| /* |
| * 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.io.sstable.format; |
| |
| import org.apache.cassandra.db.DecoratedKey; |
| import org.apache.cassandra.db.rows.Unfiltered; |
| |
| /** |
| * Observer for events in the lifecycle of writing out an sstable. |
| */ |
| public interface SSTableFlushObserver |
| { |
| /** |
| * Called before writing any data to the sstable. |
| */ |
| void begin(); |
| |
| /** |
| * Called when a new partition in being written to the sstable, |
| * but before any cells are processed (see {@link #nextUnfilteredCluster(Unfiltered)}). |
| * |
| * @param key The key being appended to SSTable. |
| * @param indexPosition The position of the key in the SSTable PRIMARY_INDEX file. |
| */ |
| void startPartition(DecoratedKey key, long indexPosition); |
| |
| /** |
| * Called after the unfiltered cluster is written to the sstable. |
| * Will be preceded by a call to {@code startPartition(DecoratedKey, long)}, |
| * and the cluster should be assumed to belong to that partition. |
| * |
| * @param unfilteredCluster The unfiltered cluster being added to SSTable. |
| */ |
| void nextUnfilteredCluster(Unfiltered unfilteredCluster); |
| |
| /** |
| * Called when all data is written to the file and it's ready to be finished up. |
| */ |
| void complete(); |
| } |