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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.pdpx.main.rest.provider;
import com.att.research.xacml.api.Response;
import com.att.research.xacml.api.Result;
import org.apache.commons.lang3.tuple.Pair;
import org.onap.policy.models.decisions.concepts.DecisionException;
import org.onap.policy.models.decisions.concepts.DecisionRequest;
import org.onap.policy.models.decisions.concepts.DecisionResponse;
import org.onap.policy.pdp.xacml.application.common.XacmlApplicationServiceProvider;
import org.onap.policy.pdpx.main.rest.XacmlPdpApplicationManager;
import org.onap.policy.pdpx.main.rest.XacmlPdpStatisticsManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DecisionProvider {
private static final Logger LOGGER = LoggerFactory.getLogger(DecisionProvider.class);
/**
* Retrieves the policy decision for the specified parameters.
* @param body
*
* @return the Decision object
*/
public DecisionResponse fetchDecision(DecisionRequest request) {
LOGGER.debug("Fetching decision {}", request);
//
// Find application for this decision
//
XacmlApplicationServiceProvider application = findApplication(request);
//
// Found application for action
//
Pair<DecisionResponse, Response> decision;
try {
decision = application.makeDecision(request);
} catch (Exception e) {
LOGGER.error("makeDecision failed", e);
throw e;
}
//
// Calculate statistics
//
this.calculateStatistic(decision.getValue());
//
// Return the decision
//
return decision.getKey();
}
private XacmlApplicationServiceProvider findApplication(DecisionRequest request) {
XacmlApplicationServiceProvider application = XacmlPdpApplicationManager.findApplication(request);
if (application != null) {
return application;
}
throw new DecisionException(javax.ws.rs.core.Response.Status.BAD_REQUEST,
"No application for action " + request.getAction());
}
private void calculateStatistic(Response xacmlResponse) {
for (Result result : xacmlResponse.getResults()) {
switch (result.getDecision()) {
case PERMIT:
XacmlPdpStatisticsManager.updatePermitDecisionsCount();
break;
case DENY:
XacmlPdpStatisticsManager.updateDenyDecisionsCount();
break;
case INDETERMINATE:
case INDETERMINATE_DENY:
case INDETERMINATE_DENYPERMIT:
case INDETERMINATE_PERMIT:
XacmlPdpStatisticsManager.updateIndeterminantDecisionsCount();
break;
case NOTAPPLICABLE:
XacmlPdpStatisticsManager.updateNotApplicableDecisionsCount();
break;
default:
break;
}
}
}
}
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