CCSDK PropNode can read XML and put to ctx

Issue-ID: CCSDK-303
Change-Id: I7104e7f8735d0c1496e93cdb8112e49333b016e9
Signed-off-by: Ganesh Chandrasekaran <ganesh.c@samsung.com>

3 files changed, 215 insertions, 12 deletions

diff --git a/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/Parameters.java b/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/Parameters.java
index e15f0822..99e4647d 100644
--- a/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/Parameters.java
+++ b/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/Parameters.java
@@ -21,7 +21,11 @@
 
 package org.onap.ccsdk.sli.plugins.prop;
 
+import java.util.Set;
+
 public class Parameters {
     public String fileName;
     public String contextPrefix;
+    public Set<String> listNameList;
+    public boolean fileBasedParsing;
 }
diff --git a/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/PropertiesNode.java b/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/PropertiesNode.java
index 63fdeded..cefc9c23 100644
--- a/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/PropertiesNode.java
+++ b/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/PropertiesNode.java
@@ -25,8 +25,10 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.HashSet;
 import java.util.Map;
 import java.util.Properties;
+import java.util.Set;
 
 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
 import org.onap.ccsdk.sli.core.sli.SvcLogicException;
@@ -46,12 +48,33 @@ public class PropertiesNode implements SvcLogicJavaPlugin {
             InputStream in = new FileInputStream(file);
             Map<String, String> mm = null;
             String pfx = param.contextPrefix != null ? param.contextPrefix + '.' : "";
-            if ("json".equalsIgnoreCase(getFileExtension(param.fileName))){
+            if(param.fileBasedParsing){
                 byte[] data = new byte[(int) file.length()];
-                in.read(data);
-                in.close();
-                String str = new String(data, "UTF-8");
-                mm = JsonParser.convertToProperties(str);
+                if ("json".equalsIgnoreCase(getFileExtension(param.fileName))) {
+                    in.read(data);
+                    String str = new String(data, "UTF-8");
+                    mm = JsonParser.convertToProperties(str);
+                } else if ("xml".equalsIgnoreCase(getFileExtension(param.fileName))) {
+                    in.read(data);
+                    String str = new String(data, "UTF-8");
+                    mm = XmlParser.convertToProperties(str, param.listNameList);
+                } else {
+                    prop.load(in);
+                    for (Object key : prop.keySet()) {
+                        String name = (String) key;
+                        String value = prop.getProperty(name);
+                        if (value != null && value.trim().length() > 0) {
+                            ctx.setAttribute(pfx + name, value.trim());
+                            log.info("+++ " + pfx + name + ": [" + value + "]");
+                        }
+                    }
+                }
+                if (mm != null){
+                    for (Map.Entry<String,String> entry : mm.entrySet()){
+                        ctx.setAttribute(pfx + entry.getKey(), entry.getValue());
+                        log.info("+++ " + pfx + entry.getKey() + ": [" + entry.getValue() + "]");
+                    }
+                }
             } else {
                 prop.load(in);
                 for (Object key : prop.keySet()) {
@@ -63,13 +86,7 @@ public class PropertiesNode implements SvcLogicJavaPlugin {
                     }
                 }
             }
-            if (mm != null){
-                for (Map.Entry<String,String> entry : mm.entrySet()){
-                    ctx.setAttribute(pfx + entry.getKey(), entry.getValue());
-                    log.info("+++ " + pfx + entry.getKey() + ": [" + entry.getValue() + "]");
-                }
-            }
-
+            in.close();
         } catch (IOException e) {
             throw new SvcLogicException("Cannot read property file: " + param.fileName + ": " + e.getMessage(), e);
         }
@@ -92,9 +109,20 @@ public class PropertiesNode implements SvcLogicJavaPlugin {
         Parameters p = new Parameters();
         p.fileName = parseParam(paramMap, "fileName", true, null);
         p.contextPrefix = parseParam(paramMap, "contextPrefix", false, null);
+        p.listNameList = getListNameList(paramMap);
+        String fileBasedParsingStr = paramMap.get("fileBasedParsing");
+        p.fileBasedParsing = "true".equalsIgnoreCase(fileBasedParsingStr);
         return p;
     }
 
+    protected Set<String> getListNameList(Map<String, String> paramMap) {
+        Set<String> ll = new HashSet<>();
+        for (Map.Entry<String,String> entry : paramMap.entrySet())
+            if (entry.getKey().startsWith("listName"))
+                ll.add(entry.getValue());
+        return ll;
+    }
+
     private String parseParam(Map<String, String> paramMap, String name, boolean required, String def)
             throws SvcLogicException {
         String s = paramMap.get(name);
diff --git a/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/XmlParser.java b/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/XmlParser.java
new file mode 100644
index 00000000..c9581af5
--- /dev/null
+++ b/properties-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/prop/XmlParser.java
@@ -0,0 +1,171 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : SDN-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.ccsdk.sli.plugins.prop;
+
+import org.onap.ccsdk.sli.core.sli.SvcLogicException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+import org.xml.sax.helpers.DefaultHandler;
+
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+public final class XmlParser {
+
+    private static final Logger log = LoggerFactory.getLogger(XmlParser.class);
+
+    private XmlParser() {
+        // Preventing instantiation of the same.
+    }
+
+    public static Map<String, String> convertToProperties(String s, Set<String> listNameList)
+        throws SvcLogicException {
+
+        checkNotNull(s, "Input should not be null.");
+
+        Handler handler = new Handler(listNameList);
+        try {
+            SAXParserFactory factory = SAXParserFactory.newInstance();
+            SAXParser saxParser = factory.newSAXParser();
+            InputStream in = new ByteArrayInputStream(s.getBytes());
+            saxParser.parse(in, handler);
+        } catch (ParserConfigurationException | IOException | SAXException | NumberFormatException e) {
+            throw new SvcLogicException("Unable to convert XML to properties" + e.getLocalizedMessage(), e);
+        }
+        return handler.getProperties();
+    }
+
+    private static class Handler extends DefaultHandler {
+
+        private Set<String> listNameList;
+
+        private Map<String, String> properties = new HashMap<>();
+
+        public Map<String, String> getProperties() {
+            return properties;
+        }
+
+        public Handler(Set<String> listNameList) {
+            super();
+            this.listNameList = listNameList;
+            if (this.listNameList == null)
+                this.listNameList = new HashSet<>();
+        }
+
+        StringBuilder currentName = new StringBuilder();
+        StringBuilder currentValue = new StringBuilder();
+
+        @Override
+        public void startElement(String uri, String localName, String qName, Attributes attributes)
+                throws SAXException {
+            super.startElement(uri, localName, qName, attributes);
+
+            String name = localName;
+            if (name == null || name.trim().length() == 0)
+                name = qName;
+            int i2 = name.indexOf(':');
+            if (i2 >= 0)
+                name = name.substring(i2 + 1);
+
+            if (currentName.length() > 0)
+                currentName.append(Character.toString('.'));
+            currentName.append(name);
+
+            String listName = removeIndexes(currentName.toString());
+
+            if (listNameList.contains(listName)) {
+                String n = currentName.toString() + "_length";
+                int len = getInt(properties, n);
+                properties.put(n, String.valueOf(len + 1));
+                currentName.append("[").append(len).append("]");
+            }
+        }
+
+        @Override
+        public void endElement(String uri, String localName, String qName) throws SAXException {
+            super.endElement(uri, localName, qName);
+
+            String name = localName;
+            if (name == null || name.trim().length() == 0)
+                name = qName;
+            int i2 = name.indexOf(':');
+            if (i2 >= 0)
+                name = name.substring(i2 + 1);
+
+            String s = currentValue.toString().trim();
+            if (s.length() > 0) {
+                properties.put(currentName.toString(), s);
+
+                log.info("Added property: {} : {}", currentName, s);
+                currentValue = new StringBuilder();
+            }
+
+            int i1 = currentName.lastIndexOf("." + name);
+            if (i1 <= 0)
+                currentName = new StringBuilder();
+            else
+                currentName = new StringBuilder(currentName.substring(0, i1));
+        }
+
+        @Override
+        public void characters(char[] ch, int start, int length) throws SAXException {
+            super.characters(ch, start, length);
+
+            String value = new String(ch, start, length);
+            currentValue.append(value);
+        }
+
+        private static int getInt(Map<String, String> mm, String name) {
+            String s = mm.get(name);
+            if (s == null)
+                return 0;
+            return Integer.parseInt(s);
+        }
+
+        private String removeIndexes(String currentName) {
+            StringBuilder b = new StringBuilder();
+            boolean add = true;
+            for (int i = 0; i < currentName.length(); i++) {
+                char c = currentName.charAt(i);
+                if (c == '[')
+                    add = false;
+                else if (c == ']')
+                    add = true;
+                else if (add)
+                    b.append(Character.toString(c));
+            }
+            return b.toString();
+        }
+    }
+}