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/*
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* Copyright (C) 2020 Nokia. 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.onap.dcae.restapi;
import com.networknt.schema.JsonSchema;
import org.onap.dcae.ApplicationSettings;
import org.onap.dcae.common.model.VesEvent;
/**
* This class is using ApplicationSetting and SchemaValidator to validate VES event.
*
* @author Zebek
*/
public class EventValidator {
private final SchemaValidator schemaValidator;
private final ApplicationSettings applicationSettings;
public EventValidator(ApplicationSettings applicationSettings) {
this(applicationSettings, new SchemaValidator());
}
EventValidator(ApplicationSettings applicationSettings, SchemaValidator schemaValidator) {
this.applicationSettings = applicationSettings;
this.schemaValidator = schemaValidator;
}
/**
* This method is validating given event using schema adn throws exception if event is not valid
*
* @param vesEvent event that will be validate
* @param type expected type of event
* @param version json schema version that will be used
* @throws EventValidatorException when event is not valid or have wrong type
*/
public void validate(VesEvent vesEvent, String type, String version) throws EventValidatorException {
if (applicationSettings.eventSchemaValidationEnabled()) {
doValidation(vesEvent, type, version);
}
}
private void doValidation(VesEvent vesEvent, String type, String version) throws EventValidatorException {
if (vesEvent.hasType(type)) {
if (!isEventMatchToSchema(vesEvent, applicationSettings.jsonSchema(version))) {
throw new EventValidatorException(ApiException.SCHEMA_VALIDATION_FAILED);
}
} else {
throw new EventValidatorException(ApiException.INVALID_JSON_INPUT);
}
}
private boolean isEventMatchToSchema(VesEvent vesEvent, JsonSchema schema) {
return schemaValidator.conformsToSchema(vesEvent.asJsonObject(), schema);
}
}
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