Hey guys,
i'm trying to implement a basic backup/restore mechanism in my application.
the use case basicly is to load a previous snapshot of data. so i do a
backup and later i want to restore this to a second "working copy database"
to view the old data.
The db service in the following code is a simple spring bean starting an
embedded orientdb server and retuns the graph database instance.
try {
File backupFile = new File("testbackup.zip");
OutputStream oS = new FileOutputStream(backupFile);
dbService.getGraphDatabaseInstanceNoTx().getRawGraph().backup(oS, null,
null, null, 1, 1024);
oS.close(); // close the stream
dbService.destroy(); // shutdown embedded server
dbService.setGraphDatabase("restoreSnapshot" +
System.currentTimeMillis());
dbService.afterPropertiesSet(); // start embedded server
FileInputStream iS = new FileInputStream(backupFile);
dbService.getGraphDatabaseInstanceNoTx().getRawGraph().restore(iS,
null, null, null);
iS.close(); // close input stream
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Running this code i get the following exception:
java.io.IOException: The process cannot access the file because another
process has locked a portion of the file
at java.io.FileOutputStream.writeBytes(Native Method)
at java.io.FileOutputStream.write(FileOutputStream.java:345)
at java.io.BufferedOutputStream.write(BufferedOutputStream.java:122)
at com.orientechnologies.common.io.OIOUtils.copyStream(OIOUtils.java:153)
at
com.orientechnologies.orient.core.compression.impl.OZIPCompressionUtil.extractFile(OZIPCompressionUtil.java:90)
at
com.orientechnologies.orient.core.compression.impl.OZIPCompressionUtil.uncompressDirectory(OZIPCompressionUtil.java:76)
at
com.orientechnologies.orient.core.storage.impl.local.OStorageLocalAbstract.restore(OStorageLocalAbstract.java:119)
at
com.orientechnologies.orient.core.db.raw.ODatabaseRaw.restore(ODatabaseRaw.java:182)
at
com.orientechnologies.orient.core.db.ODatabaseWrapperAbstract.restore(ODatabaseWrapperAbstract.java:77)
at
com.orientechnologies.orient.core.db.ODatabaseWrapperAbstract.restore(ODatabaseWrapperAbstract.java:77)
at
com.encoway.conceptor.base.document.orient.OrientDbBasicTest.testDbSnapshot(OrientDbBasicTest.java:126)
I'm sure, none of the used files is accessed by another process. i'm doing
something wrong? or could this be a bug in orientdb? i'm using version 1.7.3
any ideas?
thanks
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