| // 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.impala.catalog; |
| |
| import org.apache.hadoop.hdfs.protocol.CachePoolInfo; |
| |
| import org.apache.impala.thrift.TCatalogObject; |
| import org.apache.impala.thrift.TCatalogObjectType; |
| import org.apache.impala.thrift.THdfsCachePool; |
| import com.google.common.base.Preconditions; |
| |
| /** |
| * Represents an HDFS cache pool (CachePoolInfo class). Currently, the only metadata we |
| * care about for cache pools is the cache pool name. In the future it may be desirable |
| * to track additional metadata such as the owner, size, and current usage of the pool. |
| */ |
| public class HdfsCachePool extends CatalogObjectImpl { |
| private final THdfsCachePool cachePool_; |
| |
| public HdfsCachePool(CachePoolInfo cachePoolInfo) { |
| cachePool_ = new THdfsCachePool(cachePoolInfo.getPoolName()); |
| } |
| |
| public HdfsCachePool(THdfsCachePool cachePool) { |
| Preconditions.checkNotNull(cachePool); |
| cachePool_ = cachePool; |
| } |
| |
| @Override |
| public TCatalogObjectType getCatalogObjectType() { |
| return TCatalogObjectType.HDFS_CACHE_POOL; |
| } |
| |
| public THdfsCachePool toThrift() { |
| return cachePool_; |
| } |
| |
| public static HdfsCachePool fromThrift(THdfsCachePool cachePool) { |
| return new HdfsCachePool(cachePool); |
| } |
| |
| @Override |
| public String getName() { return cachePool_.getPool_name(); } |
| |
| @Override |
| protected void setTCatalogObject(TCatalogObject catalogObject) { |
| catalogObject.setCache_pool(toThrift()); |
| } |
| } |