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/*-
* ============LICENSE_START=======================================================
* ONAP-PAP-REST
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.pap.xacml.rest.controller;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.net.URI;
import java.util.List;
import java.util.UUID;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.onap.policy.common.logging.eelf.MessageCodes;
import org.onap.policy.common.logging.eelf.PolicyLogger;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.pap.xacml.rest.XACMLPapServlet;
import org.onap.policy.rest.dao.CommonClassDao;
import org.onap.policy.rest.jpa.PolicyEntity;
import org.onap.policy.rest.jpa.PolicyVersion;
import org.onap.policy.xacml.std.pap.StdPDPGroup;
import org.onap.policy.xacml.std.pap.StdPDPPolicy;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.att.research.xacml.api.pap.PAPException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
@Controller
public class PushPolicyController {
private static final Logger LOGGER = FlexLogger.getLogger(PushPolicyController.class);
private static CommonClassDao commonClassDao;
@Autowired
public PushPolicyController(CommonClassDao commonClassDao){
PushPolicyController.commonClassDao = commonClassDao;
}
public PushPolicyController(){}
@RequestMapping(value="/pushPolicy", method=RequestMethod.POST)
public void pushPolicy(HttpServletRequest request, HttpServletResponse response){
ObjectMapper mapper = new ObjectMapper();
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
try {
JsonNode root = mapper.readTree(request.getInputStream());
String policyScope = root.get("policyScope").asText();
String filePrefix = root.get("filePrefix").asText();
String policyName = root.get("policyName").asText();
String pdpGroup = root.get("pdpGroup").asText();
String requestID = request.getHeader("X-ECOMP-RequestID");
if(requestID==null){
requestID = UUID.randomUUID().toString();
LOGGER.info("No request ID provided, sending generated ID: " + requestID.toString());
}
LOGGER.info("Push policy Request : " + root.asText());
String policyVersionName = policyScope.replace(".", File.separator) + File.separator
+ filePrefix + policyName;
List<?> policyVersionObject = commonClassDao.getDataById(PolicyVersion.class, "policyName", policyVersionName);
if(policyVersionObject!=null){
PolicyVersion policyVersion = (PolicyVersion) policyVersionObject.get(0);
String policyID = policyVersionName.replace(File.separator, "."); // This is before adding version.
policyVersionName += "." + policyVersion.getActiveVersion() + ".xml";
addPolicyToGroup(policyScope, policyID, policyVersionName.replace(File.separator, "."), pdpGroup, response);
}else{
String message = "Unknown Policy '" + policyName + "'";
PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE + " " + message);
response.addHeader("error", "unknownPolicy");
response.addHeader("operation", "push");
response.addHeader("message", message);
response.setStatus(HttpServletResponse.SC_NOT_FOUND);
return;
}
//safetyChecker(policyName);
} catch (NullPointerException | IOException e) {
LOGGER.error(e);
response.setStatus(HttpServletResponse.SC_NOT_FOUND);
response.addHeader("error", "unknown");
response.addHeader("operation", "push");
return;
}
}
private void addPolicyToGroup(String policyScope, String policyID, String policyName, String pdpGroup, HttpServletResponse response) {
StdPDPGroup selectedPDPGroup = null;
StdPDPPolicy selectedPolicy = null;
//Get the current policies from the Group and Add the new one
//Set<PDPPolicy> currentPoliciesInGroup = null;
try {
selectedPDPGroup = (StdPDPGroup) XACMLPapServlet.getPAPEngine().getGroup(pdpGroup);
} catch (PAPException e1) {
PolicyLogger.error(e1);
}
if(selectedPDPGroup==null){
String message = "Unknown groupId '" + selectedPDPGroup + "'";
PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE + " " + message);
response.addHeader("error", "unknownGroupId");
response.addHeader("operation", "push");
response.addHeader("message", message);
response.setStatus(HttpServletResponse.SC_NOT_FOUND);
return;
}
//Get PolicyEntity from DB;
EntityManager em = XACMLPapServlet.getEmf().createEntityManager();
Query createPolicyQuery = em.createQuery("SELECT p FROM PolicyEntity p WHERE p.scope=:scope AND p.policyName=:policyName");
createPolicyQuery.setParameter("scope", policyScope);
createPolicyQuery.setParameter("policyName", policyName.substring(policyScope.length()+1));
List<?> createPolicyQueryList = createPolicyQuery.getResultList();
PolicyEntity policyEntity = null;
if(createPolicyQueryList.size()>0){
policyEntity = (PolicyEntity)createPolicyQueryList.get(0);
}else{
PolicyLogger.error("Somehow, more than one policy with the same scope, name, and deleted status were found in the database");
String message = "Unknown Policy '" + policyName + "'";
PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE + " " + message);
response.addHeader("error", "unknownPolicy");
response.addHeader("operation", "push");
response.addHeader("message", message);
response.setStatus(HttpServletResponse.SC_NOT_FOUND);
return;
}
File temp = new File(policyName);
try {
BufferedWriter bw = new BufferedWriter(new FileWriter(temp));
bw.write(policyEntity.getPolicyData());
bw.close();
URI selectedURI = temp.toURI();
// Create the policy Object
selectedPolicy = new StdPDPPolicy(policyName, true, policyID, selectedURI);
} catch (IOException e) {
LOGGER.error("Unable to create policy '" + policyName + "': "+ e.getMessage());
}
try {
new ObjectOutputStream(response.getOutputStream()).writeObject(selectedPolicy);
} catch (IOException e) {
LOGGER.error(e);
response.addHeader("error", "policyCopyError");
response.addHeader("message", e.getMessage());
response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
return;
}
response.addHeader("Content-Type","application/json");
response.setStatus(HttpServletResponse.SC_ACCEPTED);
response.addHeader("operation", "push");
response.addHeader("policyId", policyName);
return;
// TODO : Check point to push policies within PAP.
/*PolicyDBDaoTransaction addPolicyToGroupTransaction = XACMLPapServlet.getDbDaoTransaction();
try{
if (selectedPolicy != null) {
// Add Current policies from container
currentPoliciesInGroup = selectedPDPGroup.getPolicies();
// copy policy to PAP
addPolicyToGroupTransaction.addPolicyToGroup(selectedPDPGroup.getId(), policyName,"XACMLPapServlet.pushPolicyController");
((StdPDPGroup) selectedPDPGroup).copyPolicyToFile(policyName, policyID, new FileInputStream(temp));
addPolicyToGroupTransaction.commitTransaction();
}
}catch (Exception e) {
addPolicyToGroupTransaction.rollbackTransaction();
String message = "Policy '" + policyName + "' not copied to group '" + pdpGroup +"': " + e;
PolicyLogger.error(MessageCodes.ERROR_PROCESS_FLOW + " " + message);
PolicyLogger.audit("Transaction Failed - See Error.log");
response.addHeader("error", "policyCopyError");
response.addHeader("message", message);
response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
return;
}
//If the selected policy is in the group we must remove it because the name is default
for (PDPPolicy existingPolicy : currentPoliciesInGroup) {
if (existingPolicy.getId().equals(selectedPolicy.getId())) {
selectedPDPGroup.removePolicyFromGroup(existingPolicy);
LOGGER.debug("Removing existing policy: " + existingPolicy);
break;
}
}
//Update the PDP Group after removing old version of policy
//Set<PDPPolicy> updatedPoliciesInGroup = selectedPDPGroup.getPolicies();
//need to remove the policy with default name from group
for (PDPPolicy updatedPolicy : currentPoliciesInGroup) {
if (updatedPolicy.getName().equalsIgnoreCase("default")) {
selectedPDPGroup.removePolicyFromGroup(updatedPolicy);
}
}
Set<PDPPolicy> policies = selectedPDPGroup.getPolicies();
policies.add(selectedPolicy);
selectedPDPGroup.setPolicies(policies);
// Update now.
try {
XACMLPapServlet.getPAPEngine().updateGroup(selectedPDPGroup);
} catch (PAPException e) {
// TODO Auto-generated catch block
logger.error("Exception Occured"+e);
}
// policy file copied ok and the Group was updated on the PDP
response.setStatus(HttpServletResponse.SC_NO_CONTENT);
response.addHeader("operation", "push");
response.addHeader("policyId", policyName);
response.addHeader("groupId", pdpGroup);
return;*/
}
}
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