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
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "json_formatter.h"
namespace vespalib {
namespace metrics {
JsonFormatter::JsonFormatter(const Snapshot &snapshot)
: _data(),
_top(_data.setObject()),
_snapLen(snapshot.endTime() - snapshot.startTime())
{
if (_snapLen < 0.1) {
_snapLen = 0.1;
}
// cosmetics: ordering inside objects
_data.insert("name");
_data.insert("dimensions");
vespalib::slime::Cursor& meta = _top.setObject("snapshot");
meta.setLong("from", (long)snapshot.startTime());
meta.setLong("to", (long)snapshot.endTime());
handle(snapshot, _top.setArray("values"));
}
void
JsonFormatter::handle(const Snapshot &snapshot, vespalib::slime::Cursor &target)
{
for (const CounterSnapshot &entry : snapshot.counters()) {
handle(entry, target.addObject());
}
for (const GaugeSnapshot &entry : snapshot.gauges()) {
handle(entry, target.addObject());
}
}
void
JsonFormatter::handle(const CounterSnapshot &snapshot, vespalib::slime::Cursor &target)
{
target.setString("name", snapshot.name());
// target.setString("description", ?);
handle(snapshot.point(), target);
Cursor& inner = target.setObject("values");
inner.setLong("count", snapshot.count());
inner.setDouble("rate", snapshot.count() / _snapLen);
}
void
JsonFormatter::handle(const GaugeSnapshot &snapshot, vespalib::slime::Cursor &target)
{
target.setString("name", snapshot.name());
// target.setString("description", ?);
handle(snapshot.point(), target);
Cursor& inner = target.setObject("values");
inner.setDouble("average", snapshot.averageValue());
inner.setDouble("sum", snapshot.sumValue());
inner.setDouble("min", snapshot.minValue());
inner.setDouble("max", snapshot.maxValue());
inner.setDouble("last", snapshot.lastValue());
inner.setLong("count", snapshot.observedCount());
inner.setDouble("rate", snapshot.observedCount() / _snapLen);
}
void
JsonFormatter::handle(const PointSnapshot &snapshot, vespalib::slime::Cursor &target)
{
if (snapshot.dimensions.size() == 0) {
return;
}
Cursor& inner = target.setObject("dimensions");
for (const DimensionBinding &entry : snapshot.dimensions) {
inner.setString(entry.dimensionName(), entry.labelValue());
}
}
} // namespace vespalib::metrics
} // namespace vespalib
|
