 Get() const noexcept override {
return Supplier_();
}
void Accept(TInstant time, IMetricConsumer* consumer) const override {
consumer->OnInt64(time, Get());
}
private:
std::function<i64()> Supplier_;
};
///////////////////////////////////////////////////////////////////////////////
// TCounter
///////////////////////////////////////////////////////////////////////////////
class TCounter final: public ICounter {
public:
explicit TCounter(ui64 value = 0) {
Value_.store(value, std::memory_order_relaxed);
}
ui64 Add(ui64 n) noexcept override {
return Value_.fetch_add(n, std::memory_order_relaxed) + n;
}
ui64 Get() const noexcept override {
return Value_.load(std::memory_order_relaxed);
}
void Reset() noexcept override {
Value_.store(0, std::memory_order_relaxed);
}
void Accept(TInstant time, IMetricConsumer* consumer) const override {
consumer->OnUint64(time, Get());
}
private:
std::atomic_uint64_t Value_;
};
///////////////////////////////////////////////////////////////////////////////
// TLazyCounter
///////////////////////////////////////////////////////////////////////////////
class TLazyCounter final: public ILazyCounter {
public:
explicit TLazyCounter(std::function<ui64()> supplier)
: Supplier_(std::move(supplier))
{
}
ui64 Get() const noexcept override {
return Supplier_();
}
void Accept(TInstant time, IMetricConsumer* consumer) const override {
consumer->OnUint64(time, Get());
}
private:
std::function<ui64()> Supplier_;
};
///////////////////////////////////////////////////////////////////////////////
// TRate
///////////////////////////////////////////////////////////////////////////////
class TRate final: public IRate {
public:
explicit TRate(ui64 value = 0) {
Value_.store(value, std::memory_order_relaxed);
}
ui64 Add(ui64 n) noexcept override {
return Value_.fetch_add(n, std::memory_order_relaxed) + n;
}
ui64 Get() const noexcept override {
return Value_.load(std::memory_order_relaxed);
}
void Reset() noexcept override {
Value_.store(0, std::memory_order_relaxed);
}
void Accept(TInstant time, IMetricConsumer* consumer) const override {
consumer->OnUint64(time, Get());
}
private:
std::atomic_uint64_t Value_;
};
///////////////////////////////////////////////////////////////////////////////
// TLazyRate
///////////////////////////////////////////////////////////////////////////////
class TLazyRate final: public ILazyRate {
public:
explicit TLazyRate(std::function<ui64()> supplier)
: Supplier_(std::move(supplier))
{
}
ui64 Get() const noexcept override {
return Supplier_();
}
void Accept(TInstant time, IMetricConsumer* consumer) const override {
consumer->OnUint64(time, Get());
}
private:
std::function<ui64()> Supplier_;
};
///////////////////////////////////////////////////////////////////////////////
// THistogram
///////////////////////////////////////////////////////////////////////////////
class THistogram final: public IHistogram {
public:
THistogram(IHistogramCollectorPtr collector, bool isRate)
: IHistogram(isRate)
, Collector_(std::move(collector))
{
}
THistogram(std::function<IHistogramCollectorPtr()> makeHistogramCollector, bool isRate)
: IHistogram(isRate)
, Collector_(makeHistogramCollector())
{
}
void Record(double value) override {
Collector_->Collect(value);
}
void Record(double value, ui32 count) override {
Collector_->Collect(value, count);
}
void Accept(TInstant time, IMetricConsumer* consumer) const override {
consumer->OnHistogram(time, TakeSnapshot());
}
IHistogramSnapshotPtr TakeSnapshot() const override {
return Collector_->Snapshot();
}
void Reset() override {
Collector_->Reset();
}
private:
IHistogramCollectorPtr Collector_;
};
}
|
