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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 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.openecomp.sdc.vendorsoftwareproduct.services.schemagenerator;
import freemarker.cache.StringTemplateLoader;
import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateExceptionHandler;
import org.openecomp.core.utilities.applicationconfig.ApplicationConfig;
import org.openecomp.core.utilities.applicationconfig.ApplicationConfigFactory;
import org.openecomp.core.utilities.applicationconfig.type.ConfigurationData;
import org.openecomp.sdc.common.errors.CoreException;
import org.openecomp.sdc.common.errors.ErrorCategory;
import org.openecomp.sdc.common.errors.ErrorCode;
import org.openecomp.sdc.vendorsoftwareproduct.types.composition.CompositionEntityType;
import org.openecomp.sdc.vendorsoftwareproduct.types.schemagenerator.SchemaTemplateContext;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
public class SchemaGeneratorConfig {
public static final String SCHEMA_GENERATOR_INITIALIZATION_ERROR =
"SCHEMA_GENERATOR_INITIALIZATION_ERROR";
public static final String SCHEMA_GENERATOR_INITIALIZATION_ERROR_MSG =
"Error occurred while loading questionnaire schema schemaTemplates";
private static final String CONFIGURATION_NAMESPACE = "vsp.schemaTemplates";
private static Map<SchemaTemplateId, SchemaTemplate> schemaTemplates = new HashMap<>();
private static ApplicationConfig applicationConfig =
ApplicationConfigFactory.getInstance().createInterface();
private static Configuration configuration = new Configuration(Configuration.VERSION_2_3_23);
private static StringTemplateLoader stringLoader = new StringTemplateLoader();
static {
configuration.setClassLoaderForTemplateLoading(SchemaGenerator.class.getClassLoader(),
File.pathSeparator);
configuration.setDefaultEncoding("UTF-8");
configuration.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER);
configuration.setLogTemplateExceptions(true);
configuration.setTemplateLoader(stringLoader);
}
public static void insertSchemaTemplate(SchemaTemplateContext schemaTemplateContext,
CompositionEntityType entityType,
String schemaTemplateString) {
applicationConfig.insertValue(CONFIGURATION_NAMESPACE,
new SchemaTemplateId(schemaTemplateContext, entityType).toString(), schemaTemplateString);
}
/**
* Gets schema template.
*
* @param schemaTemplateContext the schema template context
* @param entityType the entity type
* @return the schema template
*/
public static Template getSchemaTemplate(SchemaTemplateContext schemaTemplateContext,
CompositionEntityType entityType) {
SchemaTemplateId id = new SchemaTemplateId(schemaTemplateContext, entityType);
ConfigurationData configurationData =
applicationConfig.getConfigurationData(CONFIGURATION_NAMESPACE, id.toString());
SchemaTemplate schemaTemplate = schemaTemplates.get(id);
if (schemaTemplate == null || schemaTemplate.timestamp != configurationData.getTimeStamp()) {
stringLoader.putTemplate(id.toString(), configurationData.getValue());
Template template;
try {
template = configuration.getTemplate(id.toString());
} catch (IOException exception) {
throw new CoreException(
new ErrorCode.ErrorCodeBuilder().withCategory(ErrorCategory.APPLICATION)
.withId(SCHEMA_GENERATOR_INITIALIZATION_ERROR)
.withMessage(SCHEMA_GENERATOR_INITIALIZATION_ERROR_MSG).build(), exception);
}
schemaTemplate = new SchemaTemplate(template, configurationData.getTimeStamp());
schemaTemplates.put(id, schemaTemplate);
}
return schemaTemplate.template;
}
private static class SchemaTemplateId {
private SchemaTemplateContext context;
private CompositionEntityType entityType;
public SchemaTemplateId(SchemaTemplateContext context, CompositionEntityType entityType) {
this.context = context;
this.entityType = entityType;
}
@Override
public String toString() {
return context + "." + entityType;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
SchemaTemplateId that = (SchemaTemplateId) obj;
if (entityType != that.entityType) {
return false;
}
if (context != that.context) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result = entityType != null ? entityType.hashCode() : 0;
result = 31 * result + (context != null ? context.hashCode() : 0);
return result;
}
}
private static class SchemaTemplate {
private Template template;
private long timestamp;
public SchemaTemplate(Template template, long timestamp) {
this.template = template;
this.timestamp = timestamp;
}
}
}
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