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/*-
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* 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.xacml.pdp.application.guard;
import com.att.research.xacml.api.Request;
import com.att.research.xacml.api.Response;
import com.google.common.collect.Lists;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import oasis.names.tc.xacml._3_0.core.schema.wd_17.PolicyType;
import org.onap.policy.models.decisions.concepts.DecisionRequest;
import org.onap.policy.models.decisions.concepts.DecisionResponse;
import org.onap.policy.pdp.xacml.application.common.ToscaPolicyConversionException;
import org.onap.policy.pdp.xacml.application.common.std.StdMetadataTranslator;
import org.onap.policy.pdp.xacml.application.common.std.StdXacmlApplicationServiceProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class implements the onap.policies.controlloop.Guard policy implementations.
*
* @author pameladragosh
*
*/
public class GuardPdpApplication extends StdXacmlApplicationServiceProvider {
private static final Logger LOGGER = LoggerFactory.getLogger(GuardPdpApplication.class);
private static final String STRING_VERSION100 = "1.0.0";
private Map<String, String> supportedPolicyTypes = new HashMap<>();
private StdMetadataTranslator translator = new StdMetadataTranslator();
/** Constructor.
*
*/
public GuardPdpApplication() {
this.supportedPolicyTypes.put("onap.policies.controlloop.guard.FrequencyLimiter", STRING_VERSION100);
this.supportedPolicyTypes.put("onap.policies.controlloop.guard.MinMax", STRING_VERSION100);
}
@Override
public String applicationName() {
return "Guard Application";
}
@Override
public List<String> actionDecisionsSupported() {
return Arrays.asList("guard");
}
@Override
public List<String> supportedPolicyTypes() {
return Lists.newArrayList(supportedPolicyTypes.keySet());
}
@Override
public boolean canSupportPolicyType(String policyType, String policyTypeVersion) {
//
// For the time being, restrict this if the version isn't known.
// Could be too difficult to support changing of versions dynamically.
//
if (! this.supportedPolicyTypes.containsKey(policyType)) {
return false;
}
//
// Must match version exactly
//
return this.supportedPolicyTypes.get(policyType).equals(policyTypeVersion);
}
@Override
public void loadPolicies(Map<String, Object> toscaPolicies) {
try {
//
// Convert the policies first
//
List<PolicyType> listPolicies = translator.scanAndConvertPolicies(toscaPolicies);
if (listPolicies.isEmpty()) {
throw new ToscaPolicyConversionException("Converted 0 policies");
}
//
// TODO update properties, save to disk, etc.
//
} catch (ToscaPolicyConversionException e) {
LOGGER.error("Failed to loadPolicies {}", e);
}
}
@Override
public DecisionResponse makeDecision(DecisionRequest request) {
//
// Convert to a XacmlRequest
//
Request xacmlRequest = translator.convertRequest(request);
//
// Now get a decision
//
Response xacmlResponse = this.xacmlDecision(xacmlRequest);
//
// Convert to a DecisionResponse
//
return translator.convertResponse(xacmlResponse);
}
}
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