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
|
#include "logger.h"
#include <library/cpp/unified_agent_client/clock.h>
#include <library/cpp/unified_agent_client/helpers.h>
#include <library/cpp/logger/log.h>
#include <util/datetime/base.h>
#include <util/stream/str.h>
#include <util/system/getpid.h>
#include <util/system/thread.h>
namespace NUnifiedAgent {
namespace {
TString FormatLogLine(ELogPriority logLevel, const TStringBuf message, const TString& scope) {
TString result;
{
TStringOutput output(result);
output << FormatIsoLocal(TClock::Now())
<< " " << GetPID()
<< " " << TThread::CurrentThreadId()
<< " " << logLevel;
if (!scope.Empty()) {
output << " " << scope;
}
output << " " << message << "\n";
}
return result;
}
}
TLogger::TThrottlerWithLock::TThrottlerWithLock(size_t rateLimitBytes)
: Throttler(rateLimitBytes, rateLimitBytes / 2)
, Lock()
{
}
bool TLogger::TThrottlerWithLock::TryConsume(double tokens) {
with_lock(Lock) {
return Throttler.TryConsume(tokens);
}
}
TLogger::TLogger(TLog& log, TFMaybe<size_t> rateLimitBytes)
: DefaultLogContext{log, log.IsNullLog() ? ELogPriority::TLOG_EMERG : log.FiltrationLevel()}
, TracingLogContexts()
, CurrentLogContext_()
, Errors(nullptr)
, DroppedBytes(nullptr)
, Throttler(rateLimitBytes.Defined() ? MakeHolder<TThrottlerWithLock>(*rateLimitBytes) : nullptr)
, Lock()
{
SetCurrentLogContext(DefaultLogContext);
}
void TLogger::SetCurrentLogContext(TLogContext& logContext) {
CurrentLogContext_.store(logContext.Log.IsNullLog() ? nullptr : &logContext, std::memory_order_release);
}
void TLogger::Log(TLog& log, ELogPriority logPriority, const TStringBuf message, const TString& scope) const {
try {
const auto logLine = FormatLogLine(logPriority, NUnifiedAgent::NPrivate::ReplaceNonUTF(message).Data, scope);
if (Throttler && &log == &DefaultLogContext.Log && !Throttler->TryConsume(logLine.size())) {
if (DroppedBytes) {
DroppedBytes->Add(logLine.size());
}
return;
}
log.Write(logPriority, logLine);
} catch (...) {
}
}
void TLogger::StartTracing(ELogPriority logPriority) noexcept {
with_lock(Lock) {
auto& logContext = GetOrCreateTracingLogContext(logPriority);
SetTracing(logContext, "started");
}
}
void TLogger::FinishTracing() noexcept {
with_lock(Lock) {
SetTracing(DefaultLogContext, "finished");
}
}
void TLogger::SetTracing(TLogContext& logContext, const char* action) {
// Lock must be held
SetCurrentLogContext(logContext);
Log(logContext.Log,
TLOG_INFO,
Sprintf("tracing %s, log priority is set to [%s]",
action, ToString(logContext.Priority).c_str()),
"");
}
auto TLogger::GetOrCreateTracingLogContext(ELogPriority logPriority) -> TLogContext& {
// Lock must be held
for (const auto& c: TracingLogContexts) {
if (c->Priority == logPriority) {
return *c;
}
}
auto newLogContext = MakeHolder<TLogContext>();
newLogContext->Log = TLog("cerr", logPriority);
newLogContext->Priority = logPriority;
auto* result = newLogContext.Get();
TracingLogContexts.push_back(std::move(newLogContext));
return *result;
}
TScopeLogger::TScopeLogger()
: Logger(nullptr)
, Scope()
, Errors(nullptr)
{
}
TScopeLogger::TScopeLogger(TLogger* logger,
const TString& scope,
NMonitoring::TDeprecatedCounter* errors)
: Logger(logger)
, Scope(scope)
, Errors(errors)
{
}
}
|
