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   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.activemq.artemis.tests.integration.plugin;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import io.micrometer.core.instrument.Meter;
  import org.apache.activemq.artemis.core.config.MetricsConfiguration;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.core.server.metrics.plugins.SimpleMetricsPlugin;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  public class SystemMetricsTest extends ActiveMQTestBase {
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
     }
  
     String[] fileDescriptorsMetrics = new String[] {"process.files.open", "process.files.max"};
     String[] processorMetrics = new String[] {"system.cpu.count", "system.load.average.1m", "system.cpu.usage", "process.cpu.usage"};
     String[] uptimeMetrics = new String[] {"process.uptime", "process.start.time"};
  
     @Test
     public void testFileDescriptorsMetricsPositive() throws Exception {
        internalTestMetrics(true, false, true, false, false, fileDescriptorsMetrics);
     }
  
     @Test
     public void testFileDescriptorsMetricsNegative() throws Exception {
        internalTestMetrics(false, false, false, false, false, fileDescriptorsMetrics);
     }
  
     @Test
     public void testProcessorMetricsPositive() throws Exception {
        internalTestMetrics(true, false, false, true, false, processorMetrics);
     }
  
     @Test
     public void testProcessorMetricsNegative() throws Exception {
        internalTestMetrics(false, false, false, false, false, processorMetrics);
     }
  
     @Test
     public void testUptimeMetricsPositive() throws Exception {
        internalTestMetrics(true, false, false, false, true, uptimeMetrics);
     }
  
     @Test
     public void testUptimeMetricsNegative() throws Exception {
        internalTestMetrics(false, false, false, false, false, uptimeMetrics);
     }
  
     private void internalTestMetrics(boolean found, boolean diskSpace, boolean fileDescriptors, boolean processor, boolean uptime, String... matches) throws Exception {
        ActiveMQServer server = createServer(false, createDefaultInVMConfig()
           .setMetricsConfiguration(new MetricsConfiguration()
                                       .setPlugin(new SimpleMetricsPlugin().init(null))
                                       .setFileDescriptors(fileDescriptors)
                                       .setProcessor(processor)
                                       .setUptime(uptime)));
        server.start();
        boolean result = false;
        String brokerTagValue = "";
        for (Meter.Id meterId : MetricsPluginTest.getMetrics(server).keySet()) {
           for (String match : matches) {
              if (meterId.getName().startsWith(match)) {
                 result = true;
                 brokerTagValue = meterId.getTag("broker");
                 break;
              }
           }
        }
  
        assertEquals(found, result);
        if (found) {
           assertEquals(brokerTagValue, server.getConfiguration().getName());
        }
     }
  }
  