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/*
* ============LICENSE_START=======================================================
* VES-OPENAPI-MANAGER
* ================================================================================
* Copyright (C) 2021 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.ves.openapi.manager.service.serialization;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
import com.fasterxml.jackson.dataformat.yaml.YAMLParser;
import lombok.extern.log4j.Log4j2;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.io.IOException;
import java.util.Collections;
import java.util.List;
/**
* VesEventsArtifactDeserializer - Deserializer of byte array of MultiDocument YAML to ObjectNodes
*/
@Log4j2
@Service
public class VesEventsArtifactDeserializer {
private static final String COULD_NOT_READ_ARTIFACT_CONTENT_MESSAGE = "Couldn't read artifact content";
private final ObjectMapper objectMapper;
/**
* Constructor of VesEventsArtifactDeserializer
* @param objectMapper ObjectMapper for YAML parsing
*/
@Autowired
public VesEventsArtifactDeserializer(ObjectMapper objectMapper) {
this.objectMapper = objectMapper;
}
/**
* Deserializes MultiDocument YAML given as byte array
* @param data MultiDocument YAML as byte array
* @return List of ObjectNodes, each Document is separate ObjectNode
*/
public List<ObjectNode> deserializeMultiDocumentYaml(byte[] data) {
List<ObjectNode> events = Collections.emptyList();
try {
YAMLParser yamlParser = new YAMLFactory().createParser(data);
events = objectMapper.readValues(yamlParser, ObjectNode.class).readAll();
} catch (IOException e) {
log.error(COULD_NOT_READ_ARTIFACT_CONTENT_MESSAGE, e);
}
return events;
}
}
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