annotate src/goodjava/lucene/backup/Backup.java @ 1640:570f3d483a31

host - move https.luan into src
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 21 Dec 2021 16:54:26 -0700
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children 8dd8c556c449
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1 package goodjava.lucene.backup;
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2
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3 import java.io.File;
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4 import java.io.InputStream;
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5 import java.io.FileInputStream;
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6 import java.io.IOException;
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7 import java.util.List;
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8 import java.util.ArrayList;
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9 import java.util.Map;
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10 import java.util.Arrays;
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11 import goodjava.io.IoUtils;
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12 import goodjava.io.BufferedInputStream;
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13 import goodjava.rpc.RpcServer;
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14 import goodjava.rpc.RpcCall;
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15 import goodjava.rpc.RpcResult;
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16 import goodjava.rpc.RpcException;
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17 import goodjava.logging.Logger;
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18 import goodjava.logging.LoggerFactory;
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19 import goodjava.lucene.logging.LogFile;
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20 import goodjava.lucene.logging.LoggingIndexWriter;
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21 import goodjava.lucene.logging.LogOutputStream;
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22
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23
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24 class Backup {
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25 private static final Logger logger = LoggerFactory.getLogger(Backup.class);
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26
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27 private final File dir;
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28 private final File index;
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29
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30 Backup(File dir) {
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31 this.dir = dir;
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32 this.index = new File(dir,"index");
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33 }
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34
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35 void handle(RpcServer rpc,RpcCall call) {
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36 try {
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37 IoUtils.mkdirs(dir);
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38 if( call.cmd.equals("zip") ) {
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39 handleZip(rpc);
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40 } else {
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41 handle2(rpc,call);
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42 }
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43 } catch(IOException e) {
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44 throw new RuntimeException(e);
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45 }
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46 }
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47
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48 private static final RpcResult OK = new RpcResult(new Object[]{"ok"});
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49
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50 synchronized void handle2(RpcServer rpc,RpcCall call) throws IOException {
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51 //logger.info(call.cmd+" "+Arrays.asList(call.args));
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52 String fileName = null;
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53 if( call.cmd.equals("check") ) {
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54 // nothing
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55 } else if( call.cmd.equals("add") || call.cmd.equals("append") ) {
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56 fileName = (String)call.args[1];
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57 File f = new File(dir,fileName);
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58 if( call.cmd.equals("add") )
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59 IoUtils.delete(f);
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60 LogFile log = new LogFile(f);
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61 LogOutputStream out = log.output();
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62 IoUtils.copyAll(call.in,out);
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63 out.commit();
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64 out.close();
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65 //logger.info(call.cmd+" "+fileName+" "+call.lenIn);
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66 } else {
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67 logger.error("bad cmd '"+call.cmd+"'");
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68 rpc.write( new RpcException("bad cmd '"+call.cmd+"'") );
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69 return;
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70 }
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71 List logInfo = (List)call.args[0];
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72 //logger.info("check "+logInfo);
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73 RpcResult result = OK;
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74 for( Object obj : logInfo ) {
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75 Map fileInfo = (Map)obj;
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76 String name = (String)fileInfo.get("name");
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77 File f = new File(dir,name);
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78 if( !f.exists() ) {
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79 if( name.equals(fileName) ) logger.error("missing");
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80 result = new RpcResult(new Object[]{"missing",name});
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81 break;
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82 }
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83 long end = (Long)fileInfo.get("end");
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84 LogFile log = new LogFile(f);
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85 long logEnd = log.end();
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86 if( logEnd > end ) {
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87 logger.error("logEnd > end - shouldn't happen, file="+name+" logEnd="+logEnd+" end="+end);
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88 result = new RpcResult(new Object[]{"missing",name});
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89 break;
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90 }
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91 if( logEnd < end ) {
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92 if( name.equals(fileName) ) logger.error("incomplete");
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93 result = new RpcResult(new Object[]{"incomplete",name,logEnd});
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94 break;
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95 }
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96 Object checksumObj = fileInfo.get("checksum");
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97 if( checksumObj != null ) {
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98 long checksum = (Long)checksumObj;
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99 if( log.checksum() != checksum ) {
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100 index.delete();
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101 result = new RpcResult(new Object[]{"bad_checksum",name});
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102 break;
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103 }
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104 }
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105 }
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106 if( call.cmd.equals("add") ) {
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107 boolean complete = true;
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108 final LogFile[] logs = new LogFile[logInfo.size()];
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109 for( int i=0; i<logs.length; i++ ) {
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110 Map fileInfo = (Map)logInfo.get(i);
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111 String name = (String)fileInfo.get("name");
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112 File f = new File(dir,name);
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113 if( !f.exists() ) {
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114 complete = false;
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115 break;
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116 }
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117 logs[i] = new LogFile(f);
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118 }
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119 if( complete ) {
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120 LoggingIndexWriter.writeIndex(logs,index);
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121 //logger.info("write index");
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122 }
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123 }
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124 rpc.write(result);
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125 }
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126
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127 void handleZip(RpcServer rpc) throws IOException {
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128 File zip = File.createTempFile("luan_",".zip");
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129 IoUtils.delete(zip);
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130 String cmd = "zip -r " + zip + " " + dir.getName();
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131 synchronized(this) {
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132 Process proc = Runtime.getRuntime().exec(cmd,null,dir.getParentFile());
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133 IoUtils.waitFor(proc);
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134 }
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135 InputStream in = new BufferedInputStream(new FileInputStream(zip));
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136 RpcResult result = new RpcResult(in,zip.length(),new Object[0]);
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137 rpc.write(result);
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138 IoUtils.delete(zip);
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139 }
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140
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141 }