/**
* 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.resource;
import org.candlepin.audit.EventSink;
import org.candlepin.common.exceptions.BadRequestException;
import org.candlepin.common.exceptions.ServiceUnavailableException;
import org.candlepin.model.CuratorException;
import org.candlepin.model.Rules;
import org.candlepin.model.RulesCurator;
import com.google.inject.Inject;
import org.apache.commons.codec.binary.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xnap.commons.i18n.I18n;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
/**
* Rules API entry path
*/
@Path("/rules")
public class RulesResource {
private static Logger log = LoggerFactory.getLogger(RulesResource.class);
private RulesCurator rulesCurator;
private I18n i18n;
private EventSink sink;
/**
* Default ctor
* @param rulesCurator Curator used to interact with Rules.
*/
@Inject
public RulesResource(RulesCurator rulesCurator,
I18n i18n, EventSink sink) {
this.rulesCurator = rulesCurator;
this.i18n = i18n;
this.sink = sink;
}
/**
* Uploads the Rules
* <p>
* Returns a copy of the uploaded rules.
*
* @param rulesBuffer rules to upload.
* @return a String object
* @httpcode 400
* @httpcode 200
*/
@POST
@Consumes({ MediaType.APPLICATION_JSON, MediaType.TEXT_PLAIN })
@Produces({ MediaType.TEXT_PLAIN, MediaType.APPLICATION_JSON })
public String upload(String rulesBuffer) {
if (rulesBuffer == null || "".equals(rulesBuffer)) {
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
Rules rules = null;
try {
String decoded = new String(Base64.decodeBase64(rulesBuffer));
rules = new Rules(decoded);
}
catch (Throwable t) {
log.error("Exception in rules upload", t);
throw new BadRequestException(
i18n.tr("Error decoding the rules. The text should be base 64 encoded"));
}
Rules oldRules = rulesCurator.getRules();
rulesCurator.update(rules);
sink.emitRulesModified(oldRules, rules);
return rulesBuffer;
}
/**
* Retrieves the Rules
*
* @return a String object
* @httpcode 503
* @httpcode 200
*/
@GET
@Produces({ MediaType.APPLICATION_JSON, MediaType.TEXT_PLAIN })
public String get() {
try {
String rules = rulesCurator.getRules().getRules();
if ((rules != null) && (rules.length() > 0)) {
return Base64.encodeBase64String(rules.getBytes());
}
return "";
}
catch (CuratorException e) {
log.error("couldn't read rules file", e);
throw new ServiceUnavailableException(i18n.tr("couldn't read rules file"));
}
}
/**
* Removes the Rules
* <p>
* Deletes any uploaded rules, uses bundled rules instead
*
* @httpcode 200
*/
@DELETE
@Produces(MediaType.APPLICATION_JSON)
public void delete() {
Rules deleteRules = rulesCurator.getRules();
rulesCurator.delete(deleteRules);
sink.emitRulesDeleted(deleteRules);
}
}