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org.apache.activemq.artemis.core.server.federation.FederatedQueueConsumerImpl 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.activemq.artemis.core.server.federation;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.activemq.artemis.api.core.ActiveMQException;
import org.apache.activemq.artemis.api.core.ActiveMQNonExistentQueueException;
import org.apache.activemq.artemis.api.core.Message;
import org.apache.activemq.artemis.api.core.client.ClientConsumer;
import org.apache.activemq.artemis.api.core.client.ClientMessage;
import org.apache.activemq.artemis.api.core.client.ClientSession;
import org.apache.activemq.artemis.api.core.client.SessionFailureListener;
import org.apache.activemq.artemis.core.client.impl.ClientSessionFactoryInternal;
import org.apache.activemq.artemis.core.server.ActiveMQServer;
import org.apache.activemq.artemis.core.server.ActiveMQServerLogger;
import org.apache.activemq.artemis.core.server.transformer.Transformer;
import org.jboss.logging.Logger;
public class FederatedQueueConsumerImpl implements FederatedQueueConsumer, SessionFailureListener {
private static final Logger logger = Logger.getLogger(FederatedQueueConsumerImpl.class);
private final ActiveMQServer server;
private final Federation federation;
private final FederatedConsumerKey key;
private final Transformer transformer;
private final FederationUpstream upstream;
private final AtomicInteger count = new AtomicInteger();
private final ScheduledExecutorService scheduledExecutorService;
private final int intialConnectDelayMultiplier = 2;
private final int intialConnectDelayMax = 30;
private final ClientSessionCallback clientSessionCallback;
private ClientSessionFactoryInternal clientSessionFactory;
private ClientSession clientSession;
private ClientConsumer clientConsumer;
public FederatedQueueConsumerImpl(Federation federation, ActiveMQServer server, Transformer transformer, FederatedConsumerKey key, FederationUpstream upstream, ClientSessionCallback clientSessionCallback) {
this.federation = federation;
this.server = server;
this.key = key;
this.transformer = transformer;
this.upstream = upstream;
this.scheduledExecutorService = server.getScheduledPool();
this.clientSessionCallback = clientSessionCallback;
}
@Override
public FederationUpstream getFederationUpstream() {
return upstream;
}
@Override
public Federation getFederation() {
return federation;
}
@Override
public FederatedConsumerKey getKey() {
return key;
}
@Override
public ClientSession getClientSession() {
return clientSession;
}
@Override
public int incrementCount() {
return count.incrementAndGet();
}
@Override
public int decrementCount() {
return count.decrementAndGet();
}
@Override
public void start() {
scheduleConnect(0);
}
private void scheduleConnect(int delay) {
scheduledExecutorService.schedule(() -> {
try {
connect();
} catch (Exception e) {
scheduleConnect(FederatedQueueConsumer.getNextDelay(delay, intialConnectDelayMultiplier, intialConnectDelayMax));
}
}, delay, TimeUnit.SECONDS);
}
private void connect() throws Exception {
try {
if (clientConsumer == null) {
synchronized (this) {
this.clientSessionFactory = (ClientSessionFactoryInternal) upstream.getConnection().clientSessionFactory();
this.clientSession = clientSessionFactory.createSession(upstream.getUser(), upstream.getPassword(), false, true, true, clientSessionFactory.getServerLocator().isPreAcknowledge(), clientSessionFactory.getServerLocator().getAckBatchSize());
this.clientSession.addFailureListener(this);
this.clientSession.addMetaData(FEDERATION_NAME, federation.getName().toString());
this.clientSession.addMetaData(FEDERATION_UPSTREAM_NAME, upstream.getName().toString());
this.clientSession.start();
if (clientSessionCallback != null) {
clientSessionCallback.callback(clientSession);
}
if (clientSession.queueQuery(key.getQueueName()).isExists()) {
this.clientConsumer = clientSession.createConsumer(key.getQueueName(), key.getFilterString(), key.getPriority(), false);
this.clientConsumer.setMessageHandler(this);
} else {
throw new ActiveMQNonExistentQueueException("Queue " + key.getQueueName() + " does not exist on remote");
}
}
}
} catch (Exception e) {
try {
if (clientSessionFactory != null) {
clientSessionFactory.cleanup();
}
disconnect();
} catch (ActiveMQException ignored) {
}
throw e;
}
}
@Override
public void close() {
scheduleDisconnect(0);
}
private void scheduleDisconnect(int delay) {
scheduledExecutorService.schedule(() -> {
try {
disconnect();
} catch (Exception ignored) {
}
}, delay, TimeUnit.SECONDS);
}
private void disconnect() throws ActiveMQException {
if (clientConsumer != null) {
clientConsumer.close();
}
if (clientSession != null) {
clientSession.close();
}
clientConsumer = null;
clientSession = null;
if (clientSessionFactory != null && (!upstream.getConnection().isSharedConnection() ||
clientSessionFactory.numSessions() == 0)) {
clientSessionFactory.close();
clientSessionFactory = null;
}
}
@Override
public void onMessage(ClientMessage clientMessage) {
try {
if (server.hasBrokerFederationPlugins()) {
try {
server.callBrokerFederationPlugins(plugin -> plugin.beforeFederatedQueueConsumerMessageHandled(this, clientMessage));
} catch (ActiveMQException t) {
ActiveMQServerLogger.LOGGER.federationPluginExecutionError(t, "beforeFederatedQueueConsumerMessageHandled");
throw new IllegalStateException(t.getMessage(), t.getCause());
}
}
Message message = transformer == null ? clientMessage : transformer.transform(clientMessage);
if (message != null) {
server.getPostOffice().route(message, true);
}
clientMessage.acknowledge();
if (server.hasBrokerFederationPlugins()) {
try {
server.callBrokerFederationPlugins(plugin -> plugin.afterFederatedQueueConsumerMessageHandled(this, clientMessage));
} catch (ActiveMQException t) {
ActiveMQServerLogger.LOGGER.federationPluginExecutionError(t, "afterFederatedQueueConsumerMessageHandled");
throw new IllegalStateException(t.getMessage(), t.getCause());
}
}
} catch (Exception e) {
try {
clientSession.rollback();
} catch (ActiveMQException e1) {
}
}
}
@Override
public void connectionFailed(ActiveMQException exception, boolean failedOver) {
connectionFailed(exception, failedOver, null);
}
@Override
public void connectionFailed(ActiveMQException exception, boolean failedOver, String scaleDownTargetNodeID) {
try {
clientSessionFactory.cleanup();
clientSessionFactory.close();
clientConsumer = null;
clientSession = null;
clientSessionFactory = null;
} catch (Throwable dontCare) {
}
start();
}
@Override
public void beforeReconnect(ActiveMQException exception) {
}
public interface ClientSessionCallback {
void callback(ClientSession clientSession) throws ActiveMQException;
}
}