/*
src/com/lightboxtechnologies/spectrum/FsEntryHBaseInputFormat.java
Copyright 2011, Lightbox Technologies, Inc
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 com.lightboxtechnologies.spectrum;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.codec.DecoderException;
import org.apache.hadoop.conf.Configurable;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.RecordReader;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.apache.hadoop.mapreduce.InputFormat;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.hbase.mapreduce.TableInputFormatBase;
import org.apache.hadoop.hbase.mapreduce.TableInputFormat;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.io.*;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.*;
import org.apache.hadoop.hbase.filter.RowFilter;
import org.apache.hadoop.hbase.filter.CompareFilter;
import java.util.Date;
import java.util.Map;
import java.util.Set;
import java.util.List;
import java.io.IOException;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import com.lightboxtechnologies.io.IOUtils;
import org.sleuthkit.hadoop.SKMapper;
public class FsEntryHBaseInputFormat extends InputFormat implements Configurable {
private byte[] ImageID;
private TableInputFormat TblInput;
private static final Log LOG = LogFactory.getLog(FsEntryHBaseInputFormat.class);
public FsEntryHBaseInputFormat() {
TblInput = new TableInputFormat();
}
static public void setupJob(Job job, String deviceID) throws IOException, DecoderException {
Scan scan = new Scan();
scan.addFamily(HBaseTables.ENTRIES_COLFAM_B);
/* if (deviceID != null && deviceID.length() > 0) {
byte[] imgID = Hex.decodeHex(deviceID.toCharArray());
FsEntryRowFilter keyFilt = new FsEntryRowFilter(imgID);
RowFilter filt = new RowFilter(CompareFilter.CompareOp.EQUAL, keyFilt);
scan.setFilter(filt);
}*/
HBaseConfiguration.addHbaseResources(job.getConfiguration());
job.getConfiguration().set(TableInputFormat.INPUT_TABLE, HBaseTables.ENTRIES_TBL);
job.getConfiguration().set(TableInputFormat.SCAN, convertScanToString(scan));
job.getConfiguration().set(SKMapper.ID_KEY, deviceID);
LOG.info("hbase.zookeeper.quorum:" + job.getConfiguration().get("hbase.zookeeper.quorum"));
}
static String convertScanToString(Scan scan) throws IOException {
final ByteArrayOutputStream out = new ByteArrayOutputStream();
DataOutputStream dos = null;
try {
dos = new DataOutputStream(out);
scan.write(dos);
dos.close();
return Base64.encodeBytes(out.toByteArray());
}
finally {
IOUtils.closeQuietly(dos);
}
}
public Configuration getConf() {
return TblInput.getConf();
}
public void setConf(Configuration c) {
String tblname = c.get(TableInputFormat.INPUT_TABLE);
if (tblname != null) {
LOG.info("Table name from conf was: " + tblname);
}
else {
LOG.error("Table name was null");
}
Configuration conf = HBaseConfiguration.create(c);
LOG.info("hbase.zookeeper.quorum:" + conf.get("hbase.zookeeper.quorum"));
TblInput.setConf(conf);
String id = conf.get(SKMapper.ID_KEY);
if (id != null) {
LOG.info("scan is for image id " + id);
try {
ImageID = Hex.decodeHex(id.toCharArray());
}
catch (DecoderException e) {
throw new RuntimeException(e);
}
}
}
public List<InputSplit> getSplits(JobContext ctx) throws IOException {
return TblInput.getSplits(ctx);
}
public RecordReader<ImmutableHexWritable, FsEntry> createRecordReader(InputSplit split, TaskAttemptContext ctx) throws IOException {
RecordReader<ImmutableHexWritable,FsEntry> outer = null;
RecordReader<ImmutableBytesWritable,Result> inner = null;
try {
inner = TblInput.createRecordReader(split, ctx);
outer = new FsEntryRecordReader(inner, ImageID);
return outer;
}
finally {
// make sure inner is closed if outer creation throws
if (outer == null) {
IOUtils.closeQuietly(inner);
}
}
}
public static class FsEntryRecordReader extends RecordReader<ImmutableHexWritable, FsEntry> {
private final RecordReader<ImmutableBytesWritable, Result> TblReader;
private Result Cur;
private final ImmutableHexWritable Key;
private final FsEntry Value;
private FsEntryRowFilter Filter;
public FsEntryRecordReader(RecordReader<ImmutableBytesWritable, Result> rr, byte[] imgID) {
TblReader = rr;
Key = new ImmutableHexWritable();
Value = new FsEntry();
if (imgID != null && imgID.length > 0) {
Filter = new FsEntryRowFilter(imgID);
}
}
public void close() throws IOException {
TblReader.close();
}
public ImmutableHexWritable getCurrentKey() throws IOException, InterruptedException {
Cur = TblReader.getCurrentValue();
Key.set(Cur.getRow(), 0, Cur.getRow().length);
return Key;
}
public FsEntry getCurrentValue() throws IOException, InterruptedException {
final Map<byte[], byte[]> family = Cur.getFamilyMap(HBaseTables.ENTRIES_COLFAM_B);
FsEntryHBaseCommon.populate(family, Value, Value.getStreams());
return Value;
}
public float getProgress() throws IOException, InterruptedException {
return TblReader.getProgress();
}
public void initialize(InputSplit split, TaskAttemptContext ctx) throws IOException, InterruptedException {
TblReader.initialize(split, ctx);
Value.setFileSystem(FileSystem.get(ctx.getConfiguration()));
}
public boolean nextKeyValue() throws IOException, InterruptedException {
while (TblReader.nextKeyValue()) {
Cur = TblReader.getCurrentValue();
if (Filter != null && Filter.compareTo(Cur.getRow()) != 0) {
continue;
}
return true;
}
return false;
}
}
}