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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.ccsdk.sli.adaptors.netconf;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.commons.lang3.StringUtils;
import org.onap.ccsdk.sli.core.sli.SvcLogicException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class VNFOperationalStateValidatorImpl implements OperationalStateValidator {
private static final String OPERATIONAL_STATE_ELEMENT_NAME = "operationalState";
@Override
public VnfType getVnfType() {
return VnfType.VNF;
}
@Override
public String getConfigurationFileName() {
String configFileName = OperationalStateValidatorFactory.configuration
.getProperty(this.getClass().getCanonicalName() + CONFIG_FILE_PROPERTY_SUFFIX);
configFileName = configFileName == null ? "VnfGetOperationalStates" : configFileName;
return configFileName;
}
@Override
public void validateResponse(String response) throws SvcLogicException {
if(StringUtils.isEmpty(response)) {
throw new SvcLogicException("empty response");
}
try {
List<Map.Entry> operationalStateList = getOperationalStateList(response).orElseThrow(() ->
new SvcLogicException("response without any "+OPERATIONAL_STATE_ELEMENT_NAME+" element"));
if(operationalStateList.stream().anyMatch(this::isNotEnabled)) {
throw new SvcLogicException("at least one "+OPERATIONAL_STATE_ELEMENT_NAME+" is not in valid state. "
+operationalStateList.toString());
}
} catch (Exception e) {
throw new SvcLogicException(e.toString());
}
}
private boolean isNotEnabled(Map.Entry stateEntry) {
return !("ENABLED").equalsIgnoreCase((String)stateEntry.getValue());
}
private static Optional<List<Map.Entry>> getOperationalStateList(String xmlText) throws IOException, ParserConfigurationException, SAXException {
List<Map.Entry> entryList = null;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(new ByteArrayInputStream(xmlText.getBytes(StandardCharsets.UTF_8)));
if(document != null) {
Element rootElement = document.getDocumentElement();
NodeList nodeList = rootElement.getElementsByTagName(OPERATIONAL_STATE_ELEMENT_NAME);
if (nodeList != null && nodeList.getLength() > 0) {
entryList = new ArrayList<>();
for (int i = 0; i < nodeList.getLength(); i++) {
Node node = nodeList.item(i);
String text = node.getTextContent();
String id = getElementID(node);
Map.Entry entry = new AbstractMap.SimpleEntry<>(id, text);
entryList.add(entry);
}
}
}
return Optional.ofNullable(entryList);
}
private static String getElementID(Node node) {
String id = null;
Node parentNode = node.getParentNode();
if (parentNode != null) {
if (node.getNodeType() == Node.ELEMENT_NODE) {
NodeList nodeList = ((Element) parentNode).getElementsByTagName("id");
if (nodeList != null && nodeList.getLength() > 0) {
Node idNode = nodeList.item(0);
id = idNode != null ? idNode.getTextContent() : null;
}
}else {
id = parentNode.getNodeValue()+"|"+parentNode.getTextContent();
}
}
id = StringUtils.isEmpty(id) ? null : StringUtils.normalizeSpace(id);
id = StringUtils.isBlank(id) ? null : id;
id = id != null ? id : "unknown-id";
return id;
}
}
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