check in conflict checks for now

Former-commit-id: 3cb5525525af11c5f65f69a35997f6d99678722b

Author: jshum2479

src/main/java/com/oracle/weblogicx/imagebuilder/builder/util/ARUUtil.java

@@ -120,6 +120,7 @@ public static List<String> getPatchesFor(String category, String version, List<S
         }
         return results;
     }
+    
     /**
      *
      * @param patches  A list of patches number
@@ -130,17 +131,30 @@ public static List<String> getPatchesFor(String category, String version, List<S
      * @throws IOException  when failed to access the aru api
      */
 
-    public static void validatePatches(List<String> patches, String category, String version, String userId, String
+    public static boolean validatePatches(List<String> patches, String category, String version, String userId, String
         password) throws IOException {
 
-        // TODO
+        StringBuffer payload = new StringBuffer
+            ("<conflict_check_request><platform>2000</platform><target_patch_list/>");
+        String releaseNumber = getReleaseNumber(category, version, userId, password);
 
-        // find the release number first based on the version
-        // build the xml
-        //String payload = null;
+        for (String patch : patches) {
+            payload.append(String.format("<candidate_patch_list rel_id=\"%s\">%s</conflict_check_request>",
+                releaseNumber, patch));
+        }
+        payload.append("</conflict_check_request>");
 
-        //HttpUtil.checkConflicts(CONFLICTCHECKER_URL, payload, userId, password);
+        Document result = HttpUtil.checkConflicts(CONFLICTCHECKER_URL, payload.toString(), userId, password);
 
+        try {
+            NodeList conflictSets = XPathUtil.applyXPathReturnNodeList(result, "/conflict_sets");
+            if (conflictSets.getLength() == 0)
+                return true;
+        } catch (XPathExpressionException xpe) {
+            throw new IOException(xpe);
+
+        }
+        return false;
     }
 
     private static  Document getAllReleases(String category, String userId, String password) throws IOException {

src/main/java/com/oracle/weblogicx/imagebuilder/builder/util/HttpUtil.java

@@ -163,7 +163,7 @@ public static void downloadFile(String url, String fileName, UserSession userSes
      * @throws IOException
      */
 
-    public static String checkConflicts(String url, String payload, String username, String password)
+    public static Document checkConflicts(String url, String payload, String username, String password)
         throws IOException {
         RequestConfig.Builder config = RequestConfig.custom();
         config.setCircularRedirectsAllowed(true);
@@ -184,11 +184,25 @@ public static String checkConflicts(String url, String payload, String username,
             .addPart(FormBodyPartBuilder.create("request_xml", new StringBody(payload, ContentType.TEXT_PLAIN)).build())
             .build();
 
-        String response =
+        String xmlString =
             httpExecutor.execute(Request.Post(url).connectTimeout(30000).socketTimeout(30000).body(entity))
                 .returnContent().asString();
 
-        return response;
+        try {
+            DocumentBuilderFactory dbfac = DocumentBuilderFactory.newInstance();
+            DocumentBuilder docBuilder = dbfac.newDocumentBuilder();
+            InputSource is = new InputSource(new StringReader(xmlString));
+            Document doc = docBuilder.parse(is);
+            //  XPathUtil.prettyPrint(doc);
+            return doc;
+        } catch (ParserConfigurationException ex) {
+            throw new IllegalStateException(ex);
+        } catch (SAXException ex) {
+            throw new ClientProtocolException("Malformed XML document", ex);
+        } catch (Exception g) {
+            throw new IllegalStateException(g);
+        }
+
     }