| /* |
| * 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.tephra.hbase.txprune; |
| |
| |
| import com.google.common.base.Supplier; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.tephra.coprocessor.CacheSupplier; |
| import org.apache.tephra.coprocessor.ReferenceCountedSupplier; |
| |
| /** |
| * Supplies instances of {@link PruneUpperBoundWriter} implementations. |
| */ |
| public class PruneUpperBoundWriterSupplier implements CacheSupplier<PruneUpperBoundWriter> { |
| |
| private static final ReferenceCountedSupplier<PruneUpperBoundWriter> referenceCountedSupplier = |
| new ReferenceCountedSupplier<>(PruneUpperBoundWriter.class.getSimpleName()); |
| |
| private final Supplier<PruneUpperBoundWriter> supplier; |
| |
| public PruneUpperBoundWriterSupplier(final TableName tableName, final DataJanitorState dataJanitorState, |
| final long pruneFlushInterval) { |
| this.supplier = new Supplier<PruneUpperBoundWriter>() { |
| @Override |
| public PruneUpperBoundWriter get() { |
| return new PruneUpperBoundWriter(tableName, dataJanitorState, pruneFlushInterval); |
| } |
| }; |
| } |
| |
| @Override |
| public PruneUpperBoundWriter get() { |
| return referenceCountedSupplier.getOrCreate(supplier); |
| } |
| |
| public void release() { |
| referenceCountedSupplier.release(); |
| } |
| } |