pulsar-broker/src/test/java/org/apache/pulsar/broker/loadbalance/LoadBalancerTestingUtils.java

/*
 * 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.pulsar.broker.loadbalance;

import org.apache.pulsar.common.naming.NamespaceBundle;
import org.apache.pulsar.common.naming.NamespaceBundleFactory;
import org.apache.pulsar.common.naming.NamespaceBundles;
import org.apache.pulsar.common.naming.NamespaceName;

import com.google.common.collect.BoundType;
import com.google.common.collect.Range;

public class LoadBalancerTestingUtils {
    public static NamespaceBundle[] makeBundles(final NamespaceBundleFactory nsFactory, final String property,
            final String cluster, final String namespace, final int numBundles) {
        final NamespaceBundle[] result = new NamespaceBundle[numBundles];
        final NamespaceName namespaceName = NamespaceName.get(property, cluster, namespace);
        for (int i = 0; i < numBundles - 1; ++i) {
            final long lower = NamespaceBundles.FULL_UPPER_BOUND * i / numBundles;
            final long upper = NamespaceBundles.FULL_UPPER_BOUND * (i + 1) / numBundles;
            result[i] = nsFactory.getBundle(namespaceName, Range.range(lower, BoundType.CLOSED, upper, BoundType.OPEN));
        }
        result[numBundles - 1] = nsFactory.getBundle(namespaceName,
                Range.range(NamespaceBundles.FULL_UPPER_BOUND * (numBundles - 1) / numBundles, BoundType.CLOSED,
                        NamespaceBundles.FULL_UPPER_BOUND, BoundType.CLOSED));
        return result;
    }
}