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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.optimization;
import com.att.research.xacml.api.Request;
import com.att.research.xacml.api.Response;
import com.att.research.xacml.util.XACMLPolicyWriter;
import com.google.common.collect.Lists;
import java.io.IOException;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
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.XacmlPolicyUtils;
import org.onap.policy.pdp.xacml.application.common.std.StdMatchableTranslator;
import org.onap.policy.pdp.xacml.application.common.std.StdXacmlApplicationServiceProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class OptimizationPdpApplication extends StdXacmlApplicationServiceProvider {
private static final Logger LOGGER = LoggerFactory.getLogger(OptimizationPdpApplication.class);
private static final String STRING_VERSION100 = "1.0.0";
private StdMatchableTranslator translator = new StdMatchableTranslator();
private Map<String, String> supportedPolicyTypes = new HashMap<>();
/**
* Constructor.
*/
public OptimizationPdpApplication() {
this.supportedPolicyTypes.put("onap.policies.optimization.AffinityPolicy", STRING_VERSION100);
this.supportedPolicyTypes.put("onap.policies.optimization.DistancePolicy", STRING_VERSION100);
this.supportedPolicyTypes.put("onap.policies.optimization.HpaPolicy", STRING_VERSION100);
this.supportedPolicyTypes.put("onap.policies.optimization.OptimizationPolicy", STRING_VERSION100);
this.supportedPolicyTypes.put("onap.policies.optimization.PciPolicy", STRING_VERSION100);
this.supportedPolicyTypes.put("onap.policies.optimization.QueryPolicy", STRING_VERSION100);
this.supportedPolicyTypes.put("onap.policies.optimization.SubscriberPolicy", STRING_VERSION100);
this.supportedPolicyTypes.put("onap.policies.optimization.Vim_fit", STRING_VERSION100);
this.supportedPolicyTypes.put("onap.policies.optimization.VnfPolicy", STRING_VERSION100);
}
@Override
public String applicationName() {
return "Optimization Application";
}
@Override
public List<String> actionDecisionsSupported() {
return Arrays.asList("optimize");
}
@Override
public synchronized 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 synchronized 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");
}
//
// Create a copy of the properties object
//
Properties newProperties = this.getProperties();
//
// Iterate through the policies
//
for (PolicyType newPolicy : listPolicies) {
//
// Construct the filename
//
Path refPath = XacmlPolicyUtils.constructUniquePolicyFilename(newPolicy, this.getDataPath());
//
// Write the policy to disk
// Maybe check for an error
//
XACMLPolicyWriter.writePolicyFile(refPath, newPolicy);
//
// Add root policy to properties object
//
XacmlPolicyUtils.addRootPolicy(newProperties, refPath);
}
//
// Write the properties to disk
//
XacmlPolicyUtils.storeXacmlProperties(newProperties,
XacmlPolicyUtils.getPropertiesPath(this.getDataPath()));
//
// Reload the engine
//
this.createEngine(newProperties);
} catch (IOException | ToscaPolicyConversionException e) {
LOGGER.error("Failed to loadPolicies {}", e);
}
}
@Override
public synchronized 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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