forked from ClickHouse/ClickHouse
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathPrometheusMetricsWriter.cpp
More file actions
137 lines (111 loc) · 4.61 KB
/
PrometheusMetricsWriter.cpp
File metadata and controls
137 lines (111 loc) · 4.61 KB
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
#include "PrometheusMetricsWriter.h"
#include <algorithm>
#include <IO/WriteHelpers.h>
#include <Common/StatusInfo.h>
#include <boost/algorithm/string/replace.hpp>
namespace
{
template <typename T>
void writeOutLine(DB::WriteBuffer & wb, T && val)
{
DB::writeText(std::forward<T>(val), wb);
DB::writeChar('\n', wb);
}
template <typename T, typename... TArgs>
void writeOutLine(DB::WriteBuffer & wb, T && val, TArgs &&... args)
{
DB::writeText(std::forward<T>(val), wb);
DB::writeChar(' ', wb);
writeOutLine(wb, std::forward<TArgs>(args)...);
}
void replaceInvalidChars(std::string & metric_name)
{
std::replace(metric_name.begin(), metric_name.end(), '.', '_');
}
}
namespace DB
{
PrometheusMetricsWriter::PrometheusMetricsWriter(
const Poco::Util::AbstractConfiguration & config, const std::string & config_name,
const AsynchronousMetrics & async_metrics_)
: async_metrics(async_metrics_)
, send_events(config.getBool(config_name + ".events", true))
, send_metrics(config.getBool(config_name + ".metrics", true))
, send_asynchronous_metrics(config.getBool(config_name + ".asynchronous_metrics", true))
, send_status_info(config.getBool(config_name + ".status_info", true))
{
}
void PrometheusMetricsWriter::write(WriteBuffer & wb) const
{
if (send_events)
{
for (size_t i = 0, end = ProfileEvents::end(); i < end; ++i)
{
const auto counter = ProfileEvents::global_counters[i].load(std::memory_order_relaxed);
std::string metric_name{ProfileEvents::getName(static_cast<ProfileEvents::Event>(i))};
std::string metric_doc{ProfileEvents::getDocumentation(static_cast<ProfileEvents::Event>(i))};
replaceInvalidChars(metric_name);
std::string key{profile_events_prefix + metric_name};
writeOutLine(wb, "# HELP", key, metric_doc);
writeOutLine(wb, "# TYPE", key, "counter");
writeOutLine(wb, key, counter);
}
}
if (send_metrics)
{
for (size_t i = 0, end = CurrentMetrics::end(); i < end; ++i)
{
const auto value = CurrentMetrics::values[i].load(std::memory_order_relaxed);
std::string metric_name{CurrentMetrics::getName(static_cast<CurrentMetrics::Metric>(i))};
std::string metric_doc{CurrentMetrics::getDocumentation(static_cast<CurrentMetrics::Metric>(i))};
replaceInvalidChars(metric_name);
std::string key{current_metrics_prefix + metric_name};
writeOutLine(wb, "# HELP", key, metric_doc);
writeOutLine(wb, "# TYPE", key, "gauge");
writeOutLine(wb, key, value);
}
}
if (send_asynchronous_metrics)
{
auto async_metrics_values = async_metrics.getValues();
for (const auto & name_value : async_metrics_values)
{
std::string key{asynchronous_metrics_prefix + name_value.first};
replaceInvalidChars(key);
auto value = name_value.second;
// TODO: add HELP section? asynchronous_metrics contains only key and value
writeOutLine(wb, "# TYPE", key, "gauge");
writeOutLine(wb, key, value);
}
}
if (send_status_info)
{
for (size_t i = 0, end = CurrentStatusInfo::end(); i < end; ++i)
{
std::lock_guard<std::mutex> lock(CurrentStatusInfo::locks[static_cast<CurrentStatusInfo::Status>(i)]);
std::string metric_name{CurrentStatusInfo::getName(static_cast<CurrentStatusInfo::Status>(i))};
std::string metric_doc{CurrentStatusInfo::getDocumentation(static_cast<CurrentStatusInfo::Status>(i))};
replaceInvalidChars(metric_name);
std::string key{current_status_prefix + metric_name};
writeOutLine(wb, "# HELP", key, metric_doc);
writeOutLine(wb, "# TYPE", key, "gauge");
for (const auto & value: CurrentStatusInfo::values[i])
{
for (const auto & enum_value: CurrentStatusInfo::getAllPossibleValues(static_cast<CurrentStatusInfo::Status>(i)))
{
DB::writeText(key, wb);
DB::writeChar('{', wb);
DB::writeText(key, wb);
DB::writeChar('=', wb);
writeDoubleQuotedString(enum_value.first, wb);
DB::writeText(",name=", wb);
writeDoubleQuotedString(value.first, wb);
DB::writeText("} ", wb);
DB::writeText(value.second == enum_value.second, wb);
DB::writeChar('\n', wb);
}
}
}
}
}
}