content: /*
   * Copyright 1999-2021 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.core.monitor;
  
  import com.alibaba.nacos.sys.utils.ApplicationUtils;
  import io.micrometer.core.instrument.Timer;
  import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
  import io.micrometer.prometheus.PrometheusMeterRegistry;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.Mock;
  import org.mockito.junit.jupiter.MockitoExtension;
  import org.mockito.junit.jupiter.MockitoSettings;
  import org.mockito.quality.Strictness;
  import org.springframework.context.ConfigurableApplicationContext;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.mockito.Mockito.when;
  
  /**
   * {@link MetricsMonitor} and {@link NacosMeterRegistryCenter} unit tests.
   *
   * @author chenglu
   * @author <a href="mailto:liuyixiao0821@gmail.com">liuyixiao</a>
   */
  @MockitoSettings(strictness = Strictness.LENIENT)
  @ExtendWith(MockitoExtension.class)
  class MetricsMonitorTest {
      
      @Mock
      private ConfigurableApplicationContext context;
      
      @BeforeEach
      void initMeterRegistry() {
          ApplicationUtils.injectContext(context);
          when(context.getBean(PrometheusMeterRegistry.class)).thenReturn(null);
          // add simple meterRegistry.
          NacosMeterRegistryCenter.getMeterRegistry(NacosMeterRegistryCenter.CORE_STABLE_REGISTRY).add(new SimpleMeterRegistry());
      }
      
      @Test
      void testSdkServerExecutorMetric() {
          MetricsMonitor.getSdkServerExecutorMetric().getPoolSize().set(1);
          MetricsMonitor.getSdkServerExecutorMetric().getMaximumPoolSize().set(1);
          MetricsMonitor.getSdkServerExecutorMetric().getCorePoolSize().set(1);
          MetricsMonitor.getSdkServerExecutorMetric().getActiveCount().set(1);
          MetricsMonitor.getSdkServerExecutorMetric().getInQueueTaskCount().set(1);
          MetricsMonitor.getSdkServerExecutorMetric().getTaskCount().set(1);
          MetricsMonitor.getSdkServerExecutorMetric().getCompletedTaskCount().set(1);
          assertEquals("grpcSdkServer", MetricsMonitor.getSdkServerExecutorMetric().getType());
          assertEquals(1, MetricsMonitor.getSdkServerExecutorMetric().getPoolSize().get());
          assertEquals(1, MetricsMonitor.getSdkServerExecutorMetric().getMaximumPoolSize().get());
          assertEquals(1, MetricsMonitor.getSdkServerExecutorMetric().getCorePoolSize().get());
          assertEquals(1, MetricsMonitor.getSdkServerExecutorMetric().getActiveCount().get());
          assertEquals(1, MetricsMonitor.getSdkServerExecutorMetric().getInQueueTaskCount().get());
          assertEquals(1, MetricsMonitor.getSdkServerExecutorMetric().getTaskCount().get());
          assertEquals(1, MetricsMonitor.getSdkServerExecutorMetric().getCompletedTaskCount().get());
      }
      
      @Test
      void testClusterServerExecutorMetric() {
          MetricsMonitor.getClusterServerExecutorMetric().getPoolSize().set(1);
          MetricsMonitor.getClusterServerExecutorMetric().getMaximumPoolSize().set(1);
          MetricsMonitor.getClusterServerExecutorMetric().getCorePoolSize().set(1);
          MetricsMonitor.getClusterServerExecutorMetric().getActiveCount().set(1);
          MetricsMonitor.getClusterServerExecutorMetric().getInQueueTaskCount().set(1);
          MetricsMonitor.getClusterServerExecutorMetric().getTaskCount().set(1);
          MetricsMonitor.getClusterServerExecutorMetric().getCompletedTaskCount().set(1);
          assertEquals("grpcClusterServer", MetricsMonitor.getClusterServerExecutorMetric().getType());
          assertEquals(1, MetricsMonitor.getClusterServerExecutorMetric().getPoolSize().get());
          assertEquals(1, MetricsMonitor.getClusterServerExecutorMetric().getMaximumPoolSize().get());
          assertEquals(1, MetricsMonitor.getClusterServerExecutorMetric().getCorePoolSize().get());
          assertEquals(1, MetricsMonitor.getClusterServerExecutorMetric().getActiveCount().get());
          assertEquals(1, MetricsMonitor.getClusterServerExecutorMetric().getInQueueTaskCount().get());
          assertEquals(1, MetricsMonitor.getClusterServerExecutorMetric().getTaskCount().get());
          assertEquals(1, MetricsMonitor.getClusterServerExecutorMetric().getCompletedTaskCount().get());
      }
      
      @Test
      void testGetLongConnectionMonitor() {
          AtomicInteger atomicInteger = MetricsMonitor.getLongConnectionMonitor();
          assertEquals(0, atomicInteger.get());
      }
      
      @Test
      void testRaftReadIndexFailed() {
          MetricsMonitor.raftReadIndexFailed();
          MetricsMonitor.raftReadIndexFailed();
          assertEquals(2D, MetricsMonitor.getRaftReadIndexFailed().totalAmount(), 0.01);
      }
      
      @Test
      void testRaftReadFromLeader() {
          MetricsMonitor.raftReadFromLeader();
          assertEquals(1D, MetricsMonitor.getRaftFromLeader().totalAmount(), 0.01);
      }
      
      @Test
      void testRaftApplyLogTimer() {
          Timer raftApplyTimerLog = MetricsMonitor.getRaftApplyLogTimer();
          raftApplyTimerLog.record(10, TimeUnit.SECONDS);
          raftApplyTimerLog.record(20, TimeUnit.SECONDS);
          assertEquals(0.5D, raftApplyTimerLog.totalTime(TimeUnit.MINUTES), 0.01);
          
          assertEquals(30D, raftApplyTimerLog.totalTime(TimeUnit.SECONDS), 0.01);
      }
      
      @Test
      void testRaftApplyReadTimer() {
          Timer raftApplyReadTimer = MetricsMonitor.getRaftApplyReadTimer();
          raftApplyReadTimer.record(10, TimeUnit.SECONDS);
          raftApplyReadTimer.record(20, TimeUnit.SECONDS);
          assertEquals(0.5D, raftApplyReadTimer.totalTime(TimeUnit.MINUTES), 0.01);
          
          assertEquals(30D, raftApplyReadTimer.totalTime(TimeUnit.SECONDS), 0.01);
      }
      
      @Test
      void testRefreshModuleConnectionCount() {
          // refresh
          Map<String, Integer> map = new HashMap<>();
          map.put("naming", 10);
          MetricsMonitor.refreshModuleConnectionCount(map);
          assertEquals(1, MetricsMonitor.getModuleConnectionCnt().size());
          assertEquals(10, MetricsMonitor.getModuleConnectionCnt().get("naming").get());
          
          // refresh again
          map = new HashMap<>();
          map.put("naming", 11);
          map.put("config", 1);
          MetricsMonitor.refreshModuleConnectionCount(map);
          assertEquals(2, MetricsMonitor.getModuleConnectionCnt().size());
          assertEquals(11, MetricsMonitor.getModuleConnectionCnt().get("naming").get());
          assertEquals(1, MetricsMonitor.getModuleConnectionCnt().get("config").get());
          
          // refresh again
          map = new HashMap<>();
          map.put("naming", 1);
          MetricsMonitor.refreshModuleConnectionCount(map);
          assertEquals(2, MetricsMonitor.getModuleConnectionCnt().size());
          assertEquals(1, MetricsMonitor.getModuleConnectionCnt().get("naming").get());
          assertEquals(0, MetricsMonitor.getModuleConnectionCnt().get("config").get());
      }
  }
  