| /** |
| * 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.hadoop.hdfs.protocol; |
| |
| import com.google.common.base.Preconditions; |
| import org.apache.commons.lang.builder.EqualsBuilder; |
| import org.apache.commons.lang.builder.HashCodeBuilder; |
| import org.apache.hadoop.classification.InterfaceAudience; |
| |
| import java.io.Serializable; |
| |
| /** |
| * HDFS internal presentation of a {@link ErasureCodingPolicy}. Also contains |
| * additional information such as {@link ErasureCodingPolicyState}. |
| */ |
| @InterfaceAudience.Private |
| public class ErasureCodingPolicyInfo implements Serializable { |
| |
| private static final long serialVersionUID = 0x31; |
| |
| private final ErasureCodingPolicy policy; |
| private ErasureCodingPolicyState state; |
| |
| public ErasureCodingPolicyInfo(final ErasureCodingPolicy thePolicy, |
| final ErasureCodingPolicyState theState) { |
| Preconditions.checkNotNull(thePolicy); |
| Preconditions.checkNotNull(theState); |
| policy = thePolicy; |
| state = theState; |
| } |
| |
| public ErasureCodingPolicyInfo(final ErasureCodingPolicy thePolicy) { |
| this(thePolicy, ErasureCodingPolicyState.DISABLED); |
| } |
| |
| public ErasureCodingPolicy getPolicy() { |
| return policy; |
| } |
| |
| public ErasureCodingPolicyState getState() { |
| return state; |
| } |
| |
| public void setState(final ErasureCodingPolicyState newState) { |
| Preconditions.checkNotNull(newState, "New state should not be null."); |
| state = newState; |
| } |
| |
| public boolean isEnabled() { |
| return (this.state == ErasureCodingPolicyState.ENABLED); |
| } |
| |
| public boolean isDisabled() { |
| return (this.state == ErasureCodingPolicyState.DISABLED); |
| } |
| |
| public boolean isRemoved() { |
| return (this.state == ErasureCodingPolicyState.REMOVED); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o == null) { |
| return false; |
| } |
| if (o == this) { |
| return true; |
| } |
| if (o.getClass() != getClass()) { |
| return false; |
| } |
| ErasureCodingPolicyInfo rhs = (ErasureCodingPolicyInfo) o; |
| return new EqualsBuilder() |
| .append(policy, rhs.policy) |
| .append(state, rhs.state) |
| .isEquals(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return new HashCodeBuilder(303855623, 582626729) |
| .append(policy) |
| .append(state) |
| .toHashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| return policy.toString() + ", State=" + state.toString(); |
| } |
| } |