forked from community/device-mgt-core
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/*
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* Copyright (c) 2015 WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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*
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* WSO2 Inc. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.wso2.carbon.simple.policy.decision.point;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.wso2.carbon.device.mgt.common.DeviceIdentifier;
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import org.wso2.carbon.policy.mgt.common.*;
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import org.wso2.carbon.policy.mgt.core.PolicyManagerService;
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import org.wso2.carbon.simple.policy.decision.point.internal.PolicyDecisionPointDataHolder;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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public class SimpleEvaluationImpl implements SimpleEvaluation {
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private static final Log log = LogFactory.getLog(SimpleEvaluationImpl.class);
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//TODO : to revove the stale reference
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private PolicyManagerService policyManagerService;
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private List<Policy> policyList = new ArrayList<Policy>();
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// public SimpleEvaluationImpl() {
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// policyManagerService = PolicyDecisionPointDataHolder.getInstance().getPolicyManagerService();
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// }
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@Override
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public Policy getEffectivePolicy(DeviceIdentifier deviceIdentifier) throws PolicyEvaluationException {
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Policy policy = new Policy();
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PolicyAdministratorPoint policyAdministratorPoint;
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PolicyInformationPoint policyInformationPoint;
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policyManagerService = getPolicyManagerService();
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try {
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if (policyManagerService != null) {
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policyInformationPoint = policyManagerService.getPIP();
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PIPDevice pipDevice = policyInformationPoint.getDeviceData(deviceIdentifier);
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policyList = policyInformationPoint.getRelatedPolicies(pipDevice);
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policyAdministratorPoint = policyManagerService.getPAP();
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sortPolicies();
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if(!policyList.isEmpty()) {
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policy = policyList.get(0);
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} else {
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policyAdministratorPoint.removePolicyUsed(deviceIdentifier);
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return null;
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}
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//TODO : UNCOMMENT THE FOLLOWING CASE
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policyAdministratorPoint.setPolicyUsed(deviceIdentifier, policy);
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}
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} catch (PolicyManagementException e) {
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String msg = "Error occurred when retrieving the policy related data from policy management service.";
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log.error(msg, e);
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throw new PolicyEvaluationException(msg, e);
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}
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return policy;
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}
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@Override
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public void sortPolicies() throws PolicyEvaluationException {
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Collections.sort(policyList);
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}
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private PolicyManagerService getPolicyManagerService() {
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return PolicyDecisionPointDataHolder.getInstance().getPolicyManagerService();
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}
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}
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