Fixed netconf-xml parsing issue

Issue-ID: APPC-1624
Change-Id: I12aa5f1a42d5e09b5eb8886132ea9e5a2c84ef5e
Signed-off-by: Lathish <lathishbabu.ganesan@est.tech>

3 files changed, 76 insertions, 11 deletions

diff --git a/appc-config/appc-config-adaptor/provider/src/main/java/org/onap/appc/ccadaptor/ConfigComponentAdaptor.java b/appc-config/appc-config-adaptor/provider/src/main/java/org/onap/appc/ccadaptor/ConfigComponentAdaptor.java
index 00df23bf8..f57f188d9 100644
--- a/appc-config/appc-config-adaptor/provider/src/main/java/org/onap/appc/ccadaptor/ConfigComponentAdaptor.java
+++ b/appc-config/appc-config-adaptor/provider/src/main/java/org/onap/appc/ccadaptor/ConfigComponentAdaptor.java
@@ -25,18 +25,46 @@
 
 package org.onap.appc.ccadaptor;
 
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.StringReader;
+import java.io.StringWriter;
+import java.net.HttpURLConnection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.NoSuchElementException;
+import java.util.Properties;
+import java.util.StringTokenizer;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.transform.OutputKeys;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerException;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+import javax.xml.xpath.XPath;
+import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathExpressionException;
+import javax.xml.xpath.XPathFactory;
+import org.onap.appc.exceptions.APPCException;
+import org.onap.ccsdk.sli.core.sli.SvcLogicAdaptor;
+import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
 import com.sun.jersey.api.client.Client;
 import com.sun.jersey.api.client.ClientResponse;
 import com.sun.jersey.api.client.WebResource;
 import com.sun.jersey.core.util.Base64;
-import org.onap.ccsdk.sli.core.sli.SvcLogicAdaptor;
-import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
-
-import java.io.*;
-import java.net.HttpURLConnection;
-import java.util.*;
 
 public class ConfigComponentAdaptor implements SvcLogicAdaptor {
 
@@ -982,7 +1010,45 @@ public class ConfigComponentAdaptor implements SvcLogicAdaptor {
         return (strBuff.toString());
     }
 
-    private String trimResponse(String response) {
+  /**
+   * A supporting method to extract the data and configuration element from the NETCONF-XML response
+   * from the node and create well formatted xml.
+   *
+   * @param requestData The unformatted NETCONF-XML
+   * @return responseBuilder the extracted data
+   * @throws APPCException Exception during parsing xml data
+   */
+  private String extractFromNetconfXml(String requestData) throws APPCException {
+    log.debug("extractFromNetconfXml -- Start");
+    StringBuilder responseBuilder = new StringBuilder();
+    StringWriter stringBuffer = new StringWriter();
+    try {
+      requestData = requestData.replaceAll("]]>]]>", "");
+      DocumentBuilder documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
+      Document document = documentBuilder.parse(new InputSource(new StringReader(requestData)));
+      document.getDocumentElement().normalize();
+      XPath xPath = XPathFactory.newInstance().newXPath();
+      Node dataNode = (Node) xPath.evaluate("//data", document, XPathConstants.NODE);
+      Transformer xform = TransformerFactory.newInstance().newTransformer();
+      xform.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
+      xform.setOutputProperty(OutputKeys.INDENT, "yes");
+      xform.transform(new DOMSource(dataNode), new StreamResult(stringBuffer));
+      responseBuilder.append(stringBuffer.toString());
+      if (log.isTraceEnabled()) {
+        log.trace("ConfigComponentAdaptor:extractFromNetconfXml after Extract: "
+            + responseBuilder.toString());
+      }
+    } catch (SAXException | IOException | ParserConfigurationException | TransformerException
+        | XPathExpressionException exception) {
+      throw new APPCException("Error Occured during parsing Netconf-XML", exception);
+
+    }
+    log.debug("extractFromNetconfXml -- End");
+    return responseBuilder.toString();
+  }
+
+  private String trimResponse(String response) throws APPCException {
+        response = extractFromNetconfXml(response);
         log.debug("runningConfig before trimResponse : " + response);
         StringTokenizer line = new StringTokenizer(response, "\n");
         StringBuffer sb = new StringBuffer();
@@ -992,7 +1058,7 @@ public class ConfigComponentAdaptor implements SvcLogicAdaptor {
             String token = line.nextToken();
             if (token.indexOf("<configuration xmlns=") != -1) {
                 captureText = true;
-            }else if(token.indexOf("<data>") != -1) {
+            }else if(token.indexOf("<data") != -1) {
                 log.debug("token-line:with in Data: "+token);
                 captureText = true;
                 continue;
diff --git a/appc-config/appc-config-adaptor/provider/src/main/java/org/onap/appc/ccadaptor/SshJcraftWrapper.java b/appc-config/appc-config-adaptor/provider/src/main/java/org/onap/appc/ccadaptor/SshJcraftWrapper.java
index 62773a06c..570f11eed 100644
--- a/appc-config/appc-config-adaptor/provider/src/main/java/org/onap/appc/ccadaptor/SshJcraftWrapper.java
+++ b/appc-config/appc-config-adaptor/provider/src/main/java/org/onap/appc/ccadaptor/SshJcraftWrapper.java
@@ -654,7 +654,6 @@ public class SshJcraftWrapper {
 
         int numTokens = rr.countTokens();
         if (numTokens > 1) {
-            rr.nextToken(); //Skip the first line.
             while (rr.hasMoreTokens()) {
                 sb.append(rr.nextToken() + '\n');
             }
diff --git a/appc-config/appc-config-adaptor/provider/src/test/java/org/onap/appc/ccadaptor/ConfigComponentAdaptorTest.java b/appc-config/appc-config-adaptor/provider/src/test/java/org/onap/appc/ccadaptor/ConfigComponentAdaptorTest.java
index e798c65f6..c987bb2c9 100644
--- a/appc-config/appc-config-adaptor/provider/src/test/java/org/onap/appc/ccadaptor/ConfigComponentAdaptorTest.java
+++ b/appc-config/appc-config-adaptor/provider/src/test/java/org/onap/appc/ccadaptor/ConfigComponentAdaptorTest.java
@@ -245,7 +245,7 @@ public class ConfigComponentAdaptorTest {
     public void testXmlGetrunningconfig() throws TimedOutException, IOException {
         Properties props = null;
         ConfigComponentAdaptor cca = Mockito.spy(new ConfigComponentAdaptor(props));
-        Mockito.doReturn("<configuration xmlns=\"\n<data>\n</data>\n</configuration>")
+        Mockito.doReturn("<configuration xmlns=\"\">\"\n<data>\n</data>\n</configuration>")
                 .when(mockWrapper)
                 .receiveUntil(Mockito.anyString(), Mockito.anyInt(), Mockito.anyString());
         Mockito.doReturn(mockWrapper).when(cca).getSshJcraftWrapper();
@@ -260,7 +260,7 @@ public class ConfigComponentAdaptorTest {
     public void testXmlGetrunningconfigLongResponse() throws TimedOutException, IOException {
         Properties props = null;
         ConfigComponentAdaptor cca = Mockito.spy(new ConfigComponentAdaptor(props));
-        Mockito.doReturn("<configuration xmlns=\"\n<data>\nData line 1\nData line 2\nData line 3\nData line 4\n"
+        Mockito.doReturn("<configuration xmlns=\"\">\"\n<data>\nData line 1\nData line 2\nData line 3\nData line 4\n"
                 + "Data line 5\nData line 6\nData line 7\nData line 8\nData line 9\n Data line 10\n"
                 + "Data line 11\nData line 12\nData line 13\nData line 14\nData line 15\n"
                 + "Data line 16\nData line 17\nData line 18\nData line 19\nData line 20</data>\n</configuration>")