mirror of https://github.com/longtai-cn/hippo4j
Optimized alarm notification capabilities (#435)
小马哥
3 years ago
committed by
GitHub
parent
d42ee68be4
commit
89fcf99fa9
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. 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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package cn.hippo4j.common.toolkit;
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import lombok.AccessLevel;
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import lombok.NoArgsConstructor;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.function.Supplier;
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/**
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* Singleton object container.
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*/
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@NoArgsConstructor(access = AccessLevel.PRIVATE)
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public final class Singleton {
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private static final ConcurrentHashMap<String, Object> SINGLE_OBJECT_POOL = new ConcurrentHashMap();
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/**
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* Get a singleton object by key.
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*
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* @param key
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* @param <T>
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* @return
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*/
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public static <T> T get(String key) {
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Object result = SINGLE_OBJECT_POOL.get(key);
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return result == null ? null : (T) result;
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}
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/**
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* Get a singleton object by key.
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*
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* <p> When empty, build a singleton object through supplier and put it into the container.
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*
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* @param key
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* @param supplier
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* @param <T>
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* @return
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*/
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public static <T> T get(String key, Supplier<T> supplier) {
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Object result = SINGLE_OBJECT_POOL.get(key);
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if (result == null && (result = supplier.get()) != null) {
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SINGLE_OBJECT_POOL.put(key, result);
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}
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return result != null ? (T) result : null;
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}
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/**
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* Object into container.
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*
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* @param value
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*/
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public static void put(Object value) {
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put(value.getClass().getName(), value);
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}
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/**
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* Object into container.
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*
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* @param key
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* @param value
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*/
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public static void put(String key, Object value) {
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SINGLE_OBJECT_POOL.put(key, value);
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}
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}
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{
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"fields": [
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{
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"is_short": true,
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"text": {
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"content": "** 任务执行时间：** %s",
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"tag": "lark_md"
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}
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},
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{
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"is_short": true,
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"text": {
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"content": "** 超时时间：** %s",
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"tag": "lark_md"
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}
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},
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{
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"is_short": true,
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"text": {
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"content": "** 链路信息：** %s",
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"tag": "lark_md"
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}
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}
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],
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"tag": "div"
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},
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{
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"tag": "hr"
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},
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{
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"is_short": true,
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"text": {
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"content": "** 链路信息：** %s",
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"tag": "lark_md"
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}
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}
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