/**
* 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.cqs.controller;
import javax.servlet.AsyncContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.comcast.cmb.common.model.User;
import com.comcast.cmb.common.persistence.PersistenceFactory;
import com.comcast.cmb.common.util.CMBErrorCodes;
import com.comcast.cmb.common.util.CMBException;
import com.comcast.cqs.io.CQSMessagePopulator;
import com.comcast.cqs.model.CQSQueue;
import com.comcast.cqs.util.CQSConstants;
import com.comcast.cqs.util.CQSErrorCodes;
/**
* Delete message
* @author baosen, vvenkatraman, bwolf
*
*/
public class CQSDeleteMessageAction extends CQSAction {
public CQSDeleteMessageAction() {
super("DeleteMessage");
}
private boolean isValidReceiptHandle(String receiptHandle) {
if (receiptHandle == null) {
return false;
}
String elements[] = receiptHandle.split(":");
if (elements.length < 3) {
return false;
}
try {
Long.parseLong(elements[elements.length-1]);
Long.parseLong(elements[elements.length-2]);
} catch (Exception ex) {
return false;
}
return true;
}
@Override
public boolean doAction(User user, AsyncContext asyncContext) throws Exception {
HttpServletRequest request = (HttpServletRequest)asyncContext.getRequest();
HttpServletResponse response = (HttpServletResponse)asyncContext.getResponse();
CQSQueue queue = CQSCache.getCachedQueue(user, request);
String receiptHandle = request.getParameter(CQSConstants.RECEIPT_HANDLE);
if (receiptHandle == null) {
throw new CMBException(CMBErrorCodes.MissingParameter, "ReceiptHandle not found");
}
if (!isValidReceiptHandle(receiptHandle)) {
throw new CMBException(CQSErrorCodes.ReceiptHandleInvalid, "The input receipt handle is invalid");
}
PersistenceFactory.getCQSMessagePersistence().deleteMessage(queue.getRelativeUrl(), receiptHandle);
String out = CQSMessagePopulator.getDeleteMessageResponse();
writeResponse(out, response);
return true;
}
}