/**
* Copyright 2012 Comcast Corporation
*
* 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.
*/
package com.comcast.cns.controller;
import javax.servlet.AsyncContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.json.JSONObject;
import com.comcast.cmb.common.model.CMBPolicy;
import com.comcast.cmb.common.model.User;
import com.comcast.cmb.common.persistence.PersistenceFactory;
import com.comcast.cmb.common.util.CMBException;
import com.comcast.cns.io.CNSAttributePopulator;
import com.comcast.cns.model.CNSTopicAttributes;
import com.comcast.cns.model.CNSTopicDeliveryPolicy;
import com.comcast.cns.util.CNSErrorCodes;
/**
* Set topic attributes
* @author bwolf, jorge
*
*/
public class CNSSetTopicAttributesAction extends CNSAction {
private static Logger logger = Logger.getLogger(CNSSetTopicAttributesAction.class);
public CNSSetTopicAttributesAction() {
super("SetTopicAttributes");
}
private boolean validateDisplayName(String displayName) {
if (displayName.length() > 100) {
return false;
}
int len = displayName.length();
for (int i=0; i< len; i++) {
char c = displayName.charAt(i);
if (c < 32 || c > 126) {
return false;
}
}
return true;
}
@Override
public boolean doAction(User user, AsyncContext asyncContext) throws Exception {
HttpServletRequest request = (HttpServletRequest)asyncContext.getRequest();
HttpServletResponse response = (HttpServletResponse)asyncContext.getResponse();
String userId = user.getUserId();
String attributeName = request.getParameter("AttributeName");
String attributeValue = request.getParameter("AttributeValue");
String topicArn = request.getParameter("TopicArn");
if ((userId == null) || (topicArn == null) || (attributeName == null) || (attributeValue == null)) {
logger.error("event=cns_set_topic_attributes error_code=InvalidParameters attribute_name=" + attributeName + " attribute_value=" + attributeValue + " topic_arn=" + topicArn + " user_id=" + userId);
throw new CMBException(CNSErrorCodes.CNS_InvalidParameter,"missing parameters");
}
CNSTopicAttributes topicAttributes = new CNSTopicAttributes();
if (attributeName.equals("DeliveryPolicy")) {
JSONObject json = new JSONObject(attributeValue);
CNSTopicDeliveryPolicy deliveryPolicy = new CNSTopicDeliveryPolicy(json);
topicAttributes.setDeliveryPolicy(deliveryPolicy);
logger.debug("event=cns_set_topic_delivery_policy topic_arn=" + topicArn + " value=" + topicAttributes.getEffectiveDeliveryPolicy());
} else if (attributeName.equals("Policy")) {
// validate policy before updating
try {
new CMBPolicy(attributeValue);
} catch (Exception ex) {
logger.warn("event=invalid_policy topic_arn=" + topicArn + " policy=" + attributeValue, ex);
throw ex;
}
topicAttributes.setPolicy(attributeValue);
logger.debug("event=cns_set_topic_policy topic_arn=" + topicArn + " value=" + topicAttributes.getPolicy());
} else if (attributeName.equals("DisplayName")) {
if (validateDisplayName(attributeValue)) {
topicAttributes.setDisplayName(attributeValue);
logger.debug("event=cns_set_topic_display_name topic_arn=" + topicArn + " value=" + attributeValue);
} else {
throw new CMBException(CNSErrorCodes.CNS_InvalidParameter,"Bad Display Name");
}
} else {
logger.error("event=cns_set_topic_attributes error_code=InvalidParameters attribute_name=" + attributeName + " attribute_value=" + attributeValue + " topic_arn=" + topicArn + " user_id=" + userId);
throw new CMBException(CNSErrorCodes.CNS_InvalidParameter,"AttributeName: " + attributeName + " is not a valid value");
}
PersistenceFactory.getCNSAttributePersistence().setTopicAttributes(topicAttributes, topicArn);
String out = CNSAttributePopulator.getSetTopicAttributesResponse();
logger.debug("event=cns_set_topic_attributes attribute_name=" + attributeName + " attribute_value=" + attributeValue + " topic_arn=" + topicArn + " user_id=" + userId);
writeResponse(out, response);
return true;
}
}