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/*
* ============LICENSE_START=======================================================
* policy-management
* ================================================================================
* Copyright (C) 2017-2018 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.controller.internal;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.onap.policy.common.endpoints.event.comm.TopicSink;
import org.onap.policy.drools.controller.DroolsController;
import org.onap.policy.drools.core.PolicyContainer;
import org.onap.policy.drools.protocol.coders.TopicCoderFilterConfiguration;
/**
* no-op Drools Controller.
*/
public class NullDroolsController implements DroolsController {
@Override
public boolean start() {
return false;
}
@Override
public boolean stop() {
return false;
}
@Override
public void shutdown() {
return;
}
@Override
public void halt() {
return;
}
@Override
public boolean isAlive() {
return false;
}
@Override
public boolean lock() {
return false;
}
@Override
public boolean unlock() {
return false;
}
@Override
public boolean isLocked() {
return false;
}
@Override
public String getGroupId() {
return NO_GROUP_ID;
}
@Override
public String getArtifactId() {
return NO_ARTIFACT_ID;
}
@Override
public String getVersion() {
return NO_VERSION;
}
@Override
public List<String> getSessionNames() {
return new ArrayList<>();
}
@Override
public List<String> getCanonicalSessionNames() {
return new ArrayList<>();
}
@Override
public boolean offer(String topic, String event) {
return false;
}
@Override
public boolean deliver(TopicSink sink, Object event) {
throw new IllegalStateException(makeInvokeMsg());
}
@Override
public Object[] getRecentSourceEvents() {
return new String[0];
}
@Override
public PolicyContainer getContainer() {
return null;
}
@Override
public String[] getRecentSinkEvents() {
return new String[0];
}
@Override
public boolean ownsCoder(Class<? extends Object> coderClass, int modelHash) {
throw new IllegalStateException(makeInvokeMsg());
}
@Override
public Class<?> fetchModelClass(String className) {
throw new IllegalArgumentException(makeInvokeMsg());
}
@Override
public boolean isBrained() {
return false;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("NullDroolsController []");
return builder.toString();
}
@Override
public void updateToVersion(String newGroupId, String newArtifactId, String newVersion,
List<TopicCoderFilterConfiguration> decoderConfigurations,
List<TopicCoderFilterConfiguration> encoderConfigurations)
throws LinkageError {
throw new IllegalArgumentException(makeInvokeMsg());
}
@Override
public Map<String, Integer> factClassNames(String sessionName) {
return new HashMap<>();
}
@Override
public long factCount(String sessionName) {
return 0;
}
@Override
public List<Object> facts(String sessionName, String className, boolean delete) {
return new ArrayList<>();
}
@Override
public List<Object> factQuery(String sessionName, String queryName,
String queriedEntity,
boolean delete, Object... queryParams) {
return new ArrayList<>();
}
private String makeInvokeMsg() {
return this.getClass().getCanonicalName() + " invoked";
}
}
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