org.atmosphere.jersey.AtmosphereProviders Maven / Gradle / Ivy
/*
* 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.jersey;
import com.sun.jersey.spi.StringReader;
import com.sun.jersey.spi.StringReaderProvider;
import org.atmosphere.cpr.ApplicationConfig;
import org.atmosphere.cpr.AtmosphereResource;
import org.atmosphere.cpr.Broadcaster;
import org.atmosphere.cpr.BroadcasterFactory;
import org.atmosphere.cpr.FrameworkConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
/**
* Placeholder for injection of Atmosphere object based on
* any parameter value (header, cookie, query, matrix or path)
*
* @author [email protected]
* @author Jean-Francois Arcand
*/
public class AtmosphereProviders {
private static final Logger logger = LoggerFactory.getLogger(AtmosphereProviders.class);
public static class BroadcasterProvider implements StringReaderProvider {
@Context
HttpServletRequest req;
@Override
public StringReader getStringReader(Class type, Type genericType, Annotation[] annotations) {
if (Broadcaster.class.isAssignableFrom(type)) {
return new BroadcasterStringReader();
}
return null;
}
@StringReader.ValidateDefaultValue(false)
public class BroadcasterStringReader implements StringReader {
@Override
public Object fromString(String topic) {
Broadcaster broadcaster;
try {
AtmosphereResource r =
(AtmosphereResource)
req.getAttribute(FrameworkConfig.ATMOSPHERE_RESOURCE);
BroadcasterFactory bp = r.getAtmosphereConfig().getBroadcasterFactory();
Class c;
try {
c = (Class) Class.forName((String) req.getAttribute(ApplicationConfig.BROADCASTER_CLASS));
} catch (Throwable e) {
throw new IllegalStateException(e.getMessage());
}
broadcaster = bp.lookup(c, topic, true);
} catch (Throwable ex) {
throw new WebApplicationException(ex);
}
logger.trace("Injected Broadcaster {}", broadcaster);
req.setAttribute(AtmosphereFilter.INJECTED_BROADCASTER, broadcaster);
return broadcaster;
}
}
}
}