org.apache.pulsar.common.naming.SystemTopicNames Maven / Gradle / Ivy
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* distributed with this work for additional information
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* 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
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* specific language governing permissions and limitations
* under the License.
*/
package org.apache.pulsar.common.naming;
import org.apache.pulsar.shade.com.google.common.collect.Sets;
import java.util.Collections;
import java.util.Set;
/**
* Encapsulate the parsing of the completeTopicName name.
*/
public class SystemTopicNames {
/**
* 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";
/**
* Local topic name for the transaction buffer snapshot segments.
*/
public static final String TRANSACTION_BUFFER_SNAPSHOT_SEGMENTS = "__transaction_buffer_snapshot_segments";
/**
* Local topic name for the transaction buffer snapshot indexes.
*/
public static final String TRANSACTION_BUFFER_SNAPSHOT_INDEXES = "__transaction_buffer_snapshot_indexes";
public static final String PENDING_ACK_STORE_SUFFIX = "__transaction_pending_ack";
public static final String PENDING_ACK_STORE_CURSOR_NAME = "__pending_ack_state";
/**
* Prefix for the system reader for all the system topics.
*/
public static final String SYSTEM_READER_PREFIX = "__system_reader";
/**
* The set of all local topic names declared above.
*/
public static final Set EVENTS_TOPIC_NAMES =
Collections.unmodifiableSet(Sets.newHashSet(NAMESPACE_EVENTS_LOCAL_NAME, TRANSACTION_BUFFER_SNAPSHOT,
TRANSACTION_BUFFER_SNAPSHOT_INDEXES, TRANSACTION_BUFFER_SNAPSHOT_SEGMENTS));
public static final TopicName TRANSACTION_COORDINATOR_ASSIGN = TopicName.get(TopicDomain.persistent.value(),
NamespaceName.SYSTEM_NAMESPACE, "transaction_coordinator_assign");
public static final TopicName TRANSACTION_COORDINATOR_LOG = TopicName.get(TopicDomain.persistent.value(),
NamespaceName.SYSTEM_NAMESPACE, "__transaction_log_");
public static final TopicName RESOURCE_USAGE_TOPIC = TopicName.get(TopicDomain.non_persistent.value(),
NamespaceName.SYSTEM_NAMESPACE, "resource-usage");
public static boolean isEventSystemTopic(TopicName topicName) {
return EVENTS_TOPIC_NAMES.contains(TopicName.get(topicName.getPartitionedTopicName()).getLocalName());
}
public static boolean isTransactionCoordinatorAssign(TopicName topicName) {
return topicName != null && topicName.toString()
.startsWith(TRANSACTION_COORDINATOR_ASSIGN.toString());
}
public static boolean isTopicPoliciesSystemTopic(String topic) {
if (topic == null) {
return false;
}
return TopicName.getPartitionedTopicName(topic).getLocalName().equals(NAMESPACE_EVENTS_LOCAL_NAME);
}
public static boolean isTransactionInternalName(TopicName topicName) {
String topic = topicName.toString();
return topic.startsWith(TRANSACTION_COORDINATOR_ASSIGN.toString())
|| topic.startsWith(TRANSACTION_COORDINATOR_LOG.toString())
|| topic.endsWith(PENDING_ACK_STORE_SUFFIX);
}
public static boolean isSystemTopic(TopicName topicName) {
TopicName nonPartitionedTopicName = TopicName.get(topicName.getPartitionedTopicName());
return isEventSystemTopic(nonPartitionedTopicName) || isTransactionInternalName(nonPartitionedTopicName);
}
}