publish spring event named ConfigChangeSpringEvent when the configuration is changed (#652)
DerekYRC
2 years ago
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GitHub
parent
9d94b587e8
commit
979ddaf009
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/*
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* Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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*
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* Licensed under the BSD 3-Clause License (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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* https://opensource.org/licenses/BSD-3-Clause
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*
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* Unless required by applicable law or agreed to in writing, software distributed
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*
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*/
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package com.tencent.cloud.polaris.config.spring.event;
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import java.util.Map;
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import java.util.Set;
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import com.tencent.polaris.configuration.api.core.ConfigPropertyChangeInfo;
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import org.springframework.context.ApplicationEvent;
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/**
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* A spring change event when config is changed.
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*
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* @author Derek Yi 2022-10-16
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*/
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public class ConfigChangeSpringEvent extends ApplicationEvent {
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/**
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* @param source all changed keys map.
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*/
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public ConfigChangeSpringEvent(Map<String, ConfigPropertyChangeInfo> source) {
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super(source);
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}
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/**
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* Get the changed keys.
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* @return the list of the keys
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*/
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public Set<String> changedKeys() {
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return changeMap().keySet();
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}
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/**
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* Get a specific change instance for the key specified.
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* @param key the changed key
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* @return the change instance
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*/
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public ConfigPropertyChangeInfo getChange(String key) {
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return changeMap().get(key);
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}
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/**
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* Check whether the specified key is changed .
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* @param key the key
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* @return true if the key is changed, false otherwise.
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*/
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public boolean isChanged(String key) {
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return changeMap().containsKey(key);
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}
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private Map<String, ConfigPropertyChangeInfo> changeMap() {
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return (Map<String, ConfigPropertyChangeInfo>) getSource();
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}
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}
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@ -0,0 +1,80 @@
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/*
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* Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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*
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* Licensed under the BSD 3-Clause License (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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* https://opensource.org/licenses/BSD-3-Clause
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*
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* Unless required by applicable law or agreed to in writing, software distributed
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*
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*/
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package com.tencent.cloud.polaris.config.spring.event;
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import java.util.HashMap;
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import java.util.Set;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicInteger;
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import com.tencent.polaris.configuration.api.core.ChangeType;
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import com.tencent.polaris.configuration.api.core.ConfigPropertyChangeInfo;
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import org.junit.Assert;
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import org.junit.Test;
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import org.springframework.boot.autoconfigure.AutoConfigurations;
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import org.springframework.boot.test.context.runner.ApplicationContextRunner;
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import org.springframework.context.ApplicationListener;
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import org.springframework.context.annotation.Configuration;
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/**
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* Test for {@link ConfigChangeSpringEvent}.
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*
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* @author derek.yi 2022-10-16
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*/
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public class ConfigChangeSpringEventTest {
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private static CountDownLatch countDownLatch = new CountDownLatch(1);
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private static AtomicInteger receiveEventTimes = new AtomicInteger();
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@Test
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public void testPublishConfigChangeSpringEvent() {
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ApplicationContextRunner contextRunner = new ApplicationContextRunner()
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.withConfiguration(AutoConfigurations.of(ConfigChangeSpringEventListener.class));
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contextRunner.run(context -> {
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HashMap<String, ConfigPropertyChangeInfo> changeMap = new HashMap<>();
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changeMap.put("key", new ConfigPropertyChangeInfo("key", null, "value", ChangeType.ADDED));
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context.publishEvent(new ConfigChangeSpringEvent(changeMap));
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countDownLatch.await(5, TimeUnit.SECONDS);
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Assert.assertEquals(1, receiveEventTimes.get());
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});
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}
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@Configuration
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static class ConfigChangeSpringEventListener implements ApplicationListener<ConfigChangeSpringEvent> {
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@Override
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public void onApplicationEvent(ConfigChangeSpringEvent event) {
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Set<String> changedKeys = event.changedKeys();
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Assert.assertEquals(1, changedKeys.size());
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Assert.assertTrue(event.isChanged("key"));
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ConfigPropertyChangeInfo changeInfo = event.getChange("key");
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Assert.assertNotNull(changeInfo);
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Assert.assertEquals("key", changeInfo.getPropertyName());
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Assert.assertEquals("value", changeInfo.getNewValue());
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Assert.assertEquals(ChangeType.ADDED, changeInfo.getChangeType());
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receiveEventTimes.incrementAndGet();
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countDownLatch.countDown();
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}
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}
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}
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