/**
* 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.camel.component.smpp;
import java.io.IOException;
import java.util.concurrent.locks.ReentrantLock;
import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.impl.DefaultProducer;
import org.jsmpp.DefaultPDUReader;
import org.jsmpp.DefaultPDUSender;
import org.jsmpp.SynchronizedPDUSender;
import org.jsmpp.bean.BindType;
import org.jsmpp.bean.NumberingPlanIndicator;
import org.jsmpp.bean.TypeOfNumber;
import org.jsmpp.extra.SessionState;
import org.jsmpp.session.BindParameter;
import org.jsmpp.session.SMPPSession;
import org.jsmpp.session.SessionStateListener;
import org.jsmpp.util.DefaultComposer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* An implementation of @{link Producer} which use the SMPP protocol
*/
public class SmppProducer extends DefaultProducer {
private static final transient Logger LOG = LoggerFactory.getLogger(SmppProducer.class);
private SmppConfiguration configuration;
private SMPPSession session;
private SessionStateListener internalSessionStateListener;
private final ReentrantLock connectLock = new ReentrantLock();
public SmppProducer(SmppEndpoint endpoint, SmppConfiguration config) {
super(endpoint);
this.configuration = config;
this.internalSessionStateListener = new SessionStateListener() {
public void onStateChange(SessionState newState, SessionState oldState, Object source) {
if (configuration.getSessionStateListener() != null) {
configuration.getSessionStateListener().onStateChange(newState, oldState, source);
}
if (newState.equals(SessionState.CLOSED)) {
LOG.warn("Lost connection to: {} - trying to reconnect...", getEndpoint().getConnectionString());
closeSession();
reconnect(configuration.getInitialReconnectDelay());
}
}
};
}
@Override
protected void doStart() throws Exception {
super.doStart();
if (!getConfiguration().isLazySessionCreation()) {
if (connectLock.tryLock()) {
try {
session = createSession();
} finally {
connectLock.unlock();
}
}
}
}
private SMPPSession createSession() throws IOException {
LOG.debug("Connecting to: " + getEndpoint().getConnectionString() + "...");
SMPPSession session = createSMPPSession();
session.setEnquireLinkTimer(this.configuration.getEnquireLinkTimer());
session.setTransactionTimer(this.configuration.getTransactionTimer());
session.addSessionStateListener(internalSessionStateListener);
session.connectAndBind(
this.configuration.getHost(),
this.configuration.getPort(),
new BindParameter(
BindType.BIND_TX,
this.configuration.getSystemId(),
this.configuration.getPassword(),
this.configuration.getSystemType(),
TypeOfNumber.valueOf(configuration.getTypeOfNumber()),
NumberingPlanIndicator.valueOf(configuration.getNumberingPlanIndicator()),
""));
LOG.info("Connected to: " + getEndpoint().getConnectionString());
return session;
}
/**
* Factory method to easily instantiate a mock SMPPSession
*
* @return the SMPPSession
*/
SMPPSession createSMPPSession() {
return new SMPPSession(new SynchronizedPDUSender(new DefaultPDUSender(
new DefaultComposer())), new DefaultPDUReader(), SmppConnectionFactory
.getInstance(configuration));
}
public void process(Exchange exchange) throws Exception {
if (session == null) {
if (this.configuration.isLazySessionCreation()) {
if (connectLock.tryLock()) {
try {
if (session == null) {
// set the system id and password with which we will try to connect to the SMSC
Message in = exchange.getIn();
String systemId = in.getHeader(SmppConstants.SYSTEM_ID, String.class);
String password = in.getHeader(SmppConstants.PASSWORD, String.class);
if (systemId != null && password != null) {
log.info("using the system id '{}' to connect to the SMSC...", systemId);
this.configuration.setSystemId(systemId);
this.configuration.setPassword(password);
}
session = createSession();
}
} finally {
connectLock.unlock();
}
}
}
}
// only possible by trying to reconnect
if (this.session == null) {
throw new IOException("Lost connection to " + getEndpoint().getConnectionString() + " and yet not reconnected");
}
SmppCommand command = getEndpoint().getBinding().createSmppCommand(session, exchange);
command.execute(exchange);
}
@Override
protected void doStop() throws Exception {
LOG.debug("Disconnecting from: " + getEndpoint().getConnectionString() + "...");
super.doStop();
closeSession();
LOG.info("Disconnected from: " + getEndpoint().getConnectionString());
}
private void closeSession() {
if (session != null) {
session.removeSessionStateListener(this.internalSessionStateListener);
// remove this hack after http://code.google.com/p/jsmpp/issues/detail?id=93 is fixed
try {
Thread.sleep(1000);
session.unbindAndClose();
} catch (Exception e) {
LOG.warn("Could not close session " + session);
}
session = null;
}
}
private void reconnect(final long initialReconnectDelay) {
if (connectLock.tryLock()) {
try {
Runnable r = new Runnable() {
public void run() {
boolean reconnected = false;
LOG.info("Schedule reconnect after " + initialReconnectDelay + " millis");
try {
Thread.sleep(initialReconnectDelay);
} catch (InterruptedException e) {
}
int attempt = 0;
while (!(isStopping() || isStopped()) && (session == null || session.getSessionState().equals(SessionState.CLOSED))) {
try {
LOG.info("Trying to reconnect to " + getEndpoint().getConnectionString() + " - attempt #" + (++attempt) + "...");
session = createSession();
reconnected = true;
} catch (IOException e) {
LOG.info("Failed to reconnect to " + getEndpoint().getConnectionString());
closeSession();
try {
Thread.sleep(configuration.getReconnectDelay());
} catch (InterruptedException ee) {
}
}
}
if (reconnected) {
LOG.info("Reconnected to " + getEndpoint().getConnectionString());
}
}
};
Thread t = new Thread(r);
t.start();
t.join();
} catch (InterruptedException e) {
// noop
} finally {
connectLock.unlock();
}
}
}
@Override
public SmppEndpoint getEndpoint() {
return (SmppEndpoint) super.getEndpoint();
}
/**
* Returns the smppConfiguration for this producer
*
* @return the configuration
*/
public SmppConfiguration getConfiguration() {
return configuration;
}
@Override
public String toString() {
return "SmppProducer[" + getEndpoint().getConnectionString() + "]";
}
}