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#pragma once
#include <library/cpp/containers/sorted_vector/sorted_vector.h>
#include <util/generic/string.h>
#include <util/generic/strbuf.h>
#include <util/generic/maybe.h>
#include <util/generic/yexception.h>
namespace NYql {
namespace NCommon {
const TString ALL_CLUSTERS = "$all";
template <typename TType, bool RUNTIME = true>
class TConfSetting {
public:
TConfSetting() = default;
TConfSetting(const TType& value) {
PerClusterValue[ALL_CLUSTERS] = value;
}
TConfSetting(const TConfSetting&) = default;
TConfSetting(TConfSetting&&) = default;
~TConfSetting() = default;
bool IsRuntime() const {
return RUNTIME;
}
TType& operator[](const TString& cluster) {
if (ALL_CLUSTERS == cluster) {
PerClusterValue.clear();
}
return PerClusterValue[cluster];
}
TConfSetting& operator =(const TType& value) {
PerClusterValue.clear();
PerClusterValue[ALL_CLUSTERS] = value;
return *this;
}
TConfSetting& operator =(const TConfSetting&) = default;
TConfSetting& operator =(TConfSetting&&) = default;
template <typename TFunc>
void UpdateAll(TFunc func) {
PerClusterValue[ALL_CLUSTERS]; // insert record for all clusters if it is not present
for (auto& it: PerClusterValue) {
func(it.first, it.second);
}
}
TMaybe<TType> Get(const TString& cluster) const {
if (!PerClusterValue.empty()) {
auto it = PerClusterValue.find(cluster);
if (it != PerClusterValue.end()) {
return MakeMaybe(it->second);
}
it = PerClusterValue.find(ALL_CLUSTERS);
if (it != PerClusterValue.end()) {
return MakeMaybe(it->second);
}
}
return Nothing();
}
void Clear() {
PerClusterValue.clear();
}
void Clear(const TString& cluster) {
if (ALL_CLUSTERS == cluster) {
PerClusterValue.clear();
} else {
PerClusterValue.erase(cluster);
}
}
private:
NSorted::TSimpleMap<TString, TType> PerClusterValue; // Uses special '$all' key for all clusters
};
template <typename TType>
class TConfSetting<TType, false> {
public:
TConfSetting() = default;
TConfSetting(const TType& value)
: Value(value)
{
}
TConfSetting(const TConfSetting&) = default;
TConfSetting(TConfSetting&&) = default;
~TConfSetting() = default;
bool IsRuntime() const {
return false;
}
TType& operator[](const TString& cluster) {
if (cluster != ALL_CLUSTERS) {
ythrow yexception() << "Static setting cannot be set for specific cluster";
}
Value.ConstructInPlace();
return Value.GetRef();
}
TConfSetting& operator =(const TType& value) {
Value = value;
return *this;
}
TConfSetting& operator =(const TConfSetting&) = default;
TConfSetting& operator =(TConfSetting&&) = default;
TMaybe<TType> Get() const {
return Value;
}
void Clear() {
Value.Clear();
}
void Clear(const TString&) {
Value.Clear();
}
private:
TMaybe<TType> Value;
};
} // namespace NCommon
} // namespace NYql
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