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annotate src/goodjava/lucene/logging/LogFile.java @ 1593:ea62c2316b2e
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author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Sat, 20 Mar 2021 22:29:01 -0600 |
parents | 117ce8645b7f |
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rev | line source |
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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; | |
1461 | 7 import java.io.RandomAccessFile; |
1480 | 8 import java.io.FileInputStream; |
1481 | 9 import java.io.FileOutputStream; |
1461 | 10 import java.io.IOException; |
1465 | 11 import goodjava.logging.Logger; |
12 import goodjava.logging.LoggerFactory; | |
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13 import goodjava.io.FixedLengthInputStream; |
1480 | 14 import goodjava.io.BufferedInputStream; |
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15 import goodjava.io.IoUtils; |
1461 | 16 |
17 | |
1486 | 18 public class LogFile { |
1465 | 19 private static final Logger logger = LoggerFactory.getLogger(LogFile.class); |
20 public final File file; | |
1486 | 21 long end; |
1461 | 22 |
1486 | 23 public LogFile(File file) throws IOException { |
24 this.file = file; | |
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25 RandomAccessFile raf = new RandomAccessFile(file,"rwd"); |
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26 if( raf.length() == 0 ) { |
1461 | 27 end = 8; |
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28 raf.writeLong(end); |
1461 | 29 } else { |
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30 raf.seek(0L); |
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31 end = raf.readLong(); |
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32 raf.seek(end); |
1461 | 33 } |
1486 | 34 raf.close(); |
1461 | 35 } |
36 | |
1465 | 37 public String toString() { |
38 return "LogFile<" + file.getName() + ">"; | |
39 } | |
40 | |
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41 public long end() { |
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42 return end; |
1461 | 43 } |
44 | |
1486 | 45 public LogOutputStream output() throws IOException { |
46 RandomAccessFile raf = new RandomAccessFile(file,"rwd"); | |
47 OutputStream out = new FileOutputStream(raf.getFD()); | |
48 out = new BufferedOutputStream(out); | |
49 return newLogOutputStream(raf,out); | |
50 } | |
51 | |
52 protected LogOutputStream newLogOutputStream(RandomAccessFile raf,OutputStream out) throws IOException { | |
53 return new LogOutputStream(this,raf,out); | |
54 } | |
55 | |
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56 public LogInputStream input() throws IOException { |
1480 | 57 InputStream in = new FileInputStream(file); |
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58 in = new FixedLengthInputStream(in,end); |
1480 | 59 in = new BufferedInputStream(in); |
60 LogInputStream lis = newLogInputStream(in); | |
61 lis.readLong(); // skip end | |
62 return lis; | |
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63 } |
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64 |
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65 protected LogInputStream newLogInputStream(InputStream in) { |
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66 return new LogInputStream(in); |
1461 | 67 } |
68 | |
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69 public long checksum() throws IOException { |
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70 return IoUtils.checksum(input()); |
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71 } |
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72 |
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73 static final int TYPE_NULL = 0; |
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74 static final int TYPE_STRING = 1; |
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75 static final int TYPE_INT = 2; |
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76 static final int TYPE_LONG = 3; |
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77 static final int TYPE_FLOAT = 4; |
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78 static final int TYPE_DOUBLE = 5; |
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79 static final int TYPE_BYTES = 6; |
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80 static final int TYPE_LIST = 7; |
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81 static final int TYPE_QUERY_MATCH_ALL_DOCS = 8; |
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82 static final int TYPE_QUERY_TERM = 9; |
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83 static final int TYPE_QUERY_PREFIX = 10; |
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84 static final int TYPE_QUERY_WILDCARD = 11; |
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85 static final int TYPE_QUERY_TERM_RANGE = 12; |
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86 static final int TYPE_QUERY_PHRASE = 13; |
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87 static final int TYPE_QUERY_NUMERIC_RANGE = 14; |
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88 static final int TYPE_QUERY_BOOLEAN = 15; |
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89 static final int TYPE_LONG_STRING = 16; |
1461 | 90 } |