| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.server.core.partition.impl.btree.mavibot; |
| |
| |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.io.RandomAccessFile; |
| import java.nio.charset.StandardCharsets; |
| |
| import org.apache.directory.api.ldap.model.entry.DefaultEntry; |
| import org.apache.directory.api.ldap.model.entry.Entry; |
| import org.apache.directory.api.ldap.model.ldif.LdifEntry; |
| import org.apache.directory.api.ldap.model.ldif.LdifReader; |
| import org.apache.directory.api.ldap.model.name.Dn; |
| import org.apache.directory.api.ldap.model.schema.SchemaManager; |
| import org.apache.directory.mavibot.btree.Tuple; |
| import org.apache.directory.mavibot.btree.util.TupleReaderWriter; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * TODO LdifTupleReaderWriter. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class LdifTupleReaderWriter<E> implements TupleReaderWriter<Dn, E> |
| { |
| |
| private LdifReader reader = null; |
| |
| private static final Logger LOG = LoggerFactory.getLogger( LdifTupleReaderWriter.class ); |
| |
| private String ldifFile; |
| |
| private RandomAccessFile raf; |
| |
| private SchemaManager schemaManager; |
| |
| public LdifTupleReaderWriter( String ldifFile, SchemaManager schemaManager ) |
| { |
| this.ldifFile = ldifFile; |
| this.schemaManager = schemaManager; |
| |
| try |
| { |
| raf = new RandomAccessFile( ldifFile, "r" ); |
| } |
| catch ( Exception e ) |
| { |
| throw new RuntimeException( e ); |
| } |
| } |
| |
| |
| @Override |
| public Tuple<Dn, E> readSortedTuple( DataInputStream in ) |
| { |
| try |
| { |
| if ( in.available() > 0 ) |
| { |
| Tuple<Dn, E> tuple = new Tuple<>(); |
| tuple.setKey( new Dn( in.readUTF() ) ); |
| |
| String[] tokens = in.readUTF().split( ":" ); |
| |
| long offset = Long.parseLong( tokens[0] ); |
| |
| int length = Integer.parseInt( tokens[1] ); |
| |
| raf.seek( offset ); |
| |
| byte[] data = new byte[length]; |
| |
| raf.read( data, 0, length ); |
| |
| try ( LdifReader ldifReader = new LdifReader() ) |
| { |
| LdifEntry ldifEntry = ldifReader.parseLdif( new String( data, StandardCharsets.UTF_8 ) ).get( 0 ); |
| Entry entry = new DefaultEntry( schemaManager, ldifEntry.getEntry() ); |
| |
| tuple.setValue( ( E ) entry ); |
| } |
| |
| return tuple; |
| } |
| } |
| catch ( Exception e ) |
| { |
| LOG.error( "Failed to read a sorted tuple", e ); |
| } |
| |
| return null; |
| } |
| |
| |
| @Override |
| public Tuple<Dn, E> readUnsortedTuple( DataInputStream in ) |
| { |
| try |
| { |
| if ( reader == null ) |
| { |
| reader = new LdifReader( in ); |
| } |
| } |
| catch ( Exception e ) |
| { |
| String msg = "Failed to open the LDIF input stream"; |
| LOG.error( msg, e ); |
| |
| throw new RuntimeException( msg, e ); |
| } |
| |
| Tuple<Dn, E> t = null; |
| |
| if ( reader.hasNext() ) |
| { |
| LdifEntry ldifEntry = reader.next(); |
| |
| if ( ldifEntry == null ) |
| { |
| throw new IllegalStateException( |
| "Received null entry while parsing, check the LDIF file for possible incorrect/corrupted entries" ); |
| } |
| |
| t = new Tuple<>(); |
| |
| t.setKey( ldifEntry.getDn() ); |
| t.setValue( ( E ) ( ldifEntry.getOffset() + ":" + ldifEntry.getLengthBeforeParsing() ) ); |
| } |
| |
| return t; |
| } |
| |
| |
| @Override |
| public void storeSortedTuple( Tuple<Dn, E> t, DataOutputStream out ) throws IOException |
| { |
| out.writeUTF( t.getKey().getName() ); |
| out.writeUTF( ( String ) t.getValue() ); |
| } |
| |
| } |