/**
* 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.servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import org.apache.camel.component.http.CamelServlet;
import org.apache.camel.component.http.HttpConsumer;
import org.apache.camel.converter.ObjectConverter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Camel HTTP servlet which can be used in Camel routes to route servlet invocations in routes.
*/
public class CamelHttpTransportServlet extends CamelServlet {
private static final long serialVersionUID = -1797014782158930490L;
private static final Logger LOG = LoggerFactory.getLogger(CamelHttpTransportServlet.class);
private HttpRegistry httpRegistry;
private boolean ignoreDuplicateServletName;
@Override
public void init(ServletConfig config) throws ServletException {
super.init(config);
String ignore = config.getInitParameter("ignoreDuplicateServletName");
Boolean bool = ObjectConverter.toBoolean(ignore);
if (bool != null) {
ignoreDuplicateServletName = bool;
} else {
// always log so people can see it easier
String msg = "Invalid parameter value for init-parameter ignoreDuplicateServletName with value: " + ignore;
LOG.error(msg);
throw new ServletException(msg);
}
String name = config.getServletName();
String contextPath = config.getServletContext().getContextPath();
if (httpRegistry == null) {
httpRegistry = DefaultHttpRegistry.getHttpRegistry(name);
CamelServlet existing = httpRegistry.getCamelServlet(name);
if (existing != null) {
String msg = "Duplicate ServletName detected: " + name + ". Existing: " + existing + " This: " + this.toString()
+ ". Its advised to use unique ServletName per Camel application.";
// always log so people can see it easier
if (isIgnoreDuplicateServletName()) {
LOG.warn(msg);
} else {
LOG.error(msg);
throw new ServletException(msg);
}
}
httpRegistry.register(this);
}
LOG.info("Initialized CamelHttpTransportServlet[name={}, contextPath={}]", getServletName(), contextPath);
}
@Override
public void destroy() {
DefaultHttpRegistry.removeHttpRegistry(getServletName());
if (httpRegistry != null) {
httpRegistry.unregister(this);
httpRegistry = null;
}
LOG.info("Destroyed CamelHttpTransportServlet[{}]", getServletName());
}
private ServletEndpoint getServletEndpoint(HttpConsumer consumer) {
if (!(consumer.getEndpoint() instanceof ServletEndpoint)) {
throw new RuntimeException("Invalid consumer type. Must be ServletEndpoint but is "
+ consumer.getClass().getName());
}
return (ServletEndpoint)consumer.getEndpoint();
}
@Override
public void connect(HttpConsumer consumer) {
ServletEndpoint endpoint = getServletEndpoint(consumer);
if (endpoint.getServletName() != null && endpoint.getServletName().equals(getServletName())) {
super.connect(consumer);
}
}
public boolean isIgnoreDuplicateServletName() {
return ignoreDuplicateServletName;
}
@Override
public String toString() {
String name = getServletName();
if (name != null) {
return "CamelHttpTransportServlet[name=" + getServletName() + "]";
} else {
return "CamelHttpTransportServlet";
}
}
}