| /* |
| * 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.cassandra.db; |
| |
| import java.util.UUID; |
| |
| import org.apache.cassandra.db.filter.ClusteringIndexFilter; |
| import org.apache.cassandra.db.filter.ColumnFilter; |
| import org.apache.cassandra.db.partitions.PartitionUpdate; |
| import org.apache.cassandra.db.rows.UnfilteredRowIterator; |
| import org.apache.cassandra.db.rows.UnfilteredRowIteratorWithLowerBound; |
| import org.apache.cassandra.io.sstable.format.SSTableReader; |
| import org.apache.cassandra.utils.FBUtilities; |
| |
| public interface StorageHook |
| { |
| public static final StorageHook instance = createHook(); |
| |
| public void reportWrite(UUID cfid, PartitionUpdate partitionUpdate); |
| public void reportRead(UUID cfid, DecoratedKey key); |
| public UnfilteredRowIteratorWithLowerBound makeRowIteratorWithLowerBound(ColumnFamilyStore cfs, |
| DecoratedKey partitionKey, |
| SSTableReader sstable, |
| ClusteringIndexFilter filter, |
| ColumnFilter selectedColumns, |
| boolean isForThrift, |
| int nowInSec, |
| boolean applyThriftTransformation); |
| public UnfilteredRowIterator makeRowIterator(ColumnFamilyStore cfs, |
| SSTableReader sstable, |
| DecoratedKey key, |
| Slices slices, |
| ColumnFilter selectedColumns, |
| boolean reversed, |
| boolean isForThrift); |
| |
| static StorageHook createHook() |
| { |
| String className = System.getProperty("cassandra.storage_hook"); |
| if (className != null) |
| { |
| return FBUtilities.construct(className, StorageHook.class.getSimpleName()); |
| } |
| else |
| { |
| return new StorageHook() |
| { |
| public void reportWrite(UUID cfid, PartitionUpdate partitionUpdate) {} |
| |
| public void reportRead(UUID cfid, DecoratedKey key) {} |
| |
| public UnfilteredRowIteratorWithLowerBound makeRowIteratorWithLowerBound(ColumnFamilyStore cfs, DecoratedKey partitionKey, SSTableReader sstable, ClusteringIndexFilter filter, ColumnFilter selectedColumns, boolean isForThrift, int nowInSec, boolean applyThriftTransformation) |
| { |
| return new UnfilteredRowIteratorWithLowerBound(partitionKey, |
| sstable, |
| filter, |
| selectedColumns, |
| isForThrift, |
| nowInSec, |
| applyThriftTransformation); |
| } |
| |
| public UnfilteredRowIterator makeRowIterator(ColumnFamilyStore cfs, SSTableReader sstable, DecoratedKey key, Slices slices, ColumnFilter selectedColumns, boolean reversed, boolean isForThrift) |
| { |
| return sstable.iterator(key, slices, selectedColumns, reversed, isForThrift); |
| } |
| }; |
| } |
| } |
| } |