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package org.openslx.imagemaster.db.mappers;
import java.nio.ByteBuffer;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ArrayBlockingQueue;
import org.apache.log4j.Logger;
import org.openslx.filetransfer.FileRange;
import org.openslx.filetransfer.util.ChunkStatus;
import org.openslx.filetransfer.util.FileChunk;
import org.openslx.imagemaster.db.Database;
import org.openslx.imagemaster.db.MysqlConnection;
import org.openslx.imagemaster.db.MysqlStatement;
public class DbImageBlock
{
private static final Logger LOGGER = Logger.getLogger( DbImageBlock.class );
private static AsyncThread asyncBlockUpdate = null;
private static synchronized void initAsyncThread()
{
if ( asyncBlockUpdate == null ) {
asyncBlockUpdate = new AsyncThread();
asyncBlockUpdate.start();
}
}
public static void asyncUpdate( String imageVersionId, FileChunk chunk ) throws InterruptedException
{
initAsyncThread();
asyncBlockUpdate.put( new ChunkUpdate( imageVersionId, chunk.range, chunk.getStatus() != ChunkStatus.COMPLETE ) );
}
private static class AsyncThread extends Thread
{
private final ArrayBlockingQueue<ChunkUpdate> queue = new ArrayBlockingQueue<>( 100 );
public void put( ChunkUpdate chunk ) throws InterruptedException
{
queue.put( chunk );
}
@Override
public void run()
{
try {
while ( !interrupted() ) {
ChunkUpdate chunk = queue.take();
Thread.sleep( 100 );
try ( MysqlConnection connection = Database.getConnection() ) {
MysqlStatement stmt = connection.prepareStatement( "UPDATE imageblock SET ismissing = :ismissing"
+ " WHERE imageversionid = :imageversionid AND startbyte = :startbyte AND blocksize = :blocksize" );
do {
stmt.setBoolean( "ismissing", chunk.isMissing );
stmt.setString( "imageversionid", chunk.imageVersionId );
stmt.setLong( "startbyte", chunk.range.startOffset );
stmt.setInt( "blocksize", chunk.range.getLength() );
stmt.executeUpdate();
chunk = queue.poll();
} while ( chunk != null );
connection.commit();
} catch ( SQLException e ) {
LOGGER.error( "Query failed in DbImageBlock.AsyncThread.run()", e );
continue;
}
Thread.sleep( 2000 );
}
} catch ( InterruptedException e ) {
LOGGER.debug( "async thread interrupted" );
interrupt();
}
}
}
private static class ChunkUpdate
{
public final String imageVersionId;
public final FileRange range;
public final boolean isMissing;
public ChunkUpdate( String imageVersionId, FileRange range, boolean isMissing )
{
this.imageVersionId = imageVersionId;
this.range = range;
this.isMissing = isMissing;
}
}
public static void insertChunkList( String imageVersionId, List<FileChunk> all, boolean missing ) throws SQLException
{
try ( MysqlConnection connection = Database.getConnection() ) {
MysqlStatement stmt = connection.prepareStatement( "INSERT IGNORE INTO imageblock"
+ " (imageversionid, startbyte, blocksize, blocksha1, ismissing) VALUES"
+ " (:imageversionid, :startbyte, :blocksize, :blocksha1, :ismissing)" );
stmt.setString( "imageversionid", imageVersionId );
stmt.setBoolean( "ismissing", missing );
for ( FileChunk chunk : all ) {
stmt.setLong( "startbyte", chunk.range.startOffset );
stmt.setInt( "blocksize", chunk.range.getLength() );
stmt.setBinary( "blocksha1", chunk.getSha1Sum() );
stmt.executeUpdate();
}
connection.commit();
} catch ( SQLException e ) {
LOGGER.error( "Query failed in DbImageBlock.insertChunkList()", e );
throw e;
}
}
public static List<Boolean> getMissingStatusList( String imageVersionId ) throws SQLException
{
try ( MysqlConnection connection = Database.getConnection() ) {
MysqlStatement stmt = connection.prepareStatement( "SELECT startbyte, ismissing FROM imageblock"
+ " WHERE imageversionid = :imageversionid ORDER BY startbyte ASC" );
stmt.setString( "imageversionid", imageVersionId );
ResultSet rs = stmt.executeQuery();
List<Boolean> list = new ArrayList<>();
long expectedOffset = 0;
while ( rs.next() ) {
long currentOffset = rs.getLong( "startbyte" );
if ( currentOffset < expectedOffset )
continue;
while ( currentOffset > expectedOffset ) {
list.add( Boolean.TRUE );
expectedOffset += FileChunk.CHUNK_SIZE;
}
if ( currentOffset == expectedOffset ) {
list.add( rs.getBoolean( "ismissing" ) );
expectedOffset += FileChunk.CHUNK_SIZE;
}
}
return list;
} catch ( SQLException e ) {
LOGGER.error( "Query failed in DbImageBlock.getBlockStatuses()", e );
throw e;
}
}
public static List<ByteBuffer> getBlockHashes( String imageVersionId ) throws SQLException
{
try ( MysqlConnection connection = Database.getConnection() ) {
return getBlockHashes( connection, imageVersionId );
} catch ( SQLException e ) {
LOGGER.error( "Query failed in DbImageBlock.getBlockHashes()", e );
throw e;
}
}
private static List<ByteBuffer> getBlockHashes( MysqlConnection connection, String imageVersionId )
throws SQLException
{
MysqlStatement stmt = connection.prepareStatement( "SELECT startbyte, blocksha1 FROM imageblock"
+ " WHERE imageversionid = :imageversionid ORDER BY startbyte ASC" );
stmt.setString( "imageversionid", imageVersionId );
ResultSet rs = stmt.executeQuery();
List<ByteBuffer> list = new ArrayList<>();
long expectedOffset = 0;
while ( rs.next() ) {
long currentOffset = rs.getLong( "startbyte" );
if ( currentOffset < expectedOffset )
continue;
while ( currentOffset > expectedOffset ) {
list.add( null );
expectedOffset += FileChunk.CHUNK_SIZE;
}
if ( currentOffset == expectedOffset ) {
list.add( ByteBuffer.wrap( rs.getBytes( "blocksha1" ) ) );
expectedOffset += FileChunk.CHUNK_SIZE;
}
}
return list;
}
}
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