97 lines
3.0 KiB
C++
97 lines
3.0 KiB
C++
/*
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* KnobValue.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2026 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "fdbclient/KnobValue.h"
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#include "fdbclient/Tuple.h"
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#include "flow/flow.h"
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namespace {
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class SetKnobFunc {
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Knobs* knobs;
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std::string const* knobName;
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public:
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SetKnobFunc(Knobs& knobs, std::string const& knobName) : knobs(&knobs), knobName(&knobName) {}
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template <class T>
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bool operator()(T const& v) const {
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return knobs->setKnob(*knobName, v);
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}
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bool operator()(StringRef const& v) const { return knobs->setKnob(*knobName, v.toString()); }
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};
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struct ToStringFunc {
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std::string operator()(int v) const { return format("int:%d", v); }
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std::string operator()(int64_t v) const { return format("int64_t:%lld", v); }
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std::string operator()(bool v) const { return format("bool:%d", v); }
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std::string operator()(ValueRef v) const { return "string:" + v.toString(); }
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std::string operator()(double v) const { return format("double:%lf", v); }
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};
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} // namespace
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Value KnobValueRef::ToValueFunc::operator()(int v) const {
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return Tuple::makeTuple(v).pack();
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}
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Value KnobValueRef::ToValueFunc::operator()(int64_t v) const {
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return Tuple::makeTuple(v).pack();
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}
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Value KnobValueRef::ToValueFunc::operator()(bool v) const {
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return Tuple::makeTuple(v).pack();
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}
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Value KnobValueRef::ToValueFunc::operator()(ValueRef v) const {
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return Tuple::makeTuple(v).pack();
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}
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Value KnobValueRef::ToValueFunc::operator()(double v) const {
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return Tuple::makeTuple(v).pack();
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}
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KnobValue KnobValueRef::CreatorFunc::operator()(NoKnobFound) const {
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ASSERT(false);
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return {};
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}
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KnobValue KnobValueRef::CreatorFunc::operator()(int v) const {
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return KnobValueRef(v);
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}
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KnobValue KnobValueRef::CreatorFunc::operator()(double v) const {
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return KnobValueRef(v);
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}
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KnobValue KnobValueRef::CreatorFunc::operator()(int64_t v) const {
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return KnobValueRef(v);
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}
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KnobValue KnobValueRef::CreatorFunc::operator()(bool v) const {
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return KnobValueRef(v);
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}
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KnobValue KnobValueRef::CreatorFunc::operator()(std::string const& v) const {
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return KnobValueRef(ValueRef(reinterpret_cast<uint8_t const*>(v.c_str()), v.size()));
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}
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KnobValue KnobValueRef::create(ParsedKnobValue const& v) {
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return std::visit(CreatorFunc{}, v);
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}
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bool KnobValueRef::visitSetKnob(std::string const& knobName, Knobs& knobs) const {
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return std::visit(SetKnobFunc{ knobs, knobName }, value);
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}
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std::string KnobValueRef::toString() const {
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return std::visit(ToStringFunc{}, value);
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}
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