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annotate src/goodjava/lucene/logging/LoggingIndexWriter.java @ 1482:4c409291090f
minor
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Fri, 24 Apr 2020 21:20:42 -0600 |
| parents | 7d145095cc0b |
| children | 1fa6e8ec2d53 |
| 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; | |
| 16 import org.apache.lucene.document.Document; | |
| 17 import org.apache.lucene.index.DirectoryReader; | |
| 18 import org.apache.lucene.index.IndexReader; | |
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19 import org.apache.lucene.index.Term; |
| 1465 | 20 import org.apache.lucene.search.IndexSearcher; |
| 1461 | 21 import org.apache.lucene.search.Query; |
| 1465 | 22 import org.apache.lucene.search.MatchAllDocsQuery; |
| 23 import org.apache.lucene.search.TopDocs; | |
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24 import org.apache.lucene.search.PrefixQuery; |
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25 import org.apache.lucene.search.SortField; |
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26 import org.apache.lucene.search.Sort; |
| 1465 | 27 import org.apache.lucene.store.Directory; |
| 28 import org.apache.lucene.store.FSDirectory; | |
| 1473 | 29 import goodjava.io.IoUtils; |
| 1461 | 30 import goodjava.lucene.api.GoodIndexWriter; |
| 1465 | 31 import goodjava.lucene.api.LuceneIndexWriter; |
| 32 import goodjava.lucene.api.GoodCollector; | |
| 33 import goodjava.lucene.api.LuceneUtils; | |
| 34 import goodjava.logging.Logger; | |
| 35 import goodjava.logging.LoggerFactory; | |
| 1461 | 36 |
| 37 | |
| 1465 | 38 public final class LoggingIndexWriter implements GoodIndexWriter { |
| 39 private static final Logger logger = LoggerFactory.getLogger(LoggingIndexWriter.class); | |
| 40 private static final int version = 1; | |
| 1461 | 41 private static final int OP_DELETE_ALL = 1; |
| 42 private static final int OP_DELETE_DOCUMENTS = 2; | |
| 43 private static final int OP_ADD_DOCUMENT = 3; | |
| 44 private static final int OP_UPDATE_DOCUMENT = 4; | |
| 1465 | 45 private static final Random rnd = new Random(); |
| 1461 | 46 |
| 1465 | 47 public final LuceneIndexWriter indexWriter; |
| 48 private final File logDir; | |
| 49 private final List<LogFile> logs = new ArrayList<LogFile>(); | |
| 50 private final File index; | |
| 51 private boolean isMerging = false; | |
| 1461 | 52 |
| 1465 | 53 public LoggingIndexWriter(LuceneIndexWriter indexWriter,File logDir) throws IOException { |
| 1461 | 54 this.indexWriter = indexWriter; |
| 1465 | 55 this.logDir = logDir; |
| 56 logDir.mkdirs(); | |
| 57 if( !logDir.isDirectory() ) | |
| 58 throw new RuntimeException(); | |
| 59 index = new File(logDir,"index"); | |
| 60 if( index.exists() ) { | |
| 61 DataInputStream dis = new DataInputStream(new FileInputStream(index)); | |
| 62 try { | |
| 63 if( dis.readInt() == version ) { | |
| 64 final int n = dis.readInt(); | |
| 65 for( int i=0; i<n; i++ ) { | |
| 66 File file = new File( logDir, dis.readUTF() ); | |
| 67 logs.add( new LogFile(file,"rwd") ); | |
| 68 } | |
| 69 deleteUnusedFiles(); | |
| 70 return; | |
| 71 } | |
| 72 } finally { | |
| 73 dis.close(); | |
| 74 } | |
| 75 } | |
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76 newLogs(); |
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77 } |
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78 |
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79 public synchronized boolean isMerging() { |
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80 return isMerging; |
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81 } |
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82 |
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83 private synchronized void isNotMerging() { |
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84 isMerging = false; |
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85 } |
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86 |
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87 public synchronized void newLogs() throws IOException { |
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88 if( isMerging ) |
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89 throw new RuntimeException("merging"); |
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90 logger.info("building new logs"); |
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91 logs.clear(); |
| 1465 | 92 for( int i=0; i<2; i++ ) { |
| 93 logs.add( newLogFile() ); | |
| 94 } | |
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95 logLucene( System.currentTimeMillis(), logs.get(0), indexWriter ); |
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96 writeIndex(); |
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97 logger.info("done building new logs"); |
| 1461 | 98 } |
| 99 | |
| 1465 | 100 private static void logLucene(long time,LogFile log,LuceneIndexWriter indexWriter) throws IOException { |
| 101 IndexReader reader = indexWriter.openReader(); | |
| 102 final IndexSearcher searcher = new IndexSearcher(reader); | |
| 103 Query query = new MatchAllDocsQuery(); | |
| 104 searcher.search( query, new GoodCollector(){ | |
| 105 public void collectDoc(int iDoc) throws IOException { | |
| 106 Document doc = searcher.doc(iDoc); | |
| 107 Map<String,Object> storedFields = LuceneUtils.toMap(doc); | |
| 108 log.writeLong(time); | |
| 109 log.writeByte(OP_ADD_DOCUMENT); | |
| 110 log.writeMap(storedFields); | |
| 111 } | |
| 112 }); | |
| 113 reader.close(); | |
| 114 log.commit(); | |
| 115 } | |
| 116 | |
| 117 private LogFile newLogFile() throws IOException { | |
| 118 File file; | |
| 119 do { | |
| 120 file = new File(logDir,"_"+rnd.nextInt(100)+".log"); | |
| 121 } while( file.exists() ); | |
| 122 return new LogFile(file,"rwd"); | |
| 1461 | 123 } |
| 124 | |
| 1473 | 125 private void deleteUnusedFiles() throws IOException { |
| 1465 | 126 Set<String> used = new HashSet<String>(); |
| 127 used.add( index.getName() ); | |
| 128 for( LogFile lf : logs ) { | |
| 129 used.add( lf.file.getName() ); | |
| 130 } | |
| 131 for( File f : logDir.listFiles() ) { | |
| 132 if( !used.contains(f.getName()) ) { | |
| 1475 | 133 IoUtils.deleteRecursively(f); |
| 1465 | 134 } |
| 135 } | |
| 1461 | 136 } |
| 137 | |
| 1465 | 138 private void writeIndex() throws IOException { |
| 139 ByteArrayOutputStream baos = new ByteArrayOutputStream(); | |
| 140 DataOutputStream dos = new DataOutputStream(baos); | |
| 141 dos.writeInt(version); | |
| 142 dos.writeInt(logs.size()); | |
| 143 for( LogFile lf : logs ) { | |
| 144 String fileName = lf.file.getName(); | |
| 145 dos.writeUTF(fileName); | |
| 146 } | |
| 147 dos.close(); | |
| 148 RandomAccessFile raf = new RandomAccessFile( index, "rwd" ); | |
| 149 raf.write( baos.toByteArray() ); | |
| 150 raf.close(); | |
| 151 deleteUnusedFiles(); | |
| 152 logger.info("writeIndex "+logs.toString()); | |
| 1461 | 153 } |
| 154 | |
| 1465 | 155 private void mergeLogs() throws IOException { |
| 156 logger.info("merge"); | |
| 157 LogFile first = logs.get(0); | |
| 158 LogFile second = logs.get(1); | |
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159 long lastTime = second.file.lastModified(); |
| 1465 | 160 File dirFile = new File(logDir,"merge"); |
| 161 if( dirFile.exists() ) | |
| 162 throw new RuntimeException(); | |
| 163 Directory dir = FSDirectory.open(dirFile); | |
| 164 LuceneIndexWriter mergeWriter = new LuceneIndexWriter( indexWriter.luceneVersion, dir, indexWriter.goodConfig ); | |
| 165 playLog(first,mergeWriter); | |
| 166 playLog(second,mergeWriter); | |
| 167 mergeWriter.commit(); | |
| 168 LogFile merge = newLogFile(); | |
| 169 logLucene( lastTime, merge, mergeWriter ); | |
| 170 mergeWriter.close(); | |
| 171 synchronized(this) { | |
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172 //check(); |
| 1465 | 173 logs.remove(0); |
| 174 logs.set(0,merge); | |
| 175 writeIndex(); | |
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176 //check(null); |
| 1465 | 177 } |
| 1461 | 178 } |
| 1465 | 179 private final Runnable mergeLogs = new Runnable() { public void run() { |
| 180 try { | |
| 181 mergeLogs(); | |
| 182 } catch(IOException e) { | |
| 183 throw new RuntimeException(e); | |
| 184 } finally { | |
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185 isNotMerging(); |
| 1465 | 186 } |
| 187 } }; | |
| 1461 | 188 |
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189 private static class DocIter { |
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190 final IndexReader reader; |
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191 final TopDocs td; |
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192 final int n; |
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193 int i = 0; |
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194 |
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195 DocIter(IndexReader reader,Query query,Sort sort) throws IOException { |
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196 this.reader = reader; |
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197 IndexSearcher searcher = new IndexSearcher(reader); |
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198 this.td = searcher.search(query,10000000,sort); |
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199 this.n = td.scoreDocs.length; |
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200 if( td.totalHits != n ) |
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201 throw new RuntimeException(); |
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202 } |
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203 |
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204 Document next() throws IOException { |
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205 return i < n ? reader.document(td.scoreDocs[i++].doc) : null; |
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206 } |
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207 } |
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208 |
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209 public void check(SortField sortField) throws IOException { |
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210 IndexReader indexReader; |
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211 List<LogFile> logs; |
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212 synchronized(this) { |
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213 if( isMerging ) { |
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214 logger.warn("is merging, check aborted"); |
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215 return; |
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216 } |
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217 isMerging = true; |
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218 indexReader = indexWriter.openReader(); |
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219 logs = new ArrayList<LogFile>(this.logs); |
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220 int i = logs.size() - 1; |
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221 LogFile last = logs.get(i); |
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222 logs.set(i,last.snapshot()); |
| 1465 | 223 } |
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224 try { |
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225 logger.info("check start"); |
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226 indexWriter.check(); |
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227 File dirFile = new File(logDir,"check"); |
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228 IoUtils.deleteRecursively(dirFile); |
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229 Directory dir = FSDirectory.open(dirFile); |
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230 LuceneIndexWriter checkWriter = new LuceneIndexWriter( indexWriter.luceneVersion, dir, indexWriter.goodConfig ); |
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231 playLogs(logs,checkWriter); |
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232 logger.info("check lucene"); |
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233 IndexReader checkReader = checkWriter.openReader(); |
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234 if( sortField == null ) { |
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235 int nCheck = checkReader.numDocs(); |
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236 int nOrig = indexReader.numDocs(); |
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237 if( nCheck != nOrig ) { |
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238 logger.error("numDocs mismatch: lucene="+nOrig+" logs="+nCheck); |
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239 } |
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240 logger.info("numDocs="+nOrig); |
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241 if( hash(indexReader) != hash(checkReader) ) { |
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242 logger.error("hash mismatch"); |
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243 } |
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244 } else { |
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245 Sort sort = new Sort(sortField); |
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246 String sortFieldName = sortField.getField(); |
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247 Query query = new PrefixQuery(new Term(sortFieldName)); |
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248 DocIter origIter = new DocIter(indexReader,query,sort); |
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249 DocIter checkIter = new DocIter(checkReader,query,sort); |
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250 Map<String,Object> origFields = LuceneUtils.toMap(origIter.next()); |
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251 Map<String,Object> checkFields = LuceneUtils.toMap(checkIter.next()); |
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252 while( origFields!=null && checkFields!=null ) { |
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253 Comparable origFld = (Comparable)origFields.get(sortFieldName); |
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254 Comparable checkFld = (Comparable)checkFields.get(sortFieldName); |
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255 int cmp = origFld.compareTo(checkFld); |
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256 if( cmp==0 ) { |
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257 if( !origFields.equals(checkFields) ) { |
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258 logger.error(sortFieldName+" "+origFld+" not equal"); |
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259 logger.error("lucene = "+origFields); |
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260 logger.error("logs = "+checkFields); |
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261 } |
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262 origFields = LuceneUtils.toMap(origIter.next()); |
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263 checkFields = LuceneUtils.toMap(checkIter.next()); |
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264 } else if( cmp < 0 ) { |
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265 logger.error(sortFieldName+" "+origFld+" found in lucene but not logs"); |
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266 origFields = LuceneUtils.toMap(origIter.next()); |
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267 } else { // > |
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268 logger.error(sortFieldName+" "+checkFld+" found in logs but not lucene"); |
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269 checkFields = LuceneUtils.toMap(checkIter.next()); |
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270 } |
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271 } |
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272 while( origFields!=null ) { |
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273 Comparable origFld = (Comparable)origFields.get(sortFieldName); |
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274 logger.error(sortFieldName+" "+origFld+" found in lucene but not logs"); |
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275 origFields = LuceneUtils.toMap(origIter.next()); |
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276 } |
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277 while( checkFields!=null ) { |
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278 Comparable checkFld = (Comparable)checkFields.get(sortFieldName); |
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279 logger.error(sortFieldName+" "+checkFld+" found in logs but not lucene"); |
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280 checkFields = LuceneUtils.toMap(checkIter.next()); |
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281 } |
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282 //logger.info("check done"); |
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283 } |
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284 checkReader.close(); |
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285 checkWriter.close(); |
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286 IoUtils.deleteRecursively(dirFile); |
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287 logger.info("check done"); |
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288 } finally { |
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289 indexReader.close(); |
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290 isNotMerging(); |
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291 } |
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292 } |
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293 |
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294 private static abstract class HashCollector extends GoodCollector { |
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295 int total = 0; |
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296 } |
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297 |
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298 private static int hash(IndexReader reader) throws IOException { |
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299 final IndexSearcher searcher = new IndexSearcher(reader); |
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300 Query query = new MatchAllDocsQuery(); |
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301 HashCollector col = new HashCollector() { |
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302 public void collectDoc(int iDoc) throws IOException { |
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303 Document doc = searcher.doc(iDoc); |
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304 Map<String,Object> storedFields = LuceneUtils.toMap(doc); |
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305 total += storedFields.hashCode(); |
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306 } |
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307 }; |
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308 searcher.search(query,col); |
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309 return col.total; |
| 1461 | 310 } |
| 311 | |
| 1465 | 312 private LogFile log() { |
| 313 return logs.get(logs.size()-1); | |
| 314 } | |
| 315 | |
| 316 public synchronized void close() throws IOException { | |
| 317 indexWriter.close(); | |
| 318 LogFile log = log(); | |
| 319 log.commit(); | |
| 320 } | |
| 321 | |
| 322 public synchronized void commit() throws IOException { | |
| 323 indexWriter.commit(); | |
| 324 LogFile log = log(); | |
| 325 log.commit(); | |
| 326 if( isMerging ) | |
| 327 return; | |
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328 if( log.end() > logs.get(0).end() ) { |
| 1465 | 329 logs.add( newLogFile() ); |
| 330 writeIndex(); | |
| 331 } | |
| 332 if( logs.size() > 3 ) { | |
| 333 isMerging = true; | |
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334 new Thread(mergeLogs).start(); |
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335 // mergeLogs.run(); |
| 1465 | 336 } |
| 1461 | 337 } |
| 338 | |
| 1465 | 339 public synchronized void rollback() throws IOException { |
| 340 indexWriter.rollback(); | |
| 341 LogFile log = log(); | |
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342 log.rollback(); |
| 1465 | 343 } |
| 344 | |
| 345 public synchronized void deleteAll() throws IOException { | |
| 346 indexWriter.deleteAll(); | |
| 347 LogFile log = log(); | |
| 348 writeOp(log,OP_DELETE_ALL); | |
| 1461 | 349 } |
| 350 | |
| 1465 | 351 public synchronized void deleteDocuments(Query query) throws IOException { |
| 352 indexWriter.deleteDocuments(query); | |
| 353 LogFile log = log(); | |
| 354 writeOp(log,OP_DELETE_DOCUMENTS); | |
| 355 log.writeQuery(query); | |
| 356 } | |
| 357 | |
| 358 public synchronized void addDocument(Map<String,Object> storedFields) throws IOException { | |
| 359 indexWriter.addDocument(storedFields); | |
| 360 LogFile log = log(); | |
| 361 writeOp(log,OP_ADD_DOCUMENT); | |
| 362 log.writeMap(storedFields); | |
| 363 } | |
| 364 | |
| 365 public synchronized void updateDocument(String keyFieldName,Map<String,Object> storedFields) throws IOException { | |
| 366 indexWriter.updateDocument(keyFieldName,storedFields); | |
| 367 LogFile log = log(); | |
| 368 writeOp(log,OP_UPDATE_DOCUMENT); | |
| 369 log.writeUTF(keyFieldName); | |
| 370 log.writeMap(storedFields); | |
| 371 } | |
| 372 | |
| 373 public synchronized void reindexDocuments(String keyFieldName,Query query) throws IOException { | |
| 1461 | 374 indexWriter.reindexDocuments(keyFieldName,query); |
| 375 } | |
| 376 | |
| 1465 | 377 private void writeOp(LogFile log,int op) throws IOException { |
| 378 log.writeLong(System.currentTimeMillis()); | |
| 379 log.writeByte(op); | |
| 380 } | |
| 381 | |
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382 public synchronized void playLogs() throws IOException { |
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383 playLogs(logs,indexWriter); |
| 1465 | 384 } |
| 385 | |
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386 private static void playLogs(List<LogFile> logs,LuceneIndexWriter indexWriter) throws IOException { |
| 1465 | 387 if( numDocs(indexWriter) != 0 ) |
| 388 throw new RuntimeException ("not empty"); | |
| 389 for( LogFile log : logs ) { | |
| 390 playLog(log,indexWriter); | |
| 391 } | |
| 392 indexWriter.commit(); | |
| 393 } | |
| 394 | |
| 395 private static int numDocs(LuceneIndexWriter indexWriter) throws IOException { | |
| 396 IndexReader reader = indexWriter.openReader(); | |
| 397 int n = reader.numDocs(); | |
| 398 reader.close(); | |
| 399 return n; | |
| 400 } | |
| 401 | |
| 402 private static void playLog(LogFile log,LuceneIndexWriter indexWriter) throws IOException { | |
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403 LogInputStream in = log.input(); |
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404 while( in.available() > 0 ) { |
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405 playOp(in,indexWriter); |
| 1465 | 406 } |
| 407 } | |
| 408 | |
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409 private static void playOp(LogInputStream in,LuceneIndexWriter indexWriter) throws IOException { |
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410 in.readLong(); // time |
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411 int op = in.readByte(); |
| 1461 | 412 switch(op) { |
| 413 case OP_DELETE_ALL: | |
| 414 indexWriter.deleteAll(); | |
| 415 return; | |
| 416 case OP_DELETE_DOCUMENTS: | |
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417 indexWriter.deleteDocuments( in.readQuery() ); |
| 1461 | 418 return; |
| 419 case OP_ADD_DOCUMENT: | |
| 1465 | 420 { |
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421 Map storedFields = in.readMap(); |
| 1465 | 422 indexWriter.addDocument(storedFields); |
| 423 return; | |
| 424 } | |
| 1461 | 425 case OP_UPDATE_DOCUMENT: |
| 1465 | 426 { |
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427 String keyFieldName = in.readUTF(); |
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428 Map storedFields = in.readMap(); |
| 1465 | 429 indexWriter.updateDocument(keyFieldName,storedFields); |
| 430 return; | |
| 431 } | |
| 1461 | 432 default: |
| 433 throw new RuntimeException("invalid op "+op); | |
| 434 } | |
| 435 } | |
| 436 | |
| 1465 | 437 private static void dump(LuceneIndexWriter indexWriter) throws IOException { |
| 438 IndexReader reader = indexWriter.openReader(); | |
| 439 IndexSearcher searcher = new IndexSearcher(reader); | |
| 440 Query query = new MatchAllDocsQuery(); | |
| 441 TopDocs td = searcher.search(query,100); | |
| 442 System.out.println("totalHits = "+td.totalHits); | |
| 443 for( int i=0; i<td.scoreDocs.length; i++ ) { | |
| 444 Document doc = searcher.doc(td.scoreDocs[i].doc); | |
| 445 System.out.println(LuceneUtils.toMap(doc)); | |
| 1461 | 446 } |
| 1465 | 447 System.out.println(); |
| 448 reader.close(); | |
| 1461 | 449 } |
| 1465 | 450 |
| 1461 | 451 } |