/*
* JBoss, a division of Red Hat
* Copyright 2013, Red Hat Middleware, LLC, and individual
* contributors as indicated by the @authors tag. See the
* copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.gatein.security.oauth.social;
import java.io.IOException;
import java.net.URL;
import org.gatein.common.logging.Logger;
import org.gatein.common.logging.LoggerFactory;
import org.gatein.security.oauth.exception.OAuthException;
import org.gatein.security.oauth.exception.OAuthExceptionCode;
import org.gatein.security.oauth.utils.HttpResponseContext;
import org.gatein.security.oauth.utils.OAuthUtils;
import org.json.JSONException;
/**
* Wrap Facebook operation within block of code to handle errors
*
* @author <a href="mailto:mposolda@redhat.com">Marek Posolda</a>
*/
abstract class FacebookRequest<T> {
private static Logger log = LoggerFactory.getLogger(FacebookRequest.class);
protected abstract URL createURL(String accessToken) throws IOException;
protected abstract T parseResponse(String httpResponse) throws JSONException;
public T executeRequest(String accessToken) {
try {
URL url = createURL(accessToken);
HttpResponseContext httpResponse = OAuthUtils.readUrlContent(url.openConnection());
if (httpResponse.getResponseCode() == 200) {
return parseResponse(httpResponse.getResponse());
} else if (httpResponse.getResponseCode() == 400) {
String errorMessage = "Error when obtaining content from Facebook. Error details: " + httpResponse.getResponse();
log.warn(errorMessage);
throw new OAuthException(OAuthExceptionCode.ACCESS_TOKEN_ERROR, errorMessage);
} else {
String errorMessage = "Unspecified IO error. Http response code: " + httpResponse.getResponseCode() + ", details: " + httpResponse.getResponse();
log.warn(errorMessage);
throw new OAuthException(OAuthExceptionCode.IO_ERROR, errorMessage);
}
} catch (JSONException e) {
throw new OAuthException(OAuthExceptionCode.IO_ERROR, e);
} catch (IOException e) {
throw new OAuthException(OAuthExceptionCode.IO_ERROR, e);
}
}
}