content: /*
   * Copyright 1999-2023 Alibaba Group Holding Ltd.
   *
   * 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
   *
   *      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.
   */
  
  package com.alibaba.nacos.config.server.service;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.common.utils.CollectionUtils;
  import com.alibaba.nacos.common.utils.FuzzyGroupKeyPattern;
  import com.alibaba.nacos.config.server.configuration.ConfigCommonConfig;
  import com.alibaba.nacos.config.server.utils.GroupKey;
  import com.alibaba.nacos.sys.env.EnvUtil;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.MockedStatic;
  import org.mockito.Mockito;
  import org.springframework.test.context.junit.jupiter.SpringExtension;
  
  import java.util.Set;
  
  import static com.alibaba.nacos.api.common.Constants.ConfigChangedType.ADD_CONFIG;
  import static com.alibaba.nacos.api.common.Constants.ConfigChangedType.DELETE_CONFIG;
  import static com.alibaba.nacos.api.model.v2.ErrorCode.FUZZY_WATCH_PATTERN_OVER_LIMIT;
  import static org.mockito.ArgumentMatchers.anyString;
  import static org.mockito.ArgumentMatchers.eq;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(SpringExtension.class)
  public class ConfigFuzzyWatchContextServiceTest {
      
      MockedStatic<EnvUtil> envUtilMockedStatic;
      
      MockedStatic<ConfigCommonConfig> configCommonConfigMockedStatic;
      
      private static int mocMaxPattern = 5;
      
      private static int mocMaxPatternConfigCount = 10;
      
      /**
       * before.
       */
      @BeforeEach
      public void before() {
          envUtilMockedStatic = Mockito.mockStatic(EnvUtil.class);
          envUtilMockedStatic.when(() -> EnvUtil.getProperty(eq("nacos.config.cache.type"), anyString()))
                  .thenReturn("nacos");
          
          configCommonConfigMockedStatic = Mockito.mockStatic(ConfigCommonConfig.class);
          
          ConfigCommonConfig configCommonConfig = Mockito.mock(ConfigCommonConfig.class);
          when(configCommonConfig.getMaxPatternCount()).thenReturn(mocMaxPattern);
          when(configCommonConfig.getMaxMatchedConfigCount()).thenReturn(mocMaxPatternConfigCount);
          
          configCommonConfigMockedStatic.when(() -> ConfigCommonConfig.getInstance()).thenReturn(configCommonConfig);
      }
      
      @AfterEach
      public void after() {
          envUtilMockedStatic.close();
          configCommonConfigMockedStatic.close();
      }
      
      @Test
      public void testTrimFuzzyWatchContext() throws NacosException {
          
          ConfigFuzzyWatchContextService configFuzzyWatchContextService = new ConfigFuzzyWatchContextService();
          String groupKey = GroupKey.getKeyTenant("data124", "group", "12345");
          //init
          String collectionId = "id";
          String groupKeyPattern = FuzzyGroupKeyPattern.generatePattern("data*", "group", "12345");
          
          configFuzzyWatchContextService.addFuzzyWatch(groupKeyPattern, collectionId);
          configFuzzyWatchContextService.syncGroupKeyContext(groupKey, ADD_CONFIG);
          
          //test
          Set<String> matchedClients = configFuzzyWatchContextService.getMatchedClients(groupKey);
          Assertions.assertTrue(matchedClients.size() == 1);
          
          Set<String> notMatchedClients = configFuzzyWatchContextService.getMatchedClients(
                  GroupKey.getKeyTenant("da124", "group", "12345"));
          Assertions.assertTrue(notMatchedClients.size() == 0);
          
          Set<String> matchedGroupKeys = configFuzzyWatchContextService.matchGroupKeys(groupKeyPattern);
          
          Assertions.assertTrue(matchedGroupKeys.size() > 0);
          Assertions.assertTrue(matchedGroupKeys.contains(groupKey));
          
          // remove connection is watch
          configFuzzyWatchContextService.clearFuzzyWatchContext(collectionId);
          
          //trim once,  matchedClients2 is empty,matchedGroupKeys2 is not empty
          configFuzzyWatchContextService.trimFuzzyWatchContext();
          Set<String> matchedClients2 = configFuzzyWatchContextService.getMatchedClients(groupKey);
          Assertions.assertTrue(matchedClients2 != null && matchedClients2.isEmpty());
          
          Set<String> matchedGroupKeys2 = configFuzzyWatchContextService.matchGroupKeys(groupKeyPattern);
          Assertions.assertTrue(matchedGroupKeys2 != null && matchedGroupKeys2.contains(groupKey));
          
          //trim twice, matchedGroupKeys2 is  empty
          configFuzzyWatchContextService.trimFuzzyWatchContext();
          Set<String> matchedGroupKeys3 = configFuzzyWatchContextService.matchGroupKeys(groupKeyPattern);
          Assertions.assertTrue(matchedGroupKeys3.isEmpty());
      }
      
      @Test
      public void testSyncGroupKeyContext() throws NacosException {
          ConfigFuzzyWatchContextService configFuzzyWatchContextService = new ConfigFuzzyWatchContextService();
          
          //init
          String collectionId = "id";
          String groupKeyPattern = FuzzyGroupKeyPattern.generatePattern("data*", "group", "12345");
          configFuzzyWatchContextService.addFuzzyWatch(groupKeyPattern, collectionId);
          String keyTenant = GroupKey.getKeyTenant("data1245", "group", "12345");
          boolean needNotify1 = configFuzzyWatchContextService.syncGroupKeyContext(keyTenant, ADD_CONFIG);
          Assertions.assertTrue(needNotify1);
          boolean needNotify2 = configFuzzyWatchContextService.syncGroupKeyContext(keyTenant, ADD_CONFIG);
          Assertions.assertFalse(needNotify2);
          
          boolean needNotify3 = configFuzzyWatchContextService.syncGroupKeyContext(keyTenant, DELETE_CONFIG);
          Assertions.assertTrue(needNotify3);
          
          boolean needNotify4 = configFuzzyWatchContextService.syncGroupKeyContext(keyTenant, DELETE_CONFIG);
          Assertions.assertFalse(needNotify4);
          
      }
      
      @Test
      public void testMakeupGroupKeyContext() throws NacosException {
          
          ConfigFuzzyWatchContextService configFuzzyWatchContextService = new ConfigFuzzyWatchContextService();
          
          //init
          String collectionId = "id";
          String groupKeyPattern = FuzzyGroupKeyPattern.generatePattern("data*", "group", "12345");
          configFuzzyWatchContextService.addFuzzyWatch(groupKeyPattern, collectionId);
          
          for (int i = 0; i <= mocMaxPatternConfigCount; i++) {
              String keyTenant = GroupKey.getKeyTenant("data1" + i, "group", "12345");
              boolean needNotify1 = configFuzzyWatchContextService.syncGroupKeyContext(keyTenant, ADD_CONFIG);
              Assertions.assertEquals(i < mocMaxPatternConfigCount ? true : false, needNotify1);
          }
          
          String overLimitKey = GroupKey.getKeyTenant("data1" + mocMaxPatternConfigCount, "group", "12345");
          Assertions.assertFalse(configFuzzyWatchContextService.matchGroupKeys(groupKeyPattern).contains(overLimitKey));
          
          //sync init cache service
          ConfigCacheService.dump("data1" + mocMaxPatternConfigCount, "group", "12345", "content",
                  System.currentTimeMillis(), null, null);
          
          String deletedKey = GroupKey.getKeyTenant("data1" + 0, "group", "12345");
          
          configFuzzyWatchContextService.syncGroupKeyContext(deletedKey, DELETE_CONFIG);
          
          Assertions.assertTrue(configFuzzyWatchContextService.matchGroupKeys(groupKeyPattern).contains(overLimitKey));
          
      }
      
      @Test
      public void testInitGroupKeyContext() throws NacosException {
          
          ConfigFuzzyWatchContextService configFuzzyWatchContextService = new ConfigFuzzyWatchContextService();
          String dataIdPrefix = "testinitD";
          // init config
          for (int i = 0; i <= mocMaxPatternConfigCount; i++) {
              ConfigCacheService.dump(dataIdPrefix + i, "group", "12345", "content", System.currentTimeMillis(), null,
                      null);
          }
          
          String collectionId = "id";
          String groupKeyPattern = FuzzyGroupKeyPattern.generatePattern(dataIdPrefix + "*", "group", "12345");
          
          // test init config
          configFuzzyWatchContextService.addFuzzyWatch(groupKeyPattern, collectionId);
          Assertions.assertEquals(mocMaxPatternConfigCount,
                  configFuzzyWatchContextService.matchGroupKeys(groupKeyPattern).size());
          
          for (int i = 1; i < mocMaxPattern; i++) {
              String groupKeyPattern0 = FuzzyGroupKeyPattern.generatePattern(dataIdPrefix + "*" + i, "group", "12345");
              configFuzzyWatchContextService.addFuzzyWatch(groupKeyPattern0, collectionId);
          }
          
          try {
              String groupKeyPatternOver = FuzzyGroupKeyPattern.generatePattern(dataIdPrefix + "*" + mocMaxPattern,
                      "group", "12345");
              
              configFuzzyWatchContextService.addFuzzyWatch(groupKeyPatternOver, collectionId);
              Assertions.assertTrue(false);
          } catch (NacosException nacosException) {
              Assertions.assertEquals(FUZZY_WATCH_PATTERN_OVER_LIMIT.getCode(), nacosException.getErrCode());
              Assertions.assertEquals(FUZZY_WATCH_PATTERN_OVER_LIMIT.getMsg(), nacosException.getErrMsg());
          }
          
      }
      
      @Test
      public void testFuzzyWatch() throws NacosException {
          ConfigFuzzyWatchContextService configFuzzyWatchContextService = new ConfigFuzzyWatchContextService();
          
          //init
          String collectionId = "id";
          String groupKeyPattern = FuzzyGroupKeyPattern.generatePattern("data*", "group", "12345");
          configFuzzyWatchContextService.addFuzzyWatch(groupKeyPattern, collectionId);
          String groupKey = GroupKey.getKeyTenant("data1245", "group", "12345");
          
          boolean needNotify = configFuzzyWatchContextService.syncGroupKeyContext(groupKey, ADD_CONFIG);
          Assertions.assertTrue(needNotify);
          
          Set<String> matchedClients1 = configFuzzyWatchContextService.getMatchedClients(groupKey);
          Assertions.assertTrue(matchedClients1.contains(collectionId));
          
          configFuzzyWatchContextService.removeFuzzyListen(groupKeyPattern, collectionId);
          Set<String> matchedClients = configFuzzyWatchContextService.getMatchedClients(groupKey);
          
          Assertions.assertTrue(CollectionUtils.isEmpty(matchedClients));
          
      }
      
      @Test
      public void testFuzzyWatchOverLimit() throws NacosException {
          ConfigFuzzyWatchContextService configFuzzyWatchContextService = new ConfigFuzzyWatchContextService();
          
          //init
          String collectionId = "id";
          String groupKeyPattern = FuzzyGroupKeyPattern.generatePattern("data*", "group", "12345");
          configFuzzyWatchContextService.addFuzzyWatch(groupKeyPattern, collectionId);
          String groupKey = GroupKey.getKeyTenant("data1245", "group", "12345");
          boolean needNotify = configFuzzyWatchContextService.syncGroupKeyContext(groupKey, ADD_CONFIG);
          
          Assertions.assertTrue(needNotify);
          
          configFuzzyWatchContextService.removeFuzzyListen(groupKeyPattern, collectionId);
          Set<String> matchedClients = configFuzzyWatchContextService.getMatchedClients(groupKey);
          
          Assertions.assertTrue(CollectionUtils.isEmpty(matchedClients));
          
      }
  }
  