/* * 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.streaming; import java.util.ArrayList; import java.util.Collection; import java.util.UUID; import org.apache.cassandra.config.Schema; import org.apache.cassandra.db.ColumnFamilyStore; import org.apache.cassandra.db.Keyspace; import org.apache.cassandra.io.sstable.SSTableReader; import org.apache.cassandra.utils.Pair; /** * Task that manages receiving files for the session for certain ColumnFamily. */ public class StreamReceiveTask extends StreamTask { // number of files to receive private final int totalFiles; // total size of files to receive private final long totalSize; // holds references to SSTables received protected Collection<SSTableReader> sstables; public StreamReceiveTask(StreamSession session, UUID cfId, int totalFiles, long totalSize) { super(session, cfId); this.totalFiles = totalFiles; this.totalSize = totalSize; this.sstables = new ArrayList<>(totalFiles); } /** * Process received file. * * @param sstable SSTable file received. */ public void received(SSTableReader sstable) { assert cfId.equals(sstable.metadata.cfId); sstables.add(sstable); if (sstables.size() == totalFiles) complete(); } public int getTotalNumberOfFiles() { return totalFiles; } public long getTotalSize() { return totalSize; } // TODO should be run in background so that this does not block streaming private void complete() { if (!SSTableReader.acquireReferences(sstables)) throw new AssertionError("We shouldn't fail acquiring a reference on a sstable that has just been transferred"); try { Pair<String, String> kscf = Schema.instance.getCF(cfId); ColumnFamilyStore cfs = Keyspace.open(kscf.left).getColumnFamilyStore(kscf.right); // add sstables and build secondary indexes cfs.addSSTables(sstables); cfs.indexManager.maybeBuildSecondaryIndexes(sstables, cfs.indexManager.allIndexesNames()); } finally { SSTableReader.releaseReferences(sstables); } session.taskCompleted(this); } }