spring-data-redis NoOpCacheStatisticsCollector 源码

2022-08-16
浏览 (487)

spring-data-redis NoOpCacheStatisticsCollector 代码

文件路径：/src/main/java/org/springframework/data/redis/cache/NoOpCacheStatisticsCollector.java

/*
 * Copyright 2020-2022 the original author or authors.
 *
 * Licensed 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
 *
 *      https://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.
 */
package org.springframework.data.redis.cache;

import java.time.Instant;
import java.util.concurrent.TimeUnit;

import org.springframework.util.ObjectUtils;

/**
 * {@link CacheStatisticsCollector} implementation that does not capture anything but throws an
 * {@link IllegalStateException} when {@link #getCacheStatistics(String) obtaining} {@link CacheStatistics} for a cache.
 *
 * @author Christoph Strobl
 * @author Mark Paluch
 * @since 2.4
 */
enum NoOpCacheStatisticsCollector implements CacheStatisticsCollector {

	INSTANCE;

	@Override
	public void incPuts(String cacheName) {}

	@Override
	public void incGets(String cacheName) {}

	@Override
	public void incHits(String cacheName) {}

	@Override
	public void incMisses(String cacheName) {}

	@Override
	public void incDeletesBy(String cacheName, int value) {}

	@Override
	public void incLockTime(String name, long durationNS) {}

	@Override
	public void reset(String cacheName) {}

	@Override
	public CacheStatistics getCacheStatistics(String cacheName) {
		return new EmptyStatistics(cacheName);
	}

	private static class EmptyStatistics implements CacheStatistics {

		private final String cacheName;

		EmptyStatistics(String cacheName) {
			this.cacheName = cacheName;
		}

		@Override
		public String getCacheName() {
			return cacheName;
		}

		@Override
		public long getPuts() {
			return 0;
		}

		@Override
		public long getGets() {
			return 0;
		}

		@Override
		public long getHits() {
			return 0;
		}

		@Override
		public long getMisses() {
			return 0;
		}

		@Override
		public long getDeletes() {
			return 0;
		}

		@Override
		public long getLockWaitDuration(TimeUnit unit) {
			return 0;
		}

		@Override
		public Instant getSince() {
			return Instant.EPOCH;
		}

		@Override
		public Instant getLastReset() {
			return getSince();
		}

		@Override
		public boolean equals(Object o) {

			if (this == o) {
				return true;
			}
			if (o == null || getClass() != o.getClass()) {
				return false;
			}

			EmptyStatistics that = (EmptyStatistics) o;
			return ObjectUtils.nullSafeEquals(cacheName, that.cacheName);
		}

		@Override
		public int hashCode() {
			return ObjectUtils.nullSafeHashCode(cacheName);
		}
	}
}

相关信息

spring-data-redis 源码目录

相关文章

spring-data-redis BatchStrategies 源码

spring-data-redis BatchStrategy 源码

spring-data-redis CacheKeyPrefix 源码

spring-data-redis CacheStatistics 源码

spring-data-redis CacheStatisticsCollector 源码

spring-data-redis CacheStatisticsProvider 源码

spring-data-redis DefaultCacheStatisticsCollector 源码

spring-data-redis DefaultRedisCacheWriter 源码

spring-data-redis MutableCacheStatistics 源码

spring-data-redis RedisCache 源码

0 赞

所属分类： 后端技术
本文标签： Spring Java
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/9fcc007d2d094260ae9a9d25478adf68

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙初识ArkTS语言
6、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...