content: /*
   * 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.kafka.connect.runtime;
  
  import org.apache.kafka.common.utils.Utils;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.lang.management.ManagementFactory;
  import java.lang.management.OperatingSystemMXBean;
  import java.lang.management.RuntimeMXBean;
  import java.util.LinkedHashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Connect Worker system and runtime information.
   */
  public class WorkerInfo {
      private static final Logger log = LoggerFactory.getLogger(WorkerInfo.class);
      private static final RuntimeMXBean RUNTIME;
      private static final OperatingSystemMXBean OS;
  
      static {
          RUNTIME = ManagementFactory.getRuntimeMXBean();
          OS = ManagementFactory.getOperatingSystemMXBean();
      }
  
      private final Map<String, Object> values;
  
      /**
       * Constructor.
       */
      public WorkerInfo() {
          this.values = new LinkedHashMap<>();
          addRuntimeInfo();
          addSystemInfo();
      }
  
      /**
       * Log the values of this object at level INFO.
       */
      // Equivalent to logAll in AbstractConfig
      public void logAll() {
          StringBuilder b = new StringBuilder();
          b.append(getClass().getSimpleName());
          b.append(" values: ");
          b.append(Utils.NL);
  
          for (Map.Entry<String, Object> entry : values.entrySet()) {
              b.append('\t');
              b.append(entry.getKey());
              b.append(" = ");
              b.append(format(entry.getValue()));
              b.append(Utils.NL);
          }
          log.info(b.toString());
      }
  
      private static Object format(Object value) {
          return value == null ? "NA" : value;
      }
  
      /**
       * Collect general runtime information.
       */
      protected final void addRuntimeInfo() {
          List<String> jvmArgs = RUNTIME.getInputArguments();
          values.put("jvm.args", String.join(", ", jvmArgs));
          String[] jvmSpec = {
                  RUNTIME.getVmVendor(),
                  RUNTIME.getVmName(),
                  RUNTIME.getSystemProperties().get("java.version"),
                  RUNTIME.getVmVersion()
          };
          values.put("jvm.spec", String.join(", ", jvmSpec));
          values.put("jvm.classpath", RUNTIME.getClassPath());
      }
  
      /**
       * Collect system information.
       */
      protected final void addSystemInfo() {
          String[] osInfo = {
                  OS.getName(),
                  OS.getArch(),
                  OS.getVersion(),
          };
          values.put("os.spec", String.join(", ", osInfo));
          values.put("os.vcpus", String.valueOf(OS.getAvailableProcessors()));
      }
  
  }
  