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annotate src/goodjava/lucene/logging/LoggingIndexWriter.java @ 1556:52241b69c339
lucene logging
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Sun, 11 Oct 2020 17:28:16 -0600 |
| parents | 9cc4cee39b8b |
| children | ea7075b7afe1 |
| rev | line source |
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| 1461 | 1 package goodjava.lucene.logging; |
| 2 | |
| 1465 | 3 import java.io.File; |
| 4 import java.io.RandomAccessFile; | |
| 5 import java.io.ByteArrayOutputStream; | |
| 6 import java.io.DataOutputStream; | |
| 7 import java.io.DataInputStream; | |
| 8 import java.io.FileInputStream; | |
| 1461 | 9 import java.io.IOException; |
| 10 import java.util.Map; | |
| 1465 | 11 import java.util.Set; |
| 12 import java.util.HashSet; | |
| 13 import java.util.Random; | |
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14 import java.util.concurrent.TimeUnit; |
| 1465 | 15 import org.apache.lucene.document.Document; |
| 16 import org.apache.lucene.index.DirectoryReader; | |
| 17 import org.apache.lucene.index.IndexReader; | |
| 1539 | 18 import org.apache.lucene.index.IndexWriter; |
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19 import org.apache.lucene.index.Term; |
| 1465 | 20 import org.apache.lucene.search.IndexSearcher; |
| 1461 | 21 import org.apache.lucene.search.Query; |
| 1465 | 22 import org.apache.lucene.search.MatchAllDocsQuery; |
| 23 import org.apache.lucene.search.TopDocs; | |
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24 import org.apache.lucene.search.PrefixQuery; |
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25 import org.apache.lucene.search.SortField; |
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26 import org.apache.lucene.search.Sort; |
| 1465 | 27 import org.apache.lucene.store.Directory; |
| 28 import org.apache.lucene.store.FSDirectory; | |
| 1473 | 29 import goodjava.io.IoUtils; |
| 1461 | 30 import goodjava.lucene.api.GoodIndexWriter; |
| 1465 | 31 import goodjava.lucene.api.LuceneIndexWriter; |
| 32 import goodjava.lucene.api.GoodCollector; | |
| 33 import goodjava.lucene.api.LuceneUtils; | |
| 34 import goodjava.logging.Logger; | |
| 35 import goodjava.logging.LoggerFactory; | |
| 1461 | 36 |
| 37 | |
| 1488 | 38 public class LoggingIndexWriter implements GoodIndexWriter { |
| 1465 | 39 private static final Logger logger = LoggerFactory.getLogger(LoggingIndexWriter.class); |
| 1548 | 40 private static final int version = 2; |
| 1461 | 41 private static final int OP_DELETE_ALL = 1; |
| 42 private static final int OP_DELETE_DOCUMENTS = 2; | |
| 43 private static final int OP_ADD_DOCUMENT = 3; | |
| 44 private static final int OP_UPDATE_DOCUMENT = 4; | |
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45 private static final int OP_TAG = 5; |
| 1465 | 46 private static final Random rnd = new Random(); |
| 1461 | 47 |
| 1465 | 48 public final LuceneIndexWriter indexWriter; |
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49 public boolean wasCreated; |
| 1465 | 50 private final File logDir; |
| 1548 | 51 private final long logTime; |
| 52 protected final LogFile[] logs = new LogFile[3]; | |
| 1486 | 53 private LogOutputStream log; |
| 1465 | 54 private final File index; |
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55 private final SemaphoreLock mergeLock = new SemaphoreLock(); |
| 1461 | 56 |
| 1548 | 57 public LoggingIndexWriter(LuceneIndexWriter indexWriter,File logDir,long logTime) |
| 58 throws IOException | |
| 59 { | |
| 1461 | 60 this.indexWriter = indexWriter; |
| 1465 | 61 this.logDir = logDir; |
| 1548 | 62 this.logTime = logTime; |
| 1501 | 63 IoUtils.mkdirs(logDir); |
| 1465 | 64 if( !logDir.isDirectory() ) |
| 65 throw new RuntimeException(); | |
| 66 index = new File(logDir,"index"); | |
| 67 if( index.exists() ) { | |
| 68 DataInputStream dis = new DataInputStream(new FileInputStream(index)); | |
| 69 try { | |
| 70 if( dis.readInt() == version ) { | |
| 1548 | 71 for( int i=0; i<logs.length; i++ ) { |
| 1465 | 72 File file = new File( logDir, dis.readUTF() ); |
| 1548 | 73 logs[i] = new LogFile(file); |
| 1465 | 74 } |
| 75 deleteUnusedFiles(); | |
| 1486 | 76 setLog(); |
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77 wasCreated = false; |
| 1465 | 78 return; |
| 79 } | |
| 80 } finally { | |
| 81 dis.close(); | |
| 82 } | |
| 83 } | |
| 1556 | 84 logger.info("building new logs"); |
| 85 for( int i=0; i<logs.length; i++ ) { | |
| 86 logs[i] = newLogFile(); | |
| 87 } | |
| 88 LogOutputStream log = logs[0].output(); | |
| 89 logLucene( System.currentTimeMillis(), log, indexWriter ); | |
| 90 log.close(); | |
| 91 writeIndex(); | |
| 92 setLog(); | |
| 93 logger.info("done building new logs"); | |
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94 wasCreated = true; |
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95 } |
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96 |
| 1548 | 97 public IndexReader openReader() throws IOException { |
| 98 return indexWriter.openReader(); | |
| 99 } | |
| 100 | |
| 1539 | 101 public IndexWriter getLuceneIndexWriter() { |
| 102 return indexWriter.getLuceneIndexWriter(); | |
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103 } |
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104 |
| 1486 | 105 private void setLog() throws IOException { |
| 106 if( log != null ) | |
| 107 log.close(); | |
| 1548 | 108 log = logs[2].output(); |
| 1486 | 109 } |
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110 /* |
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111 public synchronized boolean isMerging() { |
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112 return mergeLock.isLocked(); |
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113 } |
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114 */ |
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115 private void getMergeLock() { |
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116 try { |
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117 if( !mergeLock.tryLock(1,TimeUnit.MINUTES) ) |
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118 throw new RuntimeException("failed to acquire lock"); |
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119 } catch(InterruptedException e) { |
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120 throw new RuntimeException(e); |
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121 } |
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122 } |
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123 |
| 1548 | 124 public synchronized void logLucene() |
| 125 throws IOException | |
| 126 { | |
| 127 logLucene( System.currentTimeMillis(), log, indexWriter ); | |
| 128 } | |
| 129 | |
| 130 private static void logLucene(long time,LogOutputStream log,LuceneIndexWriter indexWriter) | |
| 131 throws IOException | |
| 132 { | |
| 133 log.writeLong(time); | |
| 134 log.writeByte(OP_DELETE_ALL); | |
| 1465 | 135 IndexReader reader = indexWriter.openReader(); |
| 136 final IndexSearcher searcher = new IndexSearcher(reader); | |
| 137 Query query = new MatchAllDocsQuery(); | |
| 138 searcher.search( query, new GoodCollector(){ | |
| 139 public void collectDoc(int iDoc) throws IOException { | |
| 140 Document doc = searcher.doc(iDoc); | |
| 141 Map<String,Object> storedFields = LuceneUtils.toMap(doc); | |
| 142 log.writeLong(time); | |
| 143 log.writeByte(OP_ADD_DOCUMENT); | |
| 144 log.writeMap(storedFields); | |
| 145 } | |
| 146 }); | |
| 147 reader.close(); | |
| 148 log.commit(); | |
| 149 } | |
| 150 | |
| 151 private LogFile newLogFile() throws IOException { | |
| 152 File file; | |
| 153 do { | |
| 154 file = new File(logDir,"_"+rnd.nextInt(100)+".log"); | |
| 155 } while( file.exists() ); | |
| 1486 | 156 return new LogFile(file); |
| 1461 | 157 } |
| 158 | |
| 1473 | 159 private void deleteUnusedFiles() throws IOException { |
| 1499 | 160 deleteUnusedFiles(logs,index); |
| 161 } | |
| 162 | |
| 1548 | 163 private static void deleteUnusedFiles(LogFile[] logs,File index) throws IOException { |
| 1465 | 164 Set<String> used = new HashSet<String>(); |
| 165 used.add( index.getName() ); | |
| 166 for( LogFile lf : logs ) { | |
| 167 used.add( lf.file.getName() ); | |
| 168 } | |
| 1499 | 169 for( File f : index.getParentFile().listFiles() ) { |
| 1465 | 170 if( !used.contains(f.getName()) ) { |
| 1475 | 171 IoUtils.deleteRecursively(f); |
| 1465 | 172 } |
| 173 } | |
| 1461 | 174 } |
| 175 | |
| 1465 | 176 private void writeIndex() throws IOException { |
| 1499 | 177 writeIndex(logs,index); |
| 178 } | |
| 179 | |
| 1548 | 180 public static void writeIndex(LogFile[] logs,File index) throws IOException { |
| 181 if( logs.length != 3 ) | |
| 182 throw new RuntimeException(); | |
| 1465 | 183 ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| 184 DataOutputStream dos = new DataOutputStream(baos); | |
| 185 dos.writeInt(version); | |
| 186 for( LogFile lf : logs ) { | |
| 187 String fileName = lf.file.getName(); | |
| 188 dos.writeUTF(fileName); | |
| 189 } | |
| 190 dos.close(); | |
| 191 RandomAccessFile raf = new RandomAccessFile( index, "rwd" ); | |
| 192 raf.write( baos.toByteArray() ); | |
| 193 raf.close(); | |
| 1499 | 194 deleteUnusedFiles(logs,index); |
| 195 //logger.info("writeIndex "+logs.toString()); | |
| 1461 | 196 } |
| 197 | |
| 1465 | 198 private void mergeLogs() throws IOException { |
| 1548 | 199 logger.info("merge"); |
| 200 if( !mergeLock.isLocked() ) { | |
| 201 logger.error("merge without lock"); | |
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202 return; |
| 1548 | 203 } |
| 204 LogFile first = logs[0]; | |
| 205 LogFile second = logs[1]; | |
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206 long lastTime = second.file.lastModified(); |
| 1465 | 207 File dirFile = new File(logDir,"merge"); |
| 208 if( dirFile.exists() ) | |
| 209 throw new RuntimeException(); | |
| 210 Directory dir = FSDirectory.open(dirFile); | |
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211 LuceneIndexWriter mergeWriter = new LuceneIndexWriter( dir, indexWriter.goodConfig ); |
| 1551 | 212 OpDoer opDoer = new BasicOpDoer(mergeWriter); |
| 1549 | 213 playLog( first.input(), opDoer ); |
| 214 playLog( second.input(), opDoer ); | |
| 1465 | 215 mergeWriter.commit(); |
| 216 LogFile merge = newLogFile(); | |
| 1548 | 217 LogOutputStream log = merge.output(); |
| 218 logLucene( lastTime, log, mergeWriter ); | |
| 219 log.close(); | |
| 1465 | 220 mergeWriter.close(); |
| 221 synchronized(this) { | |
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222 //check(); |
| 1548 | 223 logs[0] = merge; |
| 224 logs[1] = logs[2]; | |
| 225 logs[2] = newLogFile(); | |
| 1465 | 226 writeIndex(); |
| 1548 | 227 setLog(); |
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228 //check(null); |
| 1465 | 229 } |
| 1461 | 230 } |
| 1465 | 231 private final Runnable mergeLogs = new Runnable() { public void run() { |
| 232 try { | |
| 233 mergeLogs(); | |
| 234 } catch(IOException e) { | |
| 235 throw new RuntimeException(e); | |
| 236 } finally { | |
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237 mergeLock.unlock(); |
| 1465 | 238 } |
| 239 } }; | |
| 1461 | 240 |
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241 private static class DocIter { |
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242 final IndexReader reader; |
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243 final TopDocs td; |
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244 final int n; |
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245 int i = 0; |
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246 |
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247 DocIter(IndexReader reader,Query query,Sort sort) throws IOException { |
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248 this.reader = reader; |
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249 IndexSearcher searcher = new IndexSearcher(reader); |
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250 this.td = searcher.search(query,10000000,sort); |
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251 this.n = td.scoreDocs.length; |
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252 if( td.totalHits != n ) |
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253 throw new RuntimeException(); |
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254 } |
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255 |
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256 Document next() throws IOException { |
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257 return i < n ? reader.document(td.scoreDocs[i++].doc) : null; |
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258 } |
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259 } |
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260 |
| 1487 | 261 private volatile boolean isChecking = false; |
| 262 | |
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263 public boolean check(SortField sortField) throws IOException { |
| 1487 | 264 if( isChecking ) |
| 265 throw new RuntimeException("another check is running"); | |
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266 isChecking = true; |
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267 try { |
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268 return doCheck(sortField); |
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269 } finally { |
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270 isChecking = false; |
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271 } |
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272 } |
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273 |
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274 protected boolean doCheck(SortField sortField) throws IOException { |
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275 boolean ok = true; |
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276 IndexReader indexReader; |
| 1548 | 277 LogInputStream[] logReaders; |
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278 synchronized(this) { |
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279 indexReader = indexWriter.openReader(); |
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280 logReaders = logReaders(logs); |
| 1465 | 281 } |
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282 try { |
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283 //logger.info("check start"); |
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284 indexWriter.check(); |
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285 File dirFile = new File(logDir,"check"); |
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286 IoUtils.deleteRecursively(dirFile); |
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287 Directory dir = FSDirectory.open(dirFile); |
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288 LuceneIndexWriter checkWriter = new LuceneIndexWriter( dir, indexWriter.goodConfig ); |
| 1551 | 289 playLogs(logReaders,new BasicOpDoer(checkWriter)); |
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290 //logger.info("check lucene"); |
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291 IndexReader checkReader = checkWriter.openReader(); |
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292 int nCheck = checkReader.numDocs(); |
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293 int nOrig = indexReader.numDocs(); |
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294 if( nCheck != nOrig ) { |
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295 logger.error("numDocs mismatch: lucene="+nOrig+" logs="+nCheck); |
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296 ok = false; |
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297 } |
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298 if( sortField == null ) { |
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299 if( ok && hash(indexReader) != hash(checkReader) ) { |
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300 logger.error("hash mismatch"); |
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301 ok = false; |
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302 } |
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303 } else { |
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304 Sort sort = new Sort(sortField); |
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305 String sortFieldName = sortField.getField(); |
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306 Query query = new PrefixQuery(new Term(sortFieldName)); |
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307 DocIter origIter = new DocIter(indexReader,query,sort); |
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308 DocIter checkIter = new DocIter(checkReader,query,sort); |
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309 Map<String,Object> origFields = LuceneUtils.toMap(origIter.next()); |
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310 Map<String,Object> checkFields = LuceneUtils.toMap(checkIter.next()); |
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311 while( origFields!=null && checkFields!=null ) { |
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312 Comparable origFld = (Comparable)origFields.get(sortFieldName); |
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313 Comparable checkFld = (Comparable)checkFields.get(sortFieldName); |
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314 int cmp = origFld.compareTo(checkFld); |
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315 if( cmp==0 ) { |
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316 if( !origFields.equals(checkFields) ) { |
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317 logger.error(sortFieldName+" "+origFld+" not equal"); |
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318 logger.error("lucene = "+origFields); |
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319 logger.error("logs = "+checkFields); |
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320 ok = false; |
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321 } |
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322 origFields = LuceneUtils.toMap(origIter.next()); |
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323 checkFields = LuceneUtils.toMap(checkIter.next()); |
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324 } else if( cmp < 0 ) { |
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325 logger.error(sortFieldName+" "+origFld+" found in lucene but not logs"); |
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326 ok = false; |
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327 origFields = LuceneUtils.toMap(origIter.next()); |
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328 } else { // > |
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329 logger.error(sortFieldName+" "+checkFld+" found in logs but not lucene"); |
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330 ok = false; |
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331 checkFields = LuceneUtils.toMap(checkIter.next()); |
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332 } |
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333 } |
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334 while( origFields!=null ) { |
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335 Comparable origFld = (Comparable)origFields.get(sortFieldName); |
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336 logger.error(sortFieldName+" "+origFld+" found in lucene but not logs"); |
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337 ok = false; |
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338 origFields = LuceneUtils.toMap(origIter.next()); |
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339 } |
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340 while( checkFields!=null ) { |
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341 Comparable checkFld = (Comparable)checkFields.get(sortFieldName); |
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342 logger.error(sortFieldName+" "+checkFld+" found in logs but not lucene"); |
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343 ok = false; |
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344 checkFields = LuceneUtils.toMap(checkIter.next()); |
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345 } |
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346 //logger.info("check done"); |
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347 } |
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348 checkReader.close(); |
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349 checkWriter.close(); |
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350 IoUtils.deleteRecursively(dirFile); |
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351 //logger.info("check done"); |
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352 } finally { |
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353 indexReader.close(); |
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354 } |
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355 return ok; |
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356 } |
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357 |
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358 private static abstract class HashCollector extends GoodCollector { |
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359 int total = 0; |
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360 } |
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361 |
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362 private static int hash(IndexReader reader) throws IOException { |
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363 final IndexSearcher searcher = new IndexSearcher(reader); |
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364 Query query = new MatchAllDocsQuery(); |
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365 HashCollector col = new HashCollector() { |
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366 public void collectDoc(int iDoc) throws IOException { |
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367 Document doc = searcher.doc(iDoc); |
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368 Map<String,Object> storedFields = LuceneUtils.toMap(doc); |
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369 total += storedFields.hashCode(); |
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370 } |
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371 }; |
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372 searcher.search(query,col); |
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373 return col.total; |
| 1461 | 374 } |
| 375 | |
| 1465 | 376 public synchronized void close() throws IOException { |
| 377 indexWriter.close(); | |
| 378 log.commit(); | |
| 1486 | 379 log.close(); |
| 1465 | 380 } |
| 381 | |
| 382 public synchronized void commit() throws IOException { | |
| 383 indexWriter.commit(); | |
| 384 log.commit(); | |
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385 if( mergeLock.isLocked() ) |
| 1465 | 386 return; |
| 1548 | 387 if( logs[1].file.lastModified() < System.currentTimeMillis() - logTime ) { |
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388 getMergeLock(); |
| 1504 | 389 new Thread(mergeLogs).start(); |
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390 // mergeLogs.run(); |
| 1465 | 391 } |
| 1461 | 392 } |
| 393 | |
| 1465 | 394 public synchronized void rollback() throws IOException { |
| 395 indexWriter.rollback(); | |
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396 log.rollback(); |
| 1465 | 397 } |
| 398 | |
| 399 public synchronized void deleteAll() throws IOException { | |
| 400 indexWriter.deleteAll(); | |
| 1486 | 401 writeOp(OP_DELETE_ALL); |
| 1461 | 402 } |
| 403 | |
| 1465 | 404 public synchronized void deleteDocuments(Query query) throws IOException { |
| 405 indexWriter.deleteDocuments(query); | |
| 1486 | 406 writeOp(OP_DELETE_DOCUMENTS); |
| 1465 | 407 log.writeQuery(query); |
| 408 } | |
| 409 | |
| 410 public synchronized void addDocument(Map<String,Object> storedFields) throws IOException { | |
| 411 indexWriter.addDocument(storedFields); | |
| 1486 | 412 writeOp(OP_ADD_DOCUMENT); |
| 1465 | 413 log.writeMap(storedFields); |
| 414 } | |
| 415 | |
| 416 public synchronized void updateDocument(String keyFieldName,Map<String,Object> storedFields) throws IOException { | |
| 417 indexWriter.updateDocument(keyFieldName,storedFields); | |
| 1486 | 418 writeOp(OP_UPDATE_DOCUMENT); |
| 1465 | 419 log.writeUTF(keyFieldName); |
| 420 log.writeMap(storedFields); | |
| 421 } | |
| 422 | |
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423 public synchronized void tag(String tag) throws IOException { |
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424 writeOp(OP_TAG); |
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425 log.writeUTF(tag); |
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426 } |
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427 |
| 1465 | 428 public synchronized void reindexDocuments(String keyFieldName,Query query) throws IOException { |
| 1461 | 429 indexWriter.reindexDocuments(keyFieldName,query); |
| 430 } | |
| 431 | |
| 1486 | 432 private void writeOp(int op) throws IOException { |
| 1465 | 433 log.writeLong(System.currentTimeMillis()); |
| 434 log.writeByte(op); | |
| 435 } | |
| 436 | |
| 1549 | 437 public synchronized void playLogs(OpDoer opDoer) throws IOException { |
| 438 if( opDoer == null ) | |
| 1551 | 439 opDoer = new BasicOpDoer(indexWriter); |
| 1549 | 440 playLogs( logReaders(logs), opDoer ); |
| 1465 | 441 } |
| 442 | |
| 1548 | 443 private static LogInputStream[] logReaders(LogFile[] logs) throws IOException { |
| 444 LogInputStream[] logReaders = new LogInputStream[logs.length]; | |
| 445 for( int i=0; i<logs.length; i++ ) { | |
| 446 logReaders[i] = logs[i].input(); | |
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447 } |
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448 return logReaders; |
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449 } |
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450 |
| 1549 | 451 private static void playLogs(LogInputStream[] logReaders,OpDoer opDoer) |
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452 throws IOException |
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453 { |
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454 for( LogInputStream reader : logReaders ) { |
| 1549 | 455 playLog(reader,opDoer); |
| 1465 | 456 } |
| 1549 | 457 opDoer.commit(); |
| 1465 | 458 } |
| 459 | |
| 1549 | 460 private static void playLog(LogInputStream in,OpDoer opDoer) |
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461 throws IOException |
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462 { |
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463 while( in.available() > 0 ) { |
| 1549 | 464 playOp(in,opDoer); |
| 1465 | 465 } |
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466 in.close(); |
| 1465 | 467 } |
| 468 | |
| 1549 | 469 private static void playOp(LogInputStream in,OpDoer opDoer) |
| 1548 | 470 throws IOException |
| 471 { | |
| 1549 | 472 long time = in.readLong(); // time |
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473 int op = in.readByte(); |
| 1461 | 474 switch(op) { |
| 475 case OP_DELETE_ALL: | |
| 1549 | 476 opDoer.deleteAll(time); |
| 1548 | 477 return; |
| 1461 | 478 case OP_DELETE_DOCUMENTS: |
|
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479 { |
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480 Query query = in.readQuery(); |
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481 //System.out.println("OP_DELETE_DOCUMENTS "+query); |
| 1549 | 482 opDoer.deleteDocuments(time,query); |
| 1548 | 483 return; |
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484 } |
| 1461 | 485 case OP_ADD_DOCUMENT: |
| 1465 | 486 { |
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487 Map storedFields = in.readMap(); |
| 1549 | 488 opDoer.addDocument(time,storedFields); |
| 1548 | 489 return; |
| 1465 | 490 } |
| 1461 | 491 case OP_UPDATE_DOCUMENT: |
| 1465 | 492 { |
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493 String keyFieldName = in.readUTF(); |
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494 Map storedFields = in.readMap(); |
| 1549 | 495 opDoer.updateDocument(time,keyFieldName,storedFields); |
| 1548 | 496 return; |
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497 } |
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498 case OP_TAG: |
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499 { |
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500 String tag = in.readUTF(); |
| 1549 | 501 opDoer.tag(time,tag); |
| 1548 | 502 return; |
| 1465 | 503 } |
| 1461 | 504 default: |
| 505 throw new RuntimeException("invalid op "+op); | |
| 506 } | |
| 507 } | |
| 508 | |
| 1465 | 509 private static void dump(LuceneIndexWriter indexWriter) throws IOException { |
| 510 IndexReader reader = indexWriter.openReader(); | |
| 511 IndexSearcher searcher = new IndexSearcher(reader); | |
| 512 Query query = new MatchAllDocsQuery(); | |
| 513 TopDocs td = searcher.search(query,100); | |
| 514 System.out.println("totalHits = "+td.totalHits); | |
| 515 for( int i=0; i<td.scoreDocs.length; i++ ) { | |
| 516 Document doc = searcher.doc(td.scoreDocs[i].doc); | |
| 517 System.out.println(LuceneUtils.toMap(doc)); | |
| 1461 | 518 } |
| 1465 | 519 System.out.println(); |
| 520 reader.close(); | |
| 1461 | 521 } |
| 1465 | 522 |
| 1461 | 523 } |