| /* |
| * 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.vxquery.metadata; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.Reader; |
| import java.net.InetAddress; |
| import java.nio.ByteBuffer; |
| import java.nio.charset.StandardCharsets; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import org.apache.commons.io.FileUtils; |
| import org.apache.commons.io.filefilter.TrueFileFilter; |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.LocatedFileStatus; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.RemoteIterator; |
| import org.apache.hadoop.mapreduce.InputFormat; |
| import org.apache.hadoop.mapreduce.InputSplit; |
| import org.apache.hadoop.mapreduce.Job; |
| import org.apache.hadoop.mapreduce.RecordReader; |
| import org.apache.hadoop.mapreduce.TaskAttemptContext; |
| import org.apache.hadoop.mapreduce.lib.input.FileSplit; |
| import org.apache.hyracks.api.client.NodeControllerInfo; |
| import org.apache.hyracks.api.comm.IFrame; |
| import org.apache.hyracks.api.comm.IFrameFieldAppender; |
| import org.apache.hyracks.api.comm.VSizeFrame; |
| import org.apache.hyracks.api.context.IHyracksTaskContext; |
| import org.apache.hyracks.api.dataflow.IOperatorNodePushable; |
| import org.apache.hyracks.api.dataflow.value.IRecordDescriptorProvider; |
| import org.apache.hyracks.api.dataflow.value.RecordDescriptor; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.api.job.IOperatorDescriptorRegistry; |
| import org.apache.hyracks.data.std.util.ArrayBackedValueStorage; |
| import org.apache.hyracks.dataflow.common.comm.io.FrameFixedFieldTupleAppender; |
| import org.apache.hyracks.dataflow.common.comm.io.FrameTupleAccessor; |
| import org.apache.hyracks.dataflow.std.base.AbstractSingleActivityOperatorDescriptor; |
| import org.apache.hyracks.dataflow.std.base.AbstractUnaryInputUnaryOutputOperatorNodePushable; |
| import org.apache.hyracks.hdfs.ContextFactory; |
| import org.apache.hyracks.hdfs2.dataflow.FileSplitsFactory; |
| import org.apache.vxquery.context.DynamicContext; |
| import org.apache.vxquery.hdfs2.HDFSFunctions; |
| import org.apache.vxquery.jsonparser.JSONParser; |
| import org.apache.vxquery.xmlparser.ITreeNodeIdProvider; |
| import org.apache.vxquery.xmlparser.TreeNodeIdProvider; |
| import org.apache.vxquery.xmlparser.XMLParser; |
| |
| public class VXQueryCollectionOperatorDescriptor extends AbstractSingleActivityOperatorDescriptor { |
| private static final long serialVersionUID = 1L; |
| private short dataSourceId; |
| private short totalDataSources; |
| private String[] collectionPartitions; |
| private List<Integer> childSeq; |
| private List<Byte[]> valueSeq; |
| protected static final Logger LOGGER = Logger.getLogger(VXQueryCollectionOperatorDescriptor.class.getName()); |
| private HDFSFunctions hdfs; |
| private String tag; |
| private static final String START_TAG = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"; |
| private final String hdfsConf; |
| private final Map<String, NodeControllerInfo> nodeControllerInfos; |
| |
| public VXQueryCollectionOperatorDescriptor(IOperatorDescriptorRegistry spec, AbstractVXQueryDataSource ds, |
| RecordDescriptor rDesc, String hdfsConf, Map<String, NodeControllerInfo> nodeControllerInfos) { |
| super(spec, 1, 1); |
| collectionPartitions = ds.getPartitions(); |
| dataSourceId = (short) ds.getDataSourceId(); |
| totalDataSources = (short) ds.getTotalDataSources(); |
| childSeq = ds.getChildSeq(); |
| valueSeq = ds.getValueSeq(); |
| recordDescriptors[0] = rDesc; |
| this.tag = ds.getTag(); |
| this.hdfsConf = hdfsConf; |
| this.nodeControllerInfos = nodeControllerInfos; |
| } |
| |
| @Override |
| public IOperatorNodePushable createPushRuntime(IHyracksTaskContext ctx, |
| IRecordDescriptorProvider recordDescProvider, int partition, int nPartitions) throws HyracksDataException { |
| final FrameTupleAccessor fta = new FrameTupleAccessor( |
| recordDescProvider.getInputRecordDescriptor(getActivityId(), 0)); |
| final int fieldOutputCount = recordDescProvider.getOutputRecordDescriptor(getActivityId(), 0).getFieldCount(); |
| final IFrame frame = new VSizeFrame(ctx); |
| final IFrameFieldAppender appender = new FrameFixedFieldTupleAppender(fieldOutputCount); |
| final short partitionId = (short) ctx.getTaskAttemptId().getTaskId().getPartition(); |
| final ITreeNodeIdProvider nodeIdProvider = new TreeNodeIdProvider(partitionId, dataSourceId, totalDataSources); |
| final String nodeId = ctx.getJobletContext().getApplicationContext().getNodeId(); |
| final DynamicContext dCtx = (DynamicContext) ctx.getJobletContext().getGlobalJobData(); |
| final ArrayBackedValueStorage jsonAbvs = new ArrayBackedValueStorage(); |
| final String collectionName = collectionPartitions[partition % collectionPartitions.length]; |
| final XMLParser parser = new XMLParser(false, nodeIdProvider, nodeId, appender, childSeq, |
| dCtx.getStaticContext()); |
| final JSONParser jparser = new JSONParser(valueSeq); |
| |
| return new AbstractUnaryInputUnaryOutputOperatorNodePushable() { |
| @Override |
| public void open() throws HyracksDataException { |
| appender.reset(frame, true); |
| writer.open(); |
| hdfs = new HDFSFunctions(nodeControllerInfos, hdfsConf); |
| } |
| |
| @Override |
| public void nextFrame(ByteBuffer buffer) throws HyracksDataException { |
| fta.reset(buffer); |
| String collectionModifiedName = collectionName.replace("${nodeId}", nodeId); |
| |
| if (!collectionModifiedName.contains("hdfs:/")) { |
| File collectionDirectory = new File(collectionModifiedName); |
| // check if directory is in the local file system |
| if (collectionDirectory.exists()) { |
| // Go through each tuple. |
| if (collectionDirectory.isDirectory()) { |
| xmlAndJsonCollection(collectionDirectory); |
| } else { |
| throw new HyracksDataException("Invalid directory parameter (" + nodeId + ":" |
| + collectionDirectory.getAbsolutePath() + ") passed to collection."); |
| } |
| } |
| } else { |
| // Else check in HDFS file system |
| // Get instance of the HDFS filesystem |
| FileSystem fs = hdfs.getFileSystem(); |
| if (fs != null) { |
| collectionModifiedName = collectionModifiedName.replaceAll("hdfs:/", ""); |
| Path directory = new Path(collectionModifiedName); |
| Path xmlDocument; |
| if (tag != null) { |
| hdfs.setJob(directory.toString(), tag); |
| tag = "<" + tag + ">"; |
| Job job = hdfs.getJob(); |
| InputFormat inputFormat = hdfs.getinputFormat(); |
| try { |
| hdfs.scheduleSplits(); |
| ArrayList<Integer> schedule = hdfs |
| .getScheduleForNode(InetAddress.getLocalHost().getHostAddress()); |
| List<InputSplit> splits = hdfs.getSplits(); |
| List<FileSplit> fileSplits = new ArrayList<>(); |
| for (int i : schedule) { |
| fileSplits.add((FileSplit) splits.get(i)); |
| } |
| FileSplitsFactory splitsFactory = new FileSplitsFactory(fileSplits); |
| List<FileSplit> inputSplits = splitsFactory.getSplits(); |
| ContextFactory ctxFactory = new ContextFactory(); |
| int size = inputSplits.size(); |
| InputStream stream; |
| String value; |
| RecordReader reader; |
| TaskAttemptContext context; |
| for (int i = 0; i < size; i++) { |
| // read split |
| context = ctxFactory.createContext(job.getConfiguration(), i); |
| reader = inputFormat.createRecordReader(inputSplits.get(i), context); |
| reader.initialize(inputSplits.get(i), context); |
| while (reader.nextKeyValue()) { |
| value = reader.getCurrentValue().toString(); |
| // Split value if it contains more than |
| // one item with the tag |
| if (StringUtils.countMatches(value, tag) > 1) { |
| String[] items = value.split(tag); |
| for (String item : items) { |
| if (item.length() > 0) { |
| item = START_TAG + tag + item; |
| stream = new ByteArrayInputStream( |
| item.getBytes(StandardCharsets.UTF_8)); |
| parser.parseHDFSElements(stream, writer, fta, i); |
| stream.close(); |
| } |
| } |
| } else { |
| value = START_TAG + value; |
| // create an input stream to the |
| // file currently reading and send |
| // it to parser |
| stream = new ByteArrayInputStream(value.getBytes(StandardCharsets.UTF_8)); |
| parser.parseHDFSElements(stream, writer, fta, i); |
| stream.close(); |
| } |
| } |
| reader.close(); |
| } |
| |
| } catch (Exception e) { |
| throw new HyracksDataException(e); |
| } |
| } else { |
| try { |
| // check if the path exists and is a directory |
| if (fs.exists(directory) && fs.isDirectory(directory)) { |
| for (int tupleIndex = 0; tupleIndex < fta.getTupleCount(); ++tupleIndex) { |
| // read every file in the directory |
| RemoteIterator<LocatedFileStatus> it = fs.listFiles(directory, true); |
| while (it.hasNext()) { |
| xmlDocument = it.next().getPath(); |
| if (fs.isFile(xmlDocument)) { |
| if (LOGGER.isLoggable(Level.FINE)) { |
| LOGGER.fine( |
| "Starting to read XML document: " + xmlDocument.getName()); |
| } |
| // create an input stream to the |
| // file currently reading and |
| // send it to parser |
| InputStream in = fs.open(xmlDocument).getWrappedStream(); |
| parser.parseHDFSElements(in, writer, fta, tupleIndex); |
| in.close(); |
| } |
| } |
| } |
| } else { |
| throw new HyracksDataException("Invalid HDFS directory parameter (" + nodeId + ":" |
| + directory + ") passed to collection."); |
| } |
| } catch (Exception e) { |
| throw new HyracksDataException(e); |
| } |
| } |
| try { |
| fs.close(); |
| } catch (Exception e) { |
| throw new HyracksDataException(e); |
| } |
| } |
| } |
| } |
| |
| public void xmlAndJsonCollection(File directory) throws HyracksDataException { |
| Reader input; |
| for (int tupleIndex = 0; tupleIndex < fta.getTupleCount(); ++tupleIndex) { |
| Iterator<File> it = FileUtils.iterateFiles(directory, new VXQueryIOFileFilter(), |
| TrueFileFilter.INSTANCE); |
| while (it.hasNext()) { |
| File file = it.next(); |
| String fileName = file.getName().toLowerCase(); |
| if (fileName.endsWith(".xml")) { |
| if (LOGGER.isLoggable(Level.FINE)) { |
| LOGGER.fine("Starting to read XML document: " + file.getAbsolutePath()); |
| } |
| parser.parseElements(file, writer, tupleIndex); |
| } else if (fileName.endsWith(".json")) { |
| if (LOGGER.isLoggable(Level.FINE)) { |
| LOGGER.fine("Starting to read JSON document: " + file.getAbsolutePath()); |
| } |
| try { |
| jsonAbvs.reset(); |
| input = new InputStreamReader(new FileInputStream(file)); |
| jparser.parse(input, jsonAbvs, writer, appender); |
| } catch (FileNotFoundException e) { |
| throw new HyracksDataException(e.toString()); |
| } |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void fail() throws HyracksDataException { |
| writer.fail(); |
| } |
| |
| @Override |
| public void close() throws HyracksDataException { |
| // Check if needed? |
| if (appender.getTupleCount() > 0) { |
| appender.flush(writer); |
| } |
| writer.close(); |
| } |
| }; |
| } |
| } |
