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/*
* Copyright © 2017-2018 AT&T Intellectual Property.
* Modifications Copyright © 2018 IBM.
*
* 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.
*/
package org.onap.ccsdk.config.generator.service;
import java.io.StringWriter;
import java.util.Iterator;
import java.util.List;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.Velocity;
import org.onap.ccsdk.config.data.adaptor.domain.ConfigResource;
import org.onap.ccsdk.config.data.adaptor.service.ConfigResourceService;
import org.onap.ccsdk.config.generator.data.ConfigGeneratorInfo;
import org.onap.ccsdk.config.generator.tool.CustomJsonNodeFactory;
import org.onap.ccsdk.config.model.utils.TransformationUtils;
import org.onap.ccsdk.sli.core.sli.SvcLogicException;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
public class ConfigGeneratorServiceImpl implements ConfigGeneratorService {
private static EELFLogger logger = EELFManager.getInstance().getLogger(ConfigGeneratorServiceImpl.class);
private static final String CLASS_NAME = "ConfigGeneratorServiceImpl";
private ConfigResourceService configResourceService;
public ConfigGeneratorServiceImpl(ConfigResourceService configResourceService) {
logger.info("{} Constuctor Initated...", CLASS_NAME);
this.configResourceService = configResourceService;
}
@Override
public ConfigGeneratorInfo generateConfiguration(ConfigGeneratorInfo configGeneratorInfo) throws SvcLogicException {
if (configGeneratorInfo != null && StringUtils.isNotBlank(configGeneratorInfo.getResourceId())
&& StringUtils.isNotBlank(configGeneratorInfo.getResourceType())
&& StringUtils.isNotBlank(configGeneratorInfo.getRecipeName())
&& StringUtils.isNotBlank(configGeneratorInfo.getTemplateName())
&& StringUtils.isNotBlank(configGeneratorInfo.getTemplateContent())) {
ConfigResource configResourceQuery = new ConfigResource();
configResourceQuery.setResourceId(configGeneratorInfo.getResourceId());
configResourceQuery.setResourceType(configGeneratorInfo.getResourceType());
configResourceQuery.setTemplateName(configGeneratorInfo.getTemplateName());
List<ConfigResource> configResourceList = configResourceService.getConfigResource(configResourceQuery);
if (CollectionUtils.isEmpty(configResourceList)) {
throw new SvcLogicException("No Config Resource found");
} else if (configResourceList.size() > 1) {
throw new SvcLogicException("More than one Config Resource found for specified parameter for"
+ " resourceId " + configGeneratorInfo.getResourceId() + ", resourceType "
+ configGeneratorInfo.getResourceType() + ", recipeName " + configGeneratorInfo.getRecipeName()
+ ", templateName " + configGeneratorInfo.getTemplateName());
}
ConfigResource configResource = configResourceList.get(0);
if (configResource != null && StringUtils.isNotBlank(configResource.getResourceData())) {
configGeneratorInfo.setResourceData(configResource.getResourceData());
logger.debug("Retrieve ConfigResource Data : ({})", configResource.getResourceData());
ConfigGeneratorInfo generatorInfo = generateConfiguration(configGeneratorInfo.getTemplateContent(),
configResource.getResourceData());
if (generatorInfo != null) {
configGeneratorInfo.setMashedData(generatorInfo.getMashedData());
}
} else {
throw new SvcLogicException(
"Failed to get the Resource Data for the Resource Id :" + configGeneratorInfo.getResourceId()
+ " of template :" + configGeneratorInfo.getTemplateName());
}
}
return configGeneratorInfo;
}
@Override
public ConfigGeneratorInfo generateConfiguration(String templateContent, String templateData)
throws SvcLogicException {
return generateConfiguration(templateContent, templateData, true);
}
@Override
public ConfigGeneratorInfo generateConfiguration(String templateContent, String templateData, boolean ignoreNull)
throws SvcLogicException {
ConfigGeneratorInfo configGeneratorInfo = null;
try {
if (StringUtils.isNotBlank(templateContent) && StringUtils.isNotBlank(templateData)) {
configGeneratorInfo = new ConfigGeneratorInfo();
Velocity.init();
ObjectMapper mapper = new ObjectMapper();
CustomJsonNodeFactory f = new CustomJsonNodeFactory();
mapper.setNodeFactory(f);
JsonNode jsonObj = mapper.readValue(templateData, JsonNode.class);
if (ignoreNull) {
TransformationUtils.removeJsonNullNode(jsonObj);
}
VelocityContext context = new VelocityContext();
context.put("StringUtils", org.apache.commons.lang3.StringUtils.class);
context.put("BooleanUtils", org.apache.commons.lang3.BooleanUtils.class);
Iterator<String> ii = jsonObj.fieldNames();
while (ii.hasNext()) {
String key = ii.next();
JsonNode node = jsonObj.get(key);
logger.info("Adding key ({}) with value ({})", key, node);
context.put(key, node);
}
StringWriter writer = new StringWriter();
Velocity.evaluate(context, writer, "TemplateData", templateContent);
writer.flush();
configGeneratorInfo.setMashedData(writer.toString());
}
} catch (Exception e) {
logger.error("Failed to generate Configuration ({})", e.getMessage());
throw new SvcLogicException(e.getMessage(), e);
}
return configGeneratorInfo;
}
}
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