| /** |
| * 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.metron.dataloads.nonbulk.flatfile.importer; |
| |
| import com.google.common.collect.ImmutableList; |
| import org.apache.commons.io.IOUtils; |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.metron.common.utils.SerDeUtils; |
| import org.apache.metron.dataloads.extractor.ExtractorCapabilities; |
| import org.apache.metron.dataloads.extractor.ExtractorHandler; |
| import org.apache.metron.dataloads.extractor.StatefulExtractor; |
| import org.apache.metron.dataloads.nonbulk.flatfile.SummarizeOptions; |
| import org.apache.metron.dataloads.nonbulk.flatfile.writer.InvalidWriterOutput; |
| import org.apache.metron.dataloads.nonbulk.flatfile.writer.Writer; |
| import org.apache.metron.dataloads.nonbulk.flatfile.writer.Writers; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.*; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentLinkedDeque; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| public class LocalSummarizer extends AbstractLocalImporter<SummarizeOptions, LocalSummarizer.SummarizationState> { |
| List<SummarizationState> stateList; |
| |
| public LocalSummarizer() { |
| stateList = Collections.synchronizedList(new ArrayList<>()); |
| } |
| |
| public static class SummarizationState { |
| AtomicReference<Object> state; |
| StatefulExtractor extractor; |
| public SummarizationState(StatefulExtractor extractor, Object initState) { |
| this.state = new AtomicReference<>(initState); |
| this.extractor = extractor; |
| } |
| |
| public AtomicReference<Object> getState() { |
| return state; |
| } |
| |
| public StatefulExtractor getExtractor() { |
| return extractor; |
| } |
| |
| } |
| |
| @Override |
| protected boolean isQuiet(EnumMap<SummarizeOptions, Optional<Object>> config) { |
| return (boolean) config.getOrDefault(SummarizeOptions.QUIET, Optional.of(false)).get(); |
| } |
| |
| @Override |
| protected int batchSize(EnumMap<SummarizeOptions, Optional<Object>> config) { |
| return (int) config.getOrDefault(SummarizeOptions.BATCH_SIZE, Optional.of(1)).get(); |
| } |
| |
| @Override |
| protected int numThreads(EnumMap<SummarizeOptions, Optional<Object>> config, ExtractorHandler handler) { |
| if(handler.getExtractor().getCapabilities().contains(ExtractorCapabilities.MERGEABLE)) { |
| return (int) config.get(SummarizeOptions.NUM_THREADS).get(); |
| } |
| else { |
| //force one thread in the case it's not mergeable. |
| return 1; |
| } |
| } |
| |
| @Override |
| protected void validateState(EnumMap<SummarizeOptions, Optional<Object>> config, ExtractorHandler handler) { |
| if(!(handler.getExtractor() instanceof StatefulExtractor)){ |
| throw new IllegalStateException("Extractor must be a stateful extractor and " + handler.getExtractor().getClass().getName() + " is not."); |
| } |
| assertOption(config, SummarizeOptions.OUTPUT); |
| if(!handler.getExtractor().getCapabilities().contains(ExtractorCapabilities.STATEFUL)) { |
| throw new IllegalStateException("Unable to operate on a non-stateful extractor. " + |
| "If you have not specified \"stateUpdate\" in your Extractor config, there is nothing to do here and nothing will be written."); |
| } |
| |
| } |
| |
| @Override |
| protected ThreadLocal<SummarizationState> createState(EnumMap<SummarizeOptions, Optional<Object>> config, Configuration hadoopConfig, ExtractorHandler handler) { |
| final StatefulExtractor extractor = (StatefulExtractor)handler.getExtractor(); |
| return ThreadLocal.withInitial(() -> { |
| Object initState = extractor.initializeState(handler.getConfig()); |
| SummarizationState ret = new SummarizationState(extractor, initState); |
| stateList.add(ret); |
| return ret; |
| }); |
| } |
| |
| |
| @Override |
| protected void extract(SummarizationState state, String line) throws IOException { |
| state.getExtractor().extract(line, state.getState()); |
| } |
| |
| @Override |
| public void importData(EnumMap<SummarizeOptions, Optional<Object>> config, ExtractorHandler handler, Configuration hadoopConfig) throws IOException, InvalidWriterOutput { |
| Writer writer = (Writer) config.get(SummarizeOptions.OUTPUT_MODE).get(); |
| Optional<String> fileName = Optional.ofNullable((String)config.get(SummarizeOptions.OUTPUT).orElse(null)); |
| writer.validate(fileName, hadoopConfig); |
| super.importData(config, handler, hadoopConfig); |
| StatefulExtractor extractor = (StatefulExtractor) handler.getExtractor(); |
| Object finalState = null; |
| if(stateList.size() == 1) { |
| finalState = stateList.get(0).getState().get(); |
| } |
| else if(stateList.size() > 1) { |
| List<Object> states = new ArrayList<>(); |
| for(SummarizationState s : stateList) { |
| states.add(s.getState().get()); |
| } |
| finalState = extractor.mergeStates(states); |
| } |
| writer.write(finalState, fileName, hadoopConfig); |
| } |
| |
| @Override |
| protected List<String> getInputs(EnumMap<SummarizeOptions, Optional<Object>> config) { |
| Object o = config.get(SummarizeOptions.INPUT).get(); |
| if(o == null) { |
| return new ArrayList<>(); |
| } |
| if(o instanceof String) { |
| return ImmutableList.of((String)o); |
| } |
| return (List<String>) config.get(SummarizeOptions.INPUT).get(); |
| } |
| } |