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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2016-2018 Ericsson. All rights reserved.
* Modifications Copyright (C) 2021 Bell Canada. 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.apex.core.engine.monitoring;
import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
import org.onap.policy.apex.model.eventmodel.concepts.AxField;
import org.slf4j.ext.XLogger;
import org.slf4j.ext.XLoggerFactory;
/**
* This class is used to monitor event parameter gets and sets.
*
* @author Liam Fallon (liam.fallon@ericsson.com)
*/
public class EventMonitor {
// Logger for this class
private static final XLogger LOGGER = XLoggerFactory.getXLogger(EventMonitor.class);
/**
* Monitor get on an event parameter.
*
* @param eventParameter The event parameter to monitor
* @param value the value of the event parameter
* @param userArtifactStack the keys of the artifacts using the event at the moment
*/
public void monitorGet(final AxField eventParameter, final Object value, final AxConcept[] userArtifactStack) {
var monitorGetString = monitor("GET", userArtifactStack, eventParameter, value);
LOGGER.trace(monitorGetString);
}
/**
* Monitor set on an event parameter.
*
* @param eventParameter The event parameter to monitor
* @param value the value of the event parameter
* @param userArtifactStack the keys of the artifacts using the event at the moment
*/
public void monitorSet(final AxField eventParameter, final Object value, final AxConcept[] userArtifactStack) {
var monitorSetString = monitor("SET", userArtifactStack, eventParameter, value);
LOGGER.trace(monitorSetString);
}
/**
* Monitor remove on an event parameter.
*
* @param eventParameter The event parameter to monitor
* @param removedValue the value of the event parameter
* @param userArtifactStack the keys of the artifacts using the event at the moment
*/
public void monitorRemove(final AxField eventParameter, final Object removedValue,
final AxConcept[] userArtifactStack) {
var monitorRemoveString = monitor("REMOVE", userArtifactStack, eventParameter, removedValue);
LOGGER.trace(monitorRemoveString);
}
/**
* Monitor the user artifact stack.
*
* @param preamble the preamble
* @param userArtifactStack The user stack to print
* @param eventParameter The event parameter that we are monitoring
* @param value The value of the target object
* @return the string
*/
private String monitor(final String preamble, final AxConcept[] userArtifactStack, final AxField eventParameter,
final Object value) {
final var builder = new StringBuilder();
builder.append(preamble);
builder.append(",[");
if (userArtifactStack != null) {
var first = true;
for (final AxConcept stackKey : userArtifactStack) {
if (first) {
first = false;
} else {
builder.append(',');
}
if (stackKey instanceof AxArtifactKey) {
builder.append(((AxArtifactKey) stackKey).getId());
} else if (stackKey instanceof AxReferenceKey) {
builder.append(((AxReferenceKey) stackKey).getId());
} else {
builder.append(stackKey.toString());
}
}
}
builder.append("],");
builder.append(eventParameter.toString());
builder.append("=");
builder.append(value);
return builder.toString();
}
}
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