org.wildfly.httpclient.ejb.RemoteHTTPHandler Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2017 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed 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.wildfly.httpclient.ejb;
import java.io.IOException;
import java.util.concurrent.ExecutorService;
import javax.transaction.xa.Xid;
import org.jboss.marshalling.Unmarshaller;
import org.wildfly.transaction.client.SimpleXid;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import io.undertow.util.AttachmentKey;
/**
* Undertow HTTP handler that is responsible for initial parsing of EJB over HTTP messages
*
* @author Stuart Douglas
*/
public abstract class RemoteHTTPHandler implements HttpHandler {
private final ExecutorService executorService;
private static final AttachmentKey EXECUTOR = AttachmentKey.create(ExecutorService.class);
public RemoteHTTPHandler(ExecutorService executorService) {
this.executorService = executorService;
}
@Override
public final void handleRequest(HttpServerExchange exchange) throws Exception {
if (exchange.isInIoThread()) {
if (executorService == null) {
exchange.dispatch(this);
} else {
exchange.putAttachment(EXECUTOR, executorService);
exchange.dispatch(executorService, this);
}
return;
} else if (executorService != null && exchange.getAttachment(EXECUTOR) == null) {
exchange.putAttachment(EXECUTOR, executorService);
exchange.dispatch(executorService, this);
return;
}
exchange.startBlocking();
handleInternal(exchange);
}
protected abstract void handleInternal(HttpServerExchange exchange) throws Exception;
protected ReceivedTransaction readTransaction(Unmarshaller unmarshaller) throws IOException {
int type = unmarshaller.readByte();
if (type == 0) {
return null;
} else if (type == 1 || type == 2) {
int formatId = unmarshaller.readInt();
int len = unmarshaller.readInt();
byte[] globalId = new byte[len];
unmarshaller.readFully(globalId);
len = unmarshaller.readInt();
byte[] branchId = new byte[len];
unmarshaller.readFully(branchId);
SimpleXid simpleXid = new SimpleXid(formatId, globalId, branchId);
if (type == 2) {
return new ReceivedTransaction(simpleXid, unmarshaller.readInt(), true);
}
return new ReceivedTransaction(simpleXid, 0, false);
} else {
throw EjbHttpClientMessages.MESSAGES.invalidTransactionType(type);
}
}
static class ReceivedTransaction {
final Xid xid;
final int remainingTime;
final boolean outflowed;
ReceivedTransaction(Xid xid, int remainingTime, boolean outflowed) {
this.xid = xid;
this.remainingTime = remainingTime;
this.outflowed = outflowed;
}
public Xid getXid() {
return xid;
}
public int getRemainingTime() {
return remainingTime;
}
public boolean isOutflowed() {
return outflowed;
}
}
}