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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.assignment.processor;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.collections.MapUtils;
import org.apache.commons.lang3.StringUtils;
import org.onap.ccsdk.config.assignment.service.ConfigAssignmentUtils;
import org.onap.ccsdk.config.model.ConfigModelConstant;
import org.onap.ccsdk.config.model.ConfigModelException;
import org.onap.ccsdk.config.model.data.ResourceAssignment;
import org.onap.ccsdk.config.model.data.dict.ResourceDefinition;
import org.onap.ccsdk.config.model.data.dict.SourcesDefinition;
import org.onap.ccsdk.config.model.service.ComponentNode;
import org.onap.ccsdk.config.model.utils.ResourceAssignmentUtils;
import org.onap.ccsdk.config.model.utils.TransformationUtils;
import org.onap.ccsdk.config.rest.adaptor.ConfigRestAdaptorConstants;
import org.onap.ccsdk.config.rest.adaptor.service.ConfigRestAdaptorService;
import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
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;
public class MdsalResourceProcessor implements ComponentNode {
private static EELFLogger logger = EELFManager.getInstance().getLogger(MdsalResourceProcessor.class);
private ConfigRestAdaptorService configRestAdaptorService;
private Map<String, ResourceDefinition> dictionaries;
public MdsalResourceProcessor(ConfigRestAdaptorService configRestAdaptorService) {
this.configRestAdaptorService = configRestAdaptorService;
}
@Override
public Boolean preCondition(Map<String, String> inParams, SvcLogicContext ctx, Map<String, Object> componentContext)
throws SvcLogicException {
return Boolean.TRUE;
}
@Override
public void preProcess(Map<String, String> inParams, SvcLogicContext ctx, Map<String, Object> componentContext)
throws SvcLogicException {
// Auto-generated method stub
}
@Override
public void process(Map<String, String> inParams, SvcLogicContext ctx) throws SvcLogicException {
// Auto-generated method stub
}
@SuppressWarnings("unchecked")
@Override
public void process(Map<String, String> inParams, SvcLogicContext ctx, Map<String, Object> componentContext)
throws SvcLogicException {
try {
List<ResourceAssignment> batchResourceAssignment =
(List<ResourceAssignment>) componentContext.get(ConfigModelConstant.PROPERTY_RESOURCE_ASSIGNMENTS);
dictionaries =
(Map<String, ResourceDefinition>) componentContext.get(ConfigModelConstant.PROPERTY_DICTIONARIES);
if (CollectionUtils.isNotEmpty(batchResourceAssignment)) {
for (ResourceAssignment resourceAssignment : batchResourceAssignment) {
processResourceAssignmnet(ctx, componentContext, resourceAssignment);
}
}
} catch (Exception e) {
throw new SvcLogicException(String.format("MdsalResourceProcessor Exception : (%s) ", e), e);
}
}
private void processResourceAssignmnet(SvcLogicContext ctx, Map<String, Object> componentContext,
ResourceAssignment resourceAssignment) throws ConfigModelException, SvcLogicException {
try {
// Validating Resource Assignment and Dictionary Definition data
validate(resourceAssignment);
// Check if It has Input
Object value = ConfigAssignmentUtils.getContextKeyValue(ctx, resourceAssignment.getName());
if (value != null) {
logger.info("mdsal source template key ({}) found from input and value is ({})",
resourceAssignment.getName(), value);
ResourceAssignmentUtils.setResourceDataValue(componentContext, resourceAssignment, value);
return;
}
ResourceDefinition resourceDefinition = dictionaries.get(resourceAssignment.getDictionaryName());
SourcesDefinition sourceMdsal = resourceDefinition.getSources().get("mdsal");
String urlPath = sourceMdsal.getProperties().getUrlPath();
String path = sourceMdsal.getProperties().getPath();
Map<String, String> inputKeyMapping = sourceMdsal.getProperties().getInputKeyMapping();
Map<String, String> outputKeyMapping = sourceMdsal.getProperties().getOutputKeyMapping();
logger.info(
"mdsal dictionary information : urlpath ({}), path({}), inputKeyMapping ({}), outputKeyMapping ({})",
urlPath, path, inputKeyMapping, outputKeyMapping);
// Resolving url Variables
Map<String, Object> urlVariables = populateUrlVariables(inputKeyMapping, componentContext);
for (Map.Entry<String, Object> entry : urlVariables.entrySet()) {
urlPath = urlPath.replaceAll("\\$" + entry.getKey(), entry.getValue().toString());
}
String restResponse = fetchResourceFromMDSAL(urlPath);
// if restResponse is null don't call processMdsalResults to populate the value
if (StringUtils.isNotBlank(restResponse)) {
// Processing MDSAL Response
processMdsalResults(ctx, componentContext, resourceAssignment, sourceMdsal, restResponse);
} else {
logger.warn("Coudn't get proper mdsal Response content ({}) for Resource Name ({}) for URI ({})",
restResponse, resourceAssignment.getDictionaryName(), urlPath);
}
// Check the value has populated for mandatory case
ResourceAssignmentUtils.assertTemplateKeyValueNotNull(componentContext, resourceAssignment);
} catch (Exception e) {
ResourceAssignmentUtils.setFailedResourceDataValue(componentContext, resourceAssignment, e.getMessage());
throw new SvcLogicException(
String.format("Failed in assignments for (%s) with (%s)", resourceAssignment, e), e);
}
}
private String fetchResourceFromMDSAL(String urlPath) {
String response = null;
try {
response = configRestAdaptorService.getResource(ConfigRestAdaptorConstants.SELECTOR_RESTCONF, urlPath,
String.class);
} catch (Exception e) {
logger.warn("Fetching MDSAL data for URL ({}) failed with Error ({})", urlPath, e);
}
return response;
}
private void validate(ResourceAssignment resourceAssignment) throws SvcLogicException {
if (resourceAssignment == null) {
throw new SvcLogicException("resource assignment is not defined");
}
if (StringUtils.isBlank(resourceAssignment.getName())) {
throw new SvcLogicException("resource assignment template key is not defined");
}
if (StringUtils.isBlank(resourceAssignment.getDictionaryName())) {
throw new SvcLogicException(
String.format("resource assignment dictionary name is not defined for template key (%s)",
resourceAssignment.getName()));
}
if (!ConfigModelConstant.SOURCE_MDSAL.equalsIgnoreCase(resourceAssignment.getDictionarySource())) {
throw new SvcLogicException(String.format("resource assignment source is not mdsal, it is (%s)",
resourceAssignment.getDictionarySource()));
}
ResourceDefinition resourceDefinition = dictionaries.get(resourceAssignment.getDictionaryName());
if (resourceDefinition == null) {
throw new SvcLogicException(String.format("missing resource dictionary definition for name (%s) ",
resourceAssignment.getDictionaryName()));
}
if (StringUtils.isBlank(resourceDefinition.getProperty().getType())) {
throw new SvcLogicException(String.format(String.format("Failed to get dictionary (%s) data type info.",
resourceAssignment.getDictionaryName())));
}
if (resourceDefinition.getSources() == null || resourceDefinition.getSources().get("mdsal") == null) {
throw new SvcLogicException(
String.format("missing resource dictionary mdsal source definition for name (%s) ",
resourceAssignment.getDictionaryName()));
}
SourcesDefinition sourceMdsal = resourceDefinition.getSources().get("mdsal");
if (StringUtils.isBlank(sourceMdsal.getProperties().getUrlPath())) {
throw new SvcLogicException(String.format("Failed to get request URL Path for dictionary (%s)",
resourceAssignment.getDictionaryName()));
}
if (StringUtils.isBlank(sourceMdsal.getProperties().getPath())) {
throw new SvcLogicException(String.format("Failed to get request Path for dictionary (%s)",
resourceAssignment.getDictionaryName()));
}
}
private Map<String, Object> populateUrlVariables(Map<String, String> inputKeyMapping,
Map<String, Object> componentContext) {
Map<String, Object> urlVariables = new HashMap<>();
if (MapUtils.isNotEmpty(inputKeyMapping)) {
for (Map.Entry<String, String> mapping : inputKeyMapping.entrySet()) {
ResourceDefinition referenceDictionaryDefinition = dictionaries.get(mapping.getValue());
Object expressionValue =
ResourceAssignmentUtils.getDictionaryKeyValue(componentContext, referenceDictionaryDefinition);
logger.trace("Reference dictionary key ({}), value ({})", mapping.getKey(), expressionValue);
urlVariables.put(mapping.getKey(), expressionValue);
}
}
return urlVariables;
}
private void processMdsalResults(SvcLogicContext ctx, Map<String, Object> componentContext,
ResourceAssignment resourceAssignment, SourcesDefinition sourceMdsal, String restResponse)
throws SvcLogicException, ConfigModelException {
Map<String, String> outputKeyMapping = sourceMdsal.getProperties().getOutputKeyMapping();
JsonNode responseNode = TransformationUtils.getJsonNodeForString(restResponse);
if (StringUtils.isNotBlank(sourceMdsal.getProperties().getPath())) {
responseNode = responseNode.at(sourceMdsal.getProperties().getPath());
}
if (responseNode != null) {
ConfigAssignmentUtils.populateValueForOutputMapping(ctx, componentContext, resourceAssignment,
outputKeyMapping, responseNode);
}
}
@Override
public void postProcess(Map<String, String> inParams, SvcLogicContext ctx, Map<String, Object> componentContext)
throws SvcLogicException {
// Do Nothing
}
}
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