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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2016-2018 Ericsson. 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package com.ericsson.testvnf.server.helper;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.ext.DefaultHandler2;
import com.ericsson.testvnf.server.models.Hello;
import com.ericsson.testvnf.server.models.RpcData;
import com.ericsson.testvnf.server.models.SchemaDetails;
import com.ericsson.testvnf.server.requestqueue.RequestQueueHandler;
/*
* Parses the xml requests and populates netconf related data to do operations
*/
public class CustomParser extends DefaultHandler2 {
private Log log = LogFactory.getLog(CustomParser.class);
private RequestQueueHandler requestQueueHandler;
private Hello hello;
private RpcData rpcData;
private boolean nextIsOperationTag = false;
private boolean insideOperationTag = false;
private String operationTagValue = "";
private StringBuilder operationTagContent = new StringBuilder();
private boolean insideConfigurationDatastore = false;
private boolean insideSchemaDetailsTag = false;
private StringBuilder individualSchemaDetailsTagContent = new StringBuilder();
private SchemaDetails schemaDetails;
private boolean insideTargetNameTag = false;
private StringBuilder targetNameContent = new StringBuilder();
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
super.startElement(uri, localName, qName, attributes);
String messageId;
if (nextIsOperationTag) {
insideOperationTag = true;
rpcData.setOperation(localName);
operationTagValue = localName;
nextIsOperationTag = false;
if (localName.equalsIgnoreCase("get-schema")) {
insideSchemaDetailsTag = true;
schemaDetails = new SchemaDetails();
}
}
if (insideOperationTag) {
populateStartElementData(localName, attributes);
}
if (localName.equalsIgnoreCase("hello")) {
hello = new Hello();
} else if (localName.equalsIgnoreCase("rpc")) {
rpcData = new RpcData();
messageId = attributes.getValue("message-id");
if (messageId == null)
throw new SAXException("Received <rpc> message without a message ID");
rpcData.setMessageId(messageId);
nextIsOperationTag = true;
}
}
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
super.characters(ch, start, length);
if (insideOperationTag) {
operationTagContent.append(ch, start, length);
if (insideSchemaDetailsTag) {
individualSchemaDetailsTagContent.append(ch, start, length);
}else if (insideTargetNameTag) {
targetNameContent.append(ch, start, length);
}
}
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
super.endElement(uri, localName, qName);
if (insideOperationTag) {
populateEndElementData(localName);
}
if (localName.equalsIgnoreCase("hello")) {
requestQueueHandler.addToQueue(hello);
hello = null;
/* Query tags and operations */
} else if (localName.equalsIgnoreCase("rpc")) {
requestQueueHandler.addToQueue(rpcData);
rpcData = null;
}else if(operationTagValue.equals(localName)) {
rpcData.setOperationTagContent(operationTagContent.toString());
insideOperationTag = false;
operationTagContent = new StringBuilder();
if (localName.equalsIgnoreCase("get-schema")) {
insideSchemaDetailsTag = false;
rpcData.setSchemaDetails(schemaDetails);
schemaDetails = new SchemaDetails();
}
}
}
private void populateStartElementData(String localName, Attributes attributes) {
if (insideConfigurationDatastore) {
rpcData.setConfigurationDatastore(localName);
}
if (localName.equalsIgnoreCase("target") || localName.equalsIgnoreCase("source")) {
insideConfigurationDatastore = true;
} else if(localName.equalsIgnoreCase("target-name")) {
insideTargetNameTag = true;
}
operationTagContent.append("<" + localName);
for (int i = 0; i < attributes.getLength(); i++) {
operationTagContent.append(" " + attributes.getQName(i) + "=\"" + attributes.getValue(i) + "\"");
}
operationTagContent.append(">");
}
private void populateEndElementData(String localName) {
if (localName.equalsIgnoreCase("target") || localName.equalsIgnoreCase("source")) {
insideConfigurationDatastore = false;
} else if(localName.equalsIgnoreCase("target-name")) {
insideTargetNameTag = false;
rpcData.setTargetName(targetNameContent.toString());
targetNameContent = new StringBuilder();
} else if (insideSchemaDetailsTag) {
if(localName.equalsIgnoreCase("identifier")) {
schemaDetails.setIdentifier(individualSchemaDetailsTagContent.toString().trim());
individualSchemaDetailsTagContent = new StringBuilder();
} else if(localName.equalsIgnoreCase("version")) {
schemaDetails.setVersion(individualSchemaDetailsTagContent.toString().trim());
individualSchemaDetailsTagContent = new StringBuilder();
}
}
operationTagContent.append("</" + localName + ">");
}
public void setRequestQueueHandler(RequestQueueHandler queue) {
this.requestQueueHandler = queue;
}
@Override
public void error(SAXParseException e) throws SAXException {
log.warn(e.getMessage());
}
@Override
public void fatalError(SAXParseException e) throws SAXException {
log.warn(e.getMessage());
}
}
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