一.创建server端
public class ManualDRPC {
private static final Logger LOG = LoggerFactory.getLogger(ManualDRPC.class);
public static void main(String[] args) throws AlreadyAliveException, InvalidTopologyException, AuthorizationException {
TopologyBuilder builder = new TopologyBuilder();
DRPCSpout spout = new DRPCSpout("add");
builder.setSpout("drpc", spout);
builder.setBolt("add", new AddBolt(),3).shuffleGrouping("drpc");
builder.setBolt("return", new ReturnResults(),3).shuffleGrouping("add");
Config conf = new Config();
StormSubmitter.submitTopology("ManualDRPC", conf, builder.createTopology());
LOG.warn("==================================================");
LOG.warn("the topology {} is submitted.","ManualDRPC");
LOG.warn("==================================================");
}
public static class AddBolt extends BaseBasicBolt{
@Override
public void execute(Tuple input, BasicOutputCollector collector) {
Object returnInfo = input.getValue(1);
String params = input.getString(0);
String[] numbers = params.split(",");
String conversValue = String.valueOf(Integer.parseInt(numbers[0]) + Integer.parseInt(numbers[1]));
collector.emit(new Values(conversValue,returnInfo));
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
declarer.declare(new Fields("result","return-info"));
}
}
}
二.client端
public class ManualClientDRPC {
private static final Logger LOG = LoggerFactory.getLogger(ManualClientDRPC.class);
public static void main(String[] args) {
Config conf = new Config();
conf.put("storm.thrift.transport", "org.apache.storm.security.auth.plain.PlainSaslTransportPlugin");
conf.put(Config.STORM_NIMBUS_RETRY_TIMES, 3);
conf.put(Config.STORM_NIMBUS_RETRY_INTERVAL, 10);
conf.put(Config.STORM_NIMBUS_RETRY_INTERVAL_CEILING, 20);
try {
DRPCClient client = new DRPCClient(conf, "master", 3777);
String result = client.execute("add", "1,2");
LOG.info("============== result:{}",result);
} catch (Exception e) {
LOG.info("ERR");
}
}
}