/**
* Send the CREATE_MEDIATOR command with the necessary parameter in order to create the BackEnd in
* the fixed network. Executed - at bootstrap time by the thread that creates the
* FrontEndContainer. - To re-attach to the platform after a fault of the BackEnd
*/
private synchronized void createBackEnd() throws IMTPException {
StringBuffer sb = BackEndStub.encodeCreateMediatorRequest(props);
if (myMediatorID != null) {
// This is a request to re-create my expired back-end
BackEndStub.appendProp(sb, JICPProtocol.MEDIATOR_ID_KEY, myMediatorID);
BackEndStub.appendProp(sb, "outcnt", String.valueOf(outCnt));
BackEndStub.appendProp(sb, "lastsid", String.valueOf(lastSid));
}
JICPPacket pkt =
new JICPPacket(
JICPProtocol.CREATE_MEDIATOR_TYPE,
JICPProtocol.DEFAULT_INFO,
null,
sb.toString().getBytes());
// Try first with the current transport address, then with the various backup addresses
for (int i = -1; i < backEndAddresses.length; i++) {
if (i >= 0) {
// Set the mediator address to a new address..
String addr = backEndAddresses[i];
int colonPos = addr.indexOf(':');
String host = addr.substring(0, colonPos);
String port = addr.substring(colonPos + 1, addr.length());
mediatorTA = new JICPAddress(host, port, myMediatorID, "");
}
try {
HTTPClientConnection hc = (HTTPClientConnection) getConnection(mediatorTA);
myLogger.log(
Logger.INFO,
"Creating BackEnd on "
+ hc.getProtocol()
+ mediatorTA.getHost()
+ ":"
+ mediatorTA.getPort());
pkt = deliver(pkt);
String replyMsg = new String(pkt.getData());
if (pkt.getType() != JICPProtocol.ERROR_TYPE) {
// BackEnd creation successful
BackEndStub.parseCreateMediatorResponse(replyMsg, props);
myMediatorID = props.getProperty(JICPProtocol.MEDIATOR_ID_KEY);
// Complete the mediator address with the mediator ID
mediatorTA =
new JICPAddress(mediatorTA.getHost(), mediatorTA.getPort(), myMediatorID, null);
myDisconnectionManager.setReachable();
myKeepAliveManager.update();
myLogger.log(Logger.INFO, "BackEnd OK. Mediator ID is " + myMediatorID);
return;
} else {
myLogger.log(Logger.WARNING, "Mediator error: " + replyMsg);
}
} catch (IOException ioe) {
// Ignore it, and try the next address...
myLogger.log(Logger.WARNING, "Connection error", ioe);
}
}
// No address succeeded!
throw new IMTPException("Error creating the BackEnd.");
}
