/**
* Copyright (c) 2009 - 2012 Red Hat, Inc.
*
* This software is licensed to you under the GNU General Public License,
* version 2 (GPLv2). There is NO WARRANTY for this software, express or
* implied, including the implied warranties of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2
* along with this software; if not, see
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
* Red Hat trademarks are not licensed under GPLv2. No permission is
* granted to use or replicate Red Hat trademarks that are incorporated
* in this software or its documentation.
*/
package org.candlepin.servlet.filter;
import org.candlepin.audit.EventSink;
import org.candlepin.common.filter.TeeHttpServletResponse;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.core.Response.Status;
/**
* CandlepinScopeFilter
*
* A servlet filter used to dispatch queued events *if* the request was successful.
*
*/
@Singleton
public class EventFilter implements Filter {
private static Logger log = LoggerFactory.getLogger(EventFilter.class);
private final EventSink eventSink;
@Inject
public EventFilter(EventSink eventSink) {
this.eventSink = eventSink;
}
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
TeeHttpServletResponse resp = new TeeHttpServletResponse((HttpServletResponse) response);
chain.doFilter(request, resp);
Status status = Status.fromStatusCode(resp.getStatus());
if (status.getFamily() == Status.Family.SUCCESSFUL) {
eventSink.sendEvents();
}
else {
eventSink.rollback();
log.debug("Request failed, skipping event sending, status={}", status);
}
}
@Override
public void destroy() {
}
@Override
public void init(FilterConfig config) throws ServletException {
}
}