de.terrestris.shoguncore.service.ModelDescriptionService Maven / Gradle / Ivy
package de.terrestris.shoguncore.service;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.module.jsonSchema.JsonSchema;
import com.fasterxml.jackson.module.jsonSchema.JsonSchemaGenerator;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.io.IOException;
import java.util.List;
import static org.apache.logging.log4j.LogManager.getLogger;
/**
* Service class to describe classes model.
*
* terrestris GmbH & Co. KG
*
* @author Kai Volland
* @date 04.09.2017
*/
@Service("modelDescriptionService")
public class ModelDescriptionService {
/**
* The LOGGER instance (that will be available in all subclasses)
*/
protected static final Logger logger = getLogger(ModelDescriptionService.class);
/**
*
*/
@Autowired
protected ObjectMapper objectMapper;
@Resource
@Qualifier("describeModelSearchPackages")
private List describeModelSearchPackages;
public JsonSchema getJsonSchema(String className) throws IOException {
Class foundClass = null;
for (String searchPackage : describeModelSearchPackages) {
logger.debug(String.format("Search className %s in package %s.", className, searchPackage));
try {
boolean wasNull = foundClass == null;
foundClass = Class.forName(searchPackage + "." + className);
if (!wasNull) {
logger.error(String.format("Modelname %s exists in multiple packages! Last one will win.", className));
}
} catch (ClassNotFoundException e) {
//not in this package, try another
}
}
if (foundClass == null) {
logger.warn(String.format("No class found for describing modelname %s", className));
return null;
}
JsonSchemaGenerator schemaGen = new JsonSchemaGenerator(objectMapper);
JsonSchema schema = schemaGen.generateSchema(foundClass);
return schema;
}
}