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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/builder.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();
}
}
namespace {
TStringBuf GetParams(NMonitoring::IMonHttpRequest& request) {
TStringBuf uri = request.GetUri();
TStringBuf params = uri.After('?');
if (params.Size() == uri.Size()) {
params.Clear();
}
return params;
}
}
void TDynamicCountersPage::Output(NMonitoring::IMonHttpRequest& request) {
if (OutputCallback) {
OutputCallback();
}
TString nameLabel("sensor");
TCountableBase::EVisibility visibility{
TCountableBase::EVisibility::Public
};
TVector<TStringBuf> parts;
TMaybe<EFormat> format;
TStringBuf params = GetParams(request);
if (request.GetPathInfo().empty() && !params.empty()) {
StringSplitter(params).Split('&').SkipEmpty().Consume([&](TStringBuf part) {
TStringBuf name;
TStringBuf value;
part.Split('=', name, value);
if (name.StartsWith("@")) {
if (name == "@format") {
format = ParseFormat(value);
} else if (name == "@name_label") {
nameLabel = value;
} else if (name == "@private") {
visibility = TCountableBase::EVisibility::Private;
}
} else {
parts.push_back(part);
}
return true;
});
} else {
StringSplitter(request.GetPathInfo())
.Split('/')
.SkipEmpty()
.Collect(&parts);
format = !parts.empty() ? ParseFormat(parts.back()) : Nothing();
if (format) {
parts.pop_back();
}
if (!parts.empty() && parts.back().StartsWith(TStringBuf("name_label="))) {
TVector<TString> labels;
StringSplitter(parts.back()).Split('=').SkipEmpty().Collect(&labels);
if (labels.size() == 2U) {
nameLabel = labels.back();
}
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, nameLabel, visibility);
counters->Accept(TString(), TString(), *encoder);
out.Flush();
}
THolder<ICountableConsumer> TDynamicCountersPage::CreateEncoder(IOutputStream* out, EFormat format, TStringBuf nameLabel, TCountableBase::EVisibility visibility) const {
return ::CreateEncoder(out, format, nameLabel, visibility);
}
void TDynamicCountersPage::HandleAbsentSubgroup(IMonHttpRequest& request) {
if (UnknownGroupPolicy == EUnknownGroupPolicy::Error) {
NotFound(request);
} else if (UnknownGroupPolicy == EUnknownGroupPolicy::Ignore) {
NoContent(request);
} else {
Y_ABORT("Unsupported policy set");
}
}
void TDynamicCountersPage::BeforePre(IMonHttpRequest& request) {
IOutputStream& out = request.Output();
TStringBuf params = GetParams(request);
TStringBuilder base;
base << Path << '?';
if (!params.empty()) {
base << params << '&';
}
HTML(out) {
DIV() {
out << "<a href='" << base << "@format=json'>Counters as JSON</a>";
out << " for Solomon";
}
TAG(TH5) {
out << "Counters subgroups";
}
UL() {
currentCounters->EnumerateSubgroups([&](const TString& name, const TString& value) {
LI() {
auto escName = name;
auto escValue = value;
Quote(escName);
Quote(escValue);
out << "\n<a href='" << base << escName << '=' << escValue << "'>" << name << " " << value << "</a>";
}
});
}
TAG(TH4) {
out << "Counters as text";
}
}
}
void TDynamicCountersPage::OutputText(IOutputStream& out, IMonHttpRequest&) {
currentCounters->OutputPlainText(out);
}
void TDynamicCountersPage::SetUnknownGroupPolicy(EUnknownGroupPolicy value) {
UnknownGroupPolicy = value;
}
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