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/*
* Copyright 2015 Open Networking Laboratory
*
* 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 org.onosproject.store.consistent.impl;
import org.onosproject.store.service.DistributedQueue;
import org.onosproject.store.service.DistributedQueueBuilder;
import org.onosproject.store.service.Serializer;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;
/**
* Default implementation of a {@code DistributedQueueBuilder}.
*
* @param <E> queue entry type
*/
public class DefaultDistributedQueueBuilder<E> implements DistributedQueueBuilder<E> {
private Serializer serializer;
private String name;
private boolean persistenceEnabled = true;
private final DatabaseManager databaseManager;
private boolean metering = true;
public DefaultDistributedQueueBuilder(DatabaseManager databaseManager) {
this.databaseManager = databaseManager;
}
@Override
public DistributedQueueBuilder<E> withName(String name) {
checkArgument(name != null && !name.isEmpty());
this.name = name;
return this;
}
@Override
public DistributedQueueBuilder<E> withSerializer(Serializer serializer) {
checkArgument(serializer != null);
this.serializer = serializer;
return this;
}
@Override
public DistributedQueueBuilder<E> withMeteringDisabled() {
metering = false;
return this;
}
@Override
public DistributedQueueBuilder<E> withPersistenceDisabled() {
persistenceEnabled = false;
return this;
}
private boolean validInputs() {
return name != null && serializer != null;
}
@Override
public DistributedQueue<E> build() {
checkState(validInputs());
return new DefaultDistributedQueue<>(
name,
persistenceEnabled ? databaseManager.partitionedDatabase : databaseManager.inMemoryDatabase,
serializer,
metering);
}
}
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