| /* |
| * 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.bookkeeper.clients.impl.internal.api; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| import java.util.Collections; |
| import java.util.NavigableMap; |
| import lombok.Data; |
| import lombok.EqualsAndHashCode; |
| import lombok.RequiredArgsConstructor; |
| import lombok.ToString; |
| import org.apache.bookkeeper.stream.proto.RangeKeyType; |
| import org.apache.bookkeeper.stream.proto.RangeProperties; |
| |
| /** |
| * The active ranges for a given stream at a given time. |
| */ |
| @Data |
| @EqualsAndHashCode |
| @ToString |
| @RequiredArgsConstructor |
| public abstract class StreamRanges<T> { |
| |
| public static HashStreamRanges ofHash(RangeKeyType keyType, |
| NavigableMap<Long, RangeProperties> ranges) { |
| checkArgument(RangeKeyType.HASH == keyType, |
| "Only hash routing is supported now. %s is not supported.", keyType); |
| NavigableMap<Long, RangeProperties> readOnlyRanges = Collections.unmodifiableNavigableMap(ranges); |
| long maxRangeId = 0L; |
| for (RangeProperties props : ranges.values()) { |
| maxRangeId = Math.max(maxRangeId, props.getRangeId()); |
| } |
| return new HashStreamRanges(readOnlyRanges, maxRangeId); |
| } |
| |
| private final RangeKeyType keyType; |
| private final NavigableMap<T, RangeProperties> ranges; |
| // the id (which is basically the max id among the ranges) |
| // that tracks the changes to the range list of a stream. |
| // the id here can be easily used for syncing the range list by |
| // just comparing the id seen at client side and the id seen |
| // at server side. |
| private final long maxRangeId; |
| |
| } |