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/*
* ============LICENSE_START=======================================================
* ONAP : ccsdk features
* ================================================================================
* 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.common;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import org.osgi.framework.Bundle;
import org.osgi.framework.FrameworkUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Resources {
private static final Logger LOG = LoggerFactory.getLogger(Resources.class);
private static URL getFileURL(Class<?> cls,String resFile) {
Bundle b = FrameworkUtil.getBundle(cls);
URL u = null;
LOG.debug("try to get file {}", resFile);
if (b == null) {
LOG.info("Load resource as file: {}", resFile);
u = getUrlForRessource(cls,resFile);
} else {
LOG.info("Load resource from bundle: {}", resFile);
u = b.getEntry(resFile);
}
return u;
}
private static String readFile(final URL u) throws IOException {
return readFile(u.openStream());
}
private static String readFile(final InputStream s) throws IOException {
// read file
final String LR = "\n";
BufferedReader in = new BufferedReader(new InputStreamReader(s));
StringBuilder sb = new StringBuilder();
String inputLine;
while ((inputLine = in.readLine()) != null) {
sb.append(inputLine+LR);
}
in.close();
s.close();
return sb.toString();
}
public static String getFileContent( Class<?> cls, String resFile) {
LOG.debug("loading file {} from res", resFile);
URL u = getFileURL(cls,resFile);
String s=null;
if (u == null) {
LOG.warn("cannot find resfile: {}", resFile);
return null;
}
try {
s=readFile(u);
} catch (Exception e) {
LOG.warn("problem reading file: {}", e.getMessage());
}
return s;
}
public static URL getUrlForRessource(Class<?> cls,String fileOrDirectory) {
//ClassLoader loader = Thread.currentThread().getContextClassLoader();
ClassLoader loader = cls.getClassLoader();
URL url = loader.getResource(fileOrDirectory);
if(url==null && fileOrDirectory.startsWith("/")) {
url = loader.getResource(fileOrDirectory.substring(1));
}
return url;
}
}
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