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/*-
* ============LICENSE_START=======================================================
* ONAP-PAP-REST
* ================================================================================
* Copyright (C) 2017-2019 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 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;
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.script.SimpleBindings;
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;
@Controller
public class PushPolicyController {
private static final Logger LOGGER = FlexLogger.getLogger(PushPolicyController.class);
private static CommonClassDao commonClassDao;
private static String policyNames = "policyName";
private static String errorMsg = "error";
private static String operation = "operation";
private static String messageContent = "message";
private static final String REGEX = "[0-9a-zA-Z._ ]*";
@Autowired
public PushPolicyController(CommonClassDao commonClassDao) {
PushPolicyController.commonClassDao = commonClassDao;
}
public void setCommonClassDao(CommonClassDao commonClassDao) {
PushPolicyController.commonClassDao = commonClassDao;
}
/*
* This is an empty constructor
*/
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(policyNames).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);
}
LOGGER.info("Push policy Request to get the selectedPolicy : " + root.asText());
String policyVersionName =
policyScope.replace(".", File.separator) + File.separator + filePrefix + policyName;
List<?> policyVersionObject =
commonClassDao.getDataById(PolicyVersion.class, policyNames, 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(errorMsg, "unknownPolicy");
response.addHeader(operation, "push");
response.addHeader(messageContent, message);
response.setStatus(HttpServletResponse.SC_NOT_FOUND);
}
} catch (NullPointerException | IOException e) {
LOGGER.error(e);
response.setStatus(HttpServletResponse.SC_NOT_FOUND);
response.addHeader(errorMsg, "unknown");
response.addHeader(operation, "push");
}
}
private void addPolicyToGroup(String policyScope, String policyID, String policyName, String pdpGroup,
HttpServletResponse response) {
StdPDPGroup selectedPDPGroup = null;
StdPDPPolicy selectedPolicy = null;
// Get the selected PDP Group to push the policy
try {
selectedPDPGroup = (StdPDPGroup) XACMLPapServlet.getPAPEngine().getGroup(pdpGroup);
} catch (PAPException e1) {
PolicyLogger.error(e1);
}
if (selectedPDPGroup == null) {
String message = "Unknown groupId '" + selectedPDPGroup + "'";
if (!message.matches(REGEX)) {
message = "Unknown groupId";
}
PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE + " " + message);
response.addHeader(errorMsg, "unknownGroupId");
response.addHeader(operation, "push");
response.addHeader(messageContent, message);
response.setStatus(HttpServletResponse.SC_NOT_FOUND);
return;
}
// Get PolicyEntity from DB;
String createPolicyQuery = "SELECT p FROM PolicyEntity p WHERE p.scope=:scope AND p.policyName=:policyName";
SimpleBindings params = new SimpleBindings();
params.put("scope", policyScope);
params.put(policyNames, policyName.substring(policyScope.length() + 1));
List<?> createPolicyQueryList = commonClassDao.getDataByQuery(createPolicyQuery, params);
LOGGER.info("addPolicyToGroup:Total execution time to retrieve " + policyNames + " from PolicyEntity");
PolicyEntity policyEntity = null;
if (!createPolicyQueryList.isEmpty()) {
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(errorMsg, "unknownPolicy");
response.addHeader(operation, "push");
response.addHeader(messageContent, 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());
URI selectedURI = temp.toURI();
// Create the policy Object
selectedPolicy = new StdPDPPolicy(policyName, true, policyID, selectedURI);
} catch (IOException e) {
LOGGER.error("Unable to get policy '" + policyName + "': " + e.getMessage(), e);
}
try {
new ObjectOutputStream(response.getOutputStream()).writeObject(selectedPolicy);
} catch (IOException e) {
LOGGER.error(e);
response.addHeader(errorMsg, "policyCopyError");
response.addHeader(messageContent, 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);
// TODO : Check point to push policies within PAP.
}
}
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