Mercurial Hosting > luan
annotate src/goodjava/lucene/backup/BackupIndexWriter.java @ 1524:7902e74bfe5c
add goodjava.html
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Sat, 18 Jul 2020 01:00:21 -0600 |
| parents | 31b543826ca9 |
| children | 634f6765830e |
| 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 void doCheck(SortField sortField) throws IOException { |
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62 super.doCheck(sortField); |
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63 runSyncWithChecksum(); |
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64 } |
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65 |
| 1499 | 66 public void runSync() { |
| 1504 | 67 try { |
| 68 exec.submit(sync).get(); | |
| 69 } catch(Exception e) { | |
| 70 throw new RuntimeException(e); | |
| 71 } | |
| 1499 | 72 } |
| 73 | |
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74 public void runSyncWithChecksum() { |
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parents:
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75 try { |
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parents:
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76 exec.submit(syncWithChecksum).get(); |
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parents:
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77 } catch(Exception e) { |
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78 throw new RuntimeException(e); |
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79 } |
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80 } |
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parents:
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81 |
| 1499 | 82 private final Runnable sync = new Runnable() { |
| 1504 | 83 public void run() { |
| 1499 | 84 try { |
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85 sync(false); |
| 1499 | 86 } catch(IOException e) { |
| 87 throw new RuntimeException(e); | |
| 88 } | |
| 89 } | |
| 90 }; | |
| 91 | |
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parents:
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92 private final Runnable syncWithChecksum = new Runnable() { |
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93 public void run() { |
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94 try { |
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95 sync(true); |
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parents:
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96 } catch(IOException e) { |
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97 throw new RuntimeException(e); |
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98 } |
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99 } |
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100 }; |
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101 |
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parents:
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diff
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102 private void sync(boolean withChecksum) throws IOException { |
| 1499 | 103 List<LogFile> logs = new ArrayList<LogFile>(); |
| 104 synchronized(this) { | |
| 105 isSyncPending = false; | |
| 1500 | 106 clearDir(); |
| 1499 | 107 for( LogFile log : this.logs ) { |
| 108 File f = new File(dir,log.file.getName()); | |
| 109 IoUtils.link(log.file,f); | |
| 110 logs.add( new LogFile(f) ); | |
| 111 } | |
| 112 } | |
| 113 List logInfo = new ArrayList(); | |
| 114 Map<String,LogFile> logMap = new HashMap<String,LogFile>(); | |
| 115 for( LogFile log : logs ) { | |
| 116 Map fileInfo = new HashMap(); | |
| 117 fileInfo.put("name",log.file.getName()); | |
| 118 fileInfo.put("end",log.end()); | |
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parents:
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119 if( withChecksum ) |
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parents:
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diff
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120 fileInfo.put("checksum",log.checksum()); |
| 1499 | 121 logInfo.add(fileInfo); |
| 122 logMap.put(log.file.getName(),log); | |
| 123 } | |
| 124 for( String backupDomain : backupDomains ) { | |
| 1509 | 125 RpcClient rpc = BackupServer.rpcClient(backupDomain); |
| 1499 | 126 try { |
| 1512 | 127 RpcCall call = new RpcCall("login",name,password); |
| 128 rpc.write(call); | |
| 129 rpc.read(); | |
| 130 call = new RpcCall("check",logInfo); | |
| 1499 | 131 while(true) { |
| 132 rpc.write(call); | |
| 133 RpcResult result = rpc.read(); | |
| 1512 | 134 //logger.info(Arrays.asList(result.returnValues).toString()); |
| 1499 | 135 String status = (String)result.returnValues[0]; |
| 136 if( status.equals("ok") ) { | |
| 137 break; | |
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parents:
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diff
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138 } else if( status.equals("missing") || status.equals("bad_checksum") ) { |
| 1499 | 139 String fileName = (String)result.returnValues[1]; |
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parents:
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diff
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140 if( status.equals("bad_checksum") ) |
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parents:
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diff
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141 logger.error("bad_checksum "+fileName); |
| 1499 | 142 LogFile log = logMap.get(fileName); |
| 143 long len = log.end() - 8; | |
| 144 InputStream in = log.input(); | |
| 1512 | 145 call = new RpcCall(in,len,"add",logInfo,fileName); |
| 1499 | 146 } else if( status.equals("incomplete") ) { |
| 147 String fileName = (String)result.returnValues[1]; | |
| 148 long logEnd = (Long)result.returnValues[2]; | |
| 149 LogFile log = logMap.get(fileName); | |
| 150 long len = log.end() - logEnd; | |
| 151 InputStream in = log.input(); | |
| 152 in.skip(logEnd-8); | |
| 1512 | 153 call = new RpcCall(in,len,"append",logInfo,fileName); |
| 1499 | 154 } else |
| 155 throw new RuntimeException("status "+status); | |
| 156 } | |
| 157 } catch(RpcException e) { | |
| 158 logger.warn("",e); | |
| 159 } | |
| 160 rpc.close(); | |
| 161 } | |
| 1500 | 162 clearDir(); |
| 163 } | |
| 164 | |
| 165 private void clearDir() throws IOException { | |
| 166 for( File f : dir.listFiles() ) { | |
| 167 IoUtils.delete(f); | |
| 168 } | |
| 1499 | 169 } |
| 170 | |
| 1488 | 171 } |