juzu.impl.asset.AssetServer Maven / Gradle / Ivy
/*
* Copyright 2013 eXo Platform SAS
*
* 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 juzu.impl.asset;
import juzu.impl.plugin.application.ApplicationLifeCycle;
import juzu.impl.common.Tools;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.HashSet;
/** @author Julien Viet */
public class AssetServer {
/** . */
HashSet> runtimes = new HashSet>();
public AssetServer() {
}
public void register(ApplicationLifeCycle assetManager) {
runtimes.add(assetManager);
}
public void unregister(ApplicationLifeCycle assetManager) {
runtimes.remove(assetManager);
}
public boolean doGet(String path, ServletContext ctx, HttpServletResponse resp) throws ServletException, IOException {
if (path != null && path.length() > 0) {
for (ApplicationLifeCycle runtime : runtimes) {
String contentType;
InputStream in;
URL url = runtime.getScriptManager().resolveAsset(path);
if (url != null) {
contentType = "text/javascript";
in = url.openStream();
} else {
contentType = null;
in = null;
}
if (in == null) {
url = runtime.getStylesheetManager().resolveAsset(path);
if (url != null) {
contentType = "text/css";
in = runtime.getApplication().getClassLoader().getResourceAsStream(path.substring(1));
}
}
// It could be a server resource like an image
if (in == null) {
in = ctx.getResourceAsStream(path);
if (in != null) {
int pos = path.lastIndexOf('/');
String name = pos == -1 ? path : path.substring(pos + 1);
contentType = ctx.getMimeType(name);
} else {
contentType = null;
in = null;
}
}
if (in != null) {
if (contentType != null) {
resp.setContentType(contentType);
}
Tools.copy(in, resp.getOutputStream());
return true;
}
}
}
return false;
}
}