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/*-
* ============LICENSE_START=======================================================
* ONAP-PDP-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.pdp.rest.api.services;
import java.util.UUID;
import org.onap.policy.api.PolicyException;
import org.onap.policy.api.PushPolicyParameters;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.xacml.api.XACMLErrorConstants;
import org.onap.policy.xacml.std.pap.StdPAPPolicy;
import org.onap.policy.xacml.std.pap.StdPDPPolicy;
import org.springframework.http.HttpStatus;
import com.att.research.xacml.api.pap.PAPException;
import com.att.research.xacml.api.pap.PDPPolicy;
public class PushPolicyService {
private static final Logger LOGGER = FlexLogger.getLogger(PushPolicyService.class.getName());
private String pushResult = null;
private HttpStatus status = HttpStatus.BAD_REQUEST;
private PushPolicyParameters pushPolicyParameters = null;
private String message = null;
private String policyName = null;
private String policyScope = null;
private String pdpGroup = null;
private String policyType = null;
private String filePrefix = null;
private String clientScope = null;
public PushPolicyService(PushPolicyParameters pushPolicyParameters,
String requestID) {
this.pushPolicyParameters = pushPolicyParameters;
if(pushPolicyParameters.getRequestID()==null){
UUID requestUUID = null;
if (requestID != null && !requestID.isEmpty()) {
try {
requestUUID = UUID.fromString(requestID);
} catch (IllegalArgumentException e) {
requestUUID = UUID.randomUUID();
LOGGER.info("Generated Random UUID: " + requestUUID.toString(), e);
}
}else{
requestUUID = UUID.randomUUID();
LOGGER.info("Generated Random UUID: " + requestUUID.toString());
}
this.pushPolicyParameters.setRequestID(requestUUID);
}
try{
run();
specialCheck();
}catch(PolicyException e){
pushResult = XACMLErrorConstants.ERROR_DATA_ISSUE + e;
status = HttpStatus.BAD_REQUEST;
}
}
private void specialCheck() {
if(pushResult.contains("BAD REQUEST") || pushResult.contains("PE300")){
status = HttpStatus.BAD_REQUEST;
}
}
private void run() throws PolicyException{
// Check Validation.
if(!getValidation()){
LOGGER.error(message);
throw new PolicyException(message);
}
// Process Results.
try{
status = HttpStatus.OK;
pushResult = processResult();
}catch(Exception e){
LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + e);
status = HttpStatus.BAD_REQUEST;
throw new PolicyException(e);
}
}
private String processResult() throws PolicyException{
PAPServices papServices = new PAPServices();
String response = null;
StdPDPPolicy selectedPolicy = papServices.pushPolicy(policyScope, filePrefix, policyName, clientScope, pdpGroup, pushPolicyParameters.getRequestID());
if(selectedPolicy==null){
response = XACMLErrorConstants.ERROR_DATA_ISSUE + "response code of the URL is 404. "
+ "This indicates a problem with getting the version from the PAP or the policy does not exist.";
LOGGER.error(response);
return response;
}
try {
LOGGER.debug("StdPDPPolicy object contains: " + selectedPolicy.getId() + ", " + selectedPolicy.getName() + ", " + selectedPolicy.getLocation().toString());
response = copyPolicy(selectedPolicy, pdpGroup, clientScope, pushPolicyParameters.getRequestID());
} catch (PAPException e) {
LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW+e.getMessage());
throw new PolicyException(e);
}
LOGGER.debug("copyPolicy response: " + response);
if(response.contains("successfully")){
response = (String) papServices.callPAP(selectedPolicy, new String[]{"groupId=" + pdpGroup, "policyId="+selectedPolicy.getId(), "apiflag=addPolicyToGroup", "operation=PUT"}, pushPolicyParameters.getRequestID(), clientScope);
}
LOGGER.debug("Final API response: " + response);
return response;
}
private String copyPolicy(PDPPolicy policy, String group, String policyType, UUID requestID) throws PAPException {
String response = null;
if (policy == null || group == null) {
throw new PAPException("Null input policy="+policy+" group="+group);
}
try {
StdPAPPolicy location = new StdPAPPolicy(policy.getLocation());
response = copyFile(policy.getId(), group, location, policyType, requestID);
} catch (Exception e) {
String message = "Unable to PUT policy '" + policy.getId() + "', e:" + e;
LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + message, e);
throw new PAPException(message);
}
return response;
}
private String copyFile(String policyId, String group, StdPAPPolicy location, String clientScope, UUID requestID) throws PAPException {
String response = null;
// send the policy file to the PAP Servlet
PAPServices papService = new PAPServices();
try {
response = (String) papService.callPAP(location, new String[] {"groupId=" + group, "policyId="+policyId, "apiflag=api", "operation=post"}, requestID, clientScope);
} catch (Exception e) {
String message = "Unable to PUT policy '" + policyId + "', e:" + e;
LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + message, e);
throw new PAPException(message);
}
return response;
}
private boolean getValidation() {
// While Validating, extract the required values.
if (pushPolicyParameters.getPolicyName() != null
&& pushPolicyParameters.getPolicyName().contains(".")) {
policyName = pushPolicyParameters.getPolicyName().substring(pushPolicyParameters.getPolicyName().lastIndexOf('.') + 1,
pushPolicyParameters.getPolicyName().length());
policyScope = pushPolicyParameters.getPolicyName().substring(0,pushPolicyParameters.getPolicyName().lastIndexOf('.'));
LOGGER.info("Name is " + policyName + " scope is " + policyScope);
} else {
message = XACMLErrorConstants.ERROR_DATA_ISSUE + "No Policy Scope given.";
return false;
}
if (policyName==null||policyName.trim().isEmpty()){
message = XACMLErrorConstants.ERROR_DATA_ISSUE + "No Policy Name given.";
return false;
}
policyType = pushPolicyParameters.getPolicyType();
if(policyType== null || policyType.trim().isEmpty()){
message = XACMLErrorConstants.ERROR_DATA_ISSUE + "No PolicyType given.";
return false;
}
setClientScope();
if(clientScope==null){
return false;
}
pdpGroup = pushPolicyParameters.getPdpGroup();
if(pdpGroup==null || pdpGroup.trim().isEmpty()){
pdpGroup = "default";
}
LOGGER.debug("clientScope is " + clientScope);
LOGGER.debug("filePrefix is " + filePrefix);
return true;
}
private void setClientScope() {
if ("Firewall".equalsIgnoreCase(policyType)) {
clientScope = "ConfigFirewall";
filePrefix = "Config_FW_";
} else if ("Action".equalsIgnoreCase(policyType)) {
clientScope = "Action";
filePrefix = "Action_";
} else if ("Decision".equalsIgnoreCase(policyType)) {
clientScope = "Decision";
filePrefix = "Decision_";
} else if ("Base".equalsIgnoreCase(policyType)) {
clientScope = "Config";
filePrefix = "Config_";
} else if ("ClosedLoop_Fault".equalsIgnoreCase(policyType)) {
clientScope = "ConfigClosedLoop";
filePrefix = "Config_Fault_";
} else if ("ClosedLoop_PM".equalsIgnoreCase(policyType)) {
clientScope = "ConfigClosedLoop";
filePrefix = "Config_PM_";
} else if ("MicroService".equalsIgnoreCase(policyType)) {
clientScope = "ConfigMS";
filePrefix = "Config_MS_";
} else if ("BRMS_RAW".equalsIgnoreCase(policyType)) {
clientScope = "ConfigBrmsRaw";
filePrefix = "Config_BRMS_Raw_";
} else if ("BRMS_PARAM".equalsIgnoreCase(policyType)) {
clientScope = "ConfigBrmsParam";
filePrefix = "Config_BRMS_Param_";
} else {
clientScope = null;
message = XACMLErrorConstants.ERROR_DATA_ISSUE + policyType
+ " is not a valid Policy Type.";
}
}
public String getResult() {
return pushResult;
}
public HttpStatus getResponseCode() {
return status;
}
}
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