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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2018-2021 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.apps.controlloop.feature.management;
import java.util.stream.Stream;
import org.onap.policy.controlloop.drl.legacy.ControlLoopParams;
import org.onap.policy.drools.features.PolicyEngineFeatureApi;
import org.onap.policy.drools.system.PolicyController;
import org.onap.policy.drools.system.PolicyControllerConstants;
/**
* Control Loop Management Feature.
*/
public class ControlLoopManagementFeature implements PolicyEngineFeatureApi {
private static final String FEATURE_NAME = "controlloop-management";
private static final int SEQNO = 1000;
/**
* Factory for various objects. May be overridden by junit tests.
*/
private static Factory factory = new Factory();
/**
* retrieves control loops.
*
* @param controllerName controller name.
* @param sessionName session name.
* @return control loops.
*/
public static Stream<ControlLoopParams> controlLoops(String controllerName, String sessionName) {
PolicyController controller = factory.getController(controllerName);
if (controller == null) {
throw new IllegalArgumentException("Invalid Controller Name");
}
if (controller.getDrools().getSessionNames().stream().filter(sessionName::equals).count() <= 0) {
throw new IllegalArgumentException("Invalid Session Name");
}
return controller.getDrools()
.facts(sessionName, ControlLoopParams.class.getName(), false)
.stream()
.filter(ControlLoopParams.class::isInstance)
.map(ControlLoopParams.class::cast);
}
/**
* retrieves a control loop.
*
* @param controllerName controller name.
* @param sessionName session name.
* @param controlLoopName control loop name
*
* @return control loops.
*/
public static ControlLoopParams controlLoop(String controllerName, String sessionName, String controlLoopName) {
return controlLoops(controllerName, sessionName)
.filter(c -> c.getClosedLoopControlName().equals(controlLoopName))
.findFirst()
.orElse(null);
}
/**
* {@inheritDoc}.
*/
@Override
public int getSequenceNumber() {
return SEQNO;
}
/**
* {@inheritDoc}.
*/
@Override
public String getName() {
return FEATURE_NAME;
}
/**
* Factory that can be overridden by junit tests.
*/
public static class Factory {
public PolicyController getController(String controllerName) {
return PolicyControllerConstants.getFactory().get(controllerName);
}
}
}
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