| /* |
| * 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.samza.clustermanager; |
| |
| import com.google.common.base.Objects; |
| import com.google.common.base.Preconditions; |
| |
| /** |
| * A fault domain is a set of hardware components that share a single point of failure. |
| * This class identifies the type (ex: rack) and ID (ex: rack ID) of the fault domain in question. |
| * A host can belong to multiple fault domains. |
| * A fault domain may have greater than or equal to 1 hosts. |
| * A cluster can comprise of hosts on multiple fault domains. |
| */ |
| public class FaultDomain { |
| |
| private final FaultDomainType type; |
| private final String id; |
| |
| public FaultDomain(FaultDomainType type, String id) { |
| Preconditions.checkNotNull(type, "Fault domain type (ex:rack) cannot be null."); |
| Preconditions.checkNotNull(id, "Fault domain ID (rack ID) cannot be null."); |
| |
| this.type = type; |
| this.id = id; |
| } |
| |
| /** |
| * Gets the type of fault domain, for example: rack. |
| * @return Type of fault domain |
| */ |
| public FaultDomainType getType() { |
| return type; |
| } |
| |
| /** |
| * Gets the id of the fault domain, for example: rack ID. |
| * @return fault domain ID |
| */ |
| public String getId() { |
| return id; |
| } |
| |
| @Override |
| public String toString() { |
| return " {" + |
| "type = " + type + |
| ", id = " + id + |
| "} "; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| FaultDomain that = (FaultDomain) o; |
| return Objects.equal(type, that.type) && Objects.equal(id, that.id); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(type, id); |
| } |
| |
| } |