org.openecomp.sdc.be.servlets.RepresentationUtils.java Source code

Introduction

Here is the source code for org.openecomp.sdc.be.servlets.RepresentationUtils.java

Source

/*-
 * ============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.be.servlets;

import java.io.IOException;

import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.map.DeserializationConfig;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.SerializationConfig.Feature;
import org.codehaus.jackson.map.annotate.JsonSerialize;
import org.openecomp.sdc.be.config.BeEcompErrorManager;
import org.openecomp.sdc.be.model.ArtifactDefinition;
import org.openecomp.sdc.common.api.ArtifactGroupTypeEnum;
import org.openecomp.sdc.common.api.Constants;
import org.openecomp.sdc.common.config.EcompErrorName;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;

public class RepresentationUtils {

    private static Logger log = LoggerFactory.getLogger(RepresentationUtils.class.getName());

    public static class ResourceRep {

    }

    /**
     * Build Representation of given Object
     * 
     * @param elementToRepresent
     * @return
     * @throws IOException
     * @throws JsonGenerationException
     * @throws JsonMappingException
     */
    public static <T> Object toRepresentation(T elementToRepresent)
            throws IOException, JsonGenerationException, JsonMappingException {

        // return theResource;
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(Feature.FAIL_ON_EMPTY_BEANS, false);
        mapper.setSerializationInclusion(JsonSerialize.Inclusion.NON_NULL);
        return mapper.writeValueAsString(elementToRepresent);
    }

    public static <T> T fromRepresentation(String json, Class<T> clazz) {
        ObjectMapper mapper = new ObjectMapper();
        T object = null;
        mapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        mapper.configure(Feature.FAIL_ON_EMPTY_BEANS, false);
        mapper.setSerializationInclusion(JsonSerialize.Inclusion.NON_NULL);
        try {
            object = mapper.readValue(json, clazz);
        } catch (Exception e) {
            log.error("Error when parsing JSON of object of type {}", clazz.getSimpleName(), e);
        } // return null in case of exception

        return object;
    }

    public static ArtifactDefinition convertJsonToArtifactDefinition(String content,
            Class<ArtifactDefinition> clazz) {

        JsonObject jsonElement = new JsonObject();
        ArtifactDefinition resourceInfo = null;
        try {
            Gson gson = new Gson();
            jsonElement = gson.fromJson(content, jsonElement.getClass());
            JsonElement artifactGroupValue = jsonElement.get(Constants.ARTIFACT_GROUP_TYPE_FIELD);
            if (artifactGroupValue != null && !artifactGroupValue.isJsonNull()) {
                String groupValueUpper = artifactGroupValue.getAsString().toUpperCase();
                if (!ArtifactGroupTypeEnum.getAllTypes().contains(groupValueUpper)) {
                    StringBuilder sb = new StringBuilder();
                    for (String value : ArtifactGroupTypeEnum.getAllTypes()) {
                        sb.append(value).append(", ");
                    }
                    log.debug("artifactGroupType is {}. valid values are: {}", groupValueUpper, sb.toString());
                    return null;
                } else {
                    jsonElement.remove(Constants.ARTIFACT_GROUP_TYPE_FIELD);
                    jsonElement.addProperty(Constants.ARTIFACT_GROUP_TYPE_FIELD, groupValueUpper);
                }
            }
            String payload = null;
            JsonElement artifactPayload = jsonElement.get(Constants.ARTIFACT_PAYLOAD_DATA);
            if (artifactPayload != null && !artifactPayload.isJsonNull()) {
                payload = artifactPayload.getAsString();
            }
            jsonElement.remove(Constants.ARTIFACT_PAYLOAD_DATA);
            resourceInfo = gson.fromJson(jsonElement, clazz);
            resourceInfo.setPayloadData(payload);

        } catch (Exception e) {
            BeEcompErrorManager.getInstance().processEcompError(EcompErrorName.BeArtifactInformationInvalidError,
                    "Artifact Upload / Update");
            BeEcompErrorManager.getInstance().logBeArtifactInformationInvalidError("Artifact Upload / Update");
            log.debug("Failed to convert the content {} to object. {}",
                    content.substring(0, Math.min(50, content.length())), e);
        }

        return resourceInfo;
    }

}