Java tutorial
/** * 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 = new NamespaceName(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; } }