@Override
public HttpHandler createHttpHandler(Predicate predicate, final HttpHandler next) {
// this is a bit of a hack at the moment. Basically we only want to create a single mod_cluster
// instance
// not matter how many filter refs use it, also mod_cluster at this point has no way
// to specify the next handler. To get around this we invoke the mod_proxy handler
// and then if it has not dispatched or handled the request then we know that we can
// just pass it on to the next handler
final HttpHandler mcmp =
managementAccessPredicate != null
? Handlers.predicate(managementAccessPredicate, config.create(modCluster, next), next)
: config.create(modCluster, next);
final HttpHandler proxyHandler = modCluster.getProxyHandler();
HttpHandler theHandler =
new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
proxyHandler.handleRequest(exchange);
if (!exchange.isDispatched() && !exchange.isComplete()) {
exchange.setResponseCode(200);
mcmp.handleRequest(exchange);
}
}
};
UndertowLogger.ROOT_LOGGER.debug("HttpHandler for mod_cluster MCMP created.");
if (predicate != null) {
return new PredicateHandler(predicate, theHandler, next);
} else {
return theHandler;
}
}
@Override
public synchronized void stop(StopContext context) {
super.stop(context);
modCluster.stop();
modCluster = null;
config = null;
}
@Override
public synchronized void start(StartContext context) throws StartException {
super.start(context);
SecurityRealm realm = securityRealm.getOptionalValue();
// TODO: SSL support for the client
// TODO: wire up idle timeout when new version of undertow arrives
final ModCluster.Builder modClusterBuilder;
final XnioWorker worker = workerInjectedValue.getValue();
if (realm == null) {
modClusterBuilder = ModCluster.builder(worker);
} else {
SSLContext sslContext = realm.getSSLContext();
OptionMap.Builder builder = OptionMap.builder();
builder.set(Options.USE_DIRECT_BUFFERS, true);
OptionMap combined = builder.getMap();
XnioSsl xnioSsl = new UndertowXnioSsl(worker.getXnio(), combined, sslContext);
modClusterBuilder = ModCluster.builder(worker, UndertowClient.getInstance(), xnioSsl);
}
modClusterBuilder
.setHealthCheckInterval(healthCheckInterval)
.setMaxRequestTime(maxRequestTime)
.setCacheConnections(cachedConnections)
.setQueueNewRequests(requestQueueSize > 0)
.setRequestQueueSize(requestQueueSize)
.setRemoveBrokenNodes(removeBrokenNodes)
.setTtl(connectionIdleTimeout)
.setMaxConnections(connectionsPerThread)
.setUseAlias(useAlias);
modCluster = modClusterBuilder.build();
MCMPConfig.Builder builder = MCMPConfig.builder();
InetAddress multicastAddress = advertiseSocketBinding.getValue().getMulticastAddress();
if (multicastAddress == null) {
throw UndertowLogger.ROOT_LOGGER.advertiseSocketBindingRequiresMulticastAddress();
}
if (advertiseFrequency > 0) {
builder
.enableAdvertise()
.setAdvertiseAddress(
advertiseSocketBinding.getValue().getSocketAddress().getAddress().getHostAddress())
.setAdvertiseGroup(multicastAddress.getHostAddress())
.setAdvertisePort(advertiseSocketBinding.getValue().getPort())
.setAdvertiseFrequency(advertiseFrequency)
.setPath(advertisePath)
.setProtocol(advertiseProtocol)
.setSecurityKey(securityKey);
}
builder.setManagementHost(managementSocketBinding.getValue().getSocketAddress().getHostName());
builder.setManagementPort(managementSocketBinding.getValue().getSocketAddress().getPort());
config = builder.build();
if (advertiseFrequency > 0) {
try {
modCluster.advertise(config);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
modCluster.start();
}