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annotate src/goodjava/lucene/logging/LoggingIndexWriter.java @ 2023:544ccce564f6 default tip
minor
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Mon, 20 Oct 2025 17:34:14 -0600 |
| parents | 39287902fb0c |
| children |
| 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; | |
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6 import java.io.OutputStreamWriter; |
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7 import java.io.FileReader; |
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8 import java.io.Writer; |
| 1461 | 9 import java.io.IOException; |
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10 import java.util.List; |
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11 import java.util.ArrayList; |
| 1461 | 12 import java.util.Map; |
| 1465 | 13 import java.util.Set; |
| 14 import java.util.HashSet; | |
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15 import java.util.LinkedHashMap; |
| 1465 | 16 import java.util.Random; |
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17 import java.util.concurrent.TimeUnit; |
| 1465 | 18 import org.apache.lucene.document.Document; |
| 19 import org.apache.lucene.index.DirectoryReader; | |
| 20 import org.apache.lucene.index.IndexReader; | |
| 1539 | 21 import org.apache.lucene.index.IndexWriter; |
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22 import org.apache.lucene.index.Term; |
| 1465 | 23 import org.apache.lucene.search.IndexSearcher; |
| 1461 | 24 import org.apache.lucene.search.Query; |
| 1465 | 25 import org.apache.lucene.search.MatchAllDocsQuery; |
| 26 import org.apache.lucene.search.TopDocs; | |
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27 import org.apache.lucene.search.PrefixQuery; |
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28 import org.apache.lucene.search.SortField; |
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29 import org.apache.lucene.search.Sort; |
| 1465 | 30 import org.apache.lucene.store.Directory; |
| 31 import org.apache.lucene.store.FSDirectory; | |
| 1473 | 32 import goodjava.io.IoUtils; |
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33 import goodjava.json.JsonParser; |
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34 import goodjava.json.JsonToString; |
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35 import goodjava.parser.ParseException; |
| 1461 | 36 import goodjava.lucene.api.GoodIndexWriter; |
| 1465 | 37 import goodjava.lucene.api.LuceneIndexWriter; |
| 38 import goodjava.lucene.api.GoodCollector; | |
| 39 import goodjava.lucene.api.LuceneUtils; | |
| 40 import goodjava.logging.Logger; | |
| 41 import goodjava.logging.LoggerFactory; | |
| 1461 | 42 |
| 43 | |
| 1488 | 44 public class LoggingIndexWriter implements GoodIndexWriter { |
| 1465 | 45 private static final Logger logger = LoggerFactory.getLogger(LoggingIndexWriter.class); |
| 1548 | 46 private static final int version = 2; |
| 1461 | 47 private static final int OP_DELETE_ALL = 1; |
| 48 private static final int OP_DELETE_DOCUMENTS = 2; | |
| 49 private static final int OP_ADD_DOCUMENT = 3; | |
| 50 private static final int OP_UPDATE_DOCUMENT = 4; | |
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51 private static final int OP_TAG = 5; |
| 1465 | 52 private static final Random rnd = new Random(); |
| 1461 | 53 |
| 1465 | 54 public final LuceneIndexWriter indexWriter; |
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55 public boolean wasCreated; |
| 1465 | 56 private final File logDir; |
| 1548 | 57 private final long logTime; |
| 58 protected final LogFile[] logs = new LogFile[3]; | |
| 1486 | 59 private LogOutputStream log; |
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60 private final File indexFile; |
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61 private final SemaphoreLock mergeLock = new SemaphoreLock(); |
| 1461 | 62 |
| 1548 | 63 public LoggingIndexWriter(LuceneIndexWriter indexWriter,File logDir,long logTime) |
| 64 throws IOException | |
| 65 { | |
| 1461 | 66 this.indexWriter = indexWriter; |
| 1465 | 67 this.logDir = logDir; |
| 1548 | 68 this.logTime = logTime; |
| 1501 | 69 IoUtils.mkdirs(logDir); |
| 1465 | 70 if( !logDir.isDirectory() ) |
| 71 throw new RuntimeException(); | |
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72 indexFile = new File(logDir,"index.json"); |
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73 if( indexFile.exists() ) { |
| 1465 | 74 try { |
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75 Map map = (Map)JsonParser.parse( IoUtils.readAll(new FileReader(indexFile)) ); |
| 1679 | 76 if( ((Number)map.get("version")).intValue() == version ) { |
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77 List fileNames = (List)map.get("files"); |
| 1548 | 78 for( int i=0; i<logs.length; i++ ) { |
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79 File file = new File( logDir, (String)fileNames.get(i) ); |
| 1548 | 80 logs[i] = new LogFile(file); |
| 1465 | 81 } |
| 82 deleteUnusedFiles(); | |
| 1486 | 83 setLog(); |
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84 wasCreated = false; |
| 1465 | 85 return; |
| 86 } | |
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87 } catch(ParseException e) { |
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88 logger.error("bad index.json",e); |
| 1465 | 89 } |
| 90 } | |
| 1556 | 91 logger.info("building new logs"); |
| 92 for( int i=0; i<logs.length; i++ ) { | |
| 93 logs[i] = newLogFile(); | |
| 94 } | |
| 95 LogOutputStream log = logs[0].output(); | |
| 96 logLucene( System.currentTimeMillis(), log, indexWriter ); | |
| 97 log.close(); | |
| 98 writeIndex(); | |
| 99 setLog(); | |
| 100 logger.info("done building new logs"); | |
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101 wasCreated = true; |
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102 } |
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103 |
| 1548 | 104 public IndexReader openReader() throws IOException { |
| 105 return indexWriter.openReader(); | |
| 106 } | |
| 107 | |
| 1539 | 108 public IndexWriter getLuceneIndexWriter() { |
| 109 return indexWriter.getLuceneIndexWriter(); | |
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110 } |
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111 |
| 1486 | 112 private void setLog() throws IOException { |
| 113 if( log != null ) | |
| 114 log.close(); | |
| 1548 | 115 log = logs[2].output(); |
| 1486 | 116 } |
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117 /* |
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118 public synchronized boolean isMerging() { |
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119 return mergeLock.isLocked(); |
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120 } |
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121 */ |
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122 private void getMergeLock() { |
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123 try { |
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124 if( !mergeLock.tryLock(1,TimeUnit.MINUTES) ) |
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125 throw new RuntimeException("failed to acquire lock"); |
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126 } catch(InterruptedException e) { |
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127 throw new RuntimeException(e); |
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128 } |
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129 } |
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130 |
| 1548 | 131 public synchronized void logLucene() |
| 132 throws IOException | |
| 133 { | |
| 134 logLucene( System.currentTimeMillis(), log, indexWriter ); | |
| 135 } | |
| 136 | |
| 137 private static void logLucene(long time,LogOutputStream log,LuceneIndexWriter indexWriter) | |
| 138 throws IOException | |
| 139 { | |
| 140 log.writeLong(time); | |
| 141 log.writeByte(OP_DELETE_ALL); | |
| 1465 | 142 IndexReader reader = indexWriter.openReader(); |
| 143 final IndexSearcher searcher = new IndexSearcher(reader); | |
| 144 Query query = new MatchAllDocsQuery(); | |
| 145 searcher.search( query, new GoodCollector(){ | |
| 146 public void collectDoc(int iDoc) throws IOException { | |
| 147 Document doc = searcher.doc(iDoc); | |
| 148 Map<String,Object> storedFields = LuceneUtils.toMap(doc); | |
| 149 log.writeLong(time); | |
| 150 log.writeByte(OP_ADD_DOCUMENT); | |
| 151 log.writeMap(storedFields); | |
| 152 } | |
| 153 }); | |
| 154 reader.close(); | |
| 155 log.commit(); | |
| 156 } | |
| 157 | |
| 158 private LogFile newLogFile() throws IOException { | |
| 159 File file; | |
| 160 do { | |
| 161 file = new File(logDir,"_"+rnd.nextInt(100)+".log"); | |
| 162 } while( file.exists() ); | |
| 1486 | 163 return new LogFile(file); |
| 1461 | 164 } |
| 165 | |
| 1473 | 166 private void deleteUnusedFiles() throws IOException { |
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167 deleteUnusedFiles(logs,indexFile); |
| 1499 | 168 } |
| 169 | |
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170 private static void deleteUnusedFiles(LogFile[] logs,File indexFile) throws IOException { |
| 1465 | 171 Set<String> used = new HashSet<String>(); |
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172 used.add( indexFile.getName() ); |
| 1465 | 173 for( LogFile lf : logs ) { |
| 174 used.add( lf.file.getName() ); | |
| 175 } | |
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176 for( File f : indexFile.getParentFile().listFiles() ) { |
| 1465 | 177 if( !used.contains(f.getName()) ) { |
| 1475 | 178 IoUtils.deleteRecursively(f); |
| 1465 | 179 } |
| 180 } | |
| 1461 | 181 } |
| 182 | |
| 1465 | 183 private void writeIndex() throws IOException { |
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184 writeIndex(logs,indexFile); |
| 1499 | 185 } |
| 186 | |
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187 public static void writeIndex(LogFile[] logs,File indexFile) throws IOException { |
| 1548 | 188 if( logs.length != 3 ) |
| 189 throw new RuntimeException(); | |
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190 Map map = new LinkedHashMap(); |
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191 map.put("version",version); |
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192 List fileNames = new ArrayList(); |
| 1465 | 193 for( LogFile lf : logs ) { |
| 194 String fileName = lf.file.getName(); | |
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195 fileNames.add(fileName); |
| 1465 | 196 } |
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197 map.put("files",fileNames); |
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198 ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
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199 Writer writer = new OutputStreamWriter(baos); |
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200 writer.write( new JsonToString().toString(map) ); |
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201 writer.write( '\n' ); |
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202 writer.close(); |
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203 RandomAccessFile raf = new RandomAccessFile( indexFile, "rwd" ); |
| 1465 | 204 raf.write( baos.toByteArray() ); |
| 205 raf.close(); | |
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206 deleteUnusedFiles(logs,indexFile); |
| 1499 | 207 //logger.info("writeIndex "+logs.toString()); |
| 1461 | 208 } |
| 209 | |
| 1465 | 210 private void mergeLogs() throws IOException { |
| 1548 | 211 logger.info("merge"); |
| 212 if( !mergeLock.isLocked() ) { | |
| 213 logger.error("merge without lock"); | |
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214 return; |
| 1548 | 215 } |
| 216 LogFile first = logs[0]; | |
| 217 LogFile second = logs[1]; | |
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218 long lastTime = second.file.lastModified(); |
| 1465 | 219 File dirFile = new File(logDir,"merge"); |
| 220 if( dirFile.exists() ) | |
| 221 throw new RuntimeException(); | |
| 222 Directory dir = FSDirectory.open(dirFile); | |
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223 LuceneIndexWriter mergeWriter = new LuceneIndexWriter( dir, indexWriter.goodConfig ); |
| 1551 | 224 OpDoer opDoer = new BasicOpDoer(mergeWriter); |
| 1549 | 225 playLog( first.input(), opDoer ); |
| 226 playLog( second.input(), opDoer ); | |
| 1465 | 227 mergeWriter.commit(); |
| 228 LogFile merge = newLogFile(); | |
| 1548 | 229 LogOutputStream log = merge.output(); |
| 230 logLucene( lastTime, log, mergeWriter ); | |
| 231 log.close(); | |
| 1465 | 232 mergeWriter.close(); |
| 233 synchronized(this) { | |
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234 //check(); |
| 1548 | 235 logs[0] = merge; |
| 236 logs[1] = logs[2]; | |
| 237 logs[2] = newLogFile(); | |
| 1465 | 238 writeIndex(); |
| 1548 | 239 setLog(); |
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240 //check(null); |
| 1465 | 241 } |
| 1461 | 242 } |
| 1465 | 243 private final Runnable mergeLogs = new Runnable() { public void run() { |
| 244 try { | |
| 245 mergeLogs(); | |
| 246 } catch(IOException e) { | |
| 247 throw new RuntimeException(e); | |
| 248 } finally { | |
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249 mergeLock.unlock(); |
| 1465 | 250 } |
| 251 } }; | |
| 1461 | 252 |
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253 private static class DocIter { |
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254 final IndexReader reader; |
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255 final TopDocs td; |
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256 final int n; |
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257 int i = 0; |
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258 |
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259 DocIter(IndexReader reader,Query query,Sort sort) throws IOException { |
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260 this.reader = reader; |
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261 IndexSearcher searcher = new IndexSearcher(reader); |
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262 this.td = searcher.search(query,10000000,sort); |
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263 this.n = td.scoreDocs.length; |
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264 if( td.totalHits != n ) |
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265 throw new RuntimeException(); |
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266 } |
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267 |
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268 Document next() throws IOException { |
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269 return i < n ? reader.document(td.scoreDocs[i++].doc) : null; |
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270 } |
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271 } |
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272 |
| 1487 | 273 private volatile boolean isChecking = false; |
| 274 | |
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275 public boolean check(SortField sortField) throws IOException { |
| 1487 | 276 if( isChecking ) |
| 277 throw new RuntimeException("another check is running"); | |
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278 isChecking = true; |
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279 try { |
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280 return doCheck(sortField); |
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281 } finally { |
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282 isChecking = false; |
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283 } |
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284 } |
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285 |
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286 protected boolean doCheck(SortField sortField) throws IOException { |
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287 boolean ok = true; |
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288 IndexReader indexReader; |
| 1548 | 289 LogInputStream[] logReaders; |
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290 synchronized(this) { |
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291 indexReader = indexWriter.openReader(); |
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292 logReaders = logReaders(logs); |
| 1465 | 293 } |
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294 try { |
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295 //logger.info("check start"); |
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296 indexWriter.check(); |
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297 File dirFile = new File(logDir,"check"); |
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298 IoUtils.deleteRecursively(dirFile); |
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299 Directory dir = FSDirectory.open(dirFile); |
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300 LuceneIndexWriter checkWriter = new LuceneIndexWriter( dir, indexWriter.goodConfig ); |
| 1551 | 301 playLogs(logReaders,new BasicOpDoer(checkWriter)); |
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302 //logger.info("check lucene"); |
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303 IndexReader checkReader = checkWriter.openReader(); |
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304 int nCheck = checkReader.numDocs(); |
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305 int nOrig = indexReader.numDocs(); |
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306 if( nCheck != nOrig ) { |
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307 logger.error("numDocs mismatch: lucene="+nOrig+" logs="+nCheck); |
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308 ok = false; |
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309 } |
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310 if( sortField == null ) { |
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311 if( ok && hash(indexReader) != hash(checkReader) ) { |
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312 logger.error("hash mismatch"); |
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313 ok = false; |
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314 } |
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315 } else { |
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316 Sort sort = new Sort(sortField); |
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317 String sortFieldName = sortField.getField(); |
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318 Query query = new PrefixQuery(new Term(sortFieldName)); |
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319 DocIter origIter = new DocIter(indexReader,query,sort); |
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320 DocIter checkIter = new DocIter(checkReader,query,sort); |
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321 Map<String,Object> origFields = LuceneUtils.toMap(origIter.next()); |
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322 Map<String,Object> checkFields = LuceneUtils.toMap(checkIter.next()); |
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323 while( origFields!=null && checkFields!=null ) { |
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324 Comparable origFld = (Comparable)origFields.get(sortFieldName); |
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325 Comparable checkFld = (Comparable)checkFields.get(sortFieldName); |
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326 int cmp = origFld.compareTo(checkFld); |
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327 if( cmp==0 ) { |
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328 if( !origFields.equals(checkFields) ) { |
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329 logger.error(sortFieldName+" "+origFld+" not equal"); |
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330 logger.error("lucene = "+origFields); |
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331 logger.error("logs = "+checkFields); |
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332 ok = false; |
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333 } |
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334 origFields = LuceneUtils.toMap(origIter.next()); |
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335 checkFields = LuceneUtils.toMap(checkIter.next()); |
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336 } else if( cmp < 0 ) { |
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337 logger.error(sortFieldName+" "+origFld+" found in lucene but not logs"); |
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338 ok = false; |
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339 origFields = LuceneUtils.toMap(origIter.next()); |
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340 } else { // > |
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341 logger.error(sortFieldName+" "+checkFld+" found in logs but not lucene"); |
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342 ok = false; |
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343 checkFields = LuceneUtils.toMap(checkIter.next()); |
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344 } |
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345 } |
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346 while( origFields!=null ) { |
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347 Comparable origFld = (Comparable)origFields.get(sortFieldName); |
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348 logger.error(sortFieldName+" "+origFld+" found in lucene but not logs"); |
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349 ok = false; |
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350 origFields = LuceneUtils.toMap(origIter.next()); |
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351 } |
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352 while( checkFields!=null ) { |
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353 Comparable checkFld = (Comparable)checkFields.get(sortFieldName); |
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354 logger.error(sortFieldName+" "+checkFld+" found in logs but not lucene"); |
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355 ok = false; |
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356 checkFields = LuceneUtils.toMap(checkIter.next()); |
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357 } |
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358 //logger.info("check done"); |
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359 } |
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360 checkReader.close(); |
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361 checkWriter.close(); |
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362 IoUtils.deleteRecursively(dirFile); |
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363 //logger.info("check done"); |
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364 } finally { |
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365 indexReader.close(); |
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366 } |
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367 return ok; |
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368 } |
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369 |
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370 private static abstract class HashCollector extends GoodCollector { |
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371 int total = 0; |
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372 } |
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373 |
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374 private static int hash(IndexReader reader) throws IOException { |
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375 final IndexSearcher searcher = new IndexSearcher(reader); |
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376 Query query = new MatchAllDocsQuery(); |
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377 HashCollector col = new HashCollector() { |
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378 public void collectDoc(int iDoc) throws IOException { |
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379 Document doc = searcher.doc(iDoc); |
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380 Map<String,Object> storedFields = LuceneUtils.toMap(doc); |
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381 total += storedFields.hashCode(); |
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382 } |
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383 }; |
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384 searcher.search(query,col); |
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385 return col.total; |
| 1461 | 386 } |
| 387 | |
| 1465 | 388 public synchronized void close() throws IOException { |
| 389 indexWriter.close(); | |
| 390 log.commit(); | |
| 1486 | 391 log.close(); |
| 1465 | 392 } |
| 393 | |
| 394 public synchronized void commit() throws IOException { | |
| 395 indexWriter.commit(); | |
| 396 log.commit(); | |
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397 if( mergeLock.isLocked() ) |
| 1465 | 398 return; |
| 1548 | 399 if( logs[1].file.lastModified() < System.currentTimeMillis() - logTime ) { |
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400 getMergeLock(); |
| 1504 | 401 new Thread(mergeLogs).start(); |
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402 // mergeLogs.run(); |
| 1465 | 403 } |
| 1461 | 404 } |
| 405 | |
| 1465 | 406 public synchronized void rollback() throws IOException { |
| 407 indexWriter.rollback(); | |
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408 log.rollback(); |
| 1465 | 409 } |
| 410 | |
| 411 public synchronized void deleteAll() throws IOException { | |
| 412 indexWriter.deleteAll(); | |
| 1486 | 413 writeOp(OP_DELETE_ALL); |
| 1461 | 414 } |
| 415 | |
| 1465 | 416 public synchronized void deleteDocuments(Query query) throws IOException { |
| 417 indexWriter.deleteDocuments(query); | |
| 1486 | 418 writeOp(OP_DELETE_DOCUMENTS); |
| 1465 | 419 log.writeQuery(query); |
| 420 } | |
| 421 | |
| 422 public synchronized void addDocument(Map<String,Object> storedFields) throws IOException { | |
| 423 indexWriter.addDocument(storedFields); | |
| 1486 | 424 writeOp(OP_ADD_DOCUMENT); |
| 1465 | 425 log.writeMap(storedFields); |
| 426 } | |
| 427 | |
| 428 public synchronized void updateDocument(String keyFieldName,Map<String,Object> storedFields) throws IOException { | |
| 429 indexWriter.updateDocument(keyFieldName,storedFields); | |
| 1486 | 430 writeOp(OP_UPDATE_DOCUMENT); |
| 1465 | 431 log.writeUTF(keyFieldName); |
| 432 log.writeMap(storedFields); | |
| 433 } | |
| 434 | |
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435 public synchronized void tag(String tag) throws IOException { |
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436 writeOp(OP_TAG); |
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437 log.writeUTF(tag); |
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438 } |
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439 |
| 1465 | 440 public synchronized void reindexDocuments(String keyFieldName,Query query) throws IOException { |
| 1461 | 441 indexWriter.reindexDocuments(keyFieldName,query); |
| 442 } | |
| 443 | |
| 1486 | 444 private void writeOp(int op) throws IOException { |
| 1465 | 445 log.writeLong(System.currentTimeMillis()); |
| 446 log.writeByte(op); | |
| 447 } | |
| 448 | |
| 1549 | 449 public synchronized void playLogs(OpDoer opDoer) throws IOException { |
| 450 if( opDoer == null ) | |
| 1551 | 451 opDoer = new BasicOpDoer(indexWriter); |
| 1549 | 452 playLogs( logReaders(logs), opDoer ); |
| 1465 | 453 } |
| 454 | |
| 1548 | 455 private static LogInputStream[] logReaders(LogFile[] logs) throws IOException { |
| 456 LogInputStream[] logReaders = new LogInputStream[logs.length]; | |
| 457 for( int i=0; i<logs.length; i++ ) { | |
| 458 logReaders[i] = logs[i].input(); | |
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459 } |
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460 return logReaders; |
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461 } |
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462 |
| 1549 | 463 private static void playLogs(LogInputStream[] logReaders,OpDoer opDoer) |
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464 throws IOException |
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465 { |
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466 for( LogInputStream reader : logReaders ) { |
| 1549 | 467 playLog(reader,opDoer); |
| 1465 | 468 } |
| 1549 | 469 opDoer.commit(); |
| 1465 | 470 } |
| 471 | |
| 1549 | 472 private static void playLog(LogInputStream in,OpDoer opDoer) |
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473 throws IOException |
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474 { |
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475 while( in.available() > 0 ) { |
| 1549 | 476 playOp(in,opDoer); |
| 1465 | 477 } |
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478 in.close(); |
| 1465 | 479 } |
| 480 | |
| 1549 | 481 private static void playOp(LogInputStream in,OpDoer opDoer) |
| 1548 | 482 throws IOException |
| 483 { | |
| 1549 | 484 long time = in.readLong(); // time |
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485 int op = in.readByte(); |
| 1461 | 486 switch(op) { |
| 487 case OP_DELETE_ALL: | |
| 1549 | 488 opDoer.deleteAll(time); |
| 1548 | 489 return; |
| 1461 | 490 case OP_DELETE_DOCUMENTS: |
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491 { |
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492 Query query = in.readQuery(); |
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493 //System.out.println("OP_DELETE_DOCUMENTS "+query); |
| 1549 | 494 opDoer.deleteDocuments(time,query); |
| 1548 | 495 return; |
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496 } |
| 1461 | 497 case OP_ADD_DOCUMENT: |
| 1465 | 498 { |
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499 Map storedFields = in.readMap(); |
| 1549 | 500 opDoer.addDocument(time,storedFields); |
| 1548 | 501 return; |
| 1465 | 502 } |
| 1461 | 503 case OP_UPDATE_DOCUMENT: |
| 1465 | 504 { |
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505 String keyFieldName = in.readUTF(); |
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506 Map storedFields = in.readMap(); |
| 1549 | 507 opDoer.updateDocument(time,keyFieldName,storedFields); |
| 1548 | 508 return; |
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509 } |
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510 case OP_TAG: |
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511 { |
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512 String tag = in.readUTF(); |
| 1549 | 513 opDoer.tag(time,tag); |
| 1548 | 514 return; |
| 1465 | 515 } |
| 1461 | 516 default: |
| 517 throw new RuntimeException("invalid op "+op); | |
| 518 } | |
| 519 } | |
| 520 | |
| 1465 | 521 private static void dump(LuceneIndexWriter indexWriter) throws IOException { |
| 522 IndexReader reader = indexWriter.openReader(); | |
| 523 IndexSearcher searcher = new IndexSearcher(reader); | |
| 524 Query query = new MatchAllDocsQuery(); | |
| 525 TopDocs td = searcher.search(query,100); | |
| 526 System.out.println("totalHits = "+td.totalHits); | |
| 527 for( int i=0; i<td.scoreDocs.length; i++ ) { | |
| 528 Document doc = searcher.doc(td.scoreDocs[i].doc); | |
| 529 System.out.println(LuceneUtils.toMap(doc)); | |
| 1461 | 530 } |
| 1465 | 531 System.out.println(); |
| 532 reader.close(); | |
| 1461 | 533 } |
| 1465 | 534 |
| 1461 | 535 } |