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Openscoring.java
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Openscoring.java
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/*
* Copyright (c) 2014 Villu Ruusmann
*
* This file is part of Openscoring
*
* Openscoring is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Openscoring is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Openscoring. If not, see <http://www.gnu.org/licenses/>.
*/
package org.openscoring.service;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.List;
import javax.xml.validation.Schema;
import com.fasterxml.jackson.jakarta.rs.json.JacksonJsonProvider;
import com.typesafe.config.Config;
import com.typesafe.config.ConfigFactory;
import jakarta.xml.bind.ValidationEvent;
import jakarta.xml.bind.ValidationEventHandler;
import org.dmg.pmml.Visitor;
import org.glassfish.hk2.utilities.Binder;
import org.glassfish.hk2.utilities.binding.AbstractBinder;
import org.glassfish.jersey.media.multipart.MultiPartFeature;
import org.glassfish.jersey.message.DeflateEncoder;
import org.glassfish.jersey.message.GZipEncoder;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.server.filter.EncodingFilter;
import org.glassfish.jersey.server.filter.HttpMethodOverrideFilter;
import org.glassfish.jersey.server.filter.RolesAllowedDynamicFeature;
import org.jpmml.evaluator.LoadingModelEvaluatorBuilder;
import org.jpmml.evaluator.ModelEvaluatorFactory;
import org.jpmml.evaluator.OutputFilters;
import org.jpmml.evaluator.ResultMapper;
import org.jpmml.evaluator.ValueFactoryFactory;
import org.jpmml.model.JAXBUtil;
import org.jpmml.model.visitors.VisitorBattery;
import org.openscoring.common.ModelResponse;
import org.openscoring.common.providers.ObjectMapperProvider;
import org.openscoring.service.filters.ApplicationHeaderFilter;
import org.openscoring.service.providers.ModelProvider;
import org.openscoring.service.providers.ModelRefConverterProvider;
import org.openscoring.service.providers.TableProvider;
import org.xml.sax.SAXException;
public class Openscoring extends ResourceConfig {
private Config config = null;
private ModelRegistry modelRegistry = null;
private LoadingModelEvaluatorBuilder loadingModelEvaluatorBuilder = null;
public Openscoring(){
Config config = ConfigFactory.load();
setConfig(config);
Binder configBinder = new AbstractBinder(){
@Override
public void configure(){
bind(config).to(Config.class).named("openscoring");
}
};
register(configBinder);
ModelRegistry modelRegistry = createModelRegistry(config);
setModelRegistry(modelRegistry);
Binder modelRegistryBinder = new AbstractBinder(){
@Override
public void configure(){
bind(modelRegistry).to(ModelRegistry.class).named("openscoring");
}
};
register(modelRegistryBinder);
LoadingModelEvaluatorBuilder loadingModelEvaluatorBuilder = createLoadingModelEvaluatorBuilder(config);
setLoadingModelEvaluatorBuilder(loadingModelEvaluatorBuilder);
Binder loadingModelEvaluatorBuilderBinder = new AbstractBinder(){
@Override
public void configure(){
bind(loadingModelEvaluatorBuilder).to(LoadingModelEvaluatorBuilder.class);
}
};
register(loadingModelEvaluatorBuilderBinder);
Config applicationConfig = config.getConfig("application");
register(ModelResource.class);
// Convert path variables to ModelRef objects
register(loadClass(ModelRefConverterProvider.class, applicationConfig));
// PMML support
register(loadClass(ModelProvider.class, applicationConfig));
// JSON support
register(JacksonJsonProvider.class);
register(ObjectMapperProvider.class);
// CSV support
register(loadClass(TableProvider.class, applicationConfig));
// Convert exceptions to JSON objects
register(WebApplicationExceptionMapper.class);
// Permit the HTTP POST method to be changed to HTTP PUT or DELETE methods
register(HttpMethodOverrideFilter.class);
// File upload support
register(MultiPartFeature.class);
// Security support
register(RolesAllowedDynamicFeature.class);
// GZip and Deflate encoding support
register(EncodingFilter.class);
register(GZipEncoder.class);
register(DeflateEncoder.class);
// Application identification
register(ApplicationHeaderFilter.class);
List<String> componentClassNames = applicationConfig.getStringList("componentClasses");
for(String componentClassName : componentClassNames){
Class<?> clazz = loadClass(Object.class, componentClassName);
register(clazz);
}
}
public Config getConfig(){
return this.config;
}
private void setConfig(Config config){
this.config = config;
}
public ModelRegistry getModelRegistry(){
return this.modelRegistry;
}
private void setModelRegistry(ModelRegistry modelRegistry){
this.modelRegistry = modelRegistry;
}
public LoadingModelEvaluatorBuilder getLoadingModelEvaluatorBuilder(){
return this.loadingModelEvaluatorBuilder;
}
private void setLoadingModelEvaluatorBuilder(LoadingModelEvaluatorBuilder loadingModelEvaluatorBuilder){
this.loadingModelEvaluatorBuilder = loadingModelEvaluatorBuilder;
}
static
private ModelRegistry createModelRegistry(Config config){
ModelRegistry modelRegistry = new ModelRegistry();
return modelRegistry;
}
static
private LoadingModelEvaluatorBuilder createLoadingModelEvaluatorBuilder(Config config){
Config modelEvaluatorBuilderConfig = config.getConfig("modelEvaluatorBuilder");
LoadingModelEvaluatorBuilder modelEvaluatorBuilder = new LoadingModelEvaluatorBuilder();
Class<? extends ModelEvaluatorFactory> modelEvaluatorFactoryClazz = loadClass(ModelEvaluatorFactory.class, modelEvaluatorBuilderConfig);
modelEvaluatorBuilder.setModelEvaluatorFactory(newInstance(modelEvaluatorFactoryClazz));
Class<? extends ValueFactoryFactory> valueFactoryFactoryClazz = loadClass(ValueFactoryFactory.class, modelEvaluatorBuilderConfig);
modelEvaluatorBuilder.setValueFactoryFactory(newInstance(valueFactoryFactoryClazz));
modelEvaluatorBuilder.setOutputFilter(OutputFilters.KEEP_FINAL_RESULTS);
// Jackson does not support the JSON serialization of <code>null</code> map keys
ResultMapper resultMapper = new ResultMapper(){
@Override
public String apply(String name){
// A "phantom" default target field
if(name == null){
return ModelResponse.DEFAULT_TARGET_NAME;
}
return name;
}
};
modelEvaluatorBuilder.setResultMapper(resultMapper);
boolean validate = modelEvaluatorBuilderConfig.getBoolean("validate");
if(validate){
Schema schema;
try {
schema = JAXBUtil.getSchema();
} catch(SAXException | IOException e){
throw new RuntimeException(e);
}
modelEvaluatorBuilder
.setSchema(schema)
.setValidationEventHandler(new SimpleValidationEventHandler());
}
boolean locatable = modelEvaluatorBuilderConfig.getBoolean("locatable");
modelEvaluatorBuilder.setLocatable(locatable);
VisitorBattery visitors = new VisitorBattery();
List<String> visitorClassNames = modelEvaluatorBuilderConfig.getStringList("visitorClasses");
for(String visitorClassName : visitorClassNames){
Class<?> clazz = loadClass(Object.class, visitorClassName);
if((Visitor.class).isAssignableFrom(clazz)){
Class<? extends Visitor> visitorClazz = clazz.asSubclass(Visitor.class);
visitors.add(visitorClazz);
} else
if((VisitorBattery.class).isAssignableFrom(clazz)){
Class<? extends VisitorBattery> visitorBatteryClazz = clazz.asSubclass(VisitorBattery.class);
VisitorBattery visitorBattery = newInstance(visitorBatteryClazz);
visitors.addAll(visitorBattery);
} else
{
throw new IllegalArgumentException(new ClassCastException(clazz.toString()));
}
}
modelEvaluatorBuilder.setVisitors(visitors);
return modelEvaluatorBuilder;
}
static
protected <E> Class<? extends E> loadClass(Class<? extends E> superClazz, Config config){
String path = superClazz.getSimpleName();
if(path.length() > 0){
path = path.substring(0, 1).toLowerCase() + path.substring(1);
}
path += "Class";
return loadClass(superClazz, config.getString(path));
}
static
protected <E> Class<? extends E> loadClass(Class<? extends E> superClazz, String name){
try {
Class<?> clazz = Class.forName(name);
return clazz.asSubclass(superClazz);
} catch(ClassCastException cce){
throw new IllegalArgumentException(cce);
} catch(ClassNotFoundException cnfe){
throw new IllegalArgumentException(cnfe);
}
}
static
protected <E> E newInstance(Class<? extends E> clazz){
try {
try {
Method method = clazz.getDeclaredMethod("newInstance");
Object result = method.invoke(null);
return clazz.cast(result);
} catch(NoSuchMethodException nsme){
Constructor<? extends E> constructor = clazz.getDeclaredConstructor();
return constructor.newInstance();
}
} catch(ReflectiveOperationException roe){
throw new IllegalArgumentException(roe);
}
}
static
private class SimpleValidationEventHandler implements ValidationEventHandler {
@Override
public boolean handleEvent(ValidationEvent event){
int severity = event.getSeverity();
switch(severity){
case ValidationEvent.ERROR:
case ValidationEvent.FATAL_ERROR:
return false;
default:
return true;
}
}
}
}