Mercurial Hosting > luan
annotate src/luan/host/Backup.java @ 1187:83c8a5a47f70
fixes for luanhost
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Thu, 22 Feb 2018 18:38:45 -0700 |
| parents | 94cf2576a922 |
| children | d41997776788 |
| rev | line source |
|---|---|
|
1185
94cf2576a922
implement WebHandler for nginx
Franklin Schmidt <fschmidt@gmail.com>
parents:
1182
diff
changeset
|
1 package luan.host; |
| 1135 | 2 |
| 3 import java.io.File; | |
| 4 import java.io.IOException; | |
| 5 import java.nio.file.Files; | |
| 6 import java.util.Map; | |
| 7 import org.slf4j.Logger; | |
| 8 import org.slf4j.LoggerFactory; | |
| 9 import org.apache.lucene.index.SnapshotDeletionPolicy; | |
| 10 import org.apache.lucene.index.IndexCommit; | |
| 11 import org.apache.lucene.store.FSDirectory; | |
| 12 import luan.LuanState; | |
| 13 import luan.LuanTable; | |
| 14 import luan.LuanException; | |
| 15 import luan.modules.PackageLuan; | |
| 16 import luan.modules.lucene.LuceneIndex; | |
| 1182 | 17 import luan.host.Log4j; |
| 1135 | 18 |
| 19 | |
| 20 public final class Backup { | |
| 21 private static final Logger logger = LoggerFactory.getLogger(Backup.class); | |
| 22 | |
| 23 private Backup() {} // never | |
| 24 | |
| 25 private static void mkdir(File dir) { | |
| 26 if( !dir.mkdirs() ) | |
| 27 throw new RuntimeException("couldn't make "+dir); | |
| 28 } | |
| 29 | |
| 30 private static void link(File from,File to) throws IOException { | |
| 31 Files.createLink( to.toPath(), from.toPath() ); | |
| 32 } | |
| 33 | |
| 34 private static void backupNonlocal(File from,File to) throws IOException { | |
| 35 mkdir(to); | |
| 36 for( File fromChild : from.listFiles() ) { | |
| 37 File toChild = new File( to, fromChild.getName() ); | |
| 38 if( fromChild.isDirectory() ) { | |
| 39 if( !fromChild.getName().equals("local") ) | |
| 40 backupNonlocal( fromChild, toChild ); | |
| 41 } else if( fromChild.isFile() ) { | |
| 42 link( fromChild, toChild ); | |
| 43 } else { | |
| 44 throw new RuntimeException(fromChild+" isn't dir or file"); | |
| 45 } | |
| 46 } | |
| 47 } | |
| 48 | |
| 49 private static final String getLucenes = | |
| 50 "local Lucene = require 'luan:lucene/Lucene.luan'\n" | |
| 51 +"local Table = require 'luan:Table.luan'\n" | |
| 52 +"return Table.copy(Lucene.instances)\n" | |
| 53 ; | |
| 54 | |
| 55 private static void backupLucene(File from,File to) throws IOException { | |
| 56 if( !new File(from,"site/init.luan").exists() ) { | |
| 57 return; | |
| 58 } | |
| 59 String fromPath = from.getCanonicalPath() + "/"; | |
| 60 LuanTable luceneInstances; | |
| 61 LuanState luan = null; | |
| 62 try { | |
| 63 if( WebHandler.isServing() ) { | |
| 64 luceneInstances = (LuanTable)WebHandler.runLuan( from.getName(), getLucenes, "getLucenes" ); | |
| 65 } else { | |
| 66 luan = new LuanState(); | |
| 67 WebHandler.initLuan( luan, from.toString(), from.getName() ); | |
| 68 PackageLuan.load(luan,"site:/init.luan"); | |
| 69 luceneInstances = (LuanTable)luan.eval(getLucenes); | |
| 70 } | |
| 71 } catch(LuanException e) { | |
| 1187 | 72 throw new RuntimeException(from.getName(),e); |
| 1135 | 73 } |
| 74 for( Map.Entry entry : luceneInstances.rawIterable() ) { | |
| 75 LuanTable tbl = (LuanTable)entry.getKey(); | |
| 76 LuceneIndex li = (LuceneIndex)tbl.rawGet("java"); | |
| 77 SnapshotDeletionPolicy snapshotDeletionPolicy = li.snapshotDeletionPolicy(); | |
| 78 IndexCommit ic = snapshotDeletionPolicy.snapshot(); | |
| 79 try { | |
| 80 FSDirectory fsdir = (FSDirectory)ic.getDirectory(); | |
| 81 File dir = fsdir.getDirectory(); | |
| 82 String dirPath = dir.toString(); | |
| 83 if( !dirPath.startsWith(fromPath) ) | |
| 84 throw new RuntimeException(fromPath+" "+dirPath); | |
| 85 File toDir = new File( to, dirPath.substring(fromPath.length()) ); | |
| 86 mkdir(toDir); | |
| 87 for( String name : ic.getFileNames() ) { | |
| 88 link( new File(dir,name), new File(toDir,name) ); | |
| 89 } | |
| 90 } finally { | |
| 91 snapshotDeletionPolicy.release(ic); | |
| 92 } | |
| 93 } | |
| 94 if( luan != null ) | |
| 95 luan.close(); | |
| 96 } | |
| 97 | |
| 98 public static void backup(File sitesDir,File backupDir) throws IOException { | |
| 99 mkdir(backupDir); | |
| 100 for( File siteDir : sitesDir.listFiles() ) { | |
| 101 File to = new File( backupDir, siteDir.getName() ); | |
| 102 backupNonlocal( siteDir, to ); | |
| 103 backupLucene( siteDir, to ); | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 public static void main(String[] args) throws Exception { | |
| 108 Log4j.initForConsole(); | |
| 1187 | 109 WebHandler.allowJavaFileName = args[2]; |
| 1135 | 110 backup( new File(args[0]), new File(args[1]) ); |
| 111 System.exit(0); | |
| 112 } | |
| 113 } |