/*******************************************************************************
* Copyright (c) 2013, Equal Experts Ltd
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of the Tayra Project.
******************************************************************************/
package com.ee.tayra.io.writer;
import com.ee.tayra.domain.operation.Operation;
import com.ee.tayra.domain.operation.OperationFailed;
import com.ee.tayra.domain.operation.OperationsFactory;
public class OplogReplayer implements Replayer {
private final OperationsFactory operations;
private WriteNotifier notifier;
public OplogReplayer(final OperationsFactory operations) {
this.operations = operations;
notifier = WriteNotifier.NONE;
}
public final void setNotifier(final WriteNotifier notifier) {
this.notifier = notifier;
}
@Override
public void replay(final String document) {
try {
notifier.notifyWriteStart(document);
final String operationCode = extractOpcode(document);
Operation operation = operations.get(operationCode);
operation.execute(document);
notifier.notifyWriteSuccess(document);
} catch (OperationFailed problem) {
notifier.notifyWriteFailure(document, problem);
if (problem.isConnectionLost()) {
throw problem;
}
}
}
private String extractOpcode(final String document) {
int opcodeStartIndex = document.indexOf("op") - 1;
int opcodeEndIndex = document.indexOf(",", opcodeStartIndex);
String opcodeSpec = document
.substring(opcodeStartIndex, opcodeEndIndex);
String quotedOpcode = opcodeSpec.split(":")[1];
return quotedOpcode.replaceAll("\"", "").trim();
}
}