/*
* Copyright 2014 Jeanfrancois Arcand
*
* 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.atmosphere.util;
import org.atmosphere.cpr.AtmosphereConfig;
import org.atmosphere.cpr.AtmosphereRequest;
import org.atmosphere.cpr.FrameworkConfig;
import org.atmosphere.util.uri.UriTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.HashMap;
import java.util.Map;
/**
* Default implementation of the {@link EndpointMapper} used by the {@link org.atmosphere.cpr.AsynchronousProcessor}
* and {@link org.atmosphere.websocket.DefaultWebSocketProcessor}
*
* @author Jeanfrancois Arcand
*/
public class DefaultEndpointMapper<U> implements EndpointMapper<U> {
private static final Logger logger = LoggerFactory.getLogger(DefaultEndpointMapper.class);
public DefaultEndpointMapper() {
}
protected U match(String path, Map<String, U> handlers) {
U handler = handlers.get(path);
if (handler == null) {
final Map<String, String> m = new HashMap<String, String>();
for (Map.Entry<String, U> e : handlers.entrySet()) {
UriTemplate t = null;
try {
t = new UriTemplate(e.getKey());
logger.trace("Trying to map {} to {}", t, path);
if (t.match(path, m)) {
handler = e.getValue();
logger.trace("Mapped {} to {}", t, e.getValue());
break;
}
} finally {
if (t != null) t.destroy();
}
}
}
return handler;
}
public String computePath(AtmosphereRequest req) {
String path;
String pathInfo = null;
try {
pathInfo = req.getPathInfo();
} catch (IllegalStateException ex) {
// http://java.net/jira/browse/GRIZZLY-1301
}
if (pathInfo != null) {
path = req.getServletPath() + pathInfo;
} else {
path = req.getServletPath();
}
if (path == null || path.isEmpty()) {
path = "/";
}
return path;
}
@Override
public void configure(AtmosphereConfig config) {
}
@Override
public U map(AtmosphereRequest req, Map<String, U> handlers) {
String path = computePath(req);
U handler = map(path, handlers);
if (handler == null) {
// (2) First, try exact match
handler = map(path + (path.endsWith("/") ? "all" : "/all"), handlers);
if (handler == null) {
// (3) Wildcard
handler = map(path + "*", handlers);
// (4) try without a path
if (handler == null) {
String p = path.lastIndexOf("/") <= 0 ? "/" : path.substring(0, path.lastIndexOf("/"));
while (p.length() > 0) {
handler = map(p, handlers);
// (3.1) Try path wildcard
if (handler != null) {
break;
}
p = p.substring(0, p.lastIndexOf("/"));
}
}
// Glassfish 3.1.2 issue .. BEUUUURRRRKKKKKK!!
if (handler == null && req.getContextPath().length() < path.length()) {
path = path.substring(req.getContextPath().length());
handler = map(path, handlers);
}
}
}
req.setAttribute(FrameworkConfig.MAPPED_PATH, path);
return handler;
}
@Override
public U map(String path, Map<String, U> handlers) {
if (path == null || path.isEmpty()) {
path = "/";
}
U handler = match(path, handlers);
if (handler == null) {
// (2) First, try exact match
handler = match(path + (path.endsWith("/") ? "all" : "/all"), handlers);
if (handler == null) {
// (3) Wildcard
handler = match(path + "*", handlers);
// (4) try without a path
if (handler == null) {
String p = path.lastIndexOf("/") <= 0 ? "/" : path.substring(0, path.lastIndexOf("/"));
while (p.length() > 0 && p.indexOf("/") != -1) {
handler = match(p, handlers);
// (3.1) Try path wildcard
if (handler != null) {
break;
}
p = p.substring(0, p.lastIndexOf("/"));
}
}
}
}
return handler;
}
}