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/*
* Copyright 2006-2012 Amazon Technologies, Inc. or its affiliates.
* Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
* of Amazon Technologies, Inc. or its affiliates. All rights reserved.
*
* Licensed 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 com.amazon.carbonado.repo.logging;
import java.util.concurrent.atomic.AtomicReference;
import com.amazon.carbonado.IsolationLevel;
import com.amazon.carbonado.Repository;
import com.amazon.carbonado.RepositoryException;
import com.amazon.carbonado.Storable;
import com.amazon.carbonado.Storage;
import com.amazon.carbonado.SupportException;
import com.amazon.carbonado.Transaction;
import com.amazon.carbonado.capability.Capability;
import com.amazon.carbonado.spi.StoragePool;
/**
*
*
* @author Brian S O'Neill
*/
class LoggingRepository implements Repository, LogAccessCapability {
private final AtomicReference<Repository> mRootRef;
private final Repository mRepo;
private final Log mLog;
private final StoragePool mStoragePool;
private final ThreadLocal<LoggingTransaction> mActiveTxn =
new ThreadLocal<LoggingTransaction>();
LoggingRepository(AtomicReference<Repository> rootRef,
Repository actual, Log log)
{
mRootRef = rootRef;
mRepo = actual;
mLog = log;
mStoragePool = new StoragePool() {
@Override
protected <S extends Storable> Storage<S> createStorage(Class<S> type)
throws RepositoryException
{
return new LoggingStorage(LoggingRepository.this, mRepo.storageFor(type));
}
};
}
public String getName() {
return mRepo.getName();
}
public <S extends Storable> Storage<S> storageFor(Class<S> type)
throws SupportException, RepositoryException
{
return mStoragePool.get(type);
}
public Transaction enterTransaction() {
mLog.write("Repository.enterTransaction()");
return new LoggingTransaction(mActiveTxn, mLog, mRepo.enterTransaction(), false);
}
public Transaction enterTransaction(IsolationLevel level) {
if (mLog.isEnabled()) {
mLog.write("Repository.enterTransaction(" + level + ')');
}
return new LoggingTransaction(mActiveTxn, mLog, mRepo.enterTransaction(level), false);
}
public Transaction enterTopTransaction(IsolationLevel level) {
if (mLog.isEnabled()) {
mLog.write("Repository.enterTopTransaction(" + level + ')');
}
return new LoggingTransaction(mActiveTxn, mLog, mRepo.enterTopTransaction(level), true);
}
public IsolationLevel getTransactionIsolationLevel() {
return mRepo.getTransactionIsolationLevel();
}
public <C extends Capability> C getCapability(Class<C> capabilityType) {
if (capabilityType.isInstance(this)) {
return (C) this;
}
return mRepo.getCapability(capabilityType);
}
public void close() {
mRepo.close();
}
/*
public boolean isClosed() {
return mRepo.isClosed();
}
*/
public Log getLog() {
return mLog;
}
Repository getRootRepository() {
return mRootRef.get();
}
}
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