Java tutorial
/** * Copyright 2016 Nikita Koksharov * * Licensed 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.redisson.client.protocol.decoder; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.redisson.client.handler.State; import org.redisson.client.protocol.Decoder; import org.redisson.cluster.ClusterNodeInfo; import org.redisson.cluster.ClusterSlotRange; import io.netty.buffer.ByteBuf; import io.netty.util.CharsetUtil; /** * * @author Nikita Koksharov * */ public class ClusterNodesDecoder implements Decoder<List<ClusterNodeInfo>> { @Override public List<ClusterNodeInfo> decode(ByteBuf buf, State state) throws IOException { String response = buf.toString(CharsetUtil.UTF_8); List<ClusterNodeInfo> nodes = new ArrayList<ClusterNodeInfo>(); for (String nodeInfo : response.split("\n")) { ClusterNodeInfo node = new ClusterNodeInfo(nodeInfo); String[] params = nodeInfo.split(" "); String nodeId = params[0]; node.setNodeId(nodeId); String addr = params[1]; node.setAddress(addr); String flags = params[2]; for (String flag : flags.split(",")) { String flagValue = flag.toUpperCase().replaceAll("\\?", ""); node.addFlag(ClusterNodeInfo.Flag.valueOf(flagValue)); } String slaveOf = params[3]; if (!"-".equals(slaveOf)) { node.setSlaveOf(slaveOf); } if (params.length > 8) { for (int i = 0; i < params.length - 8; i++) { String slots = params[i + 8]; if (slots.indexOf("-<-") != -1 || slots.indexOf("->-") != -1) { continue; } String[] parts = slots.split("-"); if (parts.length == 1) { node.addSlotRange( new ClusterSlotRange(Integer.valueOf(parts[0]), Integer.valueOf(parts[0]))); } else if (parts.length == 2) { node.addSlotRange( new ClusterSlotRange(Integer.valueOf(parts[0]), Integer.valueOf(parts[1]))); } } } nodes.add(node); } return nodes; } }