Mercurial Hosting > luan
annotate src/goodjava/lucene/backup/BackupIndexWriter.java @ 1544:35601f15ecc3
add lucene log tag and restore_from_log
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Sun, 20 Sep 2020 20:36:55 -0600 |
| parents | 634f6765830e |
| children | 736ec76bbf42 |
| rev | line source |
|---|---|
| 1488 | 1 package goodjava.lucene.backup; |
| 2 | |
| 3 import java.io.File; | |
| 1499 | 4 import java.io.InputStream; |
| 1488 | 5 import java.io.IOException; |
| 1499 | 6 import java.net.Socket; |
| 1488 | 7 import java.util.List; |
| 8 import java.util.ArrayList; | |
| 1499 | 9 import java.util.Map; |
| 10 import java.util.HashMap; | |
| 11 import java.util.Arrays; | |
| 1504 | 12 import java.util.concurrent.Executors; |
| 13 import java.util.concurrent.ExecutorService; | |
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14 import org.apache.lucene.search.SortField; |
| 1488 | 15 import goodjava.io.IoUtils; |
| 1499 | 16 import goodjava.rpc.RpcClient; |
| 17 import goodjava.rpc.RpcCall; | |
| 18 import goodjava.rpc.RpcResult; | |
| 19 import goodjava.rpc.RpcException; | |
| 1488 | 20 import goodjava.lucene.api.LuceneIndexWriter; |
| 1499 | 21 import goodjava.logging.Logger; |
| 22 import goodjava.logging.LoggerFactory; | |
| 1488 | 23 import goodjava.lucene.logging.LoggingIndexWriter; |
| 24 import goodjava.lucene.logging.LogFile; | |
| 25 | |
| 26 | |
| 27 public class BackupIndexWriter extends LoggingIndexWriter { | |
| 1499 | 28 private static final Logger logger = LoggerFactory.getLogger(BackupIndexWriter.class); |
| 29 public static String[] backupDomains; | |
| 1488 | 30 private final String name; |
| 1512 | 31 private final String password; |
| 1488 | 32 private final File dir; |
| 1499 | 33 private boolean isSyncPending = false; |
| 1504 | 34 private final ExecutorService exec = Executors.newSingleThreadExecutor(); |
| 1488 | 35 |
| 1512 | 36 public BackupIndexWriter(LuceneIndexWriter indexWriter,File logDir,String name,String password) throws IOException { |
| 1488 | 37 super(indexWriter,logDir); |
| 1499 | 38 if( backupDomains == null ) |
| 39 throw new RuntimeException("must set backupDomains"); | |
| 1488 | 40 this.name = name; |
| 1512 | 41 this.password = password; |
| 1488 | 42 File f = new File(System.getProperty("java.io.tmpdir")); |
| 43 dir = new File(f,"goodjava.lucene/"+name); | |
| 1501 | 44 IoUtils.mkdirs(dir); |
| 1488 | 45 } |
| 46 | |
| 1504 | 47 public synchronized void close() throws IOException { |
| 48 super.close(); | |
| 49 exec.shutdown(); | |
| 50 } | |
| 51 | |
| 1488 | 52 public synchronized void commit() throws IOException { |
| 53 super.commit(); | |
| 1499 | 54 //sync(); |
| 55 if( !isSyncPending ) { | |
| 1504 | 56 exec.execute(sync); |
| 1499 | 57 isSyncPending = true; |
| 1488 | 58 } |
| 59 } | |
| 60 | |
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61 protected boolean doCheck(SortField sortField) throws IOException { |
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62 boolean ok = super.doCheck(sortField); |
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63 if( ok ) |
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64 runSyncWithChecksum(); |
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65 return ok; |
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66 } |
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67 |
| 1499 | 68 public void runSync() { |
| 1504 | 69 try { |
| 70 exec.submit(sync).get(); | |
| 71 } catch(Exception e) { | |
| 72 throw new RuntimeException(e); | |
| 73 } | |
| 1499 | 74 } |
| 75 | |
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parents:
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76 public void runSyncWithChecksum() { |
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parents:
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77 try { |
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78 exec.submit(syncWithChecksum).get(); |
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parents:
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79 } catch(Exception e) { |
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80 throw new RuntimeException(e); |
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81 } |
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parents:
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82 } |
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parents:
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83 |
| 1499 | 84 private final Runnable sync = new Runnable() { |
| 1504 | 85 public void run() { |
| 1499 | 86 try { |
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parents:
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87 sync(false); |
| 1499 | 88 } catch(IOException e) { |
| 89 throw new RuntimeException(e); | |
| 90 } | |
| 91 } | |
| 92 }; | |
| 93 | |
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parents:
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diff
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94 private final Runnable syncWithChecksum = new Runnable() { |
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parents:
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95 public void run() { |
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96 try { |
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97 sync(true); |
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parents:
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98 } catch(IOException e) { |
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parents:
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99 throw new RuntimeException(e); |
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parents:
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100 } |
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parents:
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101 } |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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102 }; |
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86c5e7000ecf
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parents:
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103 |
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86c5e7000ecf
lucene.backup checksum
Franklin Schmidt <fschmidt@gmail.com>
parents:
1506
diff
changeset
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104 private void sync(boolean withChecksum) throws IOException { |
| 1499 | 105 List<LogFile> logs = new ArrayList<LogFile>(); |
| 106 synchronized(this) { | |
| 107 isSyncPending = false; | |
| 1500 | 108 clearDir(); |
| 1499 | 109 for( LogFile log : this.logs ) { |
| 110 File f = new File(dir,log.file.getName()); | |
| 111 IoUtils.link(log.file,f); | |
| 112 logs.add( new LogFile(f) ); | |
| 113 } | |
| 114 } | |
| 115 List logInfo = new ArrayList(); | |
| 116 Map<String,LogFile> logMap = new HashMap<String,LogFile>(); | |
| 117 for( LogFile log : logs ) { | |
| 118 Map fileInfo = new HashMap(); | |
| 119 fileInfo.put("name",log.file.getName()); | |
| 120 fileInfo.put("end",log.end()); | |
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parents:
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diff
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121 if( withChecksum ) |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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122 fileInfo.put("checksum",log.checksum()); |
| 1499 | 123 logInfo.add(fileInfo); |
| 124 logMap.put(log.file.getName(),log); | |
| 125 } | |
| 126 for( String backupDomain : backupDomains ) { | |
| 1509 | 127 RpcClient rpc = BackupServer.rpcClient(backupDomain); |
| 1499 | 128 try { |
| 1512 | 129 RpcCall call = new RpcCall("login",name,password); |
| 130 rpc.write(call); | |
| 131 rpc.read(); | |
| 132 call = new RpcCall("check",logInfo); | |
| 1499 | 133 while(true) { |
| 134 rpc.write(call); | |
| 135 RpcResult result = rpc.read(); | |
| 1512 | 136 //logger.info(Arrays.asList(result.returnValues).toString()); |
| 1499 | 137 String status = (String)result.returnValues[0]; |
| 138 if( status.equals("ok") ) { | |
| 139 break; | |
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parents:
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diff
changeset
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140 } else if( status.equals("missing") || status.equals("bad_checksum") ) { |
| 1499 | 141 String fileName = (String)result.returnValues[1]; |
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parents:
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diff
changeset
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142 if( status.equals("bad_checksum") ) |
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86c5e7000ecf
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parents:
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diff
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143 logger.error("bad_checksum "+fileName); |
| 1499 | 144 LogFile log = logMap.get(fileName); |
| 145 long len = log.end() - 8; | |
| 146 InputStream in = log.input(); | |
| 1512 | 147 call = new RpcCall(in,len,"add",logInfo,fileName); |
| 1499 | 148 } else if( status.equals("incomplete") ) { |
| 149 String fileName = (String)result.returnValues[1]; | |
| 150 long logEnd = (Long)result.returnValues[2]; | |
| 151 LogFile log = logMap.get(fileName); | |
| 152 long len = log.end() - logEnd; | |
| 153 InputStream in = log.input(); | |
| 154 in.skip(logEnd-8); | |
| 1512 | 155 call = new RpcCall(in,len,"append",logInfo,fileName); |
| 1499 | 156 } else |
| 157 throw new RuntimeException("status "+status); | |
| 158 } | |
| 159 } catch(RpcException e) { | |
| 160 logger.warn("",e); | |
| 161 } | |
| 162 rpc.close(); | |
| 163 } | |
| 1500 | 164 clearDir(); |
| 165 } | |
| 166 | |
| 167 private void clearDir() throws IOException { | |
| 168 for( File f : dir.listFiles() ) { | |
| 169 IoUtils.delete(f); | |
| 170 } | |
| 1499 | 171 } |
| 172 | |
| 1488 | 173 } |