| /* |
| * 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.iotdb.commons.subscription.meta.subscription; |
| |
| import org.apache.tsfile.utils.PublicBAOS; |
| import org.apache.tsfile.utils.ReadWriteIOUtils; |
| |
| import java.io.DataOutputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.ByteBuffer; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** SubscriptionMeta is created for show subscription and is not stored in meta keeper. */ |
| public class SubscriptionMeta { |
| |
| private String topicName; |
| private String consumerGroupId; |
| private Set<String> consumerIds; |
| |
| private SubscriptionMeta() { |
| // Empty constructor |
| } |
| |
| public SubscriptionMeta(String topicName, String consumerGroupId, Set<String> consumerIds) { |
| this.topicName = topicName; |
| this.consumerGroupId = consumerGroupId; |
| this.consumerIds = consumerIds; |
| } |
| |
| public String getTopicName() { |
| return topicName; |
| } |
| |
| public String getConsumerGroupId() { |
| return consumerGroupId; |
| } |
| |
| public Set<String> getConsumerIds() { |
| return consumerIds; |
| } |
| |
| public ByteBuffer serialize() throws IOException { |
| PublicBAOS byteArrayOutputStream = new PublicBAOS(); |
| DataOutputStream outputStream = new DataOutputStream(byteArrayOutputStream); |
| serialize(outputStream); |
| return ByteBuffer.wrap(byteArrayOutputStream.getBuf(), 0, byteArrayOutputStream.size()); |
| } |
| |
| public void serialize(DataOutputStream outputStream) throws IOException { |
| ReadWriteIOUtils.write(topicName, outputStream); |
| ReadWriteIOUtils.write(consumerGroupId, outputStream); |
| |
| ReadWriteIOUtils.write(consumerIds.size(), outputStream); |
| for (String consumerId : consumerIds) { |
| ReadWriteIOUtils.write(consumerId, outputStream); |
| } |
| } |
| |
| public void serialize(FileOutputStream outputStream) throws IOException { |
| ReadWriteIOUtils.write(topicName, outputStream); |
| ReadWriteIOUtils.write(consumerGroupId, outputStream); |
| |
| ReadWriteIOUtils.write(consumerIds.size(), outputStream); |
| for (String consumerId : consumerIds) { |
| ReadWriteIOUtils.write(consumerId, outputStream); |
| } |
| } |
| |
| public static SubscriptionMeta deserialize(InputStream inputStream) throws IOException { |
| final SubscriptionMeta subscriptionMeta = new SubscriptionMeta(); |
| |
| subscriptionMeta.topicName = ReadWriteIOUtils.readString(inputStream); |
| subscriptionMeta.consumerGroupId = ReadWriteIOUtils.readString(inputStream); |
| subscriptionMeta.consumerIds = new HashSet<>(); |
| |
| int size = ReadWriteIOUtils.readInt(inputStream); |
| for (int i = 0; i < size; i++) { |
| subscriptionMeta.consumerIds.add(ReadWriteIOUtils.readString(inputStream)); |
| } |
| |
| return subscriptionMeta; |
| } |
| |
| public static SubscriptionMeta deserialize(ByteBuffer byteBuffer) { |
| final SubscriptionMeta subscriptionMeta = new SubscriptionMeta(); |
| |
| subscriptionMeta.topicName = ReadWriteIOUtils.readString(byteBuffer); |
| subscriptionMeta.consumerGroupId = ReadWriteIOUtils.readString(byteBuffer); |
| subscriptionMeta.consumerIds = new HashSet<>(); |
| |
| int size = ReadWriteIOUtils.readInt(byteBuffer); |
| for (int i = 0; i < size; i++) { |
| subscriptionMeta.consumerIds.add(ReadWriteIOUtils.readString(byteBuffer)); |
| } |
| |
| return subscriptionMeta; |
| } |
| } |