Mercurial Hosting > luan
annotate src/goodjava/lucene/backup/Backup.java @ 1710:fc224a1bb6ea
add blog/serve_and_backup.luan
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Sun, 10 Jul 2022 17:52:19 -0600 |
| parents | aff2309ae510 |
| children |
| rev | line source |
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| 1499 | 1 package goodjava.lucene.backup; |
| 2 | |
| 3 import java.io.File; | |
| 1509 | 4 import java.io.InputStream; |
| 5 import java.io.FileInputStream; | |
| 1499 | 6 import java.io.IOException; |
| 7 import java.util.List; | |
| 8 import java.util.ArrayList; | |
| 9 import java.util.Map; | |
| 10 import java.util.Arrays; | |
| 11 import goodjava.io.IoUtils; | |
| 1509 | 12 import goodjava.io.BufferedInputStream; |
| 1499 | 13 import goodjava.rpc.RpcServer; |
| 14 import goodjava.rpc.RpcCall; | |
| 15 import goodjava.rpc.RpcResult; | |
| 1512 | 16 import goodjava.rpc.RpcException; |
| 1499 | 17 import goodjava.logging.Logger; |
| 18 import goodjava.logging.LoggerFactory; | |
| 19 import goodjava.lucene.logging.LogFile; | |
| 20 import goodjava.lucene.logging.LoggingIndexWriter; | |
| 21 import goodjava.lucene.logging.LogOutputStream; | |
| 22 | |
| 23 | |
| 1672 | 24 final class Backup { |
| 1499 | 25 private static final Logger logger = LoggerFactory.getLogger(Backup.class); |
| 26 | |
| 27 private final File dir; | |
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28 private final File indexFile; |
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29 private boolean updated = false; |
| 1499 | 30 |
| 31 Backup(File dir) { | |
| 32 this.dir = dir; | |
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33 this.indexFile = new File(dir,"index.json"); |
| 1499 | 34 } |
| 35 | |
| 1509 | 36 void handle(RpcServer rpc,RpcCall call) { |
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37 synchronized(this) { |
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38 if( !updated ) { |
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39 dir.setLastModified(System.currentTimeMillis()); |
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40 updated = true; |
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41 } |
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42 } |
| 1499 | 43 try { |
| 1509 | 44 IoUtils.mkdirs(dir); |
| 45 if( call.cmd.equals("zip") ) { | |
| 46 handleZip(rpc); | |
| 47 } else { | |
| 48 handle2(rpc,call); | |
| 49 } | |
| 1499 | 50 } catch(IOException e) { |
| 51 throw new RuntimeException(e); | |
| 52 } | |
| 53 } | |
| 54 | |
| 1509 | 55 private static final RpcResult OK = new RpcResult(new Object[]{"ok"}); |
| 56 | |
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57 private synchronized void handle2(RpcServer rpc,RpcCall call) throws IOException { |
| 1499 | 58 //logger.info(call.cmd+" "+Arrays.asList(call.args)); |
| 59 String fileName = null; | |
| 60 if( call.cmd.equals("check") ) { | |
| 61 // nothing | |
| 62 } else if( call.cmd.equals("add") || call.cmd.equals("append") ) { | |
| 1512 | 63 fileName = (String)call.args[1]; |
| 1499 | 64 File f = new File(dir,fileName); |
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65 if( call.cmd.equals("add") ) |
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66 IoUtils.delete(f); |
| 1499 | 67 LogFile log = new LogFile(f); |
| 68 LogOutputStream out = log.output(); | |
| 69 IoUtils.copyAll(call.in,out); | |
| 70 out.commit(); | |
| 71 out.close(); | |
| 1512 | 72 //logger.info(call.cmd+" "+fileName+" "+call.lenIn); |
| 73 } else { | |
| 74 logger.error("bad cmd '"+call.cmd+"'"); | |
| 75 rpc.write( new RpcException("bad cmd '"+call.cmd+"'") ); | |
| 76 return; | |
| 77 } | |
| 78 List logInfo = (List)call.args[0]; | |
| 79 //logger.info("check "+logInfo); | |
| 1509 | 80 RpcResult result = OK; |
| 1499 | 81 for( Object obj : logInfo ) { |
| 82 Map fileInfo = (Map)obj; | |
| 83 String name = (String)fileInfo.get("name"); | |
| 84 File f = new File(dir,name); | |
| 85 if( !f.exists() ) { | |
| 86 if( name.equals(fileName) ) logger.error("missing"); | |
| 1509 | 87 result = new RpcResult(new Object[]{"missing",name}); |
| 1499 | 88 break; |
| 89 } | |
| 90 long end = (Long)fileInfo.get("end"); | |
| 91 LogFile log = new LogFile(f); | |
| 92 long logEnd = log.end(); | |
| 93 if( logEnd > end ) { | |
| 94 logger.error("logEnd > end - shouldn't happen, file="+name+" logEnd="+logEnd+" end="+end); | |
| 1509 | 95 result = new RpcResult(new Object[]{"missing",name}); |
| 1499 | 96 break; |
| 97 } | |
| 98 if( logEnd < end ) { | |
| 99 if( name.equals(fileName) ) logger.error("incomplete"); | |
| 1509 | 100 result = new RpcResult(new Object[]{"incomplete",name,logEnd}); |
| 1499 | 101 break; |
| 102 } | |
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103 Object checksumObj = fileInfo.get("checksum"); |
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104 if( checksumObj != null ) { |
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105 long checksum = (Long)checksumObj; |
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106 if( log.checksum() != checksum ) { |
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107 indexFile.delete(); |
| 1509 | 108 result = new RpcResult(new Object[]{"bad_checksum",name}); |
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109 break; |
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110 } |
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111 } |
| 1499 | 112 } |
| 113 if( call.cmd.equals("add") ) { | |
| 114 boolean complete = true; | |
| 1548 | 115 final LogFile[] logs = new LogFile[logInfo.size()]; |
| 116 for( int i=0; i<logs.length; i++ ) { | |
| 117 Map fileInfo = (Map)logInfo.get(i); | |
| 1499 | 118 String name = (String)fileInfo.get("name"); |
| 119 File f = new File(dir,name); | |
| 120 if( !f.exists() ) { | |
| 121 complete = false; | |
| 122 break; | |
| 123 } | |
| 1548 | 124 logs[i] = new LogFile(f); |
| 1499 | 125 } |
| 126 if( complete ) { | |
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127 LoggingIndexWriter.writeIndex(logs,indexFile); |
| 1512 | 128 //logger.info("write index"); |
| 1499 | 129 } |
| 130 } | |
| 131 rpc.write(result); | |
| 132 } | |
| 133 | |
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parents:
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diff
changeset
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134 private void handleZip(RpcServer rpc) throws IOException { |
| 1509 | 135 File zip = File.createTempFile("luan_",".zip"); |
| 136 IoUtils.delete(zip); | |
| 1674 | 137 String cmd = "zip " + zip + " *"; |
| 1509 | 138 synchronized(this) { |
| 1674 | 139 Process proc = Runtime.getRuntime().exec(new String[]{"bash","-c",cmd},null,dir); |
| 1509 | 140 IoUtils.waitFor(proc); |
| 141 } | |
| 142 InputStream in = new BufferedInputStream(new FileInputStream(zip)); | |
| 143 RpcResult result = new RpcResult(in,zip.length(),new Object[0]); | |
| 144 rpc.write(result); | |
| 145 IoUtils.delete(zip); | |
| 146 } | |
| 1499 | 147 |
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148 synchronized void copyTo(File dirTo) throws IOException { |
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parents:
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149 IoUtils.mkdirs(dirTo); |
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parents:
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150 for( File f : dir.listFiles() ) { |
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151 String name = f.getName(); |
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parents:
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152 File to = new File(dirTo,name); |
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aff2309ae510
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parents:
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153 if( name.equals("index.json") ) { |
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parents:
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154 IoUtils.copy(f,to); |
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aff2309ae510
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parents:
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155 } else { |
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parents:
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156 IoUtils.link(f,to); |
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parents:
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157 } |
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158 } |
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159 } |
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160 |
| 1499 | 161 } |