content: /*
   *
   * Copyright 1999-2018 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.client.naming.cache;
  
  import com.alibaba.nacos.api.PropertyKeyConst;
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.naming.pojo.Instance;
  import com.alibaba.nacos.api.naming.pojo.ServiceInfo;
  import com.alibaba.nacos.client.env.NacosClientProperties;
  import com.alibaba.nacos.client.monitor.MetricsMonitor;
  import com.alibaba.nacos.client.naming.backups.FailoverReactor;
  import io.prometheus.client.Gauge;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.mockito.MockedStatic;
  import org.mockito.Mockito;
  
  import java.lang.reflect.Field;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Properties;
  import java.util.concurrent.ScheduledExecutorService;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.mockito.ArgumentMatchers.anyInt;
  import static org.mockito.Mockito.doThrow;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.never;
  import static org.mockito.Mockito.times;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  class ServiceInfoHolderTest {
      
      NacosClientProperties nacosClientProperties;
      
      ServiceInfoHolder holder;
      
      @BeforeEach
      void setUp() throws Exception {
          nacosClientProperties = NacosClientProperties.PROTOTYPE.derive();
          holder = new ServiceInfoHolder("aa", "scope-001", nacosClientProperties);
      }
      
      @AfterEach
      void tearDown() throws Exception {
      
      }
      
      @Test
      void testGetServiceInfoMap() throws NoSuchFieldException, IllegalAccessException {
          assertEquals(0, holder.getServiceInfoMap().size());
          Field fieldNotifierEventScope = ServiceInfoHolder.class.getDeclaredField("notifierEventScope");
          fieldNotifierEventScope.setAccessible(true);
          assertEquals("scope-001", fieldNotifierEventScope.get(holder));
      }
      
      @Test
      void testProcessServiceInfo() {
          ServiceInfo info = new ServiceInfo("a@@b@@c");
          Instance instance1 = createInstance("1.1.1.1", 1);
          Instance instance2 = createInstance("1.1.1.2", 2);
          List<Instance> hosts = new ArrayList<>();
          hosts.add(instance1);
          hosts.add(instance2);
          info.setHosts(hosts);
          
          ServiceInfo actual1 = holder.processServiceInfo(info);
          assertEquals(info, actual1);
          
          Instance newInstance1 = createInstance("1.1.1.1", 1);
          newInstance1.setWeight(2.0);
          Instance instance3 = createInstance("1.1.1.3", 3);
          List<Instance> hosts2 = new ArrayList<>();
          hosts2.add(newInstance1);
          hosts2.add(instance3);
          ServiceInfo info2 = new ServiceInfo("a@@b@@c");
          info2.setHosts(hosts2);
          
          ServiceInfo actual2 = holder.processServiceInfo(info2);
          assertEquals(info2, actual2);
      }
      
      @Test
      void testProcessServiceInfoEnableClientMetricsTrue() {
          ServiceInfoHolder holder = createServiceInfoHolder(true);
          ServiceInfo info = new ServiceInfo("a@@b@@c");
          Instance instance1 = createInstance("1.1.1.1", 1);
          Instance instance2 = createInstance("1.1.1.2", 2);
          List<Instance> hosts = new ArrayList<>();
          hosts.add(instance1);
          hosts.add(instance2);
          info.setHosts(hosts);
          
          Gauge.Child mockGaugeChild = mock(Gauge.Child.class);
          try (MockedStatic<MetricsMonitor> mockedMetricsMonitor = Mockito.mockStatic(MetricsMonitor.class)) {
              mockedMetricsMonitor.when(MetricsMonitor::getServiceInfoMapSizeMonitor).thenReturn(mockGaugeChild);
              
              holder.processServiceInfo(info);
              
              verify(mockGaugeChild, times(1)).set(1);
          }
      }
      
      @Test
      void testProcessServiceInfoEnableClientMetricsFalse() {
          ServiceInfoHolder holder = createServiceInfoHolder(false);
          ServiceInfo info = new ServiceInfo("a@@b@@c");
          Instance instance1 = createInstance("1.1.1.1", 1);
          Instance instance2 = createInstance("1.1.1.2", 2);
          List<Instance> hosts = new ArrayList<>();
          hosts.add(instance1);
          hosts.add(instance2);
          info.setHosts(hosts);
          
          try (MockedStatic<MetricsMonitor> mockedMetricsMonitor = Mockito.mockStatic(MetricsMonitor.class)) {
              holder.processServiceInfo(info);
              
              mockedMetricsMonitor.verify(MetricsMonitor::getServiceInfoMapSizeMonitor, never());
          }
      }
      
      @Test
      void testProcessServiceInfoEnableClientMetricsNotSet() {
          ServiceInfoHolder holder = createServiceInfoHolder(null);
          ServiceInfo info = new ServiceInfo("a@@b@@c");
          Instance instance1 = createInstance("1.1.1.1", 1);
          Instance instance2 = createInstance("1.1.1.2", 2);
          List<Instance> hosts = new ArrayList<>();
          hosts.add(instance1);
          hosts.add(instance2);
          
          info.setHosts(hosts);
          
          Gauge.Child mockGaugeChild = mock(Gauge.Child.class);
          try (MockedStatic<MetricsMonitor> mockedMetricsMonitor = Mockito.mockStatic(MetricsMonitor.class)) {
              mockedMetricsMonitor.when(MetricsMonitor::getServiceInfoMapSizeMonitor).thenReturn(mockGaugeChild);
              
              holder.processServiceInfo(info);
              
              verify(mockGaugeChild, times(1)).set(1);
          }
      }
      
      @Test
      void testProcessServiceInfoSetThrowsException() {
          ServiceInfoHolder holder = createServiceInfoHolder(true);
          ServiceInfo info = new ServiceInfo("a@@b@@c");
          Instance instance1 = createInstance("1.1.1.1", 1);
          Instance instance2 = createInstance("1.1.1.2", 2);
          List<Instance> hosts = new ArrayList<>();
          hosts.add(instance1);
          hosts.add(instance2);
          info.setHosts(hosts);
          
          Gauge.Child mockGaugeChild = mock(Gauge.Child.class);
          RuntimeException exception = new RuntimeException("Mocked exception");
          
          try (MockedStatic<MetricsMonitor> mockedMetricsMonitor = Mockito.mockStatic(MetricsMonitor.class)) {
              mockedMetricsMonitor.when(MetricsMonitor::getServiceInfoMapSizeMonitor).thenReturn(mockGaugeChild);
              doThrow(exception).when(mockGaugeChild).set(anyInt());
              
              ServiceInfo actual2 = holder.processServiceInfo(info);
              
              assertEquals(info, actual2);
          }
      }
      
      private ServiceInfoHolder createServiceInfoHolder(Boolean enableClientMetrics) {
          Properties properties = new Properties();
          if (enableClientMetrics != null) {
              properties.put(PropertyKeyConst.ENABLE_CLIENT_METRICS, String.valueOf(enableClientMetrics));
          }
          NacosClientProperties clientProperties = NacosClientProperties.PROTOTYPE.derive(properties);
          String namespace = "test-namespace";
          String notifierEventScope = "scope-001";
          return new ServiceInfoHolder(namespace, notifierEventScope, clientProperties);
      }
      
      private Instance createInstance(String ip, int port) {
          Instance instance = new Instance();
          instance.setIp(ip);
          instance.setPort(port);
          return instance;
      }
      
      @Test
      void testProcessServiceInfo2() {
          String json = "{\"groupName\":\"a\",\"name\":\"b\",\"clusters\":\"c\"}";
          
          ServiceInfo actual = holder.processServiceInfo(json);
          ServiceInfo expect = new ServiceInfo("a@@b@@c");
          expect.setJsonFromServer(json);
          assertEquals(expect.getKey(), actual.getKey());
      }
      
      @Test
      void testProcessServiceInfoWithPushEmpty() throws NacosException {
          ServiceInfo oldInfo = new ServiceInfo("a@@b@@c");
          Instance instance1 = createInstance("1.1.1.1", 1);
          Instance instance2 = createInstance("1.1.1.2", 2);
          List<Instance> hosts = new ArrayList<>();
          hosts.add(instance1);
          hosts.add(instance2);
          oldInfo.setHosts(hosts);
          
          nacosClientProperties.setProperty(PropertyKeyConst.NAMING_PUSH_EMPTY_PROTECTION, "true");
          holder.shutdown();
          holder = new ServiceInfoHolder("aa", "scope-001", nacosClientProperties);
          holder.processServiceInfo(oldInfo);
          
          ServiceInfo newInfo = new ServiceInfo("a@@b@@c");
          
          final ServiceInfo actual = holder.processServiceInfo(newInfo);
          
          assertEquals(oldInfo.getKey(), actual.getKey());
          assertEquals(2, actual.getHosts().size());
      }
      
      @Test
      void testProcessNullServiceInfo() {
          assertNull(holder.processServiceInfo(new ServiceInfo()));
      }
      
      @Test
      void testProcessServiceInfoForOlder() {
          ServiceInfo info = new ServiceInfo("a@@b@@c");
          Instance instance1 = createInstance("1.1.1.1", 1);
          Instance instance2 = createInstance("1.1.1.2", 2);
          List<Instance> hosts = new ArrayList<>();
          hosts.add(instance1);
          hosts.add(instance2);
          info.setHosts(hosts);
          info.setLastRefTime(System.currentTimeMillis());
          holder.processServiceInfo(info);
          ServiceInfo olderInfo = new ServiceInfo("a@@b@@c");
          olderInfo.setLastRefTime(0L);
          final ServiceInfo actual = holder.processServiceInfo(olderInfo);
          assertEquals(olderInfo, actual);
      }
      
      @Test
      void testGetServiceInfo() {
          ServiceInfo info = new ServiceInfo("a@@b@@c");
          Instance instance1 = createInstance("1.1.1.1", 1);
          List<Instance> hosts = new ArrayList<>();
          hosts.add(instance1);
          info.setHosts(hosts);
          
          ServiceInfo expect = holder.processServiceInfo(info);
          String serviceName = "b";
          String groupName = "a";
          ServiceInfo actual = holder.getServiceInfo(serviceName, groupName);
          assertEquals(expect.getKey(), actual.getKey());
          assertEquals(expect.getHosts().size(), actual.getHosts().size());
          assertEquals(expect.getHosts().get(0), actual.getHosts().get(0));
      }
      
      @Test
      void testShutdown() throws NacosException, NoSuchFieldException, IllegalAccessException {
          Field field = ServiceInfoHolder.class.getDeclaredField("failoverReactor");
          field.setAccessible(true);
          FailoverReactor reactor = (FailoverReactor) field.get(holder);
          Field executorService = FailoverReactor.class.getDeclaredField("executorService");
          executorService.setAccessible(true);
          ScheduledExecutorService pool = (ScheduledExecutorService) executorService.get(reactor);
          assertFalse(pool.isShutdown());
          holder.shutdown();
          assertTrue(pool.isShutdown());
      }
      
      @Test
      void testConstructWithCacheLoad() throws NacosException {
          nacosClientProperties.setProperty(PropertyKeyConst.NAMING_LOAD_CACHE_AT_START, "true");
          nacosClientProperties.setProperty(PropertyKeyConst.NAMING_CACHE_REGISTRY_DIR, "non-exist");
          holder.shutdown();
          holder = new ServiceInfoHolder("aa", "scope-001", nacosClientProperties);
          assertEquals(System.getProperty("user.home") + "/nacos/non-exist/naming/aa", holder.getCacheDir());
          assertTrue(holder.getServiceInfoMap().isEmpty());
      }
      
      @Test
      void testIsFailoverSwitch() throws IllegalAccessException, NoSuchFieldException, NacosException {
          FailoverReactor mock = injectMockFailoverReactor();
          when(mock.isFailoverSwitch()).thenReturn(true);
          assertTrue(holder.isFailoverSwitch());
      }
      
      @Test
      void testGetFailoverServiceInfo() throws IllegalAccessException, NoSuchFieldException, NacosException {
          FailoverReactor mock = injectMockFailoverReactor();
          ServiceInfo serviceInfo = new ServiceInfo("a@@b@@c");
          when(mock.getService("a@@b")).thenReturn(serviceInfo);
          assertEquals(serviceInfo, holder.getFailoverServiceInfo("b", "a"));
      }
      
      private FailoverReactor injectMockFailoverReactor()
              throws NoSuchFieldException, IllegalAccessException, NacosException {
          Field field = ServiceInfoHolder.class.getDeclaredField("failoverReactor");
          field.setAccessible(true);
          FailoverReactor old = (FailoverReactor) field.get(holder);
          old.shutdown();
          FailoverReactor mock = mock(FailoverReactor.class);
          field.set(holder, mock);
          return mock;
      }
  }