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annotate src/goodjava/lucene/logging/LoggingIndexWriter.java @ 1538:634f6765830e
use goodjava/lucene/logging
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Fri, 07 Aug 2020 21:42:16 -0600 |
| parents | 3bd4d7963456 |
| children | c27dc6af87ca |
| rev | line source |
|---|---|
| 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.List; | |
| 14 import java.util.ArrayList; | |
| 15 import java.util.Random; | |
|
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16 import java.util.concurrent.TimeUnit; |
| 1465 | 17 import org.apache.lucene.document.Document; |
| 18 import org.apache.lucene.index.DirectoryReader; | |
| 19 import org.apache.lucene.index.IndexReader; | |
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20 import org.apache.lucene.index.Term; |
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21 import org.apache.lucene.index.LiveIndexWriterConfig; |
| 1465 | 22 import org.apache.lucene.search.IndexSearcher; |
| 1461 | 23 import org.apache.lucene.search.Query; |
| 1465 | 24 import org.apache.lucene.search.MatchAllDocsQuery; |
| 25 import org.apache.lucene.search.TopDocs; | |
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26 import org.apache.lucene.search.PrefixQuery; |
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27 import org.apache.lucene.search.SortField; |
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28 import org.apache.lucene.search.Sort; |
| 1465 | 29 import org.apache.lucene.store.Directory; |
| 30 import org.apache.lucene.store.FSDirectory; | |
| 1473 | 31 import goodjava.io.IoUtils; |
| 1461 | 32 import goodjava.lucene.api.GoodIndexWriter; |
| 1465 | 33 import goodjava.lucene.api.LuceneIndexWriter; |
| 34 import goodjava.lucene.api.GoodCollector; | |
| 35 import goodjava.lucene.api.LuceneUtils; | |
| 36 import goodjava.logging.Logger; | |
| 37 import goodjava.logging.LoggerFactory; | |
| 1461 | 38 |
| 39 | |
| 1488 | 40 public class LoggingIndexWriter implements GoodIndexWriter { |
| 1465 | 41 private static final Logger logger = LoggerFactory.getLogger(LoggingIndexWriter.class); |
| 42 private static final int version = 1; | |
| 1461 | 43 private static final int OP_DELETE_ALL = 1; |
| 44 private static final int OP_DELETE_DOCUMENTS = 2; | |
| 45 private static final int OP_ADD_DOCUMENT = 3; | |
| 46 private static final int OP_UPDATE_DOCUMENT = 4; | |
| 1465 | 47 private static final Random rnd = new Random(); |
| 1461 | 48 |
| 1465 | 49 public final LuceneIndexWriter indexWriter; |
| 50 private final File logDir; | |
| 1488 | 51 protected final List<LogFile> logs = new ArrayList<LogFile>(); |
| 1486 | 52 private LogOutputStream log; |
| 1465 | 53 private final File index; |
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54 private final SemaphoreLock mergeLock = new SemaphoreLock(); |
| 1461 | 55 |
| 1465 | 56 public LoggingIndexWriter(LuceneIndexWriter indexWriter,File logDir) throws IOException { |
| 1461 | 57 this.indexWriter = indexWriter; |
| 1465 | 58 this.logDir = logDir; |
| 1501 | 59 IoUtils.mkdirs(logDir); |
| 1465 | 60 if( !logDir.isDirectory() ) |
| 61 throw new RuntimeException(); | |
| 62 index = new File(logDir,"index"); | |
| 63 if( index.exists() ) { | |
| 64 DataInputStream dis = new DataInputStream(new FileInputStream(index)); | |
| 65 try { | |
| 66 if( dis.readInt() == version ) { | |
| 67 final int n = dis.readInt(); | |
| 68 for( int i=0; i<n; i++ ) { | |
| 69 File file = new File( logDir, dis.readUTF() ); | |
| 1486 | 70 logs.add( new LogFile(file) ); |
| 1465 | 71 } |
| 72 deleteUnusedFiles(); | |
| 1486 | 73 setLog(); |
| 1465 | 74 return; |
| 75 } | |
| 76 } finally { | |
| 77 dis.close(); | |
| 78 } | |
| 79 } | |
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80 newLogs(); |
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81 } |
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82 |
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83 public Directory getDirectory() { |
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84 return indexWriter.getDirectory(); |
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85 } |
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86 |
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87 public LiveIndexWriterConfig getLuceneConfig() { |
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88 return indexWriter.getLuceneConfig(); |
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89 } |
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90 |
| 1486 | 91 private void setLog() throws IOException { |
| 92 if( log != null ) | |
| 93 log.close(); | |
| 94 log = logs.get(logs.size()-1).output(); | |
| 95 } | |
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96 /* |
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97 public synchronized boolean isMerging() { |
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98 return mergeLock.isLocked(); |
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99 } |
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100 */ |
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101 private void getMergeLock() { |
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102 try { |
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103 if( !mergeLock.tryLock(1,TimeUnit.MINUTES) ) |
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104 throw new RuntimeException("failed to acquire lock"); |
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105 } catch(InterruptedException e) { |
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106 throw new RuntimeException(e); |
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107 } |
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108 } |
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109 |
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110 public synchronized void newLogs() throws IOException { |
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111 getMergeLock(); |
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112 try { |
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113 newLogs2(); |
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114 } finally { |
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115 mergeLock.unlock(); |
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116 } |
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117 } |
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118 |
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119 private void newLogs2() throws IOException { |
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120 logger.info("building new logs"); |
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121 logs.clear(); |
| 1465 | 122 for( int i=0; i<2; i++ ) { |
| 123 logs.add( newLogFile() ); | |
| 124 } | |
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125 logLucene( System.currentTimeMillis(), logs.get(0), indexWriter ); |
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126 writeIndex(); |
| 1486 | 127 setLog(); |
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128 logger.info("done building new logs"); |
| 1461 | 129 } |
| 130 | |
| 1486 | 131 private static void logLucene(long time,LogFile logLucene,LuceneIndexWriter indexWriter) throws IOException { |
| 132 LogOutputStream log = logLucene.output(); | |
| 1465 | 133 IndexReader reader = indexWriter.openReader(); |
| 134 final IndexSearcher searcher = new IndexSearcher(reader); | |
| 135 Query query = new MatchAllDocsQuery(); | |
| 136 searcher.search( query, new GoodCollector(){ | |
| 137 public void collectDoc(int iDoc) throws IOException { | |
| 138 Document doc = searcher.doc(iDoc); | |
| 139 Map<String,Object> storedFields = LuceneUtils.toMap(doc); | |
| 140 log.writeLong(time); | |
| 141 log.writeByte(OP_ADD_DOCUMENT); | |
| 142 log.writeMap(storedFields); | |
| 143 } | |
| 144 }); | |
| 145 reader.close(); | |
| 146 log.commit(); | |
| 1486 | 147 log.close(); |
| 1465 | 148 } |
| 149 | |
| 150 private LogFile newLogFile() throws IOException { | |
| 151 File file; | |
| 152 do { | |
| 153 file = new File(logDir,"_"+rnd.nextInt(100)+".log"); | |
| 154 } while( file.exists() ); | |
| 1486 | 155 return new LogFile(file); |
| 1461 | 156 } |
| 157 | |
| 1473 | 158 private void deleteUnusedFiles() throws IOException { |
| 1499 | 159 deleteUnusedFiles(logs,index); |
| 160 } | |
| 161 | |
| 162 private static void deleteUnusedFiles(List<LogFile> logs,File index) throws IOException { | |
| 1465 | 163 Set<String> used = new HashSet<String>(); |
| 164 used.add( index.getName() ); | |
| 165 for( LogFile lf : logs ) { | |
| 166 used.add( lf.file.getName() ); | |
| 167 } | |
| 1499 | 168 for( File f : index.getParentFile().listFiles() ) { |
| 1465 | 169 if( !used.contains(f.getName()) ) { |
| 1475 | 170 IoUtils.deleteRecursively(f); |
| 1465 | 171 } |
| 172 } | |
| 1461 | 173 } |
| 174 | |
| 1465 | 175 private void writeIndex() throws IOException { |
| 1499 | 176 writeIndex(logs,index); |
| 177 } | |
| 178 | |
| 179 public static void writeIndex(List<LogFile> logs,File index) throws IOException { | |
| 1465 | 180 ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| 181 DataOutputStream dos = new DataOutputStream(baos); | |
| 182 dos.writeInt(version); | |
| 183 dos.writeInt(logs.size()); | |
| 184 for( LogFile lf : logs ) { | |
| 185 String fileName = lf.file.getName(); | |
| 186 dos.writeUTF(fileName); | |
| 187 } | |
| 188 dos.close(); | |
| 189 RandomAccessFile raf = new RandomAccessFile( index, "rwd" ); | |
| 190 raf.write( baos.toByteArray() ); | |
| 191 raf.close(); | |
| 1499 | 192 deleteUnusedFiles(logs,index); |
| 193 //logger.info("writeIndex "+logs.toString()); | |
| 1461 | 194 } |
| 195 | |
| 1465 | 196 private void mergeLogs() throws IOException { |
| 1512 | 197 //logger.info("merge"); |
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198 if( logs.size() <= 3 ) |
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199 return; |
| 1465 | 200 LogFile first = logs.get(0); |
| 201 LogFile second = logs.get(1); | |
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202 long lastTime = second.file.lastModified(); |
| 1465 | 203 File dirFile = new File(logDir,"merge"); |
| 204 if( dirFile.exists() ) | |
| 205 throw new RuntimeException(); | |
| 206 Directory dir = FSDirectory.open(dirFile); | |
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207 LuceneIndexWriter mergeWriter = new LuceneIndexWriter( dir, indexWriter.goodConfig ); |
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208 playLog( first.input(), mergeWriter ); |
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209 playLog( second.input(), mergeWriter ); |
| 1465 | 210 mergeWriter.commit(); |
| 211 LogFile merge = newLogFile(); | |
| 212 logLucene( lastTime, merge, mergeWriter ); | |
| 213 mergeWriter.close(); | |
| 214 synchronized(this) { | |
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215 //check(); |
| 1465 | 216 logs.remove(0); |
| 217 logs.set(0,merge); | |
| 218 writeIndex(); | |
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219 //check(null); |
| 1465 | 220 } |
| 1461 | 221 } |
| 1465 | 222 private final Runnable mergeLogs = new Runnable() { public void run() { |
| 223 try { | |
| 224 mergeLogs(); | |
| 225 } catch(IOException e) { | |
| 226 throw new RuntimeException(e); | |
| 227 } finally { | |
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228 mergeLock.unlock(); |
| 1465 | 229 } |
| 230 } }; | |
| 1461 | 231 |
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232 private static class DocIter { |
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233 final IndexReader reader; |
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234 final TopDocs td; |
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235 final int n; |
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236 int i = 0; |
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237 |
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238 DocIter(IndexReader reader,Query query,Sort sort) throws IOException { |
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239 this.reader = reader; |
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240 IndexSearcher searcher = new IndexSearcher(reader); |
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241 this.td = searcher.search(query,10000000,sort); |
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242 this.n = td.scoreDocs.length; |
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243 if( td.totalHits != n ) |
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244 throw new RuntimeException(); |
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245 } |
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246 |
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247 Document next() throws IOException { |
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248 return i < n ? reader.document(td.scoreDocs[i++].doc) : null; |
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249 } |
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250 } |
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251 |
| 1487 | 252 private volatile boolean isChecking = false; |
| 253 | |
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254 public boolean check(SortField sortField) throws IOException { |
| 1487 | 255 if( isChecking ) |
| 256 throw new RuntimeException("another check is running"); | |
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257 isChecking = true; |
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258 try { |
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259 return doCheck(sortField); |
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260 } finally { |
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261 isChecking = false; |
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262 } |
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263 } |
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264 |
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265 protected boolean doCheck(SortField sortField) throws IOException { |
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266 boolean ok = true; |
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267 IndexReader indexReader; |
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268 List<LogInputStream> logReaders; |
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269 synchronized(this) { |
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270 indexReader = indexWriter.openReader(); |
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271 logReaders = logReaders(logs); |
| 1465 | 272 } |
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273 try { |
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274 //logger.info("check start"); |
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275 indexWriter.check(); |
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276 File dirFile = new File(logDir,"check"); |
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277 IoUtils.deleteRecursively(dirFile); |
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278 Directory dir = FSDirectory.open(dirFile); |
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279 LuceneIndexWriter checkWriter = new LuceneIndexWriter( dir, indexWriter.goodConfig ); |
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280 playLogs(logReaders,checkWriter); |
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281 //logger.info("check lucene"); |
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282 IndexReader checkReader = checkWriter.openReader(); |
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283 if( sortField == null ) { |
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284 int nCheck = checkReader.numDocs(); |
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285 int nOrig = indexReader.numDocs(); |
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286 if( nCheck != nOrig ) { |
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287 logger.error("numDocs mismatch: lucene="+nOrig+" logs="+nCheck); |
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288 ok = false; |
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289 } |
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290 //logger.info("numDocs="+nOrig); |
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291 if( hash(indexReader) != hash(checkReader) ) { |
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292 logger.error("hash mismatch"); |
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293 ok = false; |
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294 } |
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295 } else { |
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296 Sort sort = new Sort(sortField); |
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297 String sortFieldName = sortField.getField(); |
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298 Query query = new PrefixQuery(new Term(sortFieldName)); |
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299 DocIter origIter = new DocIter(indexReader,query,sort); |
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300 DocIter checkIter = new DocIter(checkReader,query,sort); |
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301 Map<String,Object> origFields = LuceneUtils.toMap(origIter.next()); |
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302 Map<String,Object> checkFields = LuceneUtils.toMap(checkIter.next()); |
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303 while( origFields!=null && checkFields!=null ) { |
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304 Comparable origFld = (Comparable)origFields.get(sortFieldName); |
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305 Comparable checkFld = (Comparable)checkFields.get(sortFieldName); |
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306 int cmp = origFld.compareTo(checkFld); |
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307 if( cmp==0 ) { |
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308 if( !origFields.equals(checkFields) ) { |
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309 logger.error(sortFieldName+" "+origFld+" not equal"); |
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310 logger.error("lucene = "+origFields); |
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311 logger.error("logs = "+checkFields); |
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312 ok = false; |
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313 } |
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314 origFields = LuceneUtils.toMap(origIter.next()); |
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315 checkFields = LuceneUtils.toMap(checkIter.next()); |
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316 } else if( cmp < 0 ) { |
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317 logger.error(sortFieldName+" "+origFld+" found in lucene but not logs"); |
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318 ok = false; |
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319 origFields = LuceneUtils.toMap(origIter.next()); |
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320 } else { // > |
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321 logger.error(sortFieldName+" "+checkFld+" found in logs but not lucene"); |
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322 ok = false; |
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323 checkFields = LuceneUtils.toMap(checkIter.next()); |
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324 } |
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325 } |
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326 while( origFields!=null ) { |
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327 Comparable origFld = (Comparable)origFields.get(sortFieldName); |
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328 logger.error(sortFieldName+" "+origFld+" found in lucene but not logs"); |
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329 ok = false; |
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330 origFields = LuceneUtils.toMap(origIter.next()); |
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331 } |
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332 while( checkFields!=null ) { |
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333 Comparable checkFld = (Comparable)checkFields.get(sortFieldName); |
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334 logger.error(sortFieldName+" "+checkFld+" found in logs but not lucene"); |
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335 ok = false; |
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336 checkFields = LuceneUtils.toMap(checkIter.next()); |
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337 } |
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338 //logger.info("check done"); |
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339 } |
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340 checkReader.close(); |
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341 checkWriter.close(); |
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342 IoUtils.deleteRecursively(dirFile); |
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343 //logger.info("check done"); |
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344 } finally { |
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345 indexReader.close(); |
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346 } |
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347 return ok; |
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348 } |
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349 |
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350 private static abstract class HashCollector extends GoodCollector { |
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351 int total = 0; |
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352 } |
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353 |
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354 private static int hash(IndexReader reader) throws IOException { |
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355 final IndexSearcher searcher = new IndexSearcher(reader); |
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356 Query query = new MatchAllDocsQuery(); |
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357 HashCollector col = new HashCollector() { |
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358 public void collectDoc(int iDoc) throws IOException { |
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359 Document doc = searcher.doc(iDoc); |
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360 Map<String,Object> storedFields = LuceneUtils.toMap(doc); |
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361 total += storedFields.hashCode(); |
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362 } |
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363 }; |
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364 searcher.search(query,col); |
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365 return col.total; |
| 1461 | 366 } |
| 367 | |
| 1465 | 368 public synchronized void close() throws IOException { |
| 369 indexWriter.close(); | |
| 370 log.commit(); | |
| 1486 | 371 log.close(); |
| 1465 | 372 } |
| 373 | |
| 374 public synchronized void commit() throws IOException { | |
| 375 indexWriter.commit(); | |
| 376 log.commit(); | |
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377 if( mergeLock.isLocked() ) |
| 1465 | 378 return; |
| 1486 | 379 if( log.logFile.end() > logs.get(0).end() ) { |
| 1465 | 380 logs.add( newLogFile() ); |
| 381 writeIndex(); | |
| 1486 | 382 setLog(); |
| 1465 | 383 } |
| 384 if( logs.size() > 3 ) { | |
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385 getMergeLock(); |
| 1504 | 386 new Thread(mergeLogs).start(); |
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387 // mergeLogs.run(); |
| 1465 | 388 } |
| 1461 | 389 } |
| 390 | |
| 1465 | 391 public synchronized void rollback() throws IOException { |
| 392 indexWriter.rollback(); | |
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393 log.rollback(); |
| 1465 | 394 } |
| 395 | |
| 396 public synchronized void deleteAll() throws IOException { | |
| 397 indexWriter.deleteAll(); | |
| 1486 | 398 writeOp(OP_DELETE_ALL); |
| 1461 | 399 } |
| 400 | |
| 1465 | 401 public synchronized void deleteDocuments(Query query) throws IOException { |
| 402 indexWriter.deleteDocuments(query); | |
| 1486 | 403 writeOp(OP_DELETE_DOCUMENTS); |
| 1465 | 404 log.writeQuery(query); |
| 405 } | |
| 406 | |
| 407 public synchronized void addDocument(Map<String,Object> storedFields) throws IOException { | |
| 408 indexWriter.addDocument(storedFields); | |
| 1486 | 409 writeOp(OP_ADD_DOCUMENT); |
| 1465 | 410 log.writeMap(storedFields); |
| 411 } | |
| 412 | |
| 413 public synchronized void updateDocument(String keyFieldName,Map<String,Object> storedFields) throws IOException { | |
| 414 indexWriter.updateDocument(keyFieldName,storedFields); | |
| 1486 | 415 writeOp(OP_UPDATE_DOCUMENT); |
| 1465 | 416 log.writeUTF(keyFieldName); |
| 417 log.writeMap(storedFields); | |
| 418 } | |
| 419 | |
| 420 public synchronized void reindexDocuments(String keyFieldName,Query query) throws IOException { | |
| 1461 | 421 indexWriter.reindexDocuments(keyFieldName,query); |
| 422 } | |
| 423 | |
| 1486 | 424 private void writeOp(int op) throws IOException { |
| 1465 | 425 log.writeLong(System.currentTimeMillis()); |
| 426 log.writeByte(op); | |
| 427 } | |
| 428 | |
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429 public synchronized void playLogs() throws IOException { |
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430 playLogs( logReaders(logs), indexWriter ); |
| 1465 | 431 } |
| 432 | |
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433 private static List<LogInputStream> logReaders(List<LogFile> logs) throws IOException { |
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434 List<LogInputStream> logReaders = new ArrayList<LogInputStream>(); |
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435 for( LogFile log : logs ) { |
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436 logReaders.add( log.input() ); |
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437 } |
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438 return logReaders; |
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439 } |
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440 |
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441 private static void playLogs(List<LogInputStream> logReaders,LuceneIndexWriter indexWriter) throws IOException { |
| 1465 | 442 if( numDocs(indexWriter) != 0 ) |
| 443 throw new RuntimeException ("not empty"); | |
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444 for( LogInputStream reader : logReaders ) { |
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445 playLog(reader,indexWriter); |
| 1465 | 446 } |
| 447 indexWriter.commit(); | |
| 448 } | |
| 449 | |
| 450 private static int numDocs(LuceneIndexWriter indexWriter) throws IOException { | |
| 451 IndexReader reader = indexWriter.openReader(); | |
| 452 int n = reader.numDocs(); | |
| 453 reader.close(); | |
| 454 return n; | |
| 455 } | |
| 456 | |
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457 private static void playLog(LogInputStream in,LuceneIndexWriter indexWriter) throws IOException { |
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458 while( in.available() > 0 ) { |
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459 playOp(in,indexWriter); |
| 1465 | 460 } |
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461 in.close(); |
| 1465 | 462 } |
| 463 | |
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464 private static void playOp(LogInputStream in,LuceneIndexWriter indexWriter) throws IOException { |
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465 in.readLong(); // time |
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466 int op = in.readByte(); |
| 1461 | 467 switch(op) { |
| 468 case OP_DELETE_ALL: | |
| 469 indexWriter.deleteAll(); | |
| 470 return; | |
| 471 case OP_DELETE_DOCUMENTS: | |
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472 indexWriter.deleteDocuments( in.readQuery() ); |
| 1461 | 473 return; |
| 474 case OP_ADD_DOCUMENT: | |
| 1465 | 475 { |
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476 Map storedFields = in.readMap(); |
| 1465 | 477 indexWriter.addDocument(storedFields); |
| 478 return; | |
| 479 } | |
| 1461 | 480 case OP_UPDATE_DOCUMENT: |
| 1465 | 481 { |
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482 String keyFieldName = in.readUTF(); |
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483 Map storedFields = in.readMap(); |
| 1465 | 484 indexWriter.updateDocument(keyFieldName,storedFields); |
| 485 return; | |
| 486 } | |
| 1461 | 487 default: |
| 488 throw new RuntimeException("invalid op "+op); | |
| 489 } | |
| 490 } | |
| 491 | |
| 1465 | 492 private static void dump(LuceneIndexWriter indexWriter) throws IOException { |
| 493 IndexReader reader = indexWriter.openReader(); | |
| 494 IndexSearcher searcher = new IndexSearcher(reader); | |
| 495 Query query = new MatchAllDocsQuery(); | |
| 496 TopDocs td = searcher.search(query,100); | |
| 497 System.out.println("totalHits = "+td.totalHits); | |
| 498 for( int i=0; i<td.scoreDocs.length; i++ ) { | |
| 499 Document doc = searcher.doc(td.scoreDocs[i].doc); | |
| 500 System.out.println(LuceneUtils.toMap(doc)); | |
| 1461 | 501 } |
| 1465 | 502 System.out.println(); |
| 503 reader.close(); | |
| 1461 | 504 } |
| 1465 | 505 |
| 1461 | 506 } |