Java tutorial
/* * 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 com.intel.hibench.stormbench.trident.functions; import com.google.common.collect.ImmutableMap; import com.intel.hibench.common.streaming.UserVisit; import com.intel.hibench.common.streaming.UserVisitParser; import org.apache.storm.trident.operation.BaseFunction; import org.apache.storm.trident.operation.TridentCollector; import org.apache.storm.trident.tuple.TridentTuple; import org.apache.storm.tuple.Values; public class Parser extends BaseFunction { @Override public void execute(TridentTuple tuple, TridentCollector collector) { ImmutableMap<String, String> kv = (ImmutableMap<String, String>) tuple.getValue(0); String key = kv.keySet().iterator().next(); Long startTime = Long.parseLong(key); UserVisit uv = UserVisitParser.parse(kv.get(key)); collector.emit(new Values(uv.getIp(), startTime)); } }