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.api.naming.pojo;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.nacos.api.common.Constants;
  import com.alibaba.nacos.api.naming.PreservedMetadataKeys;
  import org.apache.commons.lang3.StringUtils;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import static com.alibaba.nacos.api.common.Constants.NUMBER_PATTERN;
  
  /**
   * Instance
   *
   * @author nkorange
   */
  public class Instance {
  
      /**
       * unique id of this instance.
       */
      private String instanceId;
  
      /**
       * instance ip
       */
      private String ip;
  
      /**
       * instance port
       */
      private int port;
  
      /**
       * instance weight
       */
      private double weight = 1.0D;
  
      /**
       * instance health status
       */
      private boolean healthy = true;
  
      /**
       * If instance is enabled to accept request
       */
      private boolean enabled = true;
  
      /**
       * If instance is ephemeral
       *
       * @since 1.0.0
       */
      private boolean ephemeral = true;
  
      /**
       * cluster information of instance
       */
      private String clusterName;
  
      /**
       * Service information of instance
       */
      private String serviceName;
  
      /**
       * user extended attributes
       */
      private Map<String, String> metadata = new HashMap<String, String>();
  
      public String getInstanceId() {
          return instanceId;
      }
  
      public void setInstanceId(String instanceId) {
          this.instanceId = instanceId;
      }
  
      public String getIp() {
          return ip;
      }
  
      public void setIp(String ip) {
          this.ip = ip;
      }
  
      public int getPort() {
          return port;
      }
  
      public void setPort(int port) {
          this.port = port;
      }
  
      public double getWeight() {
          return weight;
      }
  
      public void setWeight(double weight) {
          this.weight = weight;
      }
  
      public boolean isHealthy() {
          return healthy;
      }
  
      public void setHealthy(boolean healthy) {
          this.healthy = healthy;
      }
  
      public String getClusterName() {
          return clusterName;
      }
  
      public void setClusterName(String clusterName) {
          this.clusterName = clusterName;
      }
  
      public String getServiceName() {
          return serviceName;
      }
  
      public void setServiceName(String serviceName) {
          this.serviceName = serviceName;
      }
  
      public Map<String, String> getMetadata() {
          return metadata;
      }
  
      public void setMetadata(Map<String, String> metadata) {
          this.metadata = metadata;
      }
  
      public void addMetadata(String key, String value) {
          this.metadata.put(key, value);
      }
  
      public boolean isEnabled() {
          return enabled;
      }
  
      public void setEnabled(boolean enabled) {
          this.enabled = enabled;
      }
  
      public boolean isEphemeral() {
          return ephemeral;
      }
  
      public void setEphemeral(boolean ephemeral) {
          this.ephemeral = ephemeral;
      }
  
      @Override
      public String toString() {
          return JSON.toJSONString(this);
      }
  
      public String toInetAddr() {
          return ip + ":" + port;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (!(obj instanceof Instance)) {
              return false;
          }
  
          Instance host = (Instance) obj;
  
          return strEquals(toString(), host.toString());
      }
  
      @Override
      public int hashCode() {
          return toString().hashCode();
      }
  
      private static boolean strEquals(String str1, String str2) {
          return str1 == null ? str2 == null : str1.equals(str2);
      }
  
      public long getInstanceHeartBeatInterval() {
          return getMetaDataByKeyWithDefault(PreservedMetadataKeys.HEART_BEAT_INTERVAL, Constants.DEFAULT_HEART_BEAT_INTERVAL);
      }
  
      public long getInstanceHeartBeatTimeOut() {
          return getMetaDataByKeyWithDefault(PreservedMetadataKeys.HEART_BEAT_TIMEOUT, Constants.DEFAULT_HEART_BEAT_TIMEOUT);
      }
  
      public long getIpDeleteTimeout() {
          return getMetaDataByKeyWithDefault(PreservedMetadataKeys.IP_DELETE_TIMEOUT, Constants.DEFAULT_IP_DELETE_TIMEOUT);
      }
  
      private long getMetaDataByKeyWithDefault( String key, long defaultValue) {
          if (getMetadata() == null || getMetadata().isEmpty()) {
              return defaultValue;
          }
          String value = getMetadata().get(key);
          if (!StringUtils.isEmpty(value) && value.matches(NUMBER_PATTERN)) {
              return Long.valueOf(value);
          }
          return defaultValue;
      }
  
  }
  