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annotate src/goodjava/lucene/backup/BackupIndexWriter.java @ 1591:85cd316f0cdb
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| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Thu, 18 Mar 2021 23:36:15 -0600 |
| parents | 736ec76bbf42 |
| children | 8dd8c556c449 |
| 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 |
| 1548 | 36 public BackupIndexWriter(LuceneIndexWriter indexWriter,File logDir,long logTime,String name,String password) |
| 37 throws IOException | |
| 38 { | |
| 39 super(indexWriter,logDir,logTime); | |
| 1499 | 40 if( backupDomains == null ) |
| 41 throw new RuntimeException("must set backupDomains"); | |
| 1488 | 42 this.name = name; |
| 1512 | 43 this.password = password; |
| 1488 | 44 File f = new File(System.getProperty("java.io.tmpdir")); |
| 45 dir = new File(f,"goodjava.lucene/"+name); | |
| 1501 | 46 IoUtils.mkdirs(dir); |
| 1488 | 47 } |
| 48 | |
| 1504 | 49 public synchronized void close() throws IOException { |
| 50 super.close(); | |
| 51 exec.shutdown(); | |
| 52 } | |
| 53 | |
| 1488 | 54 public synchronized void commit() throws IOException { |
| 55 super.commit(); | |
| 1499 | 56 //sync(); |
| 57 if( !isSyncPending ) { | |
| 1504 | 58 exec.execute(sync); |
| 1499 | 59 isSyncPending = true; |
| 1488 | 60 } |
| 61 } | |
| 62 | |
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63 protected boolean doCheck(SortField sortField) throws IOException { |
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64 boolean ok = super.doCheck(sortField); |
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65 if( ok ) |
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66 runSyncWithChecksum(); |
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67 return ok; |
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68 } |
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69 |
| 1499 | 70 public void runSync() { |
| 1504 | 71 try { |
| 72 exec.submit(sync).get(); | |
| 73 } catch(Exception e) { | |
| 74 throw new RuntimeException(e); | |
| 75 } | |
| 1499 | 76 } |
| 77 | |
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78 public void runSyncWithChecksum() { |
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79 try { |
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80 exec.submit(syncWithChecksum).get(); |
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81 } catch(Exception e) { |
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82 throw new RuntimeException(e); |
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83 } |
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84 } |
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85 |
| 1499 | 86 private final Runnable sync = new Runnable() { |
| 1504 | 87 public void run() { |
| 1499 | 88 try { |
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89 sync(false); |
| 1499 | 90 } catch(IOException e) { |
| 91 throw new RuntimeException(e); | |
| 92 } | |
| 93 } | |
| 94 }; | |
| 95 | |
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96 private final Runnable syncWithChecksum = new Runnable() { |
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97 public void run() { |
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98 try { |
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99 sync(true); |
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100 } catch(IOException e) { |
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101 throw new RuntimeException(e); |
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102 } |
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103 } |
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104 }; |
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105 |
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106 private void sync(boolean withChecksum) throws IOException { |
| 1499 | 107 List<LogFile> logs = new ArrayList<LogFile>(); |
| 108 synchronized(this) { | |
| 109 isSyncPending = false; | |
| 1500 | 110 clearDir(); |
| 1499 | 111 for( LogFile log : this.logs ) { |
| 112 File f = new File(dir,log.file.getName()); | |
| 113 IoUtils.link(log.file,f); | |
| 114 logs.add( new LogFile(f) ); | |
| 115 } | |
| 116 } | |
| 117 List logInfo = new ArrayList(); | |
| 118 Map<String,LogFile> logMap = new HashMap<String,LogFile>(); | |
| 119 for( LogFile log : logs ) { | |
| 120 Map fileInfo = new HashMap(); | |
| 121 fileInfo.put("name",log.file.getName()); | |
| 122 fileInfo.put("end",log.end()); | |
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123 if( withChecksum ) |
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124 fileInfo.put("checksum",log.checksum()); |
| 1499 | 125 logInfo.add(fileInfo); |
| 126 logMap.put(log.file.getName(),log); | |
| 127 } | |
| 128 for( String backupDomain : backupDomains ) { | |
| 1509 | 129 RpcClient rpc = BackupServer.rpcClient(backupDomain); |
| 1499 | 130 try { |
| 1512 | 131 RpcCall call = new RpcCall("login",name,password); |
| 132 rpc.write(call); | |
| 133 rpc.read(); | |
| 134 call = new RpcCall("check",logInfo); | |
| 1499 | 135 while(true) { |
| 136 rpc.write(call); | |
| 137 RpcResult result = rpc.read(); | |
| 1512 | 138 //logger.info(Arrays.asList(result.returnValues).toString()); |
| 1499 | 139 String status = (String)result.returnValues[0]; |
| 140 if( status.equals("ok") ) { | |
| 141 break; | |
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142 } else if( status.equals("missing") || status.equals("bad_checksum") ) { |
| 1499 | 143 String fileName = (String)result.returnValues[1]; |
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144 if( status.equals("bad_checksum") ) |
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145 logger.error("bad_checksum "+fileName); |
| 1499 | 146 LogFile log = logMap.get(fileName); |
| 147 long len = log.end() - 8; | |
| 148 InputStream in = log.input(); | |
| 1512 | 149 call = new RpcCall(in,len,"add",logInfo,fileName); |
| 1499 | 150 } else if( status.equals("incomplete") ) { |
| 151 String fileName = (String)result.returnValues[1]; | |
| 152 long logEnd = (Long)result.returnValues[2]; | |
| 153 LogFile log = logMap.get(fileName); | |
| 154 long len = log.end() - logEnd; | |
| 155 InputStream in = log.input(); | |
| 156 in.skip(logEnd-8); | |
| 1512 | 157 call = new RpcCall(in,len,"append",logInfo,fileName); |
| 1499 | 158 } else |
| 159 throw new RuntimeException("status "+status); | |
| 160 } | |
| 161 } catch(RpcException e) { | |
| 162 logger.warn("",e); | |
| 163 } | |
| 164 rpc.close(); | |
| 165 } | |
| 1500 | 166 clearDir(); |
| 167 } | |
| 168 | |
| 169 private void clearDir() throws IOException { | |
| 170 for( File f : dir.listFiles() ) { | |
| 171 IoUtils.delete(f); | |
| 172 } | |
| 1499 | 173 } |
| 174 | |
| 1488 | 175 } |