content: /*
   * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
   * 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 me.ahoo.cosid.machine;
  
  import com.google.common.base.MoreObjects;
  import com.google.common.base.Objects;
  import com.google.errorprone.annotations.Immutable;
  
  /**
   * InstanceId.
   *
   * @author ahoo wang
   * @see MachineId
   */
  @Immutable
  public class InstanceId {
      public static final InstanceId NONE = new InstanceId("none", false);
      
      private final String instanceId;
      private final boolean stable;
      
      public InstanceId(String instanceId, boolean stable) {
          this.instanceId = instanceId;
          this.stable = stable;
      }
      
      /**
       * 稳定的的实例拥有稳定的机器号.
       *
       * @return Is the instance deployment status stable?
       */
      public boolean isStable() {
          return stable;
      }
      
      public String getInstanceId() {
          return instanceId;
      }
      
      @Override
      public String toString() {
          return MoreObjects.toStringHelper(this)
              .add("instanceId", instanceId)
              .add("stable", stable)
              .toString();
      }
      
      public static InstanceId of(String host, int port, boolean stable) {
          String instanceIdStr = String.format("%s:%s", host, port);
          return of(instanceIdStr, stable);
      }
      
      public static InstanceId of(String instanceId, boolean stable) {
          return new InstanceId(instanceId, stable);
      }
      
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (!(o instanceof InstanceId)) {
              return false;
          }
          InstanceId that = (InstanceId) o;
          return stable == that.stable && Objects.equal(instanceId, that.instanceId);
      }
      
      @Override
      public int hashCode() {
          return Objects.hashCode(instanceId, stable);
      }
  }
  