001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.kahadb.journal;
018
019 import java.io.File;
020 import java.io.FilenameFilter;
021 import java.io.IOException;
022 import java.io.UnsupportedEncodingException;
023 import java.util.ArrayList;
024 import java.util.Collections;
025 import java.util.HashMap;
026 import java.util.Iterator;
027 import java.util.LinkedHashMap;
028 import java.util.List;
029 import java.util.Map;
030 import java.util.Set;
031 import java.util.Timer;
032 import java.util.TimerTask;
033 import java.util.TreeMap;
034 import java.util.concurrent.ConcurrentHashMap;
035 import java.util.concurrent.atomic.AtomicLong;
036 import java.util.concurrent.atomic.AtomicReference;
037 import java.util.zip.Adler32;
038 import java.util.zip.Checksum;
039 import org.slf4j.Logger;
040 import org.slf4j.LoggerFactory;
041 import org.apache.kahadb.journal.DataFileAppender.WriteCommand;
042 import org.apache.kahadb.journal.DataFileAppender.WriteKey;
043 import org.apache.kahadb.util.ByteSequence;
044 import org.apache.kahadb.util.DataByteArrayInputStream;
045 import org.apache.kahadb.util.DataByteArrayOutputStream;
046 import org.apache.kahadb.util.LinkedNodeList;
047 import org.apache.kahadb.util.SchedulerTimerTask;
048 import org.apache.kahadb.util.Sequence;
049
050 /**
051 * Manages DataFiles
052 *
053 *
054 */
055 public class Journal {
056
057 private static final int MAX_BATCH_SIZE = 32*1024*1024;
058
059 // ITEM_HEAD_SPACE = length + type+ reserved space + SOR
060 public static final int RECORD_HEAD_SPACE = 4 + 1;
061
062 public static final byte USER_RECORD_TYPE = 1;
063 public static final byte BATCH_CONTROL_RECORD_TYPE = 2;
064 // Batch Control Item holds a 4 byte size of the batch and a 8 byte checksum of the batch.
065 public static final byte[] BATCH_CONTROL_RECORD_MAGIC = bytes("WRITE BATCH");
066 public static final int BATCH_CONTROL_RECORD_SIZE = RECORD_HEAD_SPACE+BATCH_CONTROL_RECORD_MAGIC.length+4+8;
067 public static final byte[] BATCH_CONTROL_RECORD_HEADER = createBatchControlRecordHeader();
068
069 private static byte[] createBatchControlRecordHeader() {
070 try {
071 DataByteArrayOutputStream os = new DataByteArrayOutputStream();
072 os.writeInt(BATCH_CONTROL_RECORD_SIZE);
073 os.writeByte(BATCH_CONTROL_RECORD_TYPE);
074 os.write(BATCH_CONTROL_RECORD_MAGIC);
075 ByteSequence sequence = os.toByteSequence();
076 sequence.compact();
077 return sequence.getData();
078 } catch (IOException e) {
079 throw new RuntimeException("Could not create batch control record header.");
080 }
081 }
082
083 public static final String DEFAULT_DIRECTORY = ".";
084 public static final String DEFAULT_ARCHIVE_DIRECTORY = "data-archive";
085 public static final String DEFAULT_FILE_PREFIX = "db-";
086 public static final String DEFAULT_FILE_SUFFIX = ".log";
087 public static final int DEFAULT_MAX_FILE_LENGTH = 1024 * 1024 * 32;
088 public static final int DEFAULT_CLEANUP_INTERVAL = 1000 * 30;
089 public static final int PREFERED_DIFF = 1024 * 512;
090 public static final int DEFAULT_MAX_WRITE_BATCH_SIZE = 1024 * 1024 * 4;
091
092 private static final Logger LOG = LoggerFactory.getLogger(Journal.class);
093
094 protected final Map<WriteKey, WriteCommand> inflightWrites = new ConcurrentHashMap<WriteKey, WriteCommand>();
095
096 protected File directory = new File(DEFAULT_DIRECTORY);
097 protected File directoryArchive = new File(DEFAULT_ARCHIVE_DIRECTORY);
098 protected String filePrefix = DEFAULT_FILE_PREFIX;
099 protected String fileSuffix = DEFAULT_FILE_SUFFIX;
100 protected boolean started;
101
102 protected int maxFileLength = DEFAULT_MAX_FILE_LENGTH;
103 protected int preferedFileLength = DEFAULT_MAX_FILE_LENGTH - PREFERED_DIFF;
104 protected int writeBatchSize = DEFAULT_MAX_WRITE_BATCH_SIZE;
105
106 protected DataFileAppender appender;
107 protected DataFileAccessorPool accessorPool;
108
109 protected Map<Integer, DataFile> fileMap = new HashMap<Integer, DataFile>();
110 protected Map<File, DataFile> fileByFileMap = new LinkedHashMap<File, DataFile>();
111 protected LinkedNodeList<DataFile> dataFiles = new LinkedNodeList<DataFile>();
112
113 protected final AtomicReference<Location> lastAppendLocation = new AtomicReference<Location>();
114 protected Runnable cleanupTask;
115 protected AtomicLong totalLength = new AtomicLong();
116 protected boolean archiveDataLogs;
117 private ReplicationTarget replicationTarget;
118 protected boolean checksum;
119 protected boolean checkForCorruptionOnStartup;
120 private Timer timer;
121
122
123 public synchronized void start() throws IOException {
124 if (started) {
125 return;
126 }
127
128 long start = System.currentTimeMillis();
129 accessorPool = new DataFileAccessorPool(this);
130 started = true;
131 preferedFileLength = Math.max(PREFERED_DIFF, getMaxFileLength() - PREFERED_DIFF);
132
133 appender = new DataFileAppender(this);
134
135 File[] files = directory.listFiles(new FilenameFilter() {
136 public boolean accept(File dir, String n) {
137 return dir.equals(directory) && n.startsWith(filePrefix) && n.endsWith(fileSuffix);
138 }
139 });
140
141 if (files != null) {
142 for (int i = 0; i < files.length; i++) {
143 try {
144 File file = files[i];
145 String n = file.getName();
146 String numStr = n.substring(filePrefix.length(), n.length()-fileSuffix.length());
147 int num = Integer.parseInt(numStr);
148 DataFile dataFile = new DataFile(file, num, preferedFileLength);
149 fileMap.put(dataFile.getDataFileId(), dataFile);
150 totalLength.addAndGet(dataFile.getLength());
151 } catch (NumberFormatException e) {
152 // Ignore file that do not match the pattern.
153 }
154 }
155
156 // Sort the list so that we can link the DataFiles together in the
157 // right order.
158 List<DataFile> l = new ArrayList<DataFile>(fileMap.values());
159 Collections.sort(l);
160 for (DataFile df : l) {
161 if (df.getLength() == 0) {
162 // possibly the result of a previous failed write
163 LOG.info("ignoring zero length, partially initialised journal data file: " + df);
164 continue;
165 }
166 dataFiles.addLast(df);
167 fileByFileMap.put(df.getFile(), df);
168
169 if( isCheckForCorruptionOnStartup() ) {
170 lastAppendLocation.set(recoveryCheck(df));
171 }
172 }
173 }
174
175 getCurrentWriteFile();
176
177 if( lastAppendLocation.get()==null ) {
178 DataFile df = dataFiles.getTail();
179 lastAppendLocation.set(recoveryCheck(df));
180 }
181
182 cleanupTask = new Runnable() {
183 public void run() {
184 cleanup();
185 }
186 };
187 this.timer = new Timer("KahaDB Scheduler", true);
188 TimerTask task = new SchedulerTimerTask(cleanupTask);
189 this.timer.scheduleAtFixedRate(task, DEFAULT_CLEANUP_INTERVAL,DEFAULT_CLEANUP_INTERVAL);
190 long end = System.currentTimeMillis();
191 LOG.trace("Startup took: "+(end-start)+" ms");
192 }
193
194 private static byte[] bytes(String string) {
195 try {
196 return string.getBytes("UTF-8");
197 } catch (UnsupportedEncodingException e) {
198 throw new RuntimeException(e);
199 }
200 }
201
202 protected Location recoveryCheck(DataFile dataFile) throws IOException {
203 Location location = new Location();
204 location.setDataFileId(dataFile.getDataFileId());
205 location.setOffset(0);
206
207 DataFileAccessor reader = accessorPool.openDataFileAccessor(dataFile);
208 try {
209 while( true ) {
210 int size = checkBatchRecord(reader, location.getOffset());
211 if ( size>=0 ) {
212 location.setOffset(location.getOffset()+BATCH_CONTROL_RECORD_SIZE+size);
213 } else {
214
215 // Perhaps it's just some corruption... scan through the file to find the next valid batch record. We
216 // may have subsequent valid batch records.
217 int nextOffset = findNextBatchRecord(reader, location.getOffset()+1);
218 if( nextOffset >=0 ) {
219 Sequence sequence = new Sequence(location.getOffset(), nextOffset - 1);
220 LOG.info("Corrupt journal records found in '"+dataFile.getFile()+"' between offsets: "+sequence);
221 dataFile.corruptedBlocks.add(sequence);
222 location.setOffset(nextOffset);
223 } else {
224 break;
225 }
226 }
227 }
228
229 } catch (IOException e) {
230 } finally {
231 accessorPool.closeDataFileAccessor(reader);
232 }
233
234 int existingLen = dataFile.getLength();
235 dataFile.setLength(location.getOffset());
236 if (existingLen > dataFile.getLength()) {
237 totalLength.addAndGet(dataFile.getLength() - existingLen);
238 }
239
240 if( !dataFile.corruptedBlocks.isEmpty() ) {
241 // Is the end of the data file corrupted?
242 if( dataFile.corruptedBlocks.getTail().getLast()+1 == location.getOffset() ) {
243 dataFile.setLength((int) dataFile.corruptedBlocks.removeLastSequence().getFirst());
244 }
245 }
246
247 return location;
248 }
249
250 private int findNextBatchRecord(DataFileAccessor reader, int offset) throws IOException {
251 ByteSequence header = new ByteSequence(BATCH_CONTROL_RECORD_HEADER);
252 byte data[] = new byte[1024*4];
253 ByteSequence bs = new ByteSequence(data, 0, reader.read(offset, data));
254
255 int pos = 0;
256 while( true ) {
257 pos = bs.indexOf(header, pos);
258 if( pos >= 0 ) {
259 return offset+pos;
260 } else {
261 // need to load the next data chunck in..
262 if( bs.length != data.length ) {
263 // If we had a short read then we were at EOF
264 return -1;
265 }
266 offset += bs.length-BATCH_CONTROL_RECORD_HEADER.length;
267 bs = new ByteSequence(data, 0, reader.read(offset, data));
268 pos=0;
269 }
270 }
271 }
272
273
274 public int checkBatchRecord(DataFileAccessor reader, int offset) throws IOException {
275 byte controlRecord[] = new byte[BATCH_CONTROL_RECORD_SIZE];
276 DataByteArrayInputStream controlIs = new DataByteArrayInputStream(controlRecord);
277
278 reader.readFully(offset, controlRecord);
279
280 // Assert that it's a batch record.
281 for( int i=0; i < BATCH_CONTROL_RECORD_HEADER.length; i++ ) {
282 if( controlIs.readByte() != BATCH_CONTROL_RECORD_HEADER[i] ) {
283 return -1;
284 }
285 }
286
287 int size = controlIs.readInt();
288 if( size > MAX_BATCH_SIZE ) {
289 return -1;
290 }
291
292 if( isChecksum() ) {
293
294 long expectedChecksum = controlIs.readLong();
295 if( expectedChecksum == 0 ) {
296 // Checksuming was not enabled when the record was stored.
297 // we can't validate the record :(
298 return size;
299 }
300
301 byte data[] = new byte[size];
302 reader.readFully(offset+BATCH_CONTROL_RECORD_SIZE, data);
303
304 Checksum checksum = new Adler32();
305 checksum.update(data, 0, data.length);
306
307 if( expectedChecksum!=checksum.getValue() ) {
308 return -1;
309 }
310
311 }
312 return size;
313 }
314
315
316 void addToTotalLength(int size) {
317 totalLength.addAndGet(size);
318 }
319
320
321 synchronized DataFile getCurrentWriteFile() throws IOException {
322 if (dataFiles.isEmpty()) {
323 rotateWriteFile();
324 }
325 return dataFiles.getTail();
326 }
327
328 synchronized DataFile rotateWriteFile() {
329 int nextNum = !dataFiles.isEmpty() ? dataFiles.getTail().getDataFileId().intValue() + 1 : 1;
330 File file = getFile(nextNum);
331 DataFile nextWriteFile = new DataFile(file, nextNum, preferedFileLength);
332 // actually allocate the disk space
333 fileMap.put(nextWriteFile.getDataFileId(), nextWriteFile);
334 fileByFileMap.put(file, nextWriteFile);
335 dataFiles.addLast(nextWriteFile);
336 return nextWriteFile;
337 }
338
339 public File getFile(int nextNum) {
340 String fileName = filePrefix + nextNum + fileSuffix;
341 File file = new File(directory, fileName);
342 return file;
343 }
344
345 synchronized DataFile getDataFile(Location item) throws IOException {
346 Integer key = Integer.valueOf(item.getDataFileId());
347 DataFile dataFile = fileMap.get(key);
348 if (dataFile == null) {
349 LOG.error("Looking for key " + key + " but not found in fileMap: " + fileMap);
350 throw new IOException("Could not locate data file " + getFile(item.getDataFileId()));
351 }
352 return dataFile;
353 }
354
355 synchronized File getFile(Location item) throws IOException {
356 Integer key = Integer.valueOf(item.getDataFileId());
357 DataFile dataFile = fileMap.get(key);
358 if (dataFile == null) {
359 LOG.error("Looking for key " + key + " but not found in fileMap: " + fileMap);
360 throw new IOException("Could not locate data file " + getFile(item.getDataFileId()));
361 }
362 return dataFile.getFile();
363 }
364
365 private DataFile getNextDataFile(DataFile dataFile) {
366 return dataFile.getNext();
367 }
368
369 public synchronized void close() throws IOException {
370 if (!started) {
371 return;
372 }
373 if (this.timer != null) {
374 this.timer.cancel();
375 }
376 accessorPool.close();
377 appender.close();
378 fileMap.clear();
379 fileByFileMap.clear();
380 dataFiles.clear();
381 lastAppendLocation.set(null);
382 started = false;
383 }
384
385 synchronized void cleanup() {
386 if (accessorPool != null) {
387 accessorPool.disposeUnused();
388 }
389 }
390
391 public synchronized boolean delete() throws IOException {
392
393 // Close all open file handles...
394 appender.close();
395 accessorPool.close();
396
397 boolean result = true;
398 for (Iterator<DataFile> i = fileMap.values().iterator(); i.hasNext();) {
399 DataFile dataFile = i.next();
400 totalLength.addAndGet(-dataFile.getLength());
401 result &= dataFile.delete();
402 }
403 fileMap.clear();
404 fileByFileMap.clear();
405 lastAppendLocation.set(null);
406 dataFiles = new LinkedNodeList<DataFile>();
407
408 // reopen open file handles...
409 accessorPool = new DataFileAccessorPool(this);
410 appender = new DataFileAppender(this);
411 return result;
412 }
413
414 public synchronized void removeDataFiles(Set<Integer> files) throws IOException {
415 for (Integer key : files) {
416 // Can't remove the data file (or subsequent files) that is currently being written to.
417 if( key >= lastAppendLocation.get().getDataFileId() ) {
418 continue;
419 }
420 DataFile dataFile = fileMap.get(key);
421 if( dataFile!=null ) {
422 forceRemoveDataFile(dataFile);
423 }
424 }
425 }
426
427 private synchronized void forceRemoveDataFile(DataFile dataFile) throws IOException {
428 accessorPool.disposeDataFileAccessors(dataFile);
429 fileByFileMap.remove(dataFile.getFile());
430 fileMap.remove(dataFile.getDataFileId());
431 totalLength.addAndGet(-dataFile.getLength());
432 dataFile.unlink();
433 if (archiveDataLogs) {
434 dataFile.move(getDirectoryArchive());
435 LOG.debug("moved data file " + dataFile + " to " + getDirectoryArchive());
436 } else {
437 if ( dataFile.delete() ) {
438 LOG.debug("Discarded data file " + dataFile);
439 } else {
440 LOG.warn("Failed to discard data file " + dataFile.getFile());
441 }
442 }
443 }
444
445 /**
446 * @return the maxFileLength
447 */
448 public int getMaxFileLength() {
449 return maxFileLength;
450 }
451
452 /**
453 * @param maxFileLength the maxFileLength to set
454 */
455 public void setMaxFileLength(int maxFileLength) {
456 this.maxFileLength = maxFileLength;
457 }
458
459 @Override
460 public String toString() {
461 return directory.toString();
462 }
463
464 public synchronized void appendedExternally(Location loc, int length) throws IOException {
465 DataFile dataFile = null;
466 if( dataFiles.getTail().getDataFileId() == loc.getDataFileId() ) {
467 // It's an update to the current log file..
468 dataFile = dataFiles.getTail();
469 dataFile.incrementLength(length);
470 } else if( dataFiles.getTail().getDataFileId()+1 == loc.getDataFileId() ) {
471 // It's an update to the next log file.
472 int nextNum = loc.getDataFileId();
473 File file = getFile(nextNum);
474 dataFile = new DataFile(file, nextNum, preferedFileLength);
475 // actually allocate the disk space
476 fileMap.put(dataFile.getDataFileId(), dataFile);
477 fileByFileMap.put(file, dataFile);
478 dataFiles.addLast(dataFile);
479 } else {
480 throw new IOException("Invalid external append.");
481 }
482 }
483
484 public synchronized Location getNextLocation(Location location) throws IOException, IllegalStateException {
485
486 Location cur = null;
487 while (true) {
488 if (cur == null) {
489 if (location == null) {
490 DataFile head = dataFiles.getHead();
491 if( head == null ) {
492 return null;
493 }
494 cur = new Location();
495 cur.setDataFileId(head.getDataFileId());
496 cur.setOffset(0);
497 } else {
498 // Set to the next offset..
499 if (location.getSize() == -1) {
500 cur = new Location(location);
501 } else {
502 cur = new Location(location);
503 cur.setOffset(location.getOffset() + location.getSize());
504 }
505 }
506 } else {
507 cur.setOffset(cur.getOffset() + cur.getSize());
508 }
509
510 DataFile dataFile = getDataFile(cur);
511
512 // Did it go into the next file??
513 if (dataFile.getLength() <= cur.getOffset()) {
514 dataFile = getNextDataFile(dataFile);
515 if (dataFile == null) {
516 return null;
517 } else {
518 cur.setDataFileId(dataFile.getDataFileId().intValue());
519 cur.setOffset(0);
520 }
521 }
522
523 // Load in location size and type.
524 DataFileAccessor reader = accessorPool.openDataFileAccessor(dataFile);
525 try {
526 reader.readLocationDetails(cur);
527 } finally {
528 accessorPool.closeDataFileAccessor(reader);
529 }
530
531 if (cur.getType() == 0) {
532 return null;
533 } else if (cur.getType() == USER_RECORD_TYPE) {
534 // Only return user records.
535 return cur;
536 }
537 }
538 }
539
540 public synchronized Location getNextLocation(File file, Location lastLocation, boolean thisFileOnly) throws IllegalStateException, IOException {
541 DataFile df = fileByFileMap.get(file);
542 return getNextLocation(df, lastLocation, thisFileOnly);
543 }
544
545 public synchronized Location getNextLocation(DataFile dataFile, Location lastLocation, boolean thisFileOnly) throws IOException, IllegalStateException {
546
547 Location cur = null;
548 while (true) {
549 if (cur == null) {
550 if (lastLocation == null) {
551 DataFile head = dataFile.getHeadNode();
552 cur = new Location();
553 cur.setDataFileId(head.getDataFileId());
554 cur.setOffset(0);
555 } else {
556 // Set to the next offset..
557 cur = new Location(lastLocation);
558 cur.setOffset(cur.getOffset() + cur.getSize());
559 }
560 } else {
561 cur.setOffset(cur.getOffset() + cur.getSize());
562 }
563
564 // Did it go into the next file??
565 if (dataFile.getLength() <= cur.getOffset()) {
566 if (thisFileOnly) {
567 return null;
568 } else {
569 dataFile = getNextDataFile(dataFile);
570 if (dataFile == null) {
571 return null;
572 } else {
573 cur.setDataFileId(dataFile.getDataFileId().intValue());
574 cur.setOffset(0);
575 }
576 }
577 }
578
579 // Load in location size and type.
580 DataFileAccessor reader = accessorPool.openDataFileAccessor(dataFile);
581 try {
582 reader.readLocationDetails(cur);
583 } finally {
584 accessorPool.closeDataFileAccessor(reader);
585 }
586
587 if (cur.getType() == 0) {
588 return null;
589 } else if (cur.getType() > 0) {
590 // Only return user records.
591 return cur;
592 }
593 }
594 }
595
596 public synchronized ByteSequence read(Location location) throws IOException, IllegalStateException {
597 DataFile dataFile = getDataFile(location);
598 DataFileAccessor reader = accessorPool.openDataFileAccessor(dataFile);
599 ByteSequence rc = null;
600 try {
601 rc = reader.readRecord(location);
602 } finally {
603 accessorPool.closeDataFileAccessor(reader);
604 }
605 return rc;
606 }
607
608 public Location write(ByteSequence data, boolean sync) throws IOException, IllegalStateException {
609 Location loc = appender.storeItem(data, Location.USER_TYPE, sync);
610 return loc;
611 }
612
613 public Location write(ByteSequence data, Runnable onComplete) throws IOException, IllegalStateException {
614 Location loc = appender.storeItem(data, Location.USER_TYPE, onComplete);
615 return loc;
616 }
617
618 public void update(Location location, ByteSequence data, boolean sync) throws IOException {
619 DataFile dataFile = getDataFile(location);
620 DataFileAccessor updater = accessorPool.openDataFileAccessor(dataFile);
621 try {
622 updater.updateRecord(location, data, sync);
623 } finally {
624 accessorPool.closeDataFileAccessor(updater);
625 }
626 }
627
628 public File getDirectory() {
629 return directory;
630 }
631
632 public void setDirectory(File directory) {
633 this.directory = directory;
634 }
635
636 public String getFilePrefix() {
637 return filePrefix;
638 }
639
640 public void setFilePrefix(String filePrefix) {
641 this.filePrefix = filePrefix;
642 }
643
644 public Map<WriteKey, WriteCommand> getInflightWrites() {
645 return inflightWrites;
646 }
647
648 public Location getLastAppendLocation() {
649 return lastAppendLocation.get();
650 }
651
652 public void setLastAppendLocation(Location lastSyncedLocation) {
653 this.lastAppendLocation.set(lastSyncedLocation);
654 }
655
656 public File getDirectoryArchive() {
657 return directoryArchive;
658 }
659
660 public void setDirectoryArchive(File directoryArchive) {
661 this.directoryArchive = directoryArchive;
662 }
663
664 public boolean isArchiveDataLogs() {
665 return archiveDataLogs;
666 }
667
668 public void setArchiveDataLogs(boolean archiveDataLogs) {
669 this.archiveDataLogs = archiveDataLogs;
670 }
671
672 synchronized public Integer getCurrentDataFileId() {
673 if (dataFiles.isEmpty())
674 return null;
675 return dataFiles.getTail().getDataFileId();
676 }
677
678 /**
679 * Get a set of files - only valid after start()
680 *
681 * @return files currently being used
682 */
683 public Set<File> getFiles() {
684 return fileByFileMap.keySet();
685 }
686
687 public synchronized Map<Integer, DataFile> getFileMap() {
688 return new TreeMap<Integer, DataFile>(fileMap);
689 }
690
691 public long getDiskSize() {
692 long tailLength=0;
693 synchronized( this ) {
694 if( !dataFiles.isEmpty() ) {
695 tailLength = dataFiles.getTail().getLength();
696 }
697 }
698
699 long rc = totalLength.get();
700
701 // The last file is actually at a minimum preferedFileLength big.
702 if( tailLength < preferedFileLength ) {
703 rc -= tailLength;
704 rc += preferedFileLength;
705 }
706 return rc;
707 }
708
709 public void setReplicationTarget(ReplicationTarget replicationTarget) {
710 this.replicationTarget = replicationTarget;
711 }
712 public ReplicationTarget getReplicationTarget() {
713 return replicationTarget;
714 }
715
716 public String getFileSuffix() {
717 return fileSuffix;
718 }
719
720 public void setFileSuffix(String fileSuffix) {
721 this.fileSuffix = fileSuffix;
722 }
723
724 public boolean isChecksum() {
725 return checksum;
726 }
727
728 public void setChecksum(boolean checksumWrites) {
729 this.checksum = checksumWrites;
730 }
731
732 public boolean isCheckForCorruptionOnStartup() {
733 return checkForCorruptionOnStartup;
734 }
735
736 public void setCheckForCorruptionOnStartup(boolean checkForCorruptionOnStartup) {
737 this.checkForCorruptionOnStartup = checkForCorruptionOnStartup;
738 }
739
740 public void setWriteBatchSize(int writeBatchSize) {
741 this.writeBatchSize = writeBatchSize;
742 }
743
744 public int getWriteBatchSize() {
745 return writeBatchSize;
746 }
747
748 public void setSizeAccumulator(AtomicLong storeSizeAccumulator) {
749 this.totalLength = storeSizeAccumulator;
750 }
751 }