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annotate src/goodjava/lucene/logging/LoggingIndexWriter.java @ 1539:c27dc6af87ca
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| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Sun, 06 Sep 2020 11:35:30 -0600 |
| parents | 634f6765830e |
| children | 35601f15ecc3 |
| 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.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; | |
| 1539 | 20 import org.apache.lucene.index.IndexWriter; |
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21 import org.apache.lucene.index.Term; |
| 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 |
| 1539 | 83 public IndexWriter getLuceneIndexWriter() { |
| 84 return indexWriter.getLuceneIndexWriter(); | |
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85 } |
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86 |
| 1486 | 87 private void setLog() throws IOException { |
| 88 if( log != null ) | |
| 89 log.close(); | |
| 90 log = logs.get(logs.size()-1).output(); | |
| 91 } | |
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92 /* |
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93 public synchronized boolean isMerging() { |
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94 return mergeLock.isLocked(); |
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95 } |
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96 */ |
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97 private void getMergeLock() { |
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98 try { |
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99 if( !mergeLock.tryLock(1,TimeUnit.MINUTES) ) |
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100 throw new RuntimeException("failed to acquire lock"); |
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101 } catch(InterruptedException e) { |
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102 throw new RuntimeException(e); |
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103 } |
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104 } |
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105 |
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106 public synchronized void newLogs() throws IOException { |
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107 getMergeLock(); |
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108 try { |
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109 newLogs2(); |
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110 } finally { |
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111 mergeLock.unlock(); |
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112 } |
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113 } |
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114 |
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115 private void newLogs2() throws IOException { |
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116 logger.info("building new logs"); |
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117 logs.clear(); |
| 1465 | 118 for( int i=0; i<2; i++ ) { |
| 119 logs.add( newLogFile() ); | |
| 120 } | |
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121 logLucene( System.currentTimeMillis(), logs.get(0), indexWriter ); |
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122 writeIndex(); |
| 1486 | 123 setLog(); |
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124 logger.info("done building new logs"); |
| 1461 | 125 } |
| 126 | |
| 1486 | 127 private static void logLucene(long time,LogFile logLucene,LuceneIndexWriter indexWriter) throws IOException { |
| 128 LogOutputStream log = logLucene.output(); | |
| 1465 | 129 IndexReader reader = indexWriter.openReader(); |
| 130 final IndexSearcher searcher = new IndexSearcher(reader); | |
| 131 Query query = new MatchAllDocsQuery(); | |
| 132 searcher.search( query, new GoodCollector(){ | |
| 133 public void collectDoc(int iDoc) throws IOException { | |
| 134 Document doc = searcher.doc(iDoc); | |
| 135 Map<String,Object> storedFields = LuceneUtils.toMap(doc); | |
| 136 log.writeLong(time); | |
| 137 log.writeByte(OP_ADD_DOCUMENT); | |
| 138 log.writeMap(storedFields); | |
| 139 } | |
| 140 }); | |
| 141 reader.close(); | |
| 142 log.commit(); | |
| 1486 | 143 log.close(); |
| 1465 | 144 } |
| 145 | |
| 146 private LogFile newLogFile() throws IOException { | |
| 147 File file; | |
| 148 do { | |
| 149 file = new File(logDir,"_"+rnd.nextInt(100)+".log"); | |
| 150 } while( file.exists() ); | |
| 1486 | 151 return new LogFile(file); |
| 1461 | 152 } |
| 153 | |
| 1473 | 154 private void deleteUnusedFiles() throws IOException { |
| 1499 | 155 deleteUnusedFiles(logs,index); |
| 156 } | |
| 157 | |
| 158 private static void deleteUnusedFiles(List<LogFile> logs,File index) throws IOException { | |
| 1465 | 159 Set<String> used = new HashSet<String>(); |
| 160 used.add( index.getName() ); | |
| 161 for( LogFile lf : logs ) { | |
| 162 used.add( lf.file.getName() ); | |
| 163 } | |
| 1499 | 164 for( File f : index.getParentFile().listFiles() ) { |
| 1465 | 165 if( !used.contains(f.getName()) ) { |
| 1475 | 166 IoUtils.deleteRecursively(f); |
| 1465 | 167 } |
| 168 } | |
| 1461 | 169 } |
| 170 | |
| 1465 | 171 private void writeIndex() throws IOException { |
| 1499 | 172 writeIndex(logs,index); |
| 173 } | |
| 174 | |
| 175 public static void writeIndex(List<LogFile> logs,File index) throws IOException { | |
| 1465 | 176 ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| 177 DataOutputStream dos = new DataOutputStream(baos); | |
| 178 dos.writeInt(version); | |
| 179 dos.writeInt(logs.size()); | |
| 180 for( LogFile lf : logs ) { | |
| 181 String fileName = lf.file.getName(); | |
| 182 dos.writeUTF(fileName); | |
| 183 } | |
| 184 dos.close(); | |
| 185 RandomAccessFile raf = new RandomAccessFile( index, "rwd" ); | |
| 186 raf.write( baos.toByteArray() ); | |
| 187 raf.close(); | |
| 1499 | 188 deleteUnusedFiles(logs,index); |
| 189 //logger.info("writeIndex "+logs.toString()); | |
| 1461 | 190 } |
| 191 | |
| 1465 | 192 private void mergeLogs() throws IOException { |
| 1512 | 193 //logger.info("merge"); |
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194 if( logs.size() <= 3 ) |
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195 return; |
| 1465 | 196 LogFile first = logs.get(0); |
| 197 LogFile second = logs.get(1); | |
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198 long lastTime = second.file.lastModified(); |
| 1465 | 199 File dirFile = new File(logDir,"merge"); |
| 200 if( dirFile.exists() ) | |
| 201 throw new RuntimeException(); | |
| 202 Directory dir = FSDirectory.open(dirFile); | |
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203 LuceneIndexWriter mergeWriter = new LuceneIndexWriter( dir, indexWriter.goodConfig ); |
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204 playLog( first.input(), mergeWriter ); |
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205 playLog( second.input(), mergeWriter ); |
| 1465 | 206 mergeWriter.commit(); |
| 207 LogFile merge = newLogFile(); | |
| 208 logLucene( lastTime, merge, mergeWriter ); | |
| 209 mergeWriter.close(); | |
| 210 synchronized(this) { | |
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211 //check(); |
| 1465 | 212 logs.remove(0); |
| 213 logs.set(0,merge); | |
| 214 writeIndex(); | |
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215 //check(null); |
| 1465 | 216 } |
| 1461 | 217 } |
| 1465 | 218 private final Runnable mergeLogs = new Runnable() { public void run() { |
| 219 try { | |
| 220 mergeLogs(); | |
| 221 } catch(IOException e) { | |
| 222 throw new RuntimeException(e); | |
| 223 } finally { | |
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224 mergeLock.unlock(); |
| 1465 | 225 } |
| 226 } }; | |
| 1461 | 227 |
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228 private static class DocIter { |
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229 final IndexReader reader; |
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230 final TopDocs td; |
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231 final int n; |
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232 int i = 0; |
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233 |
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234 DocIter(IndexReader reader,Query query,Sort sort) throws IOException { |
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235 this.reader = reader; |
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236 IndexSearcher searcher = new IndexSearcher(reader); |
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237 this.td = searcher.search(query,10000000,sort); |
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238 this.n = td.scoreDocs.length; |
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239 if( td.totalHits != n ) |
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240 throw new RuntimeException(); |
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241 } |
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242 |
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243 Document next() throws IOException { |
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244 return i < n ? reader.document(td.scoreDocs[i++].doc) : null; |
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245 } |
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246 } |
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247 |
| 1487 | 248 private volatile boolean isChecking = false; |
| 249 | |
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250 public boolean check(SortField sortField) throws IOException { |
| 1487 | 251 if( isChecking ) |
| 252 throw new RuntimeException("another check is running"); | |
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253 isChecking = true; |
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254 try { |
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255 return doCheck(sortField); |
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256 } finally { |
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257 isChecking = false; |
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258 } |
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259 } |
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260 |
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261 protected boolean doCheck(SortField sortField) throws IOException { |
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262 boolean ok = true; |
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263 IndexReader indexReader; |
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264 List<LogInputStream> logReaders; |
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265 synchronized(this) { |
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266 indexReader = indexWriter.openReader(); |
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267 logReaders = logReaders(logs); |
| 1465 | 268 } |
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269 try { |
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270 //logger.info("check start"); |
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271 indexWriter.check(); |
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272 File dirFile = new File(logDir,"check"); |
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273 IoUtils.deleteRecursively(dirFile); |
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274 Directory dir = FSDirectory.open(dirFile); |
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275 LuceneIndexWriter checkWriter = new LuceneIndexWriter( dir, indexWriter.goodConfig ); |
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276 playLogs(logReaders,checkWriter); |
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277 //logger.info("check lucene"); |
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278 IndexReader checkReader = checkWriter.openReader(); |
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279 if( sortField == null ) { |
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280 int nCheck = checkReader.numDocs(); |
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281 int nOrig = indexReader.numDocs(); |
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282 if( nCheck != nOrig ) { |
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283 logger.error("numDocs mismatch: lucene="+nOrig+" logs="+nCheck); |
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284 ok = false; |
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285 } |
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286 //logger.info("numDocs="+nOrig); |
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287 if( hash(indexReader) != hash(checkReader) ) { |
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288 logger.error("hash mismatch"); |
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289 ok = false; |
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290 } |
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291 } else { |
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292 Sort sort = new Sort(sortField); |
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293 String sortFieldName = sortField.getField(); |
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294 Query query = new PrefixQuery(new Term(sortFieldName)); |
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295 DocIter origIter = new DocIter(indexReader,query,sort); |
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296 DocIter checkIter = new DocIter(checkReader,query,sort); |
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297 Map<String,Object> origFields = LuceneUtils.toMap(origIter.next()); |
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298 Map<String,Object> checkFields = LuceneUtils.toMap(checkIter.next()); |
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299 while( origFields!=null && checkFields!=null ) { |
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300 Comparable origFld = (Comparable)origFields.get(sortFieldName); |
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301 Comparable checkFld = (Comparable)checkFields.get(sortFieldName); |
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302 int cmp = origFld.compareTo(checkFld); |
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303 if( cmp==0 ) { |
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304 if( !origFields.equals(checkFields) ) { |
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305 logger.error(sortFieldName+" "+origFld+" not equal"); |
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306 logger.error("lucene = "+origFields); |
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307 logger.error("logs = "+checkFields); |
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308 ok = false; |
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309 } |
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310 origFields = LuceneUtils.toMap(origIter.next()); |
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311 checkFields = LuceneUtils.toMap(checkIter.next()); |
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312 } else if( cmp < 0 ) { |
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313 logger.error(sortFieldName+" "+origFld+" found in lucene but not logs"); |
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314 ok = false; |
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315 origFields = LuceneUtils.toMap(origIter.next()); |
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316 } else { // > |
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317 logger.error(sortFieldName+" "+checkFld+" found in logs but not lucene"); |
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318 ok = false; |
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319 checkFields = LuceneUtils.toMap(checkIter.next()); |
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320 } |
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321 } |
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322 while( origFields!=null ) { |
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323 Comparable origFld = (Comparable)origFields.get(sortFieldName); |
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324 logger.error(sortFieldName+" "+origFld+" found in lucene but not logs"); |
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325 ok = false; |
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326 origFields = LuceneUtils.toMap(origIter.next()); |
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327 } |
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328 while( checkFields!=null ) { |
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329 Comparable checkFld = (Comparable)checkFields.get(sortFieldName); |
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330 logger.error(sortFieldName+" "+checkFld+" found in logs but not lucene"); |
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331 ok = false; |
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332 checkFields = LuceneUtils.toMap(checkIter.next()); |
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333 } |
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334 //logger.info("check done"); |
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335 } |
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336 checkReader.close(); |
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337 checkWriter.close(); |
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338 IoUtils.deleteRecursively(dirFile); |
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339 //logger.info("check done"); |
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340 } finally { |
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341 indexReader.close(); |
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342 } |
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343 return ok; |
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344 } |
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345 |
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346 private static abstract class HashCollector extends GoodCollector { |
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347 int total = 0; |
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348 } |
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349 |
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350 private static int hash(IndexReader reader) throws IOException { |
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351 final IndexSearcher searcher = new IndexSearcher(reader); |
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352 Query query = new MatchAllDocsQuery(); |
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353 HashCollector col = new HashCollector() { |
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354 public void collectDoc(int iDoc) throws IOException { |
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355 Document doc = searcher.doc(iDoc); |
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356 Map<String,Object> storedFields = LuceneUtils.toMap(doc); |
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357 total += storedFields.hashCode(); |
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358 } |
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359 }; |
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360 searcher.search(query,col); |
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361 return col.total; |
| 1461 | 362 } |
| 363 | |
| 1465 | 364 public synchronized void close() throws IOException { |
| 365 indexWriter.close(); | |
| 366 log.commit(); | |
| 1486 | 367 log.close(); |
| 1465 | 368 } |
| 369 | |
| 370 public synchronized void commit() throws IOException { | |
| 371 indexWriter.commit(); | |
| 372 log.commit(); | |
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373 if( mergeLock.isLocked() ) |
| 1465 | 374 return; |
| 1486 | 375 if( log.logFile.end() > logs.get(0).end() ) { |
| 1465 | 376 logs.add( newLogFile() ); |
| 377 writeIndex(); | |
| 1486 | 378 setLog(); |
| 1465 | 379 } |
| 380 if( logs.size() > 3 ) { | |
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381 getMergeLock(); |
| 1504 | 382 new Thread(mergeLogs).start(); |
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383 // mergeLogs.run(); |
| 1465 | 384 } |
| 1461 | 385 } |
| 386 | |
| 1465 | 387 public synchronized void rollback() throws IOException { |
| 388 indexWriter.rollback(); | |
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389 log.rollback(); |
| 1465 | 390 } |
| 391 | |
| 392 public synchronized void deleteAll() throws IOException { | |
| 393 indexWriter.deleteAll(); | |
| 1486 | 394 writeOp(OP_DELETE_ALL); |
| 1461 | 395 } |
| 396 | |
| 1465 | 397 public synchronized void deleteDocuments(Query query) throws IOException { |
| 398 indexWriter.deleteDocuments(query); | |
| 1486 | 399 writeOp(OP_DELETE_DOCUMENTS); |
| 1465 | 400 log.writeQuery(query); |
| 401 } | |
| 402 | |
| 403 public synchronized void addDocument(Map<String,Object> storedFields) throws IOException { | |
| 404 indexWriter.addDocument(storedFields); | |
| 1486 | 405 writeOp(OP_ADD_DOCUMENT); |
| 1465 | 406 log.writeMap(storedFields); |
| 407 } | |
| 408 | |
| 409 public synchronized void updateDocument(String keyFieldName,Map<String,Object> storedFields) throws IOException { | |
| 410 indexWriter.updateDocument(keyFieldName,storedFields); | |
| 1486 | 411 writeOp(OP_UPDATE_DOCUMENT); |
| 1465 | 412 log.writeUTF(keyFieldName); |
| 413 log.writeMap(storedFields); | |
| 414 } | |
| 415 | |
| 416 public synchronized void reindexDocuments(String keyFieldName,Query query) throws IOException { | |
| 1461 | 417 indexWriter.reindexDocuments(keyFieldName,query); |
| 418 } | |
| 419 | |
| 1486 | 420 private void writeOp(int op) throws IOException { |
| 1465 | 421 log.writeLong(System.currentTimeMillis()); |
| 422 log.writeByte(op); | |
| 423 } | |
| 424 | |
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425 public synchronized void playLogs() throws IOException { |
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426 playLogs( logReaders(logs), indexWriter ); |
| 1465 | 427 } |
| 428 | |
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429 private static List<LogInputStream> logReaders(List<LogFile> logs) throws IOException { |
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430 List<LogInputStream> logReaders = new ArrayList<LogInputStream>(); |
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431 for( LogFile log : logs ) { |
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432 logReaders.add( log.input() ); |
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433 } |
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434 return logReaders; |
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435 } |
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436 |
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437 private static void playLogs(List<LogInputStream> logReaders,LuceneIndexWriter indexWriter) throws IOException { |
| 1465 | 438 if( numDocs(indexWriter) != 0 ) |
| 439 throw new RuntimeException ("not empty"); | |
|
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440 for( LogInputStream reader : logReaders ) { |
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441 playLog(reader,indexWriter); |
| 1465 | 442 } |
| 443 indexWriter.commit(); | |
| 444 } | |
| 445 | |
| 446 private static int numDocs(LuceneIndexWriter indexWriter) throws IOException { | |
| 447 IndexReader reader = indexWriter.openReader(); | |
| 448 int n = reader.numDocs(); | |
| 449 reader.close(); | |
| 450 return n; | |
| 451 } | |
| 452 | |
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453 private static void playLog(LogInputStream in,LuceneIndexWriter indexWriter) throws IOException { |
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454 while( in.available() > 0 ) { |
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455 playOp(in,indexWriter); |
| 1465 | 456 } |
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457 in.close(); |
| 1465 | 458 } |
| 459 | |
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460 private static void playOp(LogInputStream in,LuceneIndexWriter indexWriter) throws IOException { |
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parents:
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461 in.readLong(); // time |
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462 int op = in.readByte(); |
| 1461 | 463 switch(op) { |
| 464 case OP_DELETE_ALL: | |
| 465 indexWriter.deleteAll(); | |
| 466 return; | |
| 467 case OP_DELETE_DOCUMENTS: | |
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468 indexWriter.deleteDocuments( in.readQuery() ); |
| 1461 | 469 return; |
| 470 case OP_ADD_DOCUMENT: | |
| 1465 | 471 { |
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472 Map storedFields = in.readMap(); |
| 1465 | 473 indexWriter.addDocument(storedFields); |
| 474 return; | |
| 475 } | |
| 1461 | 476 case OP_UPDATE_DOCUMENT: |
| 1465 | 477 { |
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478 String keyFieldName = in.readUTF(); |
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479 Map storedFields = in.readMap(); |
| 1465 | 480 indexWriter.updateDocument(keyFieldName,storedFields); |
| 481 return; | |
| 482 } | |
| 1461 | 483 default: |
| 484 throw new RuntimeException("invalid op "+op); | |
| 485 } | |
| 486 } | |
| 487 | |
| 1465 | 488 private static void dump(LuceneIndexWriter indexWriter) throws IOException { |
| 489 IndexReader reader = indexWriter.openReader(); | |
| 490 IndexSearcher searcher = new IndexSearcher(reader); | |
| 491 Query query = new MatchAllDocsQuery(); | |
| 492 TopDocs td = searcher.search(query,100); | |
| 493 System.out.println("totalHits = "+td.totalHits); | |
| 494 for( int i=0; i<td.scoreDocs.length; i++ ) { | |
| 495 Document doc = searcher.doc(td.scoreDocs[i].doc); | |
| 496 System.out.println(LuceneUtils.toMap(doc)); | |
| 1461 | 497 } |
| 1465 | 498 System.out.println(); |
| 499 reader.close(); | |
| 1461 | 500 } |
| 1465 | 501 |
| 1461 | 502 } |