annotate src/goodjava/lucene/backup/BackupIndexWriter.java @ 1548:736ec76bbf42

lucene log work
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 27 Sep 2020 22:07:18 -0600
parents 634f6765830e
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.IOException;
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6 import java.net.Socket;
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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.HashMap;
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11 import java.util.Arrays;
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12 import java.util.concurrent.Executors;
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13 import java.util.concurrent.ExecutorService;
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14 import org.apache.lucene.search.SortField;
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15 import goodjava.io.IoUtils;
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16 import goodjava.rpc.RpcClient;
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17 import goodjava.rpc.RpcCall;
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18 import goodjava.rpc.RpcResult;
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19 import goodjava.rpc.RpcException;
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20 import goodjava.lucene.api.LuceneIndexWriter;
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21 import goodjava.logging.Logger;
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22 import goodjava.logging.LoggerFactory;
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23 import goodjava.lucene.logging.LoggingIndexWriter;
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24 import goodjava.lucene.logging.LogFile;
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26
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27 public class BackupIndexWriter extends LoggingIndexWriter {
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28 private static final Logger logger = LoggerFactory.getLogger(BackupIndexWriter.class);
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29 public static String[] backupDomains;
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30 private final String name;
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31 private final String password;
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32 private final File dir;
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33 private boolean isSyncPending = false;
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34 private final ExecutorService exec = Executors.newSingleThreadExecutor();
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35
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36 public BackupIndexWriter(LuceneIndexWriter indexWriter,File logDir,long logTime,String name,String password)
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37 throws IOException
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38 {
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39 super(indexWriter,logDir,logTime);
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40 if( backupDomains == null )
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41 throw new RuntimeException("must set backupDomains");
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42 this.name = name;
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43 this.password = password;
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44 File f = new File(System.getProperty("java.io.tmpdir"));
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45 dir = new File(f,"goodjava.lucene/"+name);
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46 IoUtils.mkdirs(dir);
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47 }
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48
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49 public synchronized void close() throws IOException {
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50 super.close();
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51 exec.shutdown();
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52 }
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53
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54 public synchronized void commit() throws IOException {
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55 super.commit();
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56 //sync();
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57 if( !isSyncPending ) {
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58 exec.execute(sync);
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59 isSyncPending = true;
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60 }
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61 }
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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
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70 public void runSync() {
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71 try {
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72 exec.submit(sync).get();
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73 } catch(Exception e) {
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74 throw new RuntimeException(e);
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75 }
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76 }
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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
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86 private final Runnable sync = new Runnable() {
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87 public void run() {
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88 try {
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89 sync(false);
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90 } catch(IOException e) {
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91 throw new RuntimeException(e);
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92 }
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93 }
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94 };
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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 {
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107 List<LogFile> logs = new ArrayList<LogFile>();
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108 synchronized(this) {
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109 isSyncPending = false;
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110 clearDir();
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111 for( LogFile log : this.logs ) {
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112 File f = new File(dir,log.file.getName());
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113 IoUtils.link(log.file,f);
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114 logs.add( new LogFile(f) );
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115 }
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116 }
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117 List logInfo = new ArrayList();
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118 Map<String,LogFile> logMap = new HashMap<String,LogFile>();
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119 for( LogFile log : logs ) {
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120 Map fileInfo = new HashMap();
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121 fileInfo.put("name",log.file.getName());
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122 fileInfo.put("end",log.end());
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123 if( withChecksum )
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124 fileInfo.put("checksum",log.checksum());
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125 logInfo.add(fileInfo);
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126 logMap.put(log.file.getName(),log);
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127 }
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128 for( String backupDomain : backupDomains ) {
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129 RpcClient rpc = BackupServer.rpcClient(backupDomain);
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130 try {
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131 RpcCall call = new RpcCall("login",name,password);
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132 rpc.write(call);
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133 rpc.read();
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134 call = new RpcCall("check",logInfo);
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135 while(true) {
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136 rpc.write(call);
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137 RpcResult result = rpc.read();
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138 //logger.info(Arrays.asList(result.returnValues).toString());
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139 String status = (String)result.returnValues[0];
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140 if( status.equals("ok") ) {
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141 break;
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142 } else if( status.equals("missing") || status.equals("bad_checksum") ) {
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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);
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146 LogFile log = logMap.get(fileName);
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147 long len = log.end() - 8;
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148 InputStream in = log.input();
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149 call = new RpcCall(in,len,"add",logInfo,fileName);
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150 } else if( status.equals("incomplete") ) {
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151 String fileName = (String)result.returnValues[1];
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152 long logEnd = (Long)result.returnValues[2];
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153 LogFile log = logMap.get(fileName);
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154 long len = log.end() - logEnd;
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155 InputStream in = log.input();
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156 in.skip(logEnd-8);
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157 call = new RpcCall(in,len,"append",logInfo,fileName);
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158 } else
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159 throw new RuntimeException("status "+status);
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160 }
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161 } catch(RpcException e) {
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162 logger.warn("",e);
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163 }
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164 rpc.close();
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165 }
1500
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166 clearDir();
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167 }
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168
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169 private void clearDir() throws IOException {
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170 for( File f : dir.listFiles() ) {
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171 IoUtils.delete(f);
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172 }
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173 }
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174
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175 }