| /** |
| * 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.common.naming; |
| |
| import com.google.common.collect.Lists; |
| import java.util.List; |
| import java.util.concurrent.CompletableFuture; |
| import org.apache.pulsar.broker.namespace.NamespaceService; |
| |
| /** |
| * Algorithm interface for namespace bundle split. |
| */ |
| public interface NamespaceBundleSplitAlgorithm { |
| |
| String RANGE_EQUALLY_DIVIDE_NAME = "range_equally_divide"; |
| String TOPIC_COUNT_EQUALLY_DIVIDE = "topic_count_equally_divide"; |
| |
| List<String> AVAILABLE_ALGORITHMS = Lists.newArrayList(RANGE_EQUALLY_DIVIDE_NAME, TOPIC_COUNT_EQUALLY_DIVIDE); |
| |
| NamespaceBundleSplitAlgorithm RANGE_EQUALLY_DIVIDE_ALGO = new RangeEquallyDivideBundleSplitAlgorithm(); |
| NamespaceBundleSplitAlgorithm TOPIC_COUNT_EQUALLY_DIVIDE_ALGO = new TopicCountEquallyDivideBundleSplitAlgorithm(); |
| |
| static NamespaceBundleSplitAlgorithm of(String algorithmName) { |
| if (algorithmName == null) { |
| return null; |
| } |
| switch (algorithmName) { |
| case RANGE_EQUALLY_DIVIDE_NAME: |
| return RANGE_EQUALLY_DIVIDE_ALGO; |
| case TOPIC_COUNT_EQUALLY_DIVIDE: |
| return TOPIC_COUNT_EQUALLY_DIVIDE_ALGO; |
| default: |
| return null; |
| } |
| } |
| |
| CompletableFuture<Long> getSplitBoundary(NamespaceService service, NamespaceBundle bundle); |
| } |