Add Holmes to the Backend

Add support for Holmes boxes defined in GUI, Holmes model has been added
and also policy calls.

Change-Id: I2bbef0030b5174075792b459b7ced74aa2e8aad2
Issue-Id: CLAMP-27
Signed-off-by: Determe, Sebastien (sd378r) <sd378r@intl.att.com>

11 files changed, 291 insertions, 100 deletions

diff --git a/src/main/java/org/onap/clamp/clds/client/HolmesPolicyDelegate.java b/src/main/java/org/onap/clamp/clds/client/HolmesPolicyDelegate.java
new file mode 100644
index 00000000..db7b5241
--- /dev/null
+++ b/src/main/java/org/onap/clamp/clds/client/HolmesPolicyDelegate.java
@@ -0,0 +1,72 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * 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============================================
+ * ===================================================================
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ */
+
+package org.onap.clamp.clds.client;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+import java.util.UUID;
+
+import org.camunda.bpm.engine.delegate.DelegateExecution;
+import org.camunda.bpm.engine.delegate.JavaDelegate;
+import org.onap.clamp.clds.model.prop.Holmes;
+import org.onap.clamp.clds.model.prop.ModelProperties;
+import org.onap.clamp.clds.model.refprop.RefProp;
+import org.springframework.beans.factory.annotation.Autowired;
+
+/**
+ * Send Holmes info to policy api.
+ */
+public class HolmesPolicyDelegate implements JavaDelegate {
+    protected static final EELFLogger logger        = EELFManager.getInstance().getLogger(HolmesPolicyDelegate.class);
+    protected static final EELFLogger metricsLogger = EELFManager.getInstance().getMetricsLogger();
+
+    @Autowired
+    private PolicyClient              policyClient;
+
+    @Autowired
+    private RefProp                   refProp;
+
+    /**
+     * Perform activity. Send Holmes info to policy api.
+     *
+     * @param execution
+     */
+    @Override
+    public void execute(DelegateExecution execution) throws Exception {
+        String holmesPolicyRequestUuid = UUID.randomUUID().toString();
+        execution.setVariable("holmesPolicyRequestUuid", holmesPolicyRequestUuid);
+
+        ModelProperties prop = ModelProperties.create(execution);
+        Holmes holmes = prop.getType(Holmes.class);
+        if (holmes.isFound()) {
+            String responseMessage = policyClient.sendMicroServiceInJson(holmes.getCorrelationLogic(), prop,
+                    holmesPolicyRequestUuid);
+            if (responseMessage != null) {
+                execution.setVariable("holmesPolicyResponseMessage", responseMessage.getBytes());
+            }
+        }
+    }
+
+}
diff --git a/src/main/java/org/onap/clamp/clds/client/HolmesPolicyDeleteDelegate.java b/src/main/java/org/onap/clamp/clds/client/HolmesPolicyDeleteDelegate.java
new file mode 100644
index 00000000..46b33ffe
--- /dev/null
+++ b/src/main/java/org/onap/clamp/clds/client/HolmesPolicyDeleteDelegate.java
@@ -0,0 +1,62 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * 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============================================
+ * ===================================================================
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ */
+
+package org.onap.clamp.clds.client;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+import org.camunda.bpm.engine.delegate.DelegateExecution;
+import org.camunda.bpm.engine.delegate.JavaDelegate;
+import org.onap.clamp.clds.model.prop.Holmes;
+import org.onap.clamp.clds.model.prop.ModelProperties;
+import org.springframework.beans.factory.annotation.Autowired;
+
+/**
+ * Delete Holmes Policy via policy api.
+ */
+public class HolmesPolicyDeleteDelegate implements JavaDelegate {
+    protected static final EELFLogger logger        = EELFManager.getInstance()
+            .getLogger(HolmesPolicyDeleteDelegate.class);
+    protected static final EELFLogger metricsLogger = EELFManager.getInstance().getMetricsLogger();
+
+    @Autowired
+    private PolicyClient              policyClient;
+
+    /**
+     * Perform activity. Delete Holmes Policy via policy api.
+     *
+     * @param execution
+     */
+    @Override
+    public void execute(DelegateExecution execution) throws Exception {
+        ModelProperties prop = ModelProperties.create(execution);
+        Holmes holmes = prop.getType(Holmes.class);
+        if (holmes.isFound()) {
+            prop.setCurrentModelElementId(holmes.getId());
+
+            policyClient.deleteMicrosService(prop);
+        }
+    }
+
+}
diff --git a/src/main/java/org/onap/clamp/clds/model/prop/Holmes.java b/src/main/java/org/onap/clamp/clds/model/prop/Holmes.java
new file mode 100644
index 00000000..233f656e
--- /dev/null
+++ b/src/main/java/org/onap/clamp/clds/model/prop/Holmes.java
@@ -0,0 +1,71 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * 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============================================
+ * ===================================================================
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ */
+
+package org.onap.clamp.clds.model.prop;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+/**
+ * Parse Holmes bpmn parameters json properties.
+ * <p>
+ * Example json:
+ * [{"name":"correlationalLogic","value":"vcwx"},{"name":"operationalPolicy","value":"cccc"}]
+ *
+ */
+public class Holmes extends ModelElement {
+
+    private static final String TYPE_HOLMES = "holmes";
+
+    private String              correlationLogic;
+
+    private String              operationalPolicy;
+
+    /**
+     * Default constructor for Holmes Element
+     * 
+     * @param modelProp
+     *            The ModelProperties containing the all the info, like bpmn,
+     *            bpmn params, etc ...
+     * @param modelBpmn
+     * @param modelJson
+     */
+    public Holmes(ModelProperties modelProp, ModelBpmn modelBpmn, JsonNode modelJson) {
+        super(TYPE_HOLMES, modelProp, modelBpmn, modelJson);
+
+        correlationLogic = this.getValueByName("correlationalLogic");
+        operationalPolicy = this.getValueByName("operationalPolicy");
+    }
+
+    public static final String getType() {
+        return TYPE_HOLMES;
+    }
+
+    public String getCorrelationLogic() {
+        return correlationLogic;
+    }
+
+    public String getOperationalPolicy() {
+        return operationalPolicy;
+    }
+
+}
diff --git a/src/main/java/org/onap/clamp/clds/model/prop/ModelBpmn.java b/src/main/java/org/onap/clamp/clds/model/prop/ModelBpmn.java
index 63a03058..ae7028dc 100644
--- a/src/main/java/org/onap/clamp/clds/model/prop/ModelBpmn.java
+++ b/src/main/java/org/onap/clamp/clds/model/prop/ModelBpmn.java
@@ -23,6 +23,15 @@
 
 package org.onap.clamp.clds.model.prop;
 
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -33,15 +42,6 @@ import java.util.Map.Entry;
 
 import org.onap.clamp.clds.service.CldsService;
 
-import com.att.eelf.configuration.EELFLogger;
-import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.core.JsonParseException;
-import com.fasterxml.jackson.databind.JsonMappingException;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.node.ArrayNode;
-import com.fasterxml.jackson.databind.node.ObjectNode;
-
 /**
  * Parse Model BPMN properties.
  * <p>
@@ -50,9 +50,9 @@ import com.fasterxml.jackson.databind.node.ObjectNode;
  * :[{"id":"Policy_0oxeocn", "from":"StringMatch_0h6cbdv"}]}
  */
 public class ModelBpmn {
-    protected static final EELFLogger                       logger        = EELFManager.getInstance()
+    protected static final EELFLogger               logger        = EELFManager.getInstance()
             .getLogger(CldsService.class);
-    protected static final EELFLogger                 auditLogger   = EELFManager.getInstance().getAuditLogger();
+    protected static final EELFLogger               auditLogger   = EELFManager.getInstance().getAuditLogger();
 
     // for each type, an array of entries
     private final Map<String, List<ModelBpmnEntry>> entriesByType = new HashMap<>();
@@ -123,12 +123,14 @@ public class ModelBpmn {
     }
 
     /**
-     *
+     * This method verifies if the ModelElement Type (collector, holmes, tca,
+     * ...) is in the list.
      *
      * @param type
+     *            A model Element type (tca, collector, ...)
      * @return true if the element is found or false otherwise
      */
-    public boolean getModelElementFound(String type) {
+    public boolean isModelElementTypeInList(String type) {
         return entriesByType.get(type) != null;
     }
 
diff --git a/src/main/java/org/onap/clamp/clds/model/prop/ModelElement.java b/src/main/java/org/onap/clamp/clds/model/prop/ModelElement.java
index 42d11f4b..edf11426 100644
--- a/src/main/java/org/onap/clamp/clds/model/prop/ModelElement.java
+++ b/src/main/java/org/onap/clamp/clds/model/prop/ModelElement.java
@@ -32,20 +32,19 @@ import java.util.Iterator;
 import java.util.List;
 
 /**
- * Provide base ModelElement functionality.
+ * Provide base ModelElement functionality. Perform base parsing of properties
+ * for a ModelElement (such as, Collector, StringMatch, Policy, Tca, Holmes,
+ * ...)
  */
 public abstract class ModelElement {
     protected static final EELFLogger logger      = EELFManager.getInstance().getLogger(ModelElement.class);
     protected static final EELFLogger auditLogger = EELFManager.getInstance().getAuditLogger();
 
-    public static final String        TYPE_POLICY = "policy";
-    public static final String        TYPE_TCA    = "tca";
-
     private final String              type;
     private final ModelBpmn           modelBpmn;
     private final String              id;
     protected String                  topicPublishes;
-    protected final JsonNode          meNode;
+    protected final JsonNode          modelElementJsonNode;
     private boolean                   isFound;
 
     private final ModelProperties     modelProp;
@@ -64,12 +63,13 @@ public abstract class ModelElement {
         this.modelProp = modelProp;
         this.modelBpmn = modelBpmn;
         this.id = modelBpmn.getId(type);
-        this.meNode = modelJson.get(id);
-        this.isFound = modelBpmn.getModelElementFound(type);
+        this.modelElementJsonNode = modelJson.get(id);
+        this.isFound = modelBpmn.isModelElementTypeInList(type);
     }
 
     /**
-     * topicSubscribes is the topicPublishes of the from Model Element
+     * topicSubscribes is the topicPublishes of the from Model Element (the
+     * previous one in the chain).
      *
      * @return the topicSubscribes
      */
@@ -159,16 +159,14 @@ public abstract class ModelElement {
             while (i.hasNext()) {
                 JsonNode node = i.next();
                 if (node.path("name").asText().equals(name)) {
-                    String value;
                     JsonNode vnode = node.path("value");
                     if (vnode.isArray()) {
                         // if array, assume value is in first element
-                        value = vnode.path(0).asText();
+                        values.add(vnode.path(0).asText());
                     } else {
                         // otherwise, just return text
-                        value = vnode.asText();
+                        values.add(vnode.asText());
                     }
-                    values.add(value);
                 }
             }
         }
@@ -241,7 +239,7 @@ public abstract class ModelElement {
      * @return
      */
     public String getValueByName(String name) {
-        return getValueByName(meNode, name);
+        return getValueByName(modelElementJsonNode, name);
     }
 
     /**
@@ -252,7 +250,7 @@ public abstract class ModelElement {
      * @return
      */
     public Integer getIntValueByName(String name) {
-        return getIntValueByName(meNode, name);
+        return getIntValueByName(modelElementJsonNode, name);
     }
 
     /**
@@ -263,7 +261,7 @@ public abstract class ModelElement {
      * @return
      */
     public List<String> getValuesByName(String name) {
-        return getValuesByName(meNode, name);
+        return getValuesByName(modelElementJsonNode, name);
     }
 
     /**
diff --git a/src/main/java/org/onap/clamp/clds/model/prop/ModelProperties.java b/src/main/java/org/onap/clamp/clds/model/prop/ModelProperties.java
index 1cfd4616..9684eea8 100644
--- a/src/main/java/org/onap/clamp/clds/model/prop/ModelProperties.java
+++ b/src/main/java/org/onap/clamp/clds/model/prop/ModelProperties.java
@@ -23,6 +23,12 @@
 
 package org.onap.clamp.clds.model.prop;
 
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import java.util.HashSet;
@@ -36,19 +42,13 @@ import org.onap.clamp.clds.model.CldsEvent;
 import org.onap.clamp.clds.model.CldsModel;
 import org.onap.clamp.clds.service.CldsService;
 
-import com.att.eelf.configuration.EELFLogger;
-import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
-
 /**
  * Parse model properties.
  */
 public class ModelProperties {
-    protected static final EELFLogger                                 logger              = EELFManager.getInstance()
+    protected static final EELFLogger                         logger              = EELFManager.getInstance()
             .getLogger(CldsService.class);
-    protected static final EELFLogger                           auditLogger         = EELFManager.getInstance()
+    protected static final EELFLogger                         auditLogger         = EELFManager.getInstance()
             .getAuditLogger();
 
     private ModelBpmn                                         modelBpmn;
@@ -58,10 +58,9 @@ public class ModelProperties {
     private final String                                      controlName;
     private final String                                      actionCd;
     // Flag indicate whether it is triggered by Validation Test button from UI
-    private final boolean 									  isTest;
+    private final boolean                                     isTest;
 
     private Global                                            global;
-    private Tca                                               tca;
 
     private final Map<String, ModelElement>                   modelElements       = new ConcurrentHashMap<>();
 
@@ -93,8 +92,8 @@ public class ModelProperties {
      * @throws JsonProcessingException
      * @throws IOException
      */
-    public ModelProperties(String modelName, String controlName, String actionCd, boolean isTest, String modelBpmnPropText,
-            String modelPropText) throws IOException {
+    public ModelProperties(String modelName, String controlName, String actionCd, boolean isTest,
+            String modelBpmnPropText, String modelPropText) throws IOException {
         this.modelName = modelName;
         this.controlName = controlName;
         this.actionCd = actionCd;
@@ -150,7 +149,7 @@ public class ModelProperties {
             Global global = new Global(modelJson);
             vfs = global.getResourceVf();
         } catch (IOException e) {
-            // VF is null
+            logger.warn("no VF found", e);
         }
         String vf = null;
         if (vfs != null && !vfs.isEmpty()) {
@@ -168,13 +167,12 @@ public class ModelProperties {
      * @throws IOException
      */
     public static ModelProperties create(DelegateExecution execution) throws IOException {
-        // String modelProp = (String) execution.getVariable("modelProp");
         String modelProp = new String((byte[]) execution.getVariable("modelProp"));
         String modelBpmnProp = (String) execution.getVariable("modelBpmnProp");
         String modelName = (String) execution.getVariable("modelName");
         String controlName = (String) execution.getVariable("controlName");
         String actionCd = (String) execution.getVariable("actionCd");
-        boolean isTest = (boolean)execution.getVariable("isTest");
+        boolean isTest = (boolean) execution.getVariable("isTest");
 
         return new ModelProperties(modelName, controlName, actionCd, isTest, modelBpmnProp, modelProp);
     }
@@ -303,12 +301,12 @@ public class ModelProperties {
         return actionCd;
     }
 
-	/**
-	 * @return the isTest
-	 */
-	public boolean isTest() {
-		return isTest;
-	}
+    /**
+     * @return the isTest
+     */
+    public boolean isTest() {
+        return isTest;
+    }
 
     /**
      * @return the isCreateRequest
@@ -352,14 +350,4 @@ public class ModelProperties {
         String type = modelElementClasses.get(clazz);
         return (type != null ? (T) modelElements.get(type) : null);
     }
-
-    /**
-     * @return the tca
-     */
-    public Tca getTca() {
-        if (tca == null) {
-            tca = new Tca(this, modelBpmn, modelJson);
-        }
-        return tca;
-    }
 }
diff --git a/src/main/java/org/onap/clamp/clds/model/prop/Policy.java b/src/main/java/org/onap/clamp/clds/model/prop/Policy.java
index 6673af21..452af20c 100644
--- a/src/main/java/org/onap/clamp/clds/model/prop/Policy.java
+++ b/src/main/java/org/onap/clamp/clds/model/prop/Policy.java
@@ -23,14 +23,14 @@
 
 package org.onap.clamp.clds.model.prop;
 
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
 import com.fasterxml.jackson.databind.JsonNode;
 
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
 /**
  * Parse Policy json properties.
  * <p>
@@ -49,12 +49,12 @@ import com.fasterxml.jackson.databind.JsonNode;
  * "vf3RtPi"]}]]}]
  */
 public class Policy extends ModelElement {
-    protected static final EELFLogger       logger      = EELFManager.getInstance().getLogger(Policy.class);
+    protected static final EELFLogger logger      = EELFManager.getInstance().getLogger(Policy.class);
     protected static final EELFLogger auditLogger = EELFManager.getInstance().getAuditLogger();
 
-    private List<PolicyChain>       policyChains;
+    private List<PolicyChain>         policyChains;
 
-    private static final String     TYPE_POLICY = "policy";
+    private static final String       TYPE_POLICY = "policy";
 
     /**
      * Parse Policy given json node.
@@ -64,12 +64,12 @@ public class Policy extends ModelElement {
      * @param modelJson
      */
     public Policy(ModelProperties modelProp, ModelBpmn modelBpmn, JsonNode modelJson) {
-        super(ModelElement.TYPE_POLICY, modelProp, modelBpmn, modelJson);
+        super(TYPE_POLICY, modelProp, modelBpmn, modelJson);
 
         // process policies
-        if (meNode != null) {
-            Iterator<JsonNode> itr = meNode.elements();
-            policyChains = new ArrayList<PolicyChain>();
+        if (modelElementJsonNode != null) {
+            Iterator<JsonNode> itr = modelElementJsonNode.elements();
+            policyChains = new ArrayList<>();
             while (itr.hasNext()) {
                 policyChains.add(new PolicyChain(itr.next()));
             }
diff --git a/src/main/java/org/onap/clamp/clds/model/prop/ResourceGroup.java b/src/main/java/org/onap/clamp/clds/model/prop/ResourceGroup.java
index de98333a..6e986bb0 100644
--- a/src/main/java/org/onap/clamp/clds/model/prop/ResourceGroup.java
+++ b/src/main/java/org/onap/clamp/clds/model/prop/ResourceGroup.java
@@ -23,14 +23,14 @@
 
 package org.onap.clamp.clds.model.prop;
 
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
 import com.fasterxml.jackson.databind.JsonNode;
 
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
 /**
  * Parse Resource Group json properties.
  *
@@ -63,8 +63,8 @@ import com.fasterxml.jackson.databind.JsonNode;
  */
 public class ResourceGroup {
 
-    protected static final EELFLogger          logger      = EELFManager.getInstance().getLogger(ResourceGroup.class);
-    protected static final EELFLogger    auditLogger = EELFManager.getInstance().getAuditLogger();
+    protected static final EELFLogger  logger      = EELFManager.getInstance().getLogger(ResourceGroup.class);
+    protected static final EELFLogger  auditLogger = EELFManager.getInstance().getAuditLogger();
 
     private String                     groupNumber;
     private String                     policyId;
@@ -84,7 +84,7 @@ public class ResourceGroup {
         // process Server_Configurations
         JsonNode serviceConfigurationsNode = node.get(node.size() - 1).get("serviceConfigurations");
         Iterator<JsonNode> itr = serviceConfigurationsNode.elements();
-        serviceConfigurations = new ArrayList<ServiceConfiguration>();
+        serviceConfigurations = new ArrayList<>();
         while (itr.hasNext()) {
             serviceConfigurations.add(new ServiceConfiguration(itr.next()));
         }
diff --git a/src/main/java/org/onap/clamp/clds/model/prop/StringMatch.java b/src/main/java/org/onap/clamp/clds/model/prop/StringMatch.java
index b20db0af..7fcc1b1b 100644
--- a/src/main/java/org/onap/clamp/clds/model/prop/StringMatch.java
+++ b/src/main/java/org/onap/clamp/clds/model/prop/StringMatch.java
@@ -23,14 +23,12 @@
 
 package org.onap.clamp.clds.model.prop;
 
+import com.fasterxml.jackson.databind.JsonNode;
+
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 
-import com.att.eelf.configuration.EELFLogger;
-import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
-
 /**
  * Parse StringMatch json properties.
  * <p>
@@ -62,12 +60,10 @@ import com.fasterxml.jackson.databind.JsonNode;
  *
  */
 public class StringMatch extends ModelElement {
-    protected static final EELFLogger       logger            = EELFManager.getInstance().getLogger(StringMatch.class);
-    protected static final EELFLogger auditLogger       = EELFManager.getInstance().getAuditLogger();
 
-    private List<ResourceGroup>     resourceGroups;
+    private List<ResourceGroup> resourceGroups;
 
-    private static final String     TYPE_STRING_MATCH = "stringMatch";
+    private static final String TYPE_STRING_MATCH = "stringMatch";
 
     /**
      * Parse StringMatch given json node.
@@ -79,9 +75,9 @@ public class StringMatch extends ModelElement {
         super(TYPE_STRING_MATCH, modelProp, modelBpmn, modelJson);
 
         // process Server_Configurations
-        if (meNode != null) {
-            Iterator<JsonNode> itr = meNode.elements();
-            resourceGroups = new ArrayList<ResourceGroup>();
+        if (modelElementJsonNode != null) {
+            Iterator<JsonNode> itr = modelElementJsonNode.elements();
+            resourceGroups = new ArrayList<>();
             while (itr.hasNext()) {
                 resourceGroups.add(new ResourceGroup(itr.next()));
             }
diff --git a/src/main/java/org/onap/clamp/clds/model/prop/Tca.java b/src/main/java/org/onap/clamp/clds/model/prop/Tca.java
index b94f5230..6bc68e23 100644
--- a/src/main/java/org/onap/clamp/clds/model/prop/Tca.java
+++ b/src/main/java/org/onap/clamp/clds/model/prop/Tca.java
@@ -23,14 +23,14 @@
 
 package org.onap.clamp.clds.model.prop;
 
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
 import com.fasterxml.jackson.databind.JsonNode;
 
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
 /**
  * Parse Tca json properties.
  *
@@ -50,12 +50,12 @@ import com.fasterxml.jackson.databind.JsonNode;
  */
 public class Tca extends ModelElement {
 
-    protected static final EELFLogger       logger      = EELFManager.getInstance().getLogger(Tca.class);
+    protected static final EELFLogger logger      = EELFManager.getInstance().getLogger(Tca.class);
     protected static final EELFLogger auditLogger = EELFManager.getInstance().getAuditLogger();
 
-    private List<TcaItem>           tcaItems;
+    private List<TcaItem>             tcaItems;
 
-    private static final String     TYPE_TCA    = "tca";
+    private static final String       TYPE_TCA    = "tca";
 
     /**
      * Parse Tca given json node
@@ -68,9 +68,9 @@ public class Tca extends ModelElement {
         super(TYPE_TCA, modelProp, modelBpmn, modelJson);
 
         // process Server_Configurations
-        if (meNode != null) {
-            Iterator<JsonNode> itr = meNode.elements();
-            tcaItems = new ArrayList<TcaItem>();
+        if (modelElementJsonNode != null) {
+            Iterator<JsonNode> itr = modelElementJsonNode.elements();
+            tcaItems = new ArrayList<>();
             while (itr.hasNext()) {
                 tcaItems.add(new TcaItem(itr.next()));
             }
diff --git a/src/main/java/org/onap/clamp/clds/transform/XslTransformer.java b/src/main/java/org/onap/clamp/clds/transform/XslTransformer.java
index d15f67c7..684bae3f 100644
--- a/src/main/java/org/onap/clamp/clds/transform/XslTransformer.java
+++ b/src/main/java/org/onap/clamp/clds/transform/XslTransformer.java
@@ -34,6 +34,8 @@ import javax.xml.transform.TransformerFactory;
 import javax.xml.transform.stream.StreamResult;
 import javax.xml.transform.stream.StreamSource;
 
+import org.onap.clamp.clds.util.ResourceFileUtil;
+
 /**
  * XSL Transformer.
  */
@@ -43,7 +45,7 @@ public class XslTransformer {
 
     public void setXslResourceName(String xslResourceName) throws TransformerConfigurationException {
         TransformerFactory tfactory = TransformerFactory.newInstance();
-        templates = tfactory.newTemplates(new StreamSource(TransformUtil.getResourceAsStream(xslResourceName)));
+        templates = tfactory.newTemplates(new StreamSource(ResourceFileUtil.getResourceAsStream(xslResourceName)));
     }
 
     /**
@@ -53,7 +55,7 @@ public class XslTransformer {
      * @throws TransformerException
      */
     public String doXslTransformToString(String xml) throws TransformerException {
-        StringWriter output = new StringWriter(4000);
+        StringWriter output = new StringWriter(4096);
 
         Transformer transformer = templates.newTransformer();
         transformer.transform(new StreamSource(new StringReader(xml)), new StreamResult(output));