Mercurial Hosting > luan
annotate src/goodjava/lucene/backup/BackupIndexWriter.java @ 1816:e62c88b2883b
docs work
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Tue, 11 Jun 2024 21:39:18 -0600 |
| parents | 1578324d2aac |
| children |
| rev | line source |
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| 1488 | 1 package goodjava.lucene.backup; |
| 2 | |
| 3 import java.io.File; | |
| 1499 | 4 import java.io.InputStream; |
| 1674 | 5 import java.io.OutputStream; |
| 6 import java.io.BufferedOutputStream; | |
| 7 import java.io.FileOutputStream; | |
| 1488 | 8 import java.io.IOException; |
| 1499 | 9 import java.net.Socket; |
| 1672 | 10 import java.net.ConnectException; |
| 1488 | 11 import java.util.List; |
| 12 import java.util.ArrayList; | |
| 1499 | 13 import java.util.Map; |
| 14 import java.util.HashMap; | |
| 15 import java.util.Arrays; | |
| 1504 | 16 import java.util.concurrent.Executors; |
| 17 import java.util.concurrent.ExecutorService; | |
| 1672 | 18 import java.util.concurrent.ExecutionException; |
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19 import org.apache.lucene.search.SortField; |
| 1488 | 20 import goodjava.io.IoUtils; |
| 1499 | 21 import goodjava.rpc.RpcClient; |
| 22 import goodjava.rpc.RpcCall; | |
| 23 import goodjava.rpc.RpcResult; | |
| 24 import goodjava.rpc.RpcException; | |
| 1799 | 25 import goodjava.rpc.RpcError; |
| 1488 | 26 import goodjava.lucene.api.LuceneIndexWriter; |
| 27 import goodjava.lucene.logging.LoggingIndexWriter; | |
| 28 import goodjava.lucene.logging.LogFile; | |
| 1672 | 29 import goodjava.logging.Logger; |
| 30 import goodjava.logging.LoggerFactory; | |
| 1488 | 31 |
| 32 | |
| 1672 | 33 public final class BackupIndexWriter extends LoggingIndexWriter { |
| 1499 | 34 private static final Logger logger = LoggerFactory.getLogger(BackupIndexWriter.class); |
| 35 public static String[] backupDomains; | |
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36 private final String domain; |
| 1488 | 37 private final String name; |
| 38 private final File dir; | |
| 1499 | 39 private boolean isSyncPending = false; |
| 1504 | 40 private final ExecutorService exec = Executors.newSingleThreadExecutor(); |
| 1488 | 41 |
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42 public BackupIndexWriter(LuceneIndexWriter indexWriter,File logDir,long logTime,String domain,String name) |
| 1548 | 43 throws IOException |
| 44 { | |
| 45 super(indexWriter,logDir,logTime); | |
| 1499 | 46 if( backupDomains == null ) |
| 47 throw new RuntimeException("must set backupDomains"); | |
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48 this.domain = domain; |
| 1488 | 49 this.name = name; |
| 50 File f = new File(System.getProperty("java.io.tmpdir")); | |
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51 dir = new File(f,"goodjava.lucene/"+domain+"~"+name); |
| 1501 | 52 IoUtils.mkdirs(dir); |
| 1488 | 53 } |
| 54 | |
| 1672 | 55 @Override public synchronized void close() throws IOException { |
| 1504 | 56 super.close(); |
| 57 exec.shutdown(); | |
| 58 } | |
| 59 | |
| 1672 | 60 @Override public synchronized void commit() throws IOException { |
| 1488 | 61 super.commit(); |
| 1499 | 62 //sync(); |
| 63 if( !isSyncPending ) { | |
| 1799 | 64 exec.execute(syncR); |
| 1499 | 65 isSyncPending = true; |
| 1488 | 66 } |
| 67 } | |
| 68 | |
| 1672 | 69 @Override protected boolean doCheck(SortField sortField) throws IOException { |
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70 boolean ok = super.doCheck(sortField); |
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71 if( ok ) |
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72 runSyncWithChecksum(); |
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73 return ok; |
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74 } |
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75 |
| 1499 | 76 public void runSync() { |
| 1799 | 77 execR(syncR); |
| 1499 | 78 } |
| 79 | |
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80 public void runSyncWithChecksum() { |
| 1799 | 81 execR(syncWithChecksum); |
| 1672 | 82 } |
| 83 | |
| 1799 | 84 private void execR(Runnable r) { |
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85 try { |
| 1672 | 86 exec.submit(r).get(); |
| 87 } catch(InterruptedException e) { | |
| 88 throw new RuntimeException(e); | |
| 89 } catch(ExecutionException e) { | |
| 90 Throwable cause = e.getCause(); | |
| 91 if( cause instanceof RuntimeException ) | |
| 92 throw (RuntimeException)cause; | |
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93 throw new RuntimeException(e); |
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94 } |
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95 } |
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96 |
| 1799 | 97 private final Runnable syncR = new Runnable() { |
| 1504 | 98 public void run() { |
| 1499 | 99 try { |
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100 sync(false); |
| 1672 | 101 } catch(ConnectException e) { |
| 102 logger.error("sync failed: "+e.getMessage()); | |
| 1499 | 103 } catch(IOException e) { |
| 104 throw new RuntimeException(e); | |
| 1799 | 105 } catch(RpcError e) { |
| 106 logger.error("",e); | |
| 107 throw e; | |
| 1499 | 108 } |
| 109 } | |
| 110 }; | |
| 111 | |
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112 private final Runnable syncWithChecksum = new Runnable() { |
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113 public void run() { |
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114 try { |
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115 sync(true); |
| 1672 | 116 } catch(ConnectException e) { |
| 117 logger.error("syncWithChecksum failed: "+e.getMessage()); | |
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118 } catch(IOException e) { |
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119 throw new RuntimeException(e); |
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120 } |
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121 } |
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122 }; |
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123 |
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124 private void sync(boolean withChecksum) throws IOException { |
| 1499 | 125 List<LogFile> logs = new ArrayList<LogFile>(); |
| 126 synchronized(this) { | |
| 127 isSyncPending = false; | |
| 1500 | 128 clearDir(); |
| 1499 | 129 for( LogFile log : this.logs ) { |
| 130 File f = new File(dir,log.file.getName()); | |
| 131 IoUtils.link(log.file,f); | |
| 132 logs.add( new LogFile(f) ); | |
| 133 } | |
| 134 } | |
| 135 List logInfo = new ArrayList(); | |
| 136 Map<String,LogFile> logMap = new HashMap<String,LogFile>(); | |
| 137 for( LogFile log : logs ) { | |
| 138 Map fileInfo = new HashMap(); | |
| 139 fileInfo.put("name",log.file.getName()); | |
| 140 fileInfo.put("end",log.end()); | |
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141 if( withChecksum ) |
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142 fileInfo.put("checksum",log.checksum()); |
| 1499 | 143 logInfo.add(fileInfo); |
| 144 logMap.put(log.file.getName(),log); | |
| 145 } | |
| 146 for( String backupDomain : backupDomains ) { | |
| 1509 | 147 RpcClient rpc = BackupServer.rpcClient(backupDomain); |
| 1499 | 148 try { |
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149 RpcCall call = new RpcCall("login",domain,name); |
| 1512 | 150 rpc.write(call); |
| 151 rpc.read(); | |
| 152 call = new RpcCall("check",logInfo); | |
| 1499 | 153 while(true) { |
| 154 rpc.write(call); | |
| 155 RpcResult result = rpc.read(); | |
| 1512 | 156 //logger.info(Arrays.asList(result.returnValues).toString()); |
| 1499 | 157 String status = (String)result.returnValues[0]; |
| 158 if( status.equals("ok") ) { | |
| 159 break; | |
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160 } else if( status.equals("missing") || status.equals("bad_checksum") ) { |
| 1499 | 161 String fileName = (String)result.returnValues[1]; |
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162 if( status.equals("bad_checksum") ) |
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163 logger.error("bad_checksum "+fileName); |
| 1499 | 164 LogFile log = logMap.get(fileName); |
| 165 long len = log.end() - 8; | |
| 166 InputStream in = log.input(); | |
| 1512 | 167 call = new RpcCall(in,len,"add",logInfo,fileName); |
| 1675 | 168 logger.info("add "+fileName); |
| 1499 | 169 } else if( status.equals("incomplete") ) { |
| 170 String fileName = (String)result.returnValues[1]; | |
| 171 long logEnd = (Long)result.returnValues[2]; | |
| 172 LogFile log = logMap.get(fileName); | |
| 173 long len = log.end() - logEnd; | |
| 174 InputStream in = log.input(); | |
| 175 in.skip(logEnd-8); | |
| 1512 | 176 call = new RpcCall(in,len,"append",logInfo,fileName); |
| 1675 | 177 // logger.info("append "+fileName); |
| 1499 | 178 } else |
| 179 throw new RuntimeException("status "+status); | |
| 180 } | |
| 181 } catch(RpcException e) { | |
| 1672 | 182 logger.error("",e); |
| 1499 | 183 } |
| 184 rpc.close(); | |
| 185 } | |
| 1500 | 186 clearDir(); |
| 187 } | |
| 188 | |
| 189 private void clearDir() throws IOException { | |
| 190 for( File f : dir.listFiles() ) { | |
| 191 IoUtils.delete(f); | |
| 192 } | |
| 1499 | 193 } |
| 194 | |
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195 public static BackupIndexWriter newWithRestore(LuceneIndexWriter indexWriter,File logDir,long logTime,String domain,String name) |
| 1674 | 196 throws IOException |
| 197 { | |
| 198 if( !logDir.exists() ) { | |
| 199 RpcClient rpc = BackupServer.rpcClient(backupDomains[0]); | |
| 200 try { | |
| 201 RpcCall call; | |
| 202 RpcResult result; | |
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203 call = new RpcCall("exists",domain,name); |
| 1674 | 204 rpc.write(call); |
| 205 result = rpc.read(); | |
| 206 boolean exists = (Boolean)result.returnValues[0]; | |
| 207 if( exists ) { | |
| 208 logger.error("restoring "+logDir+" from backup"); | |
| 209 File zip = File.createTempFile("luan_",".zip"); | |
| 210 IoUtils.delete(zip); | |
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211 call = new RpcCall("login",domain,name); |
| 1674 | 212 rpc.write(call); |
| 213 rpc.read(); | |
| 214 call = new RpcCall("zip"); | |
| 215 rpc.write(call); | |
| 216 result = rpc.read(); | |
| 217 OutputStream out = new BufferedOutputStream(new FileOutputStream(zip)); | |
| 218 IoUtils.copyAll(result.in,out); | |
| 219 out.close(); | |
| 220 IoUtils.mkdirs(logDir); | |
| 221 String cmd = "unzip " + zip; | |
| 222 Process proc = Runtime.getRuntime().exec(cmd,null,logDir); | |
| 223 IoUtils.waitFor(proc); | |
| 224 IoUtils.delete(zip); | |
| 225 } | |
| 226 } catch(RpcException e) { | |
| 227 throw new RuntimeException(e); | |
| 228 } | |
| 229 rpc.close(); | |
| 230 } | |
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231 return new BackupIndexWriter(indexWriter,logDir,logTime,domain,name); |
| 1674 | 232 } |
| 233 | |
| 1488 | 234 } |