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Shared base functionality for implementing engines for the 51Degrees Pipeline API
/* *********************************************************************
* This Original Work is copyright of 51 Degrees Mobile Experts Limited.
* Copyright 2023 51 Degrees Mobile Experts Limited, Davidson House,
* Forbury Square, Reading, Berkshire, United Kingdom RG1 3EU.
*
* This Original Work is licensed under the European Union Public Licence
* (EUPL) v.1.2 and is subject to its terms as set out below.
*
* If a copy of the EUPL was not distributed with this file, You can obtain
* one at https://opensource.org/licenses/EUPL-1.2.
*
* The 'Compatible Licences' set out in the Appendix to the EUPL (as may be
* amended by the European Commission) shall be deemed incompatible for
* the purposes of the Work and the provisions of the compatibility
* clause in Article 5 of the EUPL shall not apply.
*
* If using the Work as, or as part of, a network application, by
* including the attribution notice(s) required under Article 5 of the EUPL
* in the end user terms of the application under an appropriate heading,
* such notice(s) shall fulfill the requirements of that article.
* ********************************************************************* */
package fiftyone.pipeline.engines.services;
import fiftyone.pipeline.core.data.ElementPropertyMetaData;
import fiftyone.pipeline.engines.data.AspectData;
import fiftyone.pipeline.engines.data.AspectPropertyMetaData;
import fiftyone.pipeline.engines.flowelements.AspectEngine;
import fiftyone.pipeline.engines.flowelements.CloudAspectEngine;
import java.util.List;
import java.util.stream.Collectors;
import static fiftyone.pipeline.engines.Constants.MissingPropertyMessages;
import static fiftyone.pipeline.util.StringManipulation.stringJoin;
/**
* Default implementation of the {@link MissingPropertyService} interface.
* @see Specification
*/
public class MissingPropertyServiceDefault implements MissingPropertyService {
/**
* Singleton instance of the service.
*/
private static MissingPropertyServiceDefault missingPropertyService = null;
private static final Object lock = new Object();
/**
* Private constructor to prevent new copies
*/
private MissingPropertyServiceDefault() {
}
/**
* Get the singleton instance of the default missing property service.
*
* @return singleton service
*/
public static MissingPropertyService getInstance() {
if (missingPropertyService == null) {
synchronized (lock) {
if (missingPropertyService == null) {
missingPropertyService = new MissingPropertyServiceDefault();
}
}
}
return missingPropertyService;
}
@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
public MissingPropertyResult getMissingPropertyReason(
String propertyName,
AspectEngine engine) {
MissingPropertyReason reason = MissingPropertyReason.Unknown;
AspectPropertyMetaData property = null;
// We know the property has extends AspectPropertyMetaData as it
// is a constraint of the AspectEngine interface, so don't check this
// cast
for (Object currentPropertyObject : engine.getProperties()) {
AspectPropertyMetaData currentProperty =
(AspectPropertyMetaData)currentPropertyObject;
if (currentProperty.getName().equalsIgnoreCase(propertyName)) {
property = currentProperty;
break;
}
}
if (property != null) {
// Check if the property is available in the data file that is
// being used by the engine.
boolean containsDataTier = false;
for (String tier : property.getDataTiersWherePresent()) {
if (tier.equals(engine.getDataSourceTier())) {
containsDataTier = true;
break;
}
}
if (containsDataTier == false) {
reason = MissingPropertyReason.DataFileUpgradeRequired;
}
// Check if the property is excluded from the results.
else if (property.isAvailable() == false) {
reason = MissingPropertyReason.PropertyExcludedFromEngineConfiguration;
}
}
else {
if (CloudAspectEngine.class.isAssignableFrom(engine.getClass())) {
if (engine.getProperties().size() == 0) {
reason = MissingPropertyReason.ProductNotAccessibleWithResourceKey;
}
else {
reason = MissingPropertyReason.PropertyNotAccessibleWithResourceKey;
}
}
}
// Build the message string to return to the caller.
StringBuilder message = new StringBuilder();
message.append(String.format(
MissingPropertyMessages.PREFIX,
propertyName,
engine.getElementDataKey()));
switch (reason) {
case DataFileUpgradeRequired:
message.append(String.format(
MissingPropertyMessages.DATA_UPGRADE_REQUIRED,
stringJoin(
property.getDataTiersWherePresent(),
","),
engine.getClass().getSimpleName()));
break;
case PropertyExcludedFromEngineConfiguration:
message.append(MissingPropertyMessages.PROPERTY_EXCLUDED);
break;
case ProductNotAccessibleWithResourceKey:
message.append(String.format(
MissingPropertyMessages.PRODUCT_NOT_IN_CLOUD_RESOURCE,
engine.getElementDataKey()));
break;
case PropertyNotAccessibleWithResourceKey:
List available =
((List)engine.getProperties())
.stream().map(ElementPropertyMetaData::getName)
.collect(Collectors.toList());
message.append(String.format(
MissingPropertyMessages.PROPERTY_NOT_IN_CLOUD_RESOURCE,
engine.getElementDataKey(),
stringJoin(available, ", ")));
break;
case Unknown:
message.append(MissingPropertyMessages.UNKNOWN);
break;
default:
break;
}
return new MissingPropertyResult(reason, message.toString());
}
@Override
public MissingPropertyResult getMissingPropertyReason(
String propertyName,
List> engines) {
MissingPropertyResult result = null;
for (AspectEngine engine : engines) {
result = getMissingPropertyReason(propertyName, engine);
if (result.getReason() != MissingPropertyReason.Unknown) {
return result;
}
}
return result;
}
}