Java tutorial
/* * Copyright 2014 WANdisco * * WANdisco 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 c5db.replication; import c5db.interfaces.replication.QuorumConfiguration; import c5db.replication.generated.LogEntry; import com.google.common.collect.Lists; import io.netty.util.CharsetUtil; import java.nio.ByteBuffer; import java.util.ArrayList; import java.util.List; import static c5db.log.ReplicatorLogGenericTestUtil.someData; public class ReplicatorTestUtil { public static LogEntry makeProtostuffEntry(long index, long term, String stringData) { return makeProtostuffEntry(index, term, ByteBuffer.wrap(stringData.getBytes(CharsetUtil.UTF_8))); } public static LogEntry makeProtostuffEntry(long index, long term, ByteBuffer data) { return new LogEntry(term, index, Lists.newArrayList(data), null); } public static LogEntry makeConfigurationEntry(long index, long term, QuorumConfiguration configuration) { return new LogEntry(term, index, new ArrayList<>(), configuration.toProtostuff()); } public static LogSequenceBuilder entries() { return new LogSequenceBuilder(); } public static class LogSequenceBuilder { private final List<LogEntry> logSequence = new ArrayList<>(); private long term = 1; public LogSequenceBuilder term(long term) { this.term = term; return this; } public LogSequenceBuilder indexes(long... indexes) { for (long index : indexes) { logSequence.add(makeProtostuffEntry(index, term, someData())); } return this; } public LogSequenceBuilder configurationAndIndex(QuorumConfiguration configuration, long index) { logSequence.add(new LogEntry(term, index, new ArrayList<>(), configuration.toProtostuff())); return this; } // Alternate name for code clarity in certain places public LogSequenceBuilder seqNums(long... seqNums) { return indexes(seqNums); } // Alternate name for code clarity in certain places public LogSequenceBuilder configurationAndSeqNum(QuorumConfiguration configuration, long seqNum) { return configurationAndIndex(configuration, seqNum); } public List<LogEntry> build() { return logSequence; } } }