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/*-
* ============LICENSE_START=======================================================
* ECOMP-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.openecomp.policy.pdp.rest.api.services;
import java.util.Collection;
import java.util.Map;
import java.util.Map.Entry;
import java.util.UUID;
import javax.json.Json;
import javax.json.JsonArrayBuilder;
import javax.json.JsonObject;
import javax.json.JsonObjectBuilder;
import org.openecomp.policy.api.DecisionRequestParameters;
import org.openecomp.policy.api.DecisionResponse;
import org.openecomp.policy.api.PolicyDecision;
import org.openecomp.policy.api.PolicyDecisionException;
import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
import org.openecomp.policy.common.logging.flexlogger.Logger;
import org.openecomp.policy.pdp.rest.api.models.PDPResponse;
import org.openecomp.policy.std.StdDecisionResponse;
import org.openecomp.policy.xacml.api.XACMLErrorConstants;
import org.springframework.http.HttpStatus;
public class GetDecisionService {
private static final Logger LOGGER = FlexLogger.getLogger(GetDecisionService.class.getName());
private DecisionResponse decisionResponse = null;
private HttpStatus status = HttpStatus.BAD_REQUEST;
private DecisionRequestParameters decisionRequestParameters = null;
private String message = null;
private String eCOMPComponentName = null;
private Map<String,String> decisionAttributes = null;
public GetDecisionService(
DecisionRequestParameters decisionRequestParameters,
String requestID) {
this.decisionRequestParameters = decisionRequestParameters;
if(decisionRequestParameters.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.decisionRequestParameters.setRequestID(requestUUID);
}
try{
run();
}catch(PolicyDecisionException e){
StdDecisionResponse decisionResponse = new StdDecisionResponse();
decisionResponse.setDecision(PolicyDecision.ERROR);
decisionResponse.setDetails(XACMLErrorConstants.ERROR_DATA_ISSUE + e);
this.decisionResponse = decisionResponse;
status = HttpStatus.BAD_REQUEST;
}
}
private void run() throws PolicyDecisionException{
// Get Validation.
if(!getValidation()){
LOGGER.error(message);
throw new PolicyDecisionException(message);
}
// Generate Request.
String modelString = getModel().toString();
LOGGER.debug("Generated JSON Request is: " + modelString);
// Process Result.
try {
PDPServices pdpServices = new PDPServices();
status = HttpStatus.OK;
decisionResponse = decisionResult(pdpServices.generateRequest(modelString, decisionRequestParameters.getRequestID(), false, true));
} catch (Exception e) {
LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + e);
status = HttpStatus.BAD_REQUEST;
throw new PolicyDecisionException(e);
}
}
private DecisionResponse decisionResult(
Collection<PDPResponse> generateRequest) {
StdDecisionResponse policyDecision = new StdDecisionResponse();
if (generateRequest == null) {
return policyDecision;
}
if (!generateRequest.isEmpty()) {
for (PDPResponse stdStatus : generateRequest) {
policyDecision.setDecision(stdStatus.getDecision());
policyDecision.setDetails(stdStatus.getDetails());
}
}
return policyDecision;
}
private JsonObject getModel() throws PolicyDecisionException{
JsonArrayBuilder resourceArray = Json.createArrayBuilder();
for (Entry<String,String> key : decisionAttributes.entrySet()) {
if (key.getKey().isEmpty()) {
String message = XACMLErrorConstants.ERROR_DATA_ISSUE + "Cannot have an Empty Key";
LOGGER.error(message);
throw new PolicyDecisionException(message);
}
JsonObjectBuilder resourceBuilder = Json.createObjectBuilder();
if (key.getValue().matches("[0-9]+")) {
if ((key.getKey().equals("ErrorCode")) || (key.getKey().equals("WorkStep"))) {
resourceBuilder.add("Value", key.getValue());
} else {
int val = Integer.parseInt(key.getValue());
resourceBuilder.add("Value", val);
}
} else {
resourceBuilder.add("Value", key.getValue());
}
resourceBuilder.add("AttributeId", key.getKey());
resourceArray.add(resourceBuilder);
}
return Json.createObjectBuilder()
.add("Request", Json.createObjectBuilder()
.add("AccessSubject", Json.createObjectBuilder()
.add("Attribute", Json.createObjectBuilder()
.add("Value", eCOMPComponentName)
.add("AttributeId", "ECOMPName")))
.add("Resource", Json.createObjectBuilder()
.add("Attribute", resourceArray))
.add("Action", Json.createObjectBuilder()
.add("Attribute", Json.createObjectBuilder()
.add("Value", "DECIDE")
.add("AttributeId", "urn:oasis:names:tc:xacml:1.0:action:action-id"))))
.build();
}
private boolean getValidation() {
if(decisionRequestParameters==null){
message = XACMLErrorConstants.ERROR_DATA_ISSUE + "No Decision Request Paramaters";
return false;
}
eCOMPComponentName = decisionRequestParameters.getECOMPComponentName();
decisionAttributes = decisionRequestParameters.getDecisionAttributes();
if (eCOMPComponentName == null || eCOMPComponentName.isEmpty()) {
message = XACMLErrorConstants.ERROR_DATA_ISSUE + "No eCOMPComponentName given : " + eCOMPComponentName;
return false;
}
if (decisionAttributes == null || decisionAttributes.isEmpty()) {
message = XACMLErrorConstants.ERROR_DATA_ISSUE + "No Decision Attributes Given. ";
return false;
}
return true;
}
public DecisionResponse getResult() {
return decisionResponse;
}
public HttpStatus getResponseCode() {
return status;
}
}
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