/**
* 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.waveprotocol.box.server.rpc.atmosphere;
import com.google.common.io.ByteStreams;
import org.atmosphere.config.service.AtmosphereInterceptorService;
import org.atmosphere.cpr.Action;
import org.atmosphere.cpr.AtmosphereConfig;
import org.atmosphere.cpr.AtmosphereInterceptor;
import org.atmosphere.cpr.AtmosphereRequest;
import org.atmosphere.cpr.AtmosphereResource;
import org.waveprotocol.wave.util.logging.Log;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* Serve atmosphere.js file to GWT clients This class allows to serve the
* Atmosphere Javascript client from the same /atmosphere servlet path which is
* used to process any Atmosphere request instead of place it on the /static
* path. In addition, the Javascript file is put together with the rest of
* Atmosphere related source code, during the build process as any other third
* party dependency.
*
*
* @author pablojan@gmail.com (Pablo Ojanguren)
*/
@AtmosphereInterceptorService
public class AtmosphereClientInterceptor implements AtmosphereInterceptor {
private static final Log LOG = Log.get(AtmosphereClientInterceptor.class);
@Override
public void configure(AtmosphereConfig config) {
// Nothing to do
}
@Override
public Action inspect(AtmosphereResource resource) {
AtmosphereRequest request = resource.getRequest();
try {
// Find the first context parameter
String path = request.getPathInfo();
if (path == null || path.isEmpty())
return Action.CONTINUE;
if (path.startsWith("/")) {
path = path.substring(1);
}
String[] parts = path.split("/");
// Serve the file
if (parts.length > 0 && "GET".equals(resource.getRequest().getMethod()) && "atmosphere.js".equals(parts[0])) {
resource.getResponse().setContentType("text/javascript");
InputStream is =
this.getClass().getClassLoader()
.getResourceAsStream("org/waveprotocol/box/server/rpc/atmosphere/atmosphere.js");
OutputStream os = resource.getResponse().getOutputStream();
ByteStreams.copy(is, os);
return Action.CANCELLED;
}
} catch (IOException e) {
LOG.severe("Error sending atmosphere.js",e);
}
return Action.CONTINUE;
}
@Override
public void postInspect(AtmosphereResource resource) {
// Nothing to do
}
}