114 lines
3.6 KiB
C++
114 lines
3.6 KiB
C++
/*
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* ConfigKnobs.h
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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 2013-2018 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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#pragma once
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#include <string>
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#include "fdbclient/FDBTypes.h"
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struct ConfigKeyRef {
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// Empty config class means the update is global
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Optional<KeyRef> configClass;
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KeyRef knobName;
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ConfigKeyRef() = default;
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explicit ConfigKeyRef(Optional<KeyRef> configClass, KeyRef knobName)
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: configClass(configClass), knobName(knobName) {}
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explicit ConfigKeyRef(Arena& arena, Optional<KeyRef> configClass, KeyRef knobName)
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: configClass(arena, configClass), knobName(arena, knobName) {}
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explicit ConfigKeyRef(Arena& arena, ConfigKeyRef const& rhs) : ConfigKeyRef(arena, rhs.configClass, rhs.knobName) {}
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static Standalone<ConfigKeyRef> decodeKey(KeyRef const&);
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template <class Ar>
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void serialize(Ar& ar) {
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serializer(ar, configClass, knobName);
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}
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bool operator==(ConfigKeyRef const& rhs) const {
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return (configClass == rhs.configClass) && (knobName == rhs.knobName);
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}
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bool operator!=(ConfigKeyRef const& rhs) const { return !(*this == rhs); }
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size_t expectedSize() const { return configClass.expectedSize() + knobName.expectedSize(); }
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};
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using ConfigKey = Standalone<ConfigKeyRef>;
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inline bool operator<(ConfigKeyRef const& lhs, ConfigKeyRef const& rhs) {
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if (lhs.configClass != rhs.configClass) {
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return lhs.configClass < rhs.configClass;
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} else {
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return lhs.knobName < rhs.knobName;
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}
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}
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class ConfigMutationRef {
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ConfigKeyRef key;
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Optional<ValueRef> value;
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public:
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ConfigMutationRef() = default;
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ConfigMutationRef(ConfigKeyRef key, Optional<ValueRef> value) : key(key), value(value) {}
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ConfigKeyRef getKey() const { return key; }
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Optional<KeyRef> getConfigClass() const { return key.configClass; }
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KeyRef getKnobName() const { return key.knobName; }
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Optional<ValueRef> getValue() const { return value; }
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ConfigMutationRef(Arena& arena, ConfigMutationRef const& rhs) : key(arena, rhs.key), value(arena, rhs.value) {}
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bool isSet() const { return value.present(); }
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static Standalone<ConfigMutationRef> createConfigMutation(KeyRef encodedKey, Optional<ValueRef> value) {
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auto key = ConfigKeyRef::decodeKey(encodedKey);
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return ConfigMutationRef(key, value);
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}
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template <class Ar>
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void serialize(Ar& ar) {
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serializer(ar, key, value);
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}
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size_t expectedSize() const { return key.expectedSize() + value.expectedSize(); }
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};
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using ConfigMutation = Standalone<ConfigMutationRef>;
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struct ConfigCommitAnnotationRef {
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KeyRef description;
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double timestamp{ 0.0 };
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ConfigCommitAnnotationRef() = default;
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explicit ConfigCommitAnnotationRef(KeyRef description, double timestamp)
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: description(description), timestamp(timestamp) {}
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explicit ConfigCommitAnnotationRef(Arena& arena, ConfigCommitAnnotationRef& rhs)
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: description(arena, rhs.description), timestamp(rhs.timestamp) {}
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size_t expectedSize() const { return description.expectedSize(); }
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template <class Ar>
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void serialize(Ar& ar) {
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serializer(ar, timestamp, description);
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}
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};
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using ConfigCommitAnnotation = Standalone<ConfigCommitAnnotationRef>;
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