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/*
* ============LICENSE_START========================================================================
* ONAP : ccsdk feature sdnr wt
* =================================================================================================
* Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
* =================================================================================================
* 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.
* ============LICENSE_END==========================================================================
*/
package org.onap.ccsdk.features.sdnr.wt.odlux;
import com.google.common.io.Files;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.onap.ccsdk.features.sdnr.wt.odlux.model.bundles.OdluxBundleLoader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ResFilesServlet extends HttpServlet {
private static final long serialVersionUID = -6807215213921798293L;
private static final Logger LOG = LoggerFactory.getLogger(ResFilesServlet.class);
private static final String LOGO_OVERWRITE_FILENAME = "etc/logo.gif";
private static final String LOGO_URL="/odlux/images/onapLogo.gif";
private final IndexOdluxBundle indexBundle;
public ResFilesServlet() {
super();
indexBundle = new IndexOdluxBundle();
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
final String fn = req.getRequestURI();
LOG.debug("Get request with for URI: {}", fn);
if(LOGO_URL.equals(fn)) {
File f = new File(LOGO_OVERWRITE_FILENAME);
if(f.exists()) {
resp.setStatus(HttpURLConnection.HTTP_OK);
resp.setContentType("image/gif");
try {
Files.copy(f, resp.getOutputStream());
} catch (IOException e) {
LOG.warn("Can not copy data", e);
resp.setStatus(500);
}
return;
}
}
OdluxBundleLoader odluxBundleLoader = OdluxBundleLoaderImpl.getInstance();
if (odluxBundleLoader != null) {
String fileContent = odluxBundleLoader.getResourceContent(fn, indexBundle);
if (fileContent != null) {
//Store header info
String mimeType = getMimeType(fn);
byte[] byteContent = fileContent.getBytes(java.nio.charset.StandardCharsets.UTF_8);
int length = byteContent.length;
LOG.debug("Found file in resources. Name {} mimetype {} length {} and write to output stream", fn,
mimeType, length);
resp.setContentType(mimeType);
resp.setContentLength(length);
resp.setStatus(HttpURLConnection.HTTP_OK);
try (OutputStream os = resp.getOutputStream()) {
os.write(byteContent);
os.flush();
} catch (IOException e) {
LOG.warn("Can not write data", e);
resp.setStatus(500);
}
} else {
LOG.debug("File {} not found in res.", fn);
resp.setStatus(HttpURLConnection.HTTP_NOT_FOUND);
}
} else {
LOG.debug("BundleLoaderInstance not found. {}", fn);
resp.setStatus(HttpURLConnection.HTTP_NOT_FOUND);
}
}
public String loadFileContent(String filename) {
return this.indexBundle.getResourceFileContent(filename);
}
//Provide own function that can be overloaded for test
public String getMimeType(String fileName) {
String t = getServletContext().getMimeType(fileName);
if(t.startsWith("text")) {
t+="; charset=utf-8";
}
return t;
}
}
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