/*
* Copyright (c) 2015 WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you 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.
*/
package org.wso2.carbon.simple.policy.decision.point;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.carbon.device.mgt.common.DeviceIdentifier;
import org.wso2.carbon.policy.mgt.common.*;
import org.wso2.carbon.policy.mgt.core.PolicyManagerService;
import org.wso2.carbon.simple.policy.decision.point.internal.PolicyDecisionPointDataHolder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class SimpleEvaluationImpl implements SimpleEvaluation {
private static final Log log = LogFactory.getLog(SimpleEvaluationImpl.class);
//TODO : to revove the stale reference
private PolicyManagerService policyManagerService;
private List<Policy> policyList = new ArrayList<Policy>();
// public SimpleEvaluationImpl() {
// policyManagerService = PolicyDecisionPointDataHolder.getInstance().getPolicyManagerService();
// }
@Override
public Policy getEffectivePolicy(DeviceIdentifier deviceIdentifier) throws PolicyEvaluationException {
Policy policy = new Policy();
PolicyAdministratorPoint policyAdministratorPoint;
PolicyInformationPoint policyInformationPoint;
policyManagerService = getPolicyManagerService();
try {
if (policyManagerService != null) {
policyInformationPoint = policyManagerService.getPIP();
PIPDevice pipDevice = policyInformationPoint.getDeviceData(deviceIdentifier);
policyList = policyInformationPoint.getRelatedPolicies(pipDevice);
sortPolicies();
if(!policyList.isEmpty()) {
policy = policyList.get(0);
} else {
return null;
}
//TODO : UNCOMMENT THE FOLLOWING CASE
// policyAdministratorPoint = policyManagerService.getPAP();
// policyAdministratorPoint.setPolicyUsed(deviceIdentifier, policy);
}
} catch (PolicyManagementException e) {
String msg = "Error occurred when retrieving the policy related data from policy management service.";
log.error(msg, e);
throw new PolicyEvaluationException(msg, e);
}
return policy;
}
@Override
public void sortPolicies() throws PolicyEvaluationException {
Collections.sort(policyList);
}
private PolicyManagerService getPolicyManagerService() {
return PolicyDecisionPointDataHolder.getInstance().getPolicyManagerService();
}
}