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/*
* 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.tuscany.persistence.store.journal;
import java.io.IOException;
import org.apache.tuscany.spi.services.store.StoreWriteException;
import org.objectweb.howl.log.Configuration;
import org.objectweb.howl.log.LogClosedException;
import org.objectweb.howl.log.LogFileOverflowException;
import org.objectweb.howl.log.LogRecordSizeException;
import org.objectweb.howl.log.Logger;
/**
* Extends the HOWL logger implementation adding convenience methods for processing records
*
* @version $Rev$ $Date$
*/
public class Journal extends Logger {
public static final short HEADER = 0;
public static final short RECORD = 1;
public Journal() throws IOException {
}
public Journal(Configuration config) throws IOException {
super(config);
}
/**
* Writes a header record to the log. The format of the header is defined by {@link
* SerializationHelper#createHeader(short, int, String, String, long)}
*
* @param bytes the record as a byte array
* @param force true if the disk write should be forced
* @return the log entry key
* @throws StoreWriteException
*/
public long writeHeader(byte[] bytes, boolean force) throws StoreWriteException {
try {
return put(HEADER, new byte[][]{bytes}, force);
} catch (LogRecordSizeException e) {
throw new StoreWriteException(e);
} catch (LogFileOverflowException e) {
throw new StoreWriteException(e);
} catch (IOException e) {
throw new StoreWriteException(e);
} catch (LogClosedException e) {
throw new StoreWriteException(e);
} catch (InterruptedException e) {
throw new StoreWriteException(e);
}
}
/**
* Writes a record block to the log. The block may be the complete number of bytes or a chunked part of thereof if
* it does not fit within HOWL's block size limit.
*
* @param data the data to write
* @param id the unique record id consisting of the owner id and the UUID
* @param force true if the disk write should be force. For records that are written in multiple blocks, only the
* last write should be forced.
* @return the log entry key
* @throws StoreWriteException
*/
public long writeBlock(byte[] data, byte[] id, boolean force) throws StoreWriteException {
try {
return put(RECORD, new byte[][]{id, data}, force);
} catch (LogRecordSizeException e) {
throw new StoreWriteException(e);
} catch (LogFileOverflowException e) {
throw new StoreWriteException(e);
} catch (IOException e) {
throw new StoreWriteException(e);
} catch (LogClosedException e) {
throw new StoreWriteException(e);
} catch (InterruptedException e) {
throw new StoreWriteException(e);
}
}
}
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