| /** |
| * 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.kafka.common; |
| |
| /** |
| * Information about a topic-partition. |
| */ |
| public class PartitionInfo { |
| |
| private final String topic; |
| private final int partition; |
| private final Node leader; |
| private final Node[] replicas; |
| private final Node[] inSyncReplicas; |
| |
| public PartitionInfo(String topic, int partition, Node leader, Node[] replicas, Node[] inSyncReplicas) { |
| this.topic = topic; |
| this.partition = partition; |
| this.leader = leader; |
| this.replicas = replicas; |
| this.inSyncReplicas = inSyncReplicas; |
| } |
| |
| /** |
| * The topic name |
| */ |
| public String topic() { |
| return topic; |
| } |
| |
| /** |
| * The partition id |
| */ |
| public int partition() { |
| return partition; |
| } |
| |
| /** |
| * The node id of the node currently acting as a leader for this partition or null if there is no leader |
| */ |
| public Node leader() { |
| return leader; |
| } |
| |
| /** |
| * The complete set of replicas for this partition regardless of whether they are alive or up-to-date |
| */ |
| public Node[] replicas() { |
| return replicas; |
| } |
| |
| /** |
| * The subset of the replicas that are in sync, that is caught-up to the leader and ready to take over as leader if |
| * the leader should fail |
| */ |
| public Node[] inSyncReplicas() { |
| return inSyncReplicas; |
| } |
| |
| @Override |
| public String toString() { |
| return String.format("Partition(topic = %s, partition = %d, leader = %s, replicas = %s, isr = %s", |
| topic, |
| partition, |
| leader == null ? "none" : leader.id(), |
| fmtNodeIds(replicas), |
| fmtNodeIds(inSyncReplicas)); |
| } |
| |
| /* Extract the node ids from each item in the array and format for display */ |
| private String fmtNodeIds(Node[] nodes) { |
| StringBuilder b = new StringBuilder("["); |
| for (int i = 0; i < nodes.length - 1; i++) { |
| b.append(Integer.toString(nodes[i].id())); |
| b.append(','); |
| } |
| if (nodes.length > 0) { |
| b.append(Integer.toString(nodes[nodes.length - 1].id())); |
| b.append(','); |
| } |
| b.append("]"); |
| return b.toString(); |
| } |
| |
| } |