Mercurial Hosting > luan
annotate src/goodjava/lucene/logging/LogFile.java @ 1483:97740900c820
minor
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Sat, 25 Apr 2020 10:31:49 -0600 |
| parents | 3cff066f3bbc |
| children | 1fa6e8ec2d53 |
| rev | line source |
|---|---|
| 1461 | 1 package goodjava.lucene.logging; |
| 2 | |
| 3 import java.io.File; | |
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4 import java.io.InputStream; |
| 1481 | 5 import java.io.OutputStream; |
| 6 import java.io.BufferedOutputStream; | |
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7 import java.io.DataOutputStream; |
| 1461 | 8 import java.io.RandomAccessFile; |
| 1480 | 9 import java.io.FileInputStream; |
| 1481 | 10 import java.io.FileOutputStream; |
| 1461 | 11 import java.io.IOException; |
| 12 import java.util.List; | |
| 13 import java.util.Map; | |
| 14 import org.apache.lucene.index.Term; | |
| 15 import org.apache.lucene.search.Query; | |
| 16 import org.apache.lucene.search.MatchAllDocsQuery; | |
| 17 import org.apache.lucene.search.TermQuery; | |
| 18 import org.apache.lucene.search.PrefixQuery; | |
| 19 import org.apache.lucene.search.WildcardQuery; | |
| 20 import org.apache.lucene.search.TermRangeQuery; | |
| 21 import org.apache.lucene.search.PhraseQuery; | |
| 22 import org.apache.lucene.search.NumericRangeQuery; | |
| 23 import org.apache.lucene.search.BooleanQuery; | |
| 24 import org.apache.lucene.search.BooleanClause; | |
| 25 import org.apache.lucene.util.BytesRef; | |
| 1465 | 26 import goodjava.logging.Logger; |
| 27 import goodjava.logging.LoggerFactory; | |
| 1480 | 28 import goodjava.io.LimitedInputStream; |
| 29 import goodjava.io.BufferedInputStream; | |
| 1461 | 30 |
| 31 | |
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32 public class LogFile { |
| 1465 | 33 private static final Logger logger = LoggerFactory.getLogger(LogFile.class); |
| 34 public final File file; | |
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35 private final RandomAccessFile raf; |
| 1481 | 36 private final DataOutputStream out; |
| 1461 | 37 private long end; |
| 38 | |
| 39 public LogFile(File file,String mode) throws IOException { | |
| 1465 | 40 this.file = file; |
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41 this.raf = new RandomAccessFile(file,mode); |
| 1481 | 42 OutputStream out = new FileOutputStream(raf.getFD()); |
| 43 out = new BufferedOutputStream(out); | |
| 44 this.out = new DataOutputStream(out); | |
| 1461 | 45 init(); |
| 46 } | |
| 47 | |
| 48 private void init() throws IOException { | |
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49 if( raf.length() == 0 ) { |
| 1461 | 50 end = 8; |
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51 raf.writeLong(end); |
| 1461 | 52 } else { |
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53 raf.seek(0L); |
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54 end = raf.readLong(); |
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55 raf.seek(end); |
| 1461 | 56 } |
| 57 } | |
| 58 | |
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59 private LogFile(LogFile lf) throws IOException { |
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60 this.file = lf.file; |
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61 this.raf = new RandomAccessFile(file,"r"); |
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62 this.out = null; |
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63 this.end = lf.end; |
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64 } |
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65 |
| 1481 | 66 public void close() throws IOException { |
| 67 raf.close(); | |
| 68 } | |
| 69 | |
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70 public LogFile snapshot() throws IOException { |
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71 return new LogFile(this); |
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72 } |
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73 |
| 1465 | 74 public String toString() { |
| 75 return "LogFile<" + file.getName() + ">"; | |
| 76 } | |
| 77 | |
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78 public long end() { |
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79 return end; |
| 1461 | 80 } |
| 81 | |
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82 public LogInputStream input() throws IOException { |
| 1480 | 83 InputStream in = new FileInputStream(file); |
| 84 in = new LimitedInputStream(in,end); | |
| 85 in = new BufferedInputStream(in); | |
| 86 LogInputStream lis = newLogInputStream(in); | |
| 87 lis.readLong(); // skip end | |
| 88 return lis; | |
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89 } |
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90 |
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91 protected LogInputStream newLogInputStream(InputStream in) { |
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92 return new LogInputStream(in); |
| 1461 | 93 } |
| 94 | |
| 95 public void commit() throws IOException { | |
| 1481 | 96 out.flush(); |
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97 end = raf.getFilePointer(); |
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98 raf.seek(0L); |
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99 raf.writeLong(end); |
| 1481 | 100 raf.seek(end); |
| 1461 | 101 } |
| 102 | |
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103 public void rollback() throws IOException { |
| 1481 | 104 out.flush(); |
| 105 raf.seek(end); | |
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106 } |
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107 |
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108 static final int TYPE_NULL = 0; |
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109 static final int TYPE_STRING = 1; |
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110 static final int TYPE_INT = 2; |
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111 static final int TYPE_LONG = 3; |
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112 static final int TYPE_FLOAT = 4; |
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113 static final int TYPE_DOUBLE = 5; |
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114 static final int TYPE_BYTES = 6; |
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115 static final int TYPE_LIST = 7; |
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116 static final int TYPE_QUERY_MATCH_ALL_DOCS = 8; |
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117 static final int TYPE_QUERY_TERM = 9; |
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118 static final int TYPE_QUERY_PREFIX = 10; |
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119 static final int TYPE_QUERY_WILDCARD = 11; |
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120 static final int TYPE_QUERY_TERM_RANGE = 12; |
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121 static final int TYPE_QUERY_PHRASE = 13; |
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122 static final int TYPE_QUERY_NUMERIC_RANGE = 14; |
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123 static final int TYPE_QUERY_BOOLEAN = 15; |
| 1461 | 124 |
| 125 public void writeObject(Object obj) throws IOException { | |
| 126 if( obj==null ) { | |
| 127 writeByte(TYPE_NULL); | |
| 128 return; | |
| 129 } | |
| 130 if( obj instanceof String ) { | |
| 131 writeByte(TYPE_STRING); | |
| 132 writeUTF((String)obj); | |
| 133 return; | |
| 134 } | |
| 135 if( obj instanceof Integer ) { | |
| 136 writeByte(TYPE_INT); | |
| 137 writeInt((Integer)obj); | |
| 138 return; | |
| 139 } | |
| 140 if( obj instanceof Long ) { | |
| 141 writeByte(TYPE_LONG); | |
| 142 writeLong((Long)obj); | |
| 143 return; | |
| 144 } | |
| 145 if( obj instanceof Float ) { | |
| 146 writeByte(TYPE_FLOAT); | |
| 147 writeFloat((Float)obj); | |
| 148 return; | |
| 149 } | |
| 150 if( obj instanceof Double ) { | |
| 151 writeByte(TYPE_DOUBLE); | |
| 152 writeDouble((Double)obj); | |
| 153 return; | |
| 154 } | |
| 155 if( obj instanceof byte[] ) { | |
| 156 writeByte(TYPE_BYTES); | |
| 157 writeByteArray((byte[])obj); | |
| 158 return; | |
| 159 } | |
| 160 if( obj instanceof List ) { | |
| 161 writeByte(TYPE_LIST); | |
| 162 writeList((List)obj); | |
| 163 return; | |
| 164 } | |
| 165 if( obj instanceof MatchAllDocsQuery ) { | |
| 166 writeByte(TYPE_QUERY_MATCH_ALL_DOCS); | |
| 167 return; | |
| 168 } | |
| 169 if( obj instanceof TermQuery ) { | |
| 170 writeByte(TYPE_QUERY_TERM); | |
| 171 TermQuery query = (TermQuery)obj; | |
| 172 writeTerm( query.getTerm() ); | |
| 173 return; | |
| 174 } | |
| 175 if( obj instanceof PrefixQuery ) { | |
| 176 writeByte(TYPE_QUERY_PREFIX); | |
| 177 PrefixQuery query = (PrefixQuery)obj; | |
| 178 writeTerm( query.getPrefix() ); | |
| 179 return; | |
| 180 } | |
| 181 if( obj instanceof WildcardQuery ) { | |
| 182 writeByte(TYPE_QUERY_TERM_RANGE); | |
| 183 WildcardQuery query = (WildcardQuery)obj; | |
| 184 writeTerm( query.getTerm() ); | |
| 185 return; | |
| 186 } | |
| 187 if( obj instanceof TermRangeQuery ) { | |
| 188 writeByte(TYPE_QUERY_TERM_RANGE); | |
| 189 TermRangeQuery query = (TermRangeQuery)obj; | |
| 190 writeUTF( query.getField() ); | |
| 191 writeBytesRef( query.getLowerTerm() ); | |
| 192 writeBytesRef( query.getUpperTerm() ); | |
| 193 writeBoolean( query.includesLower() ); | |
| 194 writeBoolean( query.includesUpper() ); | |
| 195 return; | |
| 196 } | |
| 197 if( obj instanceof PhraseQuery ) { | |
| 198 writeByte(TYPE_QUERY_PHRASE); | |
| 199 PhraseQuery query = (PhraseQuery)obj; | |
| 200 Term[] terms = query.getTerms(); | |
| 201 int[] positions = query.getPositions(); | |
| 202 if( terms.length != positions.length ) | |
| 203 throw new RuntimeException(); | |
| 204 writeInt( terms.length ); | |
| 205 for( int i=0; i<terms.length; i++ ) { | |
| 206 writeTerm( terms[i] ); | |
| 207 writeInt( positions[i] ); | |
| 208 } | |
| 209 return; | |
| 210 } | |
| 211 if( obj instanceof NumericRangeQuery ) { | |
| 212 writeByte(TYPE_QUERY_NUMERIC_RANGE); | |
| 213 NumericRangeQuery query = (NumericRangeQuery)obj; | |
| 214 writeUTF( query.getField() ); | |
| 215 writeObject( query.getMin() ); | |
| 216 writeObject( query.getMax() ); | |
| 217 writeBoolean( query.includesMin() ); | |
| 218 writeBoolean( query.includesMax() ); | |
| 219 return; | |
| 220 } | |
| 221 if( obj instanceof BooleanQuery ) { | |
| 222 writeByte(TYPE_QUERY_BOOLEAN); | |
| 223 BooleanQuery query = (BooleanQuery)obj; | |
| 224 BooleanClause[] a = query.getClauses(); | |
| 225 writeInt(a.length); | |
| 226 for( BooleanClause bc : a ) { | |
| 227 writeQuery( bc.getQuery() ); | |
| 228 writeUTF( bc.getOccur().name() ); | |
| 229 } | |
| 230 return; | |
| 231 } | |
| 232 throw new IllegalArgumentException("invalid type for "+obj); | |
| 233 } | |
| 234 | |
| 235 public void writeByteArray(byte[] bytes) throws IOException { | |
| 236 writeInt(bytes.length); | |
| 237 write(bytes); | |
| 238 } | |
| 239 | |
| 240 public void writeList(List list) throws IOException { | |
| 241 writeInt(list.size()); | |
| 242 for( Object obj : list ) { | |
| 243 writeObject(obj); | |
| 244 } | |
| 245 } | |
| 246 | |
| 247 public void writeMap(Map map) throws IOException { | |
| 248 writeInt(map.size()); | |
| 249 for( Object obj : map.entrySet() ) { | |
| 250 Map.Entry entry = (Map.Entry)obj; | |
| 251 writeObject( entry.getKey() ); | |
| 252 writeObject( entry.getValue() ); | |
| 253 } | |
| 254 } | |
| 255 | |
| 256 public void writeQuery(Query query) throws IOException { | |
| 257 writeObject(query); | |
| 258 } | |
| 259 | |
| 260 public void writeBytesRef(BytesRef br) throws IOException { | |
| 261 writeInt(br.length); | |
| 262 write(br.bytes,0,br.length); | |
| 263 } | |
| 264 | |
| 265 public void writeTerm(Term term) throws IOException { | |
| 266 writeUTF(term.field()); | |
| 267 writeBytesRef( term.bytes() ); | |
| 268 } | |
| 269 | |
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270 |
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271 public void writeByte(int v) throws IOException { |
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272 out.writeByte(v); |
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273 } |
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274 |
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275 public void writeInt(int v) throws IOException { |
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276 out.writeInt(v); |
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277 } |
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278 |
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279 public void writeLong(long v) throws IOException { |
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280 out.writeLong(v); |
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281 } |
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282 |
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283 public void writeFloat(float v) throws IOException { |
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284 out.writeFloat(v); |
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285 } |
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286 |
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287 public void writeDouble(double v) throws IOException { |
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288 out.writeDouble(v); |
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289 } |
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290 |
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291 public void writeBoolean(boolean v) throws IOException { |
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292 out.writeBoolean(v); |
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293 } |
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294 |
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295 public void writeUTF(String s) throws IOException { |
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296 out.writeUTF(s); |
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297 } |
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298 |
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299 public void write(byte[] b) throws IOException { |
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300 out.write(b); |
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301 } |
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302 |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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changeset
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303 public void write(byte[] b, int off, int len) throws IOException { |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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304 out.write(b,off,len); |
| 1461 | 305 } |
| 306 | |
| 307 } |