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#include "metrics_registry.h"
#include <yql/essentials/providers/common/metrics/protos/metrics_registry.pb.h>
#include <util/generic/hash.h>
#include <util/generic/maybe.h>
#include <util/generic/stack.h>
namespace NYql {
namespace {
//////////////////////////////////////////////////////////////////////////////
// TCountersPhotographer
//////////////////////////////////////////////////////////////////////////////
class TCountersPhotographer: public NMonitoring::ICountableConsumer {
public:
TCountersPhotographer(NProto::TCounterGroup* groupProto, bool invalidate)
: HasAnyCounters_(false)
, Invalidate_(invalidate)
{
GroupsProto_.push(groupProto);
}
bool HasAnyCounters() const {
return HasAnyCounters_;
}
private:
void OnCounter(
const TString& labelName, const TString& labelValue,
const TSensorCounter* counter) override
{
HasAnyCounters_ = true;
auto* counterProto = GroupsProto_.top()->AddCounters();
counterProto->SetDerivative(counter->ForDerivative());
auto counterVal = counter->Val();
counterProto->SetValue(counterVal);
if (Invalidate_) {
const_cast<TSensorCounter*>(counter)->Sub(counterVal);
}
auto* label = counterProto->MutableLabel();
label->SetName(labelName);
label->SetValue(labelValue);
}
void OnHistogram(const TString& labelName, const TString& labelValue, NMonitoring::IHistogramSnapshotPtr snapshot, bool) override {
if (Invalidate_) {
return;
}
auto* counterProto = GroupsProto_.top()->AddCounters();
auto* label = counterProto->MutableLabel();
label->SetName(labelName);
label->SetValue(labelValue);
auto bucketsCount = snapshot->Count();
for (ui32 i = 0; i < bucketsCount; i += 1) {
auto upperBound = snapshot->UpperBound(i);
auto value = snapshot->Value(i);
auto* bucket = counterProto->AddBucket();
bucket->SetUpperBound(upperBound);
bucket->SetValue(value);
}
}
void OnGroupBegin(
const TString& labelName, const TString& labelValue,
const TSensorsGroup*) override
{
if (labelName.empty() && labelValue.empty()) {
// root group is alrady present
return;
}
auto* groupProto = GroupsProto_.top()->AddGroups();
auto* label = groupProto->MutableLabel();
label->SetName(labelName);
label->SetValue(labelValue);
GroupsProto_.push(groupProto);
}
void OnGroupEnd(const TString&, const TString&, const TSensorsGroup*) override {
GroupsProto_.pop();
}
private:
TStack<NProto::TCounterGroup*> GroupsProto_;
bool HasAnyCounters_;
bool Invalidate_;
};
//////////////////////////////////////////////////////////////////////////////
// TMetricsRegistryImpl
//////////////////////////////////////////////////////////////////////////////
class TMetricsRegistryImpl final: public IMetricsRegistry {
public:
TMetricsRegistryImpl(
TSensorsGroupPtr sensors,
TMaybe<TString> userName)
: Sensors_(std::move(sensors))
, UserName_(std::move(userName))
{
}
void SetCounter(
const TString& labelName,
const TString& labelValue,
i64 value,
bool derivative) override
{
if (UserName_) {
// per user counter
auto userCnt = GetCounter(labelName, labelValue, UserName_.Get(),
derivative);
if (userCnt) {
*userCnt = value;
}
return;
}
auto totalCnt = GetCounter(labelName, labelValue, nullptr, derivative);
if (totalCnt) {
*totalCnt = value;
}
}
void IncCounter(
const TString& labelName,
const TString& labelValue,
bool derivative) override
{
// total aggregate counter
auto totalCnt = GetCounter(labelName, labelValue, nullptr, derivative);
if (totalCnt) {
totalCnt->Inc();
}
if (UserName_) {
// per user counter
auto userCnt = GetCounter(labelName, labelValue, UserName_.Get(),
derivative);
if (userCnt) {
userCnt->Inc();
}
}
}
void AddCounter(
const TString& labelName,
const TString& labelValue,
i64 value,
bool derivative) override
{
// total aggregate counter
auto totalCnt = GetCounter(labelName, labelValue, nullptr, derivative);
if (totalCnt) {
totalCnt->Add(value);
}
if (UserName_) {
// per user counter
auto userCnt = GetCounter(labelName, labelValue, UserName_.Get(),
derivative);
if (userCnt) {
userCnt->Add(value);
}
}
}
bool TakeSnapshot(NProto::TMetricsRegistrySnapshot* snapshot) const override {
bool hasRootGroupBefore = snapshot->HasRootGroup();
TCountersPhotographer photographer(snapshot->MutableRootGroup(), snapshot->GetDontIncrement() == false);
Sensors_->Accept(TString(), TString(), photographer);
if (!photographer.HasAnyCounters() && !hasRootGroupBefore) {
// remove prematurely allocated group
snapshot->ClearRootGroup();
return false;
}
return true;
}
void MergeSnapshot(const NProto::TMetricsRegistrySnapshot& snapshot) override {
MergeFromGroupProto(
snapshot.HasMergeToRoot()
? GetSensorsRootGroup().Get()
: Sensors_.Get(),
snapshot.GetRootGroup(),
snapshot.HasDontIncrement()
? snapshot.GetDontIncrement()
: false);
}
IMetricsRegistryPtr Personalized(const TString& userName) const override {
return new TMetricsRegistryImpl(Sensors_, MakeMaybe(userName));
}
void Flush() override {
// do nothing
}
TSensorsGroupPtr GetSensors() override {
return Sensors_.Get();
}
private:
TSensorCounterPtr GetCounter(
const TString& labelName,
const TString& labelValue,
const TString* userName,
bool derivative)
{
static const TString USER("user");
static const TString USER_ABSOLUTE("user_absolute");
static const TString TOTAL("total");
const TString& userGroup = derivative ? USER : USER_ABSOLUTE;
return Sensors_
->GetSubgroup(userGroup, userName ? *userName : TOTAL)
->GetNamedCounter(labelName, labelValue, derivative);
}
void MergeFromGroupProto(
TSensorsGroup* group, const NProto::TCounterGroup& groupProto, bool asIs)
{
for (const auto& counterProto: groupProto.GetCounters()) {
const auto& label = counterProto.GetLabel();
if (!counterProto.GetBucket().empty()) {
NMonitoring::TBucketBounds bounds;
auto histSnapshot = NMonitoring::TExplicitHistogramSnapshot::New(counterProto.GetBucket().size());
bounds.reserve(counterProto.GetBucket().size());
int i = 0;
for (const auto& b : counterProto.GetBucket()) {
if (i < counterProto.GetBucket().size() - 1) {
// skip inf
bounds.push_back(b.GetUpperBound());
}
(*histSnapshot)[i].first = b.GetUpperBound();
(*histSnapshot)[i].second = b.GetValue();
i += 1;
}
auto collector = NMonitoring::ExplicitHistogram(bounds).Release();
auto histogram = group->GetNamedHistogram(
label.GetName(), label.GetValue(),
THolder(collector));
Histograms.insert(std::make_pair(histogram, collector));
Histograms[histogram]->Collect(*histSnapshot);
} else {
auto counter = group->GetNamedCounter(
label.GetName(), label.GetValue(),
counterProto.GetDerivative());
if (asIs) {
*counter = counterProto.GetValue();
} else {
*counter += counterProto.GetValue();
}
}
}
for (const auto& subGroupProto: groupProto.GetGroups()) {
const auto& label = subGroupProto.GetLabel();
auto subGroup = group->GetSubgroup(
label.GetName(), label.GetValue());
MergeFromGroupProto(subGroup.Get(), subGroupProto, asIs);
}
}
private:
TSensorsGroupPtr Sensors_;
const TMaybe<TString> UserName_;
THashMap<NMonitoring::THistogramPtr, NMonitoring::IHistogramCollector*> Histograms;
};
} // namespace
IMetricsRegistryPtr CreateMetricsRegistry(TSensorsGroupPtr sensors) {
return new TMetricsRegistryImpl(std::move(sensors), Nothing());
}
} // namespace NYql
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