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/*
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================
* Copyright (C) 2018 NOKIA 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.onap.pnfsimulator.simulator.validation;
import com.fasterxml.jackson.databind.JsonNode;
import com.github.fge.jackson.JsonLoader;
import com.github.fge.jsonschema.core.exceptions.ProcessingException;
import com.github.fge.jsonschema.core.report.LogLevel;
import com.github.fge.jsonschema.core.report.ProcessingMessage;
import com.github.fge.jsonschema.core.report.ProcessingReport;
import com.github.fge.jsonschema.main.JsonSchema;
import com.github.fge.jsonschema.main.JsonSchemaFactory;
import com.google.gson.JsonParser;
import java.io.FileReader;
import java.io.IOException;
import java.util.stream.Collectors;
import java.util.stream.StreamSupport;
public class JSONValidator {
public void validate(String data, String jsonSchemaPath)
throws ValidationException, ProcessingException, IOException {
String jsonSchema = readJsonSchemaAsString(jsonSchemaPath);
JsonNode jsonData = JsonLoader.fromString(data);
ProcessingReport report = createJsonSchema(jsonSchema).validate(jsonData);
if (!report.isSuccess()) {
throw new ValidationException(constructValidationErrors(report));
}
}
private String readJsonSchemaAsString(String schemaPath) throws IOException {
try (FileReader reader = new FileReader(schemaPath)) {
return new JsonParser().parse(reader).toString();
}
}
private JsonSchema createJsonSchema(String schema) throws ProcessingException, IOException {
return JsonSchemaFactory.byDefault().getJsonSchema(JsonLoader.fromString(schema));
}
private String constructValidationErrors(ProcessingReport report) {
return StreamSupport.stream(report.spliterator(), false)
.filter(entry -> entry.getLogLevel() == LogLevel.ERROR)
.map(ProcessingMessage::getMessage)
.collect(Collectors.joining("\n"));
}
}
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