/
EventsTopicNames.java
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/
EventsTopicNames.java
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/**
* 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.events;
import com.google.common.collect.Sets;
import java.util.Collections;
import java.util.Set;
import org.apache.pulsar.common.naming.TopicName;
/**
* System topic names for each {@link EventType}.
*/
public class EventsTopicNames {
/**
* Local topic name for the namespace events.
*/
public static final String NAMESPACE_EVENTS_LOCAL_NAME = "__change_events";
/**
* Local topic name for the transaction buffer snapshot.
*/
public static final String TRANSACTION_BUFFER_SNAPSHOT = "__transaction_buffer_snapshot";
/**
* The set of all local topic names declared above.
*/
public static final Set<String> EVENTS_TOPIC_NAMES =
Collections.unmodifiableSet(Sets.newHashSet(NAMESPACE_EVENTS_LOCAL_NAME, TRANSACTION_BUFFER_SNAPSHOT));
public static boolean checkTopicIsEventsNames(TopicName topicName) {
return EVENTS_TOPIC_NAMES.contains(TopicName.get(topicName.getPartitionedTopicName()).getLocalName());
}
public static boolean checkTopicIsTransactionCoordinatorAssign(TopicName topicName) {
return topicName != null && topicName.toString()
.startsWith(TopicName.TRANSACTION_COORDINATOR_ASSIGN.toString());
}
}