/*
* Copyright © 2014 Cask Data, Inc.
*
* 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 co.cask.tigon.internal.app.runtime;
import co.cask.tephra.TransactionAware;
import co.cask.tephra.TransactionContext;
import co.cask.tephra.TransactionSystemClient;
import co.cask.tigon.data.queue.ConsumerConfig;
import co.cask.tigon.data.queue.QueueClientFactory;
import co.cask.tigon.data.queue.QueueConsumer;
import co.cask.tigon.data.queue.QueueName;
import co.cask.tigon.data.queue.QueueProducer;
import co.cask.tigon.data.transaction.queue.QueueMetrics;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
import java.io.IOException;
import java.util.Set;
/**
* Abstract base class for implementing DataFabricFacade.
*/
public abstract class AbstractDataFabricFacade implements DataFabricFacade {
private final QueueClientFactory queueClientFactory;
private final TransactionSystemClient txSystemClient;
private final Set<TransactionAware> txAware = Sets.newIdentityHashSet();
public AbstractDataFabricFacade(TransactionSystemClient txSystemClient, QueueClientFactory queueClientFactory) {
this.txSystemClient = txSystemClient;
this.queueClientFactory = queueClientFactory;
}
@Override
public TransactionContext createTransactionManager() {
return new TransactionContext(txSystemClient, Iterables.unmodifiableIterable(txAware));
}
@Override
public QueueProducer createProducer(QueueName queueName) throws IOException {
return createProducer(queueName, QueueMetrics.NOOP_QUEUE_METRICS);
}
@Override
public QueueConsumer createConsumer(QueueName queueName,
ConsumerConfig consumerConfig, int numGroups) throws IOException {
QueueConsumer consumer = queueClientFactory.createConsumer(queueName, consumerConfig, numGroups);
if (consumer instanceof TransactionAware) {
consumer = new CloseableQueueConsumer(this, consumer);
txAware.add((TransactionAware) consumer);
}
return consumer;
}
@Override
public QueueProducer createProducer(QueueName queueName, QueueMetrics queueMetrics) throws IOException {
QueueProducer producer = queueClientFactory.createProducer(queueName, queueMetrics);
if (producer instanceof TransactionAware) {
txAware.add((TransactionAware) producer);
}
return producer;
}
public void removeTransactionAware(TransactionAware transactionAware) {
txAware.remove(transactionAware);
}
}