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#include "page.h"
#include "encode.h"
#include <library/cpp/monlib/service/pages/templates.h>
#include <library/cpp/string_utils/quote/quote.h>
#include <util/string/split.h>
#include <util/system/tls.h>
using namespace NMonitoring;
namespace {
Y_POD_STATIC_THREAD(TDynamicCounters*)
currentCounters(nullptr);
}
TMaybe<EFormat> ParseFormat(TStringBuf str) {
if (str == TStringBuf("json")) {
return EFormat::JSON;
} else if (str == TStringBuf("spack")) {
return EFormat::SPACK;
} else if (str == TStringBuf("prometheus")) {
return EFormat::PROMETHEUS;
} else {
return Nothing();
}
}
void TDynamicCountersPage::Output(NMonitoring::IMonHttpRequest& request) {
if (OutputCallback) {
OutputCallback();
}
TCountableBase::EVisibility visibility{
TCountableBase::EVisibility::Public
};
TVector<TStringBuf> parts;
StringSplitter(request.GetPathInfo())
.Split('/')
.SkipEmpty()
.Collect(&parts);
TMaybe<EFormat> format = !parts.empty() ? ParseFormat(parts.back()) : Nothing();
if (format) {
parts.pop_back();
}
if (!parts.empty() && parts.back() == TStringBuf("private")) {
visibility = TCountableBase::EVisibility::Private;
parts.pop_back();
}
auto counters = Counters;
for (const auto& escaped : parts) {
const auto part = CGIUnescapeRet(escaped);
TVector<TString> labels;
StringSplitter(part).Split('=').SkipEmpty().Collect(&labels);
if (labels.size() != 2U)
return NotFound(request);
if (const auto child = counters->FindSubgroup(
labels.front(),
labels.back())) {
counters = child;
} else {
return HandleAbsentSubgroup(request);
}
}
if (!format) {
currentCounters = counters.Get();
THtmlMonPage::Output(request);
currentCounters = nullptr;
return;
}
IOutputStream& out = request.Output();
if (*format == EFormat::JSON) {
out << HTTPOKJSON;
} else if (*format == EFormat::SPACK) {
out << HTTPOKSPACK;
} else if (*format == EFormat::PROMETHEUS) {
out << HTTPOKPROMETHEUS;
} else {
ythrow yexception() << "unsupported metric encoding format: " << *format;
}
auto encoder = CreateEncoder(&out, *format, visibility);
counters->Accept(TString(), TString(), *encoder);
out.Flush();
}
void TDynamicCountersPage::HandleAbsentSubgroup(IMonHttpRequest& request) {
if (UnknownGroupPolicy == EUnknownGroupPolicy::Error) {
NotFound(request);
} else if (UnknownGroupPolicy == EUnknownGroupPolicy::Ignore) {
NoContent(request);
} else {
Y_FAIL("Unsupported policy set");
}
}
void TDynamicCountersPage::BeforePre(IMonHttpRequest& request) {
IOutputStream& out = request.Output();
HTML(out) {
DIV() {
out << "<a href='" << request.GetPath() << "/json'>Counters as JSON</a>";
out << " for <a href='https://wiki.yandex-team.ru/solomon/'>Solomon</a>";
}
H5() {
out << "Counters subgroups";
}
UL() {
currentCounters->EnumerateSubgroups([&](const TString& name, const TString& value) {
LI() {
TString pathPart = name + "=" + value;
Quote(pathPart, "");
out << "\n<a href='" << request.GetPath() << "/" << pathPart << "'>" << name << " " << value << "</a>";
}
});
}
H4() {
out << "Counters as text";
}
}
}
void TDynamicCountersPage::OutputText(IOutputStream& out, IMonHttpRequest&) {
currentCounters->OutputPlainText(out);
}
void TDynamicCountersPage::SetUnknownGroupPolicy(EUnknownGroupPolicy value) {
UnknownGroupPolicy = value;
}
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