| /** |
| * 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.bookkeeper.client; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.bookkeeper.client.BKException.BKNotEnoughBookiesException; |
| import org.apache.bookkeeper.net.BookieSocketAddress; |
| |
| interface BookieWatcher { |
| Set<BookieSocketAddress> getBookies() throws BKException; |
| Set<BookieSocketAddress> getReadOnlyBookies() throws BKException; |
| |
| /** |
| * Create an ensemble with given <i>ensembleSize</i> and <i>writeQuorumSize</i>. |
| * |
| * @param ensembleSize |
| * Ensemble Size |
| * @param writeQuorumSize |
| * Write Quorum Size |
| * @return list of bookies for new ensemble. |
| * @throws BKNotEnoughBookiesException |
| */ |
| List<BookieSocketAddress> newEnsemble(int ensembleSize, int writeQuorumSize, |
| int ackQuorumSize, Map<String, byte[]> customMetadata) |
| throws BKNotEnoughBookiesException; |
| |
| /** |
| * Choose a bookie to replace bookie <i>bookieIdx</i> in <i>existingBookies</i>. |
| * @param existingBookies |
| * list of existing bookies. |
| * @param bookieIdx |
| * index of the bookie in the list to be replaced. |
| * @return the bookie to replace. |
| * @throws BKNotEnoughBookiesException |
| */ |
| BookieSocketAddress replaceBookie(int ensembleSize, int writeQuorumSize, int ackQuorumSize, |
| Map<String, byte[]> customMetadata, |
| List<BookieSocketAddress> existingBookies, int bookieIdx, |
| Set<BookieSocketAddress> excludeBookies) |
| throws BKNotEnoughBookiesException; |
| |
| |
| /** |
| * Quarantine <i>bookie</i> so it will not be preferred to be chosen for new ensembles. |
| * @param bookie |
| */ |
| void quarantineBookie(BookieSocketAddress bookie); |
| } |