/**
* Make this HTTPFEDispatcher terminate. Note that when the BackEnd receives the termination
* notification (explicitly sent in case of a self-initiated shutdown or attached to the response
* to the EXIT command), it closes the input connection. The InputManager gets an exception and,
* since it has been killed, terminates.
*/
public void shutdown() {
terminator = Thread.currentThread();
myLogger.log(
Logger.INFO,
"Dispatcher shutting down. Self-initiated = " + (terminator != myInputManager));
if (terminator != myInputManager) {
// Self-initiated shut down
// If connected, explicitly notify the BackEnd.
if (myDisconnectionManager.isReachable()) {
JICPPacket pkt =
new JICPPacket(JICPProtocol.COMMAND_TYPE, (byte) (JICPProtocol.DEFAULT_INFO), null);
myLogger.log(Logger.INFO, "Pushing termination notification");
try {
deliver(pkt);
} catch (IOException ioe) {
// When the BackEnd receives the termination notification,
// it just closes the connection --> we always have this exception
myLogger.log(Logger.FINE, "BackEnd closed");
}
}
// Kill the InputManager
myInputManager.kill();
}
}
/** Create a BackEnd in the fixed network and return a stub to communicate with it */
public BackEnd getBackEnd(FrontEnd fe, Properties p) throws IMTPException {
props = p;
beAddrsText = props.getProperty(FrontEnd.REMOTE_BACK_END_ADDRESSES);
backEndAddresses = parseBackEndAddresses(beAddrsText);
// Host
String host = props.getProperty("host");
if (host == null) {
host = "localhost";
}
// Port
int port = JICPProtocol.DEFAULT_PORT;
try {
port = Integer.parseInt(props.getProperty("port"));
} catch (NumberFormatException nfe) {
// Use default
}
// Compose URL. Note that we build a JICPAddress just to avoid loading the HTTPAddress class.
mediatorTA = JICPProtocol.getInstance().buildAddress(host, String.valueOf(port), null, null);
// Mediator class
String tmp = props.getProperty(JICPProtocol.MEDIATOR_CLASS_KEY);
if (tmp != null) {
myMediatorClass = tmp;
} else {
// Set the default mediator class since this must be propagated to the mediator.
props.setProperty(JICPProtocol.MEDIATOR_CLASS_KEY, myMediatorClass);
}
// Read re-connection retry time
long retryTime = JICPProtocol.DEFAULT_RETRY_TIME;
try {
retryTime = Long.parseLong(props.getProperty(JICPProtocol.RECONNECTION_RETRY_TIME_KEY));
} catch (Exception e) {
// Use default
}
// Read Max disconnection time
maxDisconnectionTime = JICPProtocol.DEFAULT_MAX_DISCONNECTION_TIME;
try {
maxDisconnectionTime =
Long.parseLong(props.getProperty(JICPProtocol.MAX_DISCONNECTION_TIME_KEY));
} catch (Exception e) {
// Use default
props.setProperty(
JICPProtocol.MAX_DISCONNECTION_TIME_KEY, String.valueOf(maxDisconnectionTime));
}
// Read Keep-alive time
keepAliveTime = JICPProtocol.DEFAULT_KEEP_ALIVE_TIME;
try {
keepAliveTime = Long.parseLong(props.getProperty(JICPProtocol.KEEP_ALIVE_TIME_KEY));
} catch (Exception e) {
// Use default
props.setProperty(JICPProtocol.KEEP_ALIVE_TIME_KEY, String.valueOf(keepAliveTime));
}
if (myLogger.isLoggable(Logger.CONFIG)) {
myLogger.log(Logger.CONFIG, "Remote URL = http://" + host + ":" + port);
myLogger.log(Logger.CONFIG, "Mediator class = " + myMediatorClass);
myLogger.log(Logger.CONFIG, "Reconnection retry time = " + retryTime);
myLogger.log(Logger.CONFIG, "Max disconnection time = " + maxDisconnectionTime);
myLogger.log(Logger.CONFIG, "Keep-alive time = " + keepAliveTime);
}
myDisconnectionManager = new DisconnectionManager(retryTime, maxDisconnectionTime);
myKeepAliveManager = new KeepAliveManager(keepAliveTime);
myInputManager = new InputManager();
// Read the owner if any
owner = props.getProperty("owner");
// Create the BackEnd stub and the FrontEnd skeleton
myStub = new BackEndStub(this);
mySkel = new FrontEndSkel(fe);
// Start the InputManager
myInputManager.start();
// Create the remote BackEnd
createBackEnd();
return myStub;
}