AbstractEmbedder.java
/*
* Copyright (C) 2003-2013 eXo Platform SAS.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License
* as published by the Free Software Foundation; either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see<http://www.gnu.org/licenses/>.
*/
package org.exoplatform.commons.embedder;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URI;
import java.net.URL;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.regex.Pattern;
import javax.ws.rs.core.UriBuilder;
import org.exoplatform.container.xml.InitParams;
import org.exoplatform.container.xml.ValueParam;
import org.exoplatform.services.log.Log;
import org.json.JSONObject;
public abstract class AbstractEmbedder implements Embedder {
protected Map<Pattern, String> schemeEndpointMap = new HashMap<Pattern, String>();
protected String url;
private Pattern pattern;
AbstractEmbedder(InitParams initParams) {
Iterator<ValueParam> it = initParams.getValueParamIterator();
ValueParam valueParam = null;
while(it.hasNext()) {
valueParam = it.next();
String reg = getValue(valueParam.getName());
String feedsURL = getValue(valueParam.getValue());
pattern = Pattern.compile(reg);
schemeEndpointMap.put(pattern, feedsURL);
}
}
protected Pattern getPattern() {
return this.pattern;
}
private String getValue(String input) {
return input.replaceAll("&", "&");
}
@Override
public void setUrl(String url) {
this.url = url;
}
/** Correct URI String
*
* @param uriString URI string to correct
* @param scheme scheme to set
* @param force if force is false, only set again scheme when scheme is missing. Otherwise, always set it
* @return
*/
public String correctURIString(String uriString, String scheme, boolean force) {
URI uri = UriBuilder.fromUri(uriString).build();
if (uri.getScheme() == null || force) {
uri = UriBuilder.fromUri(uri.toString()).scheme(scheme).build();
}
return uri.toString();
}
protected JSONObject getJSONObject(URL url) {
BufferedReader bufferedReader;
try {
bufferedReader = new BufferedReader(new InputStreamReader(url.openStream()));
StringBuffer stringBuffer = new StringBuffer();
String eachLine = null;
while ((eachLine = bufferedReader.readLine()) != null) {
stringBuffer.append(eachLine);
}
bufferedReader.close();
return new JSONObject(stringBuffer.toString());
} catch (Exception e) {
getExoLogger().warn("Can't get json from url: " + url.toString());
return null;
}
}
protected abstract Log getExoLogger();
}