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org.apache.rocketmq.broker.topic.TopicConfigManager Maven / Gradle / Ivy
/*
* 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.rocketmq.broker.topic;
import com.google.common.collect.ImmutableMap;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.apache.commons.lang3.StringUtils;
import org.apache.rocketmq.broker.BrokerController;
import org.apache.rocketmq.broker.BrokerPathConfigHelper;
import org.apache.rocketmq.common.ConfigManager;
import org.apache.rocketmq.common.MixAll;
import org.apache.rocketmq.common.PopAckConstants;
import org.apache.rocketmq.common.TopicAttributes;
import org.apache.rocketmq.common.TopicConfig;
import org.apache.rocketmq.common.attribute.Attribute;
import org.apache.rocketmq.common.attribute.AttributeUtil;
import org.apache.rocketmq.common.constant.LoggerName;
import org.apache.rocketmq.common.constant.PermName;
import org.apache.rocketmq.common.sysflag.TopicSysFlag;
import org.apache.rocketmq.common.topic.TopicValidator;
import org.apache.rocketmq.logging.org.slf4j.Logger;
import org.apache.rocketmq.logging.org.slf4j.LoggerFactory;
import org.apache.rocketmq.remoting.protocol.DataVersion;
import org.apache.rocketmq.remoting.protocol.body.KVTable;
import org.apache.rocketmq.remoting.protocol.body.TopicConfigSerializeWrapper;
import static com.google.common.base.Preconditions.checkNotNull;
public class TopicConfigManager extends ConfigManager {
private static final Logger log = LoggerFactory.getLogger(LoggerName.BROKER_LOGGER_NAME);
private static final long LOCK_TIMEOUT_MILLIS = 3000;
private static final int SCHEDULE_TOPIC_QUEUE_NUM = 18;
private transient final Lock topicConfigTableLock = new ReentrantLock();
private ConcurrentMap topicConfigTable = new ConcurrentHashMap<>(1024);
private DataVersion dataVersion = new DataVersion();
private transient BrokerController brokerController;
public TopicConfigManager() {
}
public TopicConfigManager(BrokerController brokerController) {
this.brokerController = brokerController;
{
String topic = TopicValidator.RMQ_SYS_SELF_TEST_TOPIC;
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(1);
topicConfig.setWriteQueueNums(1);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
{
if (this.brokerController.getBrokerConfig().isAutoCreateTopicEnable()) {
String topic = TopicValidator.AUTO_CREATE_TOPIC_KEY_TOPIC;
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(this.brokerController.getBrokerConfig()
.getDefaultTopicQueueNums());
topicConfig.setWriteQueueNums(this.brokerController.getBrokerConfig()
.getDefaultTopicQueueNums());
int perm = PermName.PERM_INHERIT | PermName.PERM_READ | PermName.PERM_WRITE;
topicConfig.setPerm(perm);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
}
{
String topic = TopicValidator.RMQ_SYS_BENCHMARK_TOPIC;
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(1024);
topicConfig.setWriteQueueNums(1024);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
{
String topic = this.brokerController.getBrokerConfig().getBrokerClusterName();
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
int perm = PermName.PERM_INHERIT;
if (this.brokerController.getBrokerConfig().isClusterTopicEnable()) {
perm |= PermName.PERM_READ | PermName.PERM_WRITE;
}
topicConfig.setPerm(perm);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
{
String topic = this.brokerController.getBrokerConfig().getBrokerName();
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
int perm = PermName.PERM_INHERIT;
if (this.brokerController.getBrokerConfig().isBrokerTopicEnable()) {
perm |= PermName.PERM_READ | PermName.PERM_WRITE;
}
topicConfig.setReadQueueNums(1);
topicConfig.setWriteQueueNums(1);
topicConfig.setPerm(perm);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
{
String topic = TopicValidator.RMQ_SYS_OFFSET_MOVED_EVENT;
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(1);
topicConfig.setWriteQueueNums(1);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
{
String topic = TopicValidator.RMQ_SYS_SCHEDULE_TOPIC;
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(SCHEDULE_TOPIC_QUEUE_NUM);
topicConfig.setWriteQueueNums(SCHEDULE_TOPIC_QUEUE_NUM);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
{
if (this.brokerController.getBrokerConfig().isTraceTopicEnable()) {
String topic = this.brokerController.getBrokerConfig().getMsgTraceTopicName();
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(1);
topicConfig.setWriteQueueNums(1);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
}
{
String topic = this.brokerController.getBrokerConfig().getBrokerClusterName() + "_" + MixAll.REPLY_TOPIC_POSTFIX;
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(1);
topicConfig.setWriteQueueNums(1);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
{
// PopAckConstants.REVIVE_TOPIC
String topic = PopAckConstants.buildClusterReviveTopic(this.brokerController.getBrokerConfig().getBrokerClusterName());
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(this.brokerController.getBrokerConfig().getReviveQueueNum());
topicConfig.setWriteQueueNums(this.brokerController.getBrokerConfig().getReviveQueueNum());
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
{
// sync broker member group topic
String topic = TopicValidator.SYNC_BROKER_MEMBER_GROUP_PREFIX + this.brokerController.getBrokerConfig().getBrokerName();
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(1);
topicConfig.setWriteQueueNums(1);
topicConfig.setPerm(PermName.PERM_INHERIT);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
{
// TopicValidator.RMQ_SYS_TRANS_HALF_TOPIC
String topic = TopicValidator.RMQ_SYS_TRANS_HALF_TOPIC;
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(1);
topicConfig.setWriteQueueNums(1);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
{
// TopicValidator.RMQ_SYS_TRANS_OP_HALF_TOPIC
String topic = TopicValidator.RMQ_SYS_TRANS_OP_HALF_TOPIC;
TopicConfig topicConfig = new TopicConfig(topic);
TopicValidator.addSystemTopic(topic);
topicConfig.setReadQueueNums(1);
topicConfig.setWriteQueueNums(1);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
}
}
public TopicConfig selectTopicConfig(final String topic) {
return this.topicConfigTable.get(topic);
}
public TopicConfig createTopicInSendMessageMethod(final String topic, final String defaultTopic,
final String remoteAddress, final int clientDefaultTopicQueueNums, final int topicSysFlag) {
TopicConfig topicConfig = null;
boolean createNew = false;
try {
if (this.topicConfigTableLock.tryLock(LOCK_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS)) {
try {
topicConfig = this.topicConfigTable.get(topic);
if (topicConfig != null) {
return topicConfig;
}
TopicConfig defaultTopicConfig = this.topicConfigTable.get(defaultTopic);
if (defaultTopicConfig != null) {
if (defaultTopic.equals(TopicValidator.AUTO_CREATE_TOPIC_KEY_TOPIC)) {
if (!this.brokerController.getBrokerConfig().isAutoCreateTopicEnable()) {
defaultTopicConfig.setPerm(PermName.PERM_READ | PermName.PERM_WRITE);
}
}
if (PermName.isInherited(defaultTopicConfig.getPerm())) {
topicConfig = new TopicConfig(topic);
int queueNums = Math.min(clientDefaultTopicQueueNums, defaultTopicConfig.getWriteQueueNums());
if (queueNums < 0) {
queueNums = 0;
}
topicConfig.setReadQueueNums(queueNums);
topicConfig.setWriteQueueNums(queueNums);
int perm = defaultTopicConfig.getPerm();
perm &= ~PermName.PERM_INHERIT;
topicConfig.setPerm(perm);
topicConfig.setTopicSysFlag(topicSysFlag);
topicConfig.setTopicFilterType(defaultTopicConfig.getTopicFilterType());
} else {
log.warn("Create new topic failed, because the default topic[{}] has no perm [{}] producer:[{}]",
defaultTopic, defaultTopicConfig.getPerm(), remoteAddress);
}
} else {
log.warn("Create new topic failed, because the default topic[{}] not exist. producer:[{}]",
defaultTopic, remoteAddress);
}
if (topicConfig != null) {
log.info("Create new topic by default topic:[{}] config:[{}] producer:[{}]",
defaultTopic, topicConfig, remoteAddress);
this.topicConfigTable.put(topic, topicConfig);
long stateMachineVersion = brokerController.getMessageStore() != null ? brokerController.getMessageStore().getStateMachineVersion() : 0;
dataVersion.nextVersion(stateMachineVersion);
createNew = true;
this.persist();
}
} finally {
this.topicConfigTableLock.unlock();
}
}
} catch (InterruptedException e) {
log.error("createTopicInSendMessageMethod exception", e);
}
if (createNew) {
this.brokerController.registerBrokerAll(false, true, true);
}
return topicConfig;
}
public TopicConfig createTopicIfAbsent(TopicConfig topicConfig) {
return createTopicIfAbsent(topicConfig, true);
}
public TopicConfig createTopicIfAbsent(TopicConfig topicConfig, boolean register) {
boolean createNew = false;
if (topicConfig == null) {
throw new NullPointerException("TopicConfig");
}
if (StringUtils.isEmpty(topicConfig.getTopicName())) {
throw new IllegalArgumentException("TopicName");
}
try {
if (this.topicConfigTableLock.tryLock(LOCK_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS)) {
try {
TopicConfig existedTopicConfig = this.topicConfigTable.get(topicConfig.getTopicName());
if (existedTopicConfig != null) {
return existedTopicConfig;
}
log.info("Create new topic [{}] config:[{}]", topicConfig.getTopicName(), topicConfig);
this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
long stateMachineVersion = brokerController.getMessageStore() != null ? brokerController.getMessageStore().getStateMachineVersion() : 0;
dataVersion.nextVersion(stateMachineVersion);
createNew = true;
this.persist();
} finally {
this.topicConfigTableLock.unlock();
}
}
} catch (InterruptedException e) {
log.error("createTopicIfAbsent ", e);
}
if (createNew && register) {
this.brokerController.registerIncrementBrokerData(topicConfig, dataVersion);
}
return this.topicConfigTable.get(topicConfig.getTopicName());
}
public TopicConfig createTopicInSendMessageBackMethod(
final String topic,
final int clientDefaultTopicQueueNums,
final int perm,
final int topicSysFlag) {
return createTopicInSendMessageBackMethod(topic, clientDefaultTopicQueueNums, perm, false, topicSysFlag);
}
public TopicConfig createTopicInSendMessageBackMethod(
final String topic,
final int clientDefaultTopicQueueNums,
final int perm,
final boolean isOrder,
final int topicSysFlag) {
TopicConfig topicConfig = this.topicConfigTable.get(topic);
if (topicConfig != null) {
if (isOrder != topicConfig.isOrder()) {
topicConfig.setOrder(isOrder);
this.updateTopicConfig(topicConfig);
}
return topicConfig;
}
boolean createNew = false;
try {
if (this.topicConfigTableLock.tryLock(LOCK_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS)) {
try {
topicConfig = this.topicConfigTable.get(topic);
if (topicConfig != null) {
return topicConfig;
}
topicConfig = new TopicConfig(topic);
topicConfig.setReadQueueNums(clientDefaultTopicQueueNums);
topicConfig.setWriteQueueNums(clientDefaultTopicQueueNums);
topicConfig.setPerm(perm);
topicConfig.setTopicSysFlag(topicSysFlag);
topicConfig.setOrder(isOrder);
log.info("create new topic {}", topicConfig);
this.topicConfigTable.put(topic, topicConfig);
createNew = true;
long stateMachineVersion = brokerController.getMessageStore() != null ? brokerController.getMessageStore().getStateMachineVersion() : 0;
dataVersion.nextVersion(stateMachineVersion);
this.persist();
} finally {
this.topicConfigTableLock.unlock();
}
}
} catch (InterruptedException e) {
log.error("createTopicInSendMessageBackMethod exception", e);
}
if (createNew) {
this.brokerController.registerBrokerAll(false, true, true);
}
return topicConfig;
}
public TopicConfig createTopicOfTranCheckMaxTime(final int clientDefaultTopicQueueNums, final int perm) {
TopicConfig topicConfig = this.topicConfigTable.get(TopicValidator.RMQ_SYS_TRANS_CHECK_MAX_TIME_TOPIC);
if (topicConfig != null)
return topicConfig;
boolean createNew = false;
try {
if (this.topicConfigTableLock.tryLock(LOCK_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS)) {
try {
topicConfig = this.topicConfigTable.get(TopicValidator.RMQ_SYS_TRANS_CHECK_MAX_TIME_TOPIC);
if (topicConfig != null)
return topicConfig;
topicConfig = new TopicConfig(TopicValidator.RMQ_SYS_TRANS_CHECK_MAX_TIME_TOPIC);
topicConfig.setReadQueueNums(clientDefaultTopicQueueNums);
topicConfig.setWriteQueueNums(clientDefaultTopicQueueNums);
topicConfig.setPerm(perm);
topicConfig.setTopicSysFlag(0);
log.info("create new topic {}", topicConfig);
this.topicConfigTable.put(TopicValidator.RMQ_SYS_TRANS_CHECK_MAX_TIME_TOPIC, topicConfig);
createNew = true;
long stateMachineVersion = brokerController.getMessageStore() != null ? brokerController.getMessageStore().getStateMachineVersion() : 0;
dataVersion.nextVersion(stateMachineVersion);
this.persist();
} finally {
this.topicConfigTableLock.unlock();
}
}
} catch (InterruptedException e) {
log.error("create TRANS_CHECK_MAX_TIME_TOPIC exception", e);
}
if (createNew) {
this.brokerController.registerBrokerAll(false, true, true);
}
return topicConfig;
}
public void updateTopicUnitFlag(final String topic, final boolean unit) {
TopicConfig topicConfig = this.topicConfigTable.get(topic);
if (topicConfig != null) {
int oldTopicSysFlag = topicConfig.getTopicSysFlag();
if (unit) {
topicConfig.setTopicSysFlag(TopicSysFlag.setUnitFlag(oldTopicSysFlag));
} else {
topicConfig.setTopicSysFlag(TopicSysFlag.clearUnitFlag(oldTopicSysFlag));
}
log.info("update topic sys flag. oldTopicSysFlag={}, newTopicSysFlag={}", oldTopicSysFlag,
topicConfig.getTopicSysFlag());
this.topicConfigTable.put(topic, topicConfig);
long stateMachineVersion = brokerController.getMessageStore() != null ? brokerController.getMessageStore().getStateMachineVersion() : 0;
dataVersion.nextVersion(stateMachineVersion);
this.persist();
this.brokerController.registerBrokerAll(false, true, true);
}
}
public void updateTopicUnitSubFlag(final String topic, final boolean hasUnitSub) {
TopicConfig topicConfig = this.topicConfigTable.get(topic);
if (topicConfig != null) {
int oldTopicSysFlag = topicConfig.getTopicSysFlag();
if (hasUnitSub) {
topicConfig.setTopicSysFlag(TopicSysFlag.setUnitSubFlag(oldTopicSysFlag));
} else {
topicConfig.setTopicSysFlag(TopicSysFlag.clearUnitSubFlag(oldTopicSysFlag));
}
log.info("update topic sys flag. oldTopicSysFlag={}, newTopicSysFlag={}", oldTopicSysFlag,
topicConfig.getTopicSysFlag());
this.topicConfigTable.put(topic, topicConfig);
long stateMachineVersion = brokerController.getMessageStore() != null ? brokerController.getMessageStore().getStateMachineVersion() : 0;
dataVersion.nextVersion(stateMachineVersion);
this.persist();
this.brokerController.registerBrokerAll(false, true, true);
}
}
public void updateTopicConfig(final TopicConfig topicConfig) {
checkNotNull(topicConfig, "topicConfig shouldn't be null");
Map newAttributes = request(topicConfig);
Map currentAttributes = current(topicConfig.getTopicName());
Map finalAttributes = AttributeUtil.alterCurrentAttributes(
this.topicConfigTable.get(topicConfig.getTopicName()) == null,
TopicAttributes.ALL,
ImmutableMap.copyOf(currentAttributes),
ImmutableMap.copyOf(newAttributes));
topicConfig.setAttributes(finalAttributes);
TopicConfig old = this.topicConfigTable.put(topicConfig.getTopicName(), topicConfig);
if (old != null) {
log.info("update topic config, old:[{}] new:[{}]", old, topicConfig);
} else {
log.info("create new topic [{}]", topicConfig);
}
long stateMachineVersion = brokerController.getMessageStore() != null ? brokerController.getMessageStore().getStateMachineVersion() : 0;
dataVersion.nextVersion(stateMachineVersion);
this.persist(topicConfig.getTopicName(), topicConfig);
}
public void updateOrderTopicConfig(final KVTable orderKVTableFromNs) {
if (orderKVTableFromNs != null && orderKVTableFromNs.getTable() != null) {
boolean isChange = false;
Set orderTopics = orderKVTableFromNs.getTable().keySet();
for (String topic : orderTopics) {
TopicConfig topicConfig = this.topicConfigTable.get(topic);
if (topicConfig != null && !topicConfig.isOrder()) {
topicConfig.setOrder(true);
isChange = true;
log.info("update order topic config, topic={}, order={}", topic, true);
}
}
// We don't have a mandatory rule to maintain the validity of order conf in NameServer,
// so we may overwrite the order field mistakenly.
// To avoid the above case, we comment the below codes, please use mqadmin API to update
// the order filed.
/*for (Map.Entry entry : this.topicConfigTable.entrySet()) {
String topic = entry.getKey();
if (!orderTopics.contains(topic)) {
TopicConfig topicConfig = entry.getValue();
if (topicConfig.isOrder()) {
topicConfig.setOrder(false);
isChange = true;
log.info("update order topic config, topic={}, order={}", topic, false);
}
}
}*/
if (isChange) {
long stateMachineVersion = brokerController.getMessageStore() != null ? brokerController.getMessageStore().getStateMachineVersion() : 0;
dataVersion.nextVersion(stateMachineVersion);
this.persist();
}
}
}
// make it testable
public Map allAttributes() {
return TopicAttributes.ALL;
}
public boolean isOrderTopic(final String topic) {
TopicConfig topicConfig = this.topicConfigTable.get(topic);
if (topicConfig == null) {
return false;
} else {
return topicConfig.isOrder();
}
}
public void deleteTopicConfig(final String topic) {
TopicConfig old = this.topicConfigTable.remove(topic);
if (old != null) {
log.info("delete topic config OK, topic: {}", old);
long stateMachineVersion = brokerController.getMessageStore() != null ? brokerController.getMessageStore().getStateMachineVersion() : 0;
dataVersion.nextVersion(stateMachineVersion);
this.persist();
} else {
log.warn("delete topic config failed, topic: {} not exists", topic);
}
}
public TopicConfigSerializeWrapper buildTopicConfigSerializeWrapper() {
TopicConfigSerializeWrapper topicConfigSerializeWrapper = new TopicConfigSerializeWrapper();
topicConfigSerializeWrapper.setTopicConfigTable(this.topicConfigTable);
DataVersion dataVersionCopy = new DataVersion();
dataVersionCopy.assignNewOne(this.dataVersion);
topicConfigSerializeWrapper.setDataVersion(dataVersionCopy);
return topicConfigSerializeWrapper;
}
@Override
public String encode() {
return encode(false);
}
@Override
public String configFilePath() {
return BrokerPathConfigHelper.getTopicConfigPath(this.brokerController.getMessageStoreConfig().getStorePathRootDir());
}
@Override
public void decode(String jsonString) {
if (jsonString != null) {
TopicConfigSerializeWrapper topicConfigSerializeWrapper =
TopicConfigSerializeWrapper.fromJson(jsonString, TopicConfigSerializeWrapper.class);
if (topicConfigSerializeWrapper != null) {
this.topicConfigTable.putAll(topicConfigSerializeWrapper.getTopicConfigTable());
this.dataVersion.assignNewOne(topicConfigSerializeWrapper.getDataVersion());
this.printLoadDataWhenFirstBoot(topicConfigSerializeWrapper);
}
}
}
public String encode(final boolean prettyFormat) {
TopicConfigSerializeWrapper topicConfigSerializeWrapper = new TopicConfigSerializeWrapper();
topicConfigSerializeWrapper.setTopicConfigTable(this.topicConfigTable);
topicConfigSerializeWrapper.setDataVersion(this.dataVersion);
return topicConfigSerializeWrapper.toJson(prettyFormat);
}
private void printLoadDataWhenFirstBoot(final TopicConfigSerializeWrapper tcs) {
Iterator> it = tcs.getTopicConfigTable().entrySet().iterator();
while (it.hasNext()) {
Entry next = it.next();
log.info("load exist local topic, {}", next.getValue().toString());
}
}
public DataVersion getDataVersion() {
return dataVersion;
}
public void setTopicConfigTable(
ConcurrentMap topicConfigTable) {
this.topicConfigTable = topicConfigTable;
}
public ConcurrentMap getTopicConfigTable() {
return topicConfigTable;
}
private Map request(TopicConfig topicConfig) {
return topicConfig.getAttributes() == null ? new HashMap<>() : topicConfig.getAttributes();
}
private Map current(String topic) {
TopicConfig topicConfig = this.topicConfigTable.get(topic);
if (topicConfig == null) {
return new HashMap<>();
} else {
Map attributes = topicConfig.getAttributes();
if (attributes == null) {
return new HashMap<>();
} else {
return attributes;
}
}
}
public boolean containsTopic(String topic) {
return topicConfigTable.containsKey(topic);
}
}
