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The core JMS Client implementation
/*
* 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.qpid.jms;
import java.net.URI;
import java.net.URISyntaxException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Map;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.ExceptionListener;
import javax.jms.JMSException;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import org.apache.qpid.jms.exceptions.JmsExceptionSupport;
import org.apache.qpid.jms.jndi.JNDIStorable;
import org.apache.qpid.jms.message.JmsMessageIDBuilder;
import org.apache.qpid.jms.meta.JmsConnectionInfo;
import org.apache.qpid.jms.provider.Provider;
import org.apache.qpid.jms.provider.ProviderFactory;
import org.apache.qpid.jms.util.IdGenerator;
import org.apache.qpid.jms.util.PropertyUtil;
import org.apache.qpid.jms.util.URISupport;
import org.apache.qpid.jms.util.URISupport.CompositeData;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* JMS ConnectionFactory Implementation.
*/
public class JmsConnectionFactory extends JNDIStorable implements ConnectionFactory, QueueConnectionFactory, TopicConnectionFactory {
private static final Logger LOG = LoggerFactory.getLogger(JmsConnectionFactory.class);
private static final String CLIENT_ID_PROP = "clientID";
private static final String DEFAULT_REMOTE_HOST = "localhost";
private static final String DEFAULT_REMOTE_PORT = "5672";
public static final String REMOTE_URI_PROP = "remoteURI";
private static String DEFAULT_REMOTE_URI;
private URI remoteURI;
private String username;
private String password;
private String clientID;
private boolean forceAsyncSend;
private boolean forceSyncSend;
private boolean forceAsyncAcks;
private boolean localMessagePriority;
private boolean localMessageExpiry = true;
private boolean receiveLocalOnly;
private boolean receiveNoWaitLocalOnly;
private boolean populateJMSXUserID;
private String queuePrefix = null;
private String topicPrefix = null;
private boolean validatePropertyNames = true;
private long sendTimeout = JmsConnectionInfo.DEFAULT_SEND_TIMEOUT;
private long requestTimeout = JmsConnectionInfo.DEFAULT_REQUEST_TIMEOUT;
private long closeTimeout = JmsConnectionInfo.DEFAULT_CLOSE_TIMEOUT;
private long connectTimeout = JmsConnectionInfo.DEFAULT_CONNECT_TIMEOUT;
private IdGenerator clientIdGenerator;
private String clientIDPrefix;
private IdGenerator connectionIdGenerator;
private String connectionIDPrefix;
private ExceptionListener exceptionListener;
private JmsPrefetchPolicy prefetchPolicy = new JmsPrefetchPolicy();
private JmsRedeliveryPolicy redeliveryPolicy = new JmsRedeliveryPolicy();
private JmsMessageIDBuilder messageIDBuilder = JmsMessageIDBuilder.BUILTIN.DEFAULT.createBuilder();
public JmsConnectionFactory() {
}
public JmsConnectionFactory(String username, String password) {
setUsername(username);
setPassword(password);
}
public JmsConnectionFactory(String remoteURI) {
this(createURI(remoteURI));
}
public JmsConnectionFactory(URI remoteURI) {
setRemoteURI(remoteURI.toString());
}
public JmsConnectionFactory(String userName, String password, URI remoteURI) {
setUsername(userName);
setPassword(password);
setRemoteURI(remoteURI.toString());
}
public JmsConnectionFactory(String userName, String password, String remoteURI) {
setUsername(userName);
setPassword(password);
setRemoteURI(remoteURI);
}
@Override
protected Map buildFromProperties(Map props) {
// Apply the remoteURI in a consistent order before
// any other properties, since as it may contain
// some options within it.
String remoteURI = props.remove(REMOTE_URI_PROP);
if (remoteURI != null) {
setRemoteURI(remoteURI);
}
return PropertyUtil.setProperties(this, props);
}
@Override
protected void populateProperties(Map props) {
try {
Map result = PropertyUtil.getProperties(this);
props.putAll(result);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public TopicConnection createTopicConnection() throws JMSException {
return createTopicConnection(getUsername(), getPassword());
}
@Override
public TopicConnection createTopicConnection(String username, String password) throws JMSException {
try {
String connectionId = getConnectionIdGenerator().generateId();
Provider provider = createProvider(remoteURI);
JmsTopicConnection result = new JmsTopicConnection(connectionId, provider, getClientIdGenerator());
return configureConnection(result, username, password);
} catch (Exception e) {
throw JmsExceptionSupport.create(e);
}
}
@Override
public Connection createConnection() throws JMSException {
return createConnection(getUsername(), getPassword());
}
@Override
public Connection createConnection(String username, String password) throws JMSException {
try {
String connectionId = getConnectionIdGenerator().generateId();
Provider provider = createProvider(remoteURI);
JmsConnection result = new JmsConnection(connectionId, provider, getClientIdGenerator());
return configureConnection(result, username, password);
} catch (Exception e) {
throw JmsExceptionSupport.create("Failed to create connection to: " + getRemoteURI(), e);
}
}
@Override
public QueueConnection createQueueConnection() throws JMSException {
return createQueueConnection(getUsername(), getPassword());
}
@Override
public QueueConnection createQueueConnection(String username, String password) throws JMSException {
try {
String connectionId = getConnectionIdGenerator().generateId();
Provider provider = createProvider(remoteURI);
JmsQueueConnection result = new JmsQueueConnection(connectionId, provider, getClientIdGenerator());
return configureConnection(result, username, password);
} catch (Exception e) {
throw JmsExceptionSupport.create(e);
}
}
protected T configureConnection(T connection, String username, String password) throws JMSException {
try {
Map properties = PropertyUtil.getProperties(this);
// We must ensure that we apply the clientID last, since setting it on
// the Connection object provokes establishing the underlying connection.
boolean setClientID = false;
if (properties.containsKey(CLIENT_ID_PROP)) {
setClientID = true;
properties.remove(CLIENT_ID_PROP);
}
PropertyUtil.setProperties(connection, properties);
connection.setExceptionListener(exceptionListener);
connection.setMessageIDBuilder(messageIDBuilder);
connection.setUsername(username);
connection.setPassword(password);
connection.setConfiguredURI(remoteURI);
if (setClientID) {
connection.setClientID(clientID);
}
return connection;
} catch (Exception e) {
throw JmsExceptionSupport.create(e);
}
}
protected Provider createProvider(URI remoteURI) throws Exception {
if (remoteURI == null) {
remoteURI = new URI(getDefaultRemoteAddress());
}
Provider result = null;
try {
result = ProviderFactory.create(remoteURI);
result.connect();
} catch (Exception ex) {
LOG.error("Failed to create JMS Provider instance for: {}", remoteURI.getScheme());
LOG.trace("Error: ", ex);
throw ex;
}
return result;
}
protected static URI createURI(String name) {
if (name != null && name.trim().isEmpty() == false) {
try {
return new URI(name);
} catch (URISyntaxException e) {
throw (IllegalArgumentException) new IllegalArgumentException("Invalid remote URI: " + name).initCause(e);
}
}
return null;
}
protected synchronized IdGenerator getConnectionIdGenerator() {
if (connectionIdGenerator == null) {
if (connectionIDPrefix != null) {
connectionIdGenerator = new IdGenerator(connectionIDPrefix);
} else {
connectionIdGenerator = new IdGenerator();
}
}
return connectionIdGenerator;
}
protected synchronized void setConnectionIdGenerator(IdGenerator connectionIdGenerator) {
this.connectionIdGenerator = connectionIdGenerator;
}
//////////////////////////////////////////////////////////////////////////
// Property getters and setters
//////////////////////////////////////////////////////////////////////////
/**
* @return the remoteURI
*/
public String getRemoteURI() {
return this.remoteURI != null ? this.remoteURI.toString() : getDefaultRemoteAddress();
}
/**
* @param remoteURI
* the remoteURI to set
*/
public void setRemoteURI(String remoteURI) {
if (remoteURI == null) {
throw new IllegalArgumentException("remoteURI cannot be null");
}
this.remoteURI = createURI(remoteURI);
if (this.remoteURI.getRawUserInfo() != null) {
throw new IllegalArgumentException("The supplied URI cannot contain a User-Info section");
}
try {
if (this.remoteURI.getQuery() != null) {
Map map = PropertyUtil.parseQuery(this.remoteURI.getQuery());
Map jmsOptionsMap = PropertyUtil.filterProperties(map, "jms.");
Map unused = PropertyUtil.setProperties(this, jmsOptionsMap);
if (!unused.isEmpty()) {
String msg = ""
+ " Not all jms options could be set on the ConnectionFactory."
+ " Check the options are spelled correctly."
+ " Unused parameters=[" + unused + "]."
+ " This connection factory cannot be started.";
throw new IllegalArgumentException(msg);
} else {
this.remoteURI = PropertyUtil.replaceQuery(this.remoteURI, map);
}
} else if (URISupport.isCompositeURI(this.remoteURI)) {
CompositeData data = URISupport.parseComposite(this.remoteURI);
Map jmsOptionsMap = PropertyUtil.filterProperties(data.getParameters(), "jms.");
Map unused = PropertyUtil.setProperties(this, jmsOptionsMap);
if (!unused.isEmpty()) {
String msg = ""
+ " Not all jms options could be set on the ConnectionFactory."
+ " Check the options are spelled correctly."
+ " Unused parameters=[" + unused + "]."
+ " This connection factory cannot be started.";
throw new IllegalArgumentException(msg);
} else {
this.remoteURI = data.toURI();
}
}
} catch (Exception e) {
throw new IllegalArgumentException(e.getMessage());
}
}
/**
* @return the user name used for connection authentication.
*/
public String getUsername() {
return this.username;
}
/**
* @param username
* the user name to set
*/
public void setUsername(String username) {
this.username = username;
}
/**
* @return the password set for connection authentication.
*/
public String getPassword() {
return this.password;
}
/**
* @param password
* the password to set
*/
public void setPassword(String password) {
this.password = password;
}
/**
* Returns true if the client should always send messages using a synchronous
* send operation regardless of persistence mode, or inside a transaction.
*
* @return true if sends should always be done synchronously.
*/
public boolean isForceSyncSend() {
return forceSyncSend;
}
/**
* Configures whether or not the client will always send messages synchronously or not
* regardless of other factors that might result in an asynchronous send.
*
* @param forceSyncSend
* if true sends are always done synchronously.
*/
public void setForceSyncSend(boolean forceSyncSend) {
this.forceSyncSend = forceSyncSend;
}
public boolean isForceAsyncSend() {
return forceAsyncSend;
}
public void setForceAsyncSend(boolean forceAsyncSend) {
this.forceAsyncSend = forceAsyncSend;
}
/**
* @return the localMessagePriority configuration option.
*/
public boolean isLocalMessagePriority() {
return this.localMessagePriority;
}
/**
* Enables client-side message priority support in MessageConsumer instances.
* This results in all prefetched messages being dispatched in priority order.
*
* @param localMessagePriority the messagePrioritySupported to set
*/
public void setLocalMessagePriority(boolean localMessagePriority) {
this.localMessagePriority = localMessagePriority;
}
/**
* Returns the prefix applied to Queues that are created by the client.
*
* @return the currently configured Queue prefix.
*/
public String getQueuePrefix() {
return queuePrefix;
}
public void setQueuePrefix(String queuePrefix) {
this.queuePrefix = queuePrefix;
}
/**
* Returns the prefix applied to Topics that are created by the client.
*
* @return the currently configured Topic prefix.
*/
public String getTopicPrefix() {
return topicPrefix;
}
public void setTopicPrefix(String topicPrefix) {
this.topicPrefix = topicPrefix;
}
public boolean isValidatePropertyNames() {
return validatePropertyNames;
}
public void setValidatePropertyNames(boolean validatePropertyNames) {
this.validatePropertyNames = validatePropertyNames;
}
/**
* Gets the currently set close timeout.
*
* @return the currently set close timeout.
*/
public long getCloseTimeout() {
return closeTimeout;
}
/**
* Sets the close timeout used to control how long a Connection close will wait for
* clean shutdown of the connection before giving up. A negative value means wait
* forever.
*
* Care should be taken in that a very short close timeout can cause the client to
* not cleanly shutdown the connection and it's resources.
*
* @param closeTimeout
* time in milliseconds to wait for a clean connection close.
*/
public void setCloseTimeout(long closeTimeout) {
this.closeTimeout = closeTimeout;
}
/**
* Returns the currently configured wire level connect timeout.
*
* @return the currently configured wire level connect timeout.
*/
public long getConnectTimeout() {
return this.connectTimeout;
}
/**
* Sets the timeout value used to control how long a client will wait for a successful
* connection to the remote peer to be established before considering the attempt to
* have failed. This value does not control socket level connection timeout but rather
* connection handshake at the wire level, to control the socket level timeouts use the
* standard socket options configuration values.
*
* @param connectTimeout
* the time in milliseconds to wait for the protocol connection handshake to complete.
*/
public void setConnectTimeout(long connectTimeout) {
this.connectTimeout = connectTimeout;
}
public long getSendTimeout() {
return sendTimeout;
}
public void setSendTimeout(long sendTimeout) {
this.sendTimeout = sendTimeout;
}
public long getRequestTimeout() {
return requestTimeout;
}
public void setRequestTimeout(long requestTimeout) {
this.requestTimeout = requestTimeout;
}
public JmsPrefetchPolicy getPrefetchPolicy() {
return prefetchPolicy;
}
public void setPrefetchPolicy(JmsPrefetchPolicy prefetchPolicy) {
this.prefetchPolicy = prefetchPolicy;
}
/**
* Returns the JmsRedeliveryPolicy that is applied when a new connection is created.
*
* @return the redeliveryPolicy that is currently configured for this factory.
*/
public JmsRedeliveryPolicy getRedeliveryPolicy() {
return redeliveryPolicy;
}
/**
* Sets the JmsRedeliveryPolicy that is applied when a new connection is created.
*
* @param redeliveryPolicy
* The new redeliveryPolicy to set
*/
public void setRedeliveryPolicy(JmsRedeliveryPolicy redeliveryPolicy) {
this.redeliveryPolicy = redeliveryPolicy;
}
/**
* @return the currently configured client ID prefix for auto-generated client IDs.
*/
public synchronized String getClientIDPrefix() {
return clientIDPrefix;
}
/**
* Sets the prefix used by auto-generated JMS Client ID values which are used if the JMS
* client does not explicitly specify one.
*
* @param clientIDPrefix
* the value to use as a prefix on auto-generated client IDs.
*/
public synchronized void setClientIDPrefix(String clientIDPrefix) {
this.clientIDPrefix = clientIDPrefix;
}
protected synchronized IdGenerator getClientIdGenerator() {
if (clientIdGenerator == null) {
if (clientIDPrefix != null) {
clientIdGenerator = new IdGenerator(clientIDPrefix);
} else {
clientIdGenerator = new IdGenerator();
}
}
return clientIdGenerator;
}
protected synchronized void setClientIdGenerator(IdGenerator clientIdGenerator) {
this.clientIdGenerator = clientIdGenerator;
}
public String getClientID() {
return clientID;
}
/**
* Sets the JMS clientID to use for connections created by this factory.
*
* NOTE: A clientID can only be used by one Connection at a time, so setting it here
* will restrict the ConnectionFactory to creating a single open Connection at a time.
* It is possible to set the clientID on the Connection itself immediately after
* creation if no value has been set via the factory that created it, which will
* allow the factory to create multiple open connections at a time.
*
* @param clientID
* The clientID to assign when creating a new connection.
*/
public void setClientID(String clientID) {
this.clientID = clientID;
}
/**
* Sets the prefix used by connection id generator.
*
* @param connectionIDPrefix
* The string prefix used on all connection Id's created by this factory.
*/
public synchronized void setConnectionIDPrefix(String connectionIDPrefix) {
this.connectionIDPrefix = connectionIDPrefix;
}
/**
* Gets the currently configured JMS ExceptionListener that will be set on all
* new Connection objects created from this factory.
*
* NOTE: the listener object is not saved when serializing the factory.
*
* @return the currently configured JMS ExceptionListener.
*/
public ExceptionListener getExceptionListener() {
return exceptionListener;
}
/**
* Sets the JMS ExceptionListener that will be set on all new Connection objects
* created from this factory.
*
* @param exceptionListener
* the JMS ExceptionListener to apply to new Connection's or null to clear.
*/
public void setExceptionListener(ExceptionListener exceptionListener) {
this.exceptionListener = exceptionListener;
}
/**
* Returns true if the client should always send messages using a synchronous
* send operation regardless of persistence mode, or inside a transaction.
*
* @return true if sends should always be done synchronously.
*
* @deprecated As of release 0.7.0, replaced by {@link #isForceSyncSend()}
*/
@Deprecated
public boolean isAlwaysSyncSend() {
return forceSyncSend;
}
/**
* Configures whether or not the client will always send messages synchronously or not
* regardless of other factors that might result in an asynchronous send.
*
* @param alwaysSyncSend
* if true sends are always done synchronously.
*
* @deprecated As of release 0.7.0, replaced by {@link #setForceSyncSend(boolean)}
*/
@Deprecated
public void setAlwaysSyncSend(boolean alwaysSyncSend) {
this.forceSyncSend = alwaysSyncSend;
}
/**
* @return true if consumer acknowledgments are sent asynchronously or not.
*/
public boolean isForceAsyncAcks() {
return forceAsyncAcks;
}
/**
* Should the message acknowledgments from a consumer be sent synchronously or
* asynchronously. Sending the acknowledgments asynchronously can increase the
* performance of a consumer but opens up the possibility of a missed message
* acknowledge should the connection be unstable.
*
* @param forceAsyncAcks
* true to have the client send all message acknowledgments asynchronously.
*/
public void setForceAsyncAcks(boolean forceAsyncAcks) {
this.forceAsyncAcks = forceAsyncAcks;
}
/**
* @return true if consumer acknowledgments are sent asynchronously or not.
*
* @deprecated As of release 0.7.0, replaced by {@link #isForceAsyncAcks()}
*/
@Deprecated
public boolean isSendAcksAsync() {
return forceAsyncAcks;
}
/**
* Should the message acknowledgments from a consumer be sent synchronously or
* asynchronously. Sending the acknowledgments asynchronously can increase the
* performance of a consumer but opens up the possibility of a missed message
* acknowledge should the connection be unstable.
*
* @param sendAcksAsync
* true to have the client send all message acknowledgments asynchronously.
*
* @deprecated As of release 0.7.0, replaced by {@link #setForceAsyncAcks(boolean)}
*/
@Deprecated
public void setSendAcksAsync(boolean sendAcksAsync) {
this.forceAsyncAcks = sendAcksAsync;
}
/**
* @return true if MessageConsumer instance will check for expired messages locally before dispatch.
*/
public boolean isLocalMessageExpiry() {
return localMessageExpiry;
}
/**
* Controls whether message expiration checking is done locally (in addition to any broker
* side checks) in each MessageConsumer prior to dispatching a message. Disabling this check
* can lead to consumption of expired messages.
*
* @param localMessageExpiry
* controls whether expiration checking is done prior to dispatch.
*/
public void setLocalMessageExpiry(boolean localMessageExpiry) {
this.localMessageExpiry = localMessageExpiry;
}
/**
* Sets the type of the Message IDs used to populate the outgoing Messages
*
* @param type
* The name of the Message type to use when sending a message.
*/
public void setMessageIDType(String type) {
this.messageIDBuilder = JmsMessageIDBuilder.BUILTIN.create(type);
}
public String getMessageIDType() {
return this.messageIDBuilder.toString();
}
/**
* @return the messageIDBuilder currently configured.
*/
public JmsMessageIDBuilder getMessageIDBuilder() {
return messageIDBuilder;
}
/**
* Allows the owner of this factory to configure a custom Message ID Builder
* instance that will be used to create the Message ID values set in outgoing
* Messages sent from MessageProducer instances.
*
* @param messageIDBuilder
* The custom JmsMessageIDBuilder to use to create outgoing Message IDs.
*/
public void setMessageIDBuilder(JmsMessageIDBuilder messageIDBuilder) {
if (messageIDBuilder == null) {
messageIDBuilder = JmsMessageIDBuilder.BUILTIN.DEFAULT.createBuilder();
}
this.messageIDBuilder = messageIDBuilder;
}
public boolean isReceiveLocalOnly() {
return receiveLocalOnly;
}
/**
* Controls whether the client only checks its local message buffer when using
* receive calls with a timeout, or will instead drain remaining credit from the
* remote peer to ensure there are really no messages available if the
* timeout expires before a message arrives in the consumers local buffer.
*
* @param receiveLocalOnly
* true if receive calls with a timeout should only check the local message buffer.
*/
public void setReceiveLocalOnly(boolean receiveLocalOnly) {
this.receiveLocalOnly = receiveLocalOnly;
}
public boolean isReceiveNoWaitLocalOnly() {
return receiveNoWaitLocalOnly;
}
/**
* Controls whether the client only checks its local message buffer when using
* receiveNoWait calls, or will instead drain remaining credit from the
* remote peer synchronously to ensure there are really no messages available
* that have yet to arrive in the consumers local buffer.
*
* @param receiveNoWaitLocalOnly
* true if receiveNoWait calls should only check the local message buffer.
*/
public void setReceiveNoWaitLocalOnly(boolean receiveNoWaitLocalOnly) {
this.receiveNoWaitLocalOnly = receiveNoWaitLocalOnly;
}
public boolean isPopulateJMSXUserID() {
return populateJMSXUserID;
}
/**
* Controls whether message sent from the Connection will have the JMSXUserID message
* property populated with the authenticated user ID of the Connection. When false all
* messages sent from the Connection will not carry any value in the JMSXUserID property
* regardless of it being manually set on the Message to prevent a client spoofing the
* JMSXUserID value.
*
* @param populateJMSXUserID
* true if message sent from this connection should have the JMSXUserID value populated.
*/
public void setPopulateJMSXUserID(boolean populateJMSXUserID) {
this.populateJMSXUserID = populateJMSXUserID;
}
//----- Static Methods ---------------------------------------------------//
/**
* @return the default remote address to connect to in the event that none was set.
*/
public static String getDefaultRemoteAddress() {
if (DEFAULT_REMOTE_URI != null) {
return DEFAULT_REMOTE_URI;
}
synchronized (JmsConnectionFactory.class) {
if (DEFAULT_REMOTE_URI != null) {
return DEFAULT_REMOTE_URI;
}
String host = null;
String port = null;
String remoteAddress = null;
try {
host = AccessController.doPrivileged(new PrivilegedAction() {
@Override
public String run() {
String result = System.getProperty("org.apache.qpid.jms.REMOTE_HOST", DEFAULT_REMOTE_HOST);
result = (result == null || result.isEmpty()) ? DEFAULT_REMOTE_HOST : result;
return result;
}
});
port = AccessController.doPrivileged(new PrivilegedAction() {
@Override
public String run() {
String result = System.getProperty("org.apache.qpid.jms.REMOTE_PORT", DEFAULT_REMOTE_PORT);
result = (result == null || result.isEmpty()) ? DEFAULT_REMOTE_PORT : result;
return result;
}
});
} catch (Throwable e) {
LOG.debug("Failed to look up System properties for remote host and port", e);
}
host = (host == null || host.isEmpty()) ? DEFAULT_REMOTE_HOST : host;
port = (port == null || port.isEmpty()) ? DEFAULT_REMOTE_PORT : port;
final String defaultURL = "amqp://" + host + ":" + port;
try {
remoteAddress = AccessController.doPrivileged(new PrivilegedAction() {
@Override
public String run() {
String result = System.getProperty("org.apache.qpid.jms.REMOTE_URI", defaultURL);
result = (result == null || result.isEmpty()) ? defaultURL : result;
return result;
}
});
} catch (Throwable e) {
LOG.debug("Failed to look up System property for remote URI", e);
}
DEFAULT_REMOTE_URI = (remoteAddress == null || remoteAddress.isEmpty()) ? defaultURL : remoteAddress;
}
return DEFAULT_REMOTE_URI;
}
}
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