| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #ifndef GEODE_STATISTICS_STATISTICDESCRIPTOR_H_ |
| #define GEODE_STATISTICS_STATISTICDESCRIPTOR_H_ |
| |
| #include <string> |
| |
| #include <geode/internal/geode_globals.hpp> |
| |
| /** @file |
| */ |
| |
| namespace apache { |
| namespace geode { |
| namespace statistics { |
| |
| /** |
| * Describes an individual statistic whose value is updated by an |
| * application and may be archived by Geode. These descriptions are |
| * gathered together in a {@link StatisticsType}. |
| * |
| * <P> |
| * To get an instance of this interface use an instance of |
| * {@link StatisticsFactory}. |
| * <P> |
| * StatisticDescriptors are naturally ordered by their name. |
| * |
| */ |
| |
| class APACHE_GEODE_EXPORT StatisticDescriptor { |
| public: |
| /** |
| * Returns the id of this statistic in a {@link StatisticsType |
| * }. The id is initialized when its statistics |
| * type is created. |
| */ |
| virtual int32_t getId() const = 0; |
| |
| /** |
| * Returns the name of this statistic |
| */ |
| virtual const std::string& getName() const = 0; |
| |
| /** |
| * Returns a description of this statistic |
| */ |
| virtual const std::string& getDescription() const = 0; |
| |
| /** |
| * Returns true if this statistic is a counter; false if its a gauge. |
| * Counter statistics have values that always increase. |
| * Gauge statistics have unconstrained values. |
| */ |
| virtual bool isCounter() const = 0; |
| |
| /** |
| * Returns true if a larger statistic value indicates better performance. |
| */ |
| virtual bool isLargerBetter() const = 0; |
| |
| /** |
| * Returns the unit in which this statistic is measured |
| */ |
| virtual const std::string& getUnit() const = 0; |
| |
| /* |
| * Destructor |
| */ |
| virtual ~StatisticDescriptor() {} |
| |
| }; // class |
| } // namespace statistics |
| } // namespace geode |
| } // namespace apache |
| |
| #endif // GEODE_STATISTICS_STATISTICDESCRIPTOR_H_ |