Refactor Delete Anchor functionality

- Added a delete DataNode functionality in the CpsDataService
- CpsAdminService uses CpsDataService to delete DataNodes

Issue-ID: CPS-791
Signed-off-by: Renu Kumari <renu.kumari@bell.ca>
Change-Id: I090500dbc4a2ccf061dc105f979472137d43b06d

4 files changed, 71 insertions, 56 deletions

diff --git a/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java b/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java
index f455e47efd..d2482d50a6 100644
--- a/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java
+++ b/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java
@@ -2,7 +2,7 @@
  *  ============LICENSE_START=======================================================
  *  Copyright (C) 2020 Nordix Foundation
  *  Modifications Copyright (C) 2021 Pantheon.tech
- *  Modifications Copyright (C) 2021 Bell Canada
+ *  Modifications Copyright (C) 2021-2022 Bell Canada
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -23,7 +23,6 @@
 package org.onap.cps.api;
 
 import java.time.OffsetDateTime;
-import org.checkerframework.checker.nullness.qual.NonNull;
 import org.onap.cps.spi.FetchDescendantsOption;
 import org.onap.cps.spi.model.DataNode;
 
@@ -40,8 +39,7 @@ public interface CpsDataService {
      * @param jsonData      json data
      * @param observedTimestamp observedTimestamp
      */
-    void saveData(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String jsonData,
-        OffsetDateTime observedTimestamp);
+    void saveData(String dataspaceName, String anchorName, String jsonData, OffsetDateTime observedTimestamp);
 
     /**
      * Persists child data fragment under existing data node for the given anchor and dataspace.
@@ -52,8 +50,8 @@ public interface CpsDataService {
      * @param jsonData        json data
      * @param observedTimestamp observedTimestamp
      */
-    void saveData(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentNodeXpath,
-        @NonNull String jsonData, OffsetDateTime observedTimestamp);
+    void saveData(String dataspaceName, String anchorName, String parentNodeXpath, String jsonData,
+        OffsetDateTime observedTimestamp);
 
     /**
      * Persists child data fragment representing one or more list elements under existing data node for the
@@ -65,9 +63,8 @@ public interface CpsDataService {
      * @param jsonData          json data representing list element(s)
      * @param observedTimestamp observedTimestamp
      */
-    void saveListElements(@NonNull String dataspaceName, @NonNull String anchorName,
-                              @NonNull String parentNodeXpath,
-                              @NonNull String jsonData, OffsetDateTime observedTimestamp);
+    void saveListElements(String dataspaceName, String anchorName, String parentNodeXpath, String jsonData,
+        OffsetDateTime observedTimestamp);
 
     /**
      * Retrieves datanode by XPath for given dataspace and anchor.
@@ -79,8 +76,8 @@ public interface CpsDataService {
      *                               (recursively) as well
      * @return data node object
      */
-    DataNode getDataNode(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String xpath,
-        @NonNull FetchDescendantsOption fetchDescendantsOption);
+    DataNode getDataNode(String dataspaceName, String anchorName, String xpath,
+        FetchDescendantsOption fetchDescendantsOption);
 
     /**
      * Updates data node for given dataspace and anchor using xpath to parent node.
@@ -91,8 +88,8 @@ public interface CpsDataService {
      * @param jsonData        json data
      * @param observedTimestamp observedTimestamp
      */
-    void updateNodeLeaves(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentNodeXpath,
-        @NonNull String jsonData, OffsetDateTime observedTimestamp);
+    void updateNodeLeaves(String dataspaceName, String anchorName, String parentNodeXpath, String jsonData,
+        OffsetDateTime observedTimestamp);
 
     /**
      * Replaces existing data node content including descendants.
@@ -103,8 +100,8 @@ public interface CpsDataService {
      * @param jsonData        json data
      * @param observedTimestamp observedTimestamp
      */
-    void replaceNodeTree(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentNodeXpath,
-        @NonNull String jsonData, OffsetDateTime observedTimestamp);
+    void replaceNodeTree(String dataspaceName, String anchorName, String parentNodeXpath, String jsonData,
+        OffsetDateTime observedTimestamp);
 
     /**
      * Replaces list content by removing all existing elements and inserting the given new elements as json
@@ -116,8 +113,8 @@ public interface CpsDataService {
      * @param jsonData          json data representing the new list elements
      * @param observedTimestamp observedTimestamp
      */
-    void replaceListContent(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentNodeXpath,
-                            @NonNull String jsonData, OffsetDateTime observedTimestamp);
+    void replaceListContent(String dataspaceName, String anchorName, String parentNodeXpath, String jsonData,
+        OffsetDateTime observedTimestamp);
 
     /**
      * Deletes data node for given anchor and dataspace.
@@ -127,8 +124,17 @@ public interface CpsDataService {
      * @param dataNodeXpath data node xpath
      * @param observedTimestamp observed timestamp
      */
-    void deleteDataNode(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String dataNodeXpath,
-                        OffsetDateTime observedTimestamp);
+    void deleteDataNode(String dataspaceName, String anchorName, String dataNodeXpath,
+        OffsetDateTime observedTimestamp);
+
+    /**
+     * Deletes all data nodes for a given anchor in a dataspace.
+     *
+     * @param dataspaceName     dataspace name
+     * @param anchorName       anchor name
+     * @param observedTimestamp observed timestamp
+     */
+    void deleteDataNodes(String dataspaceName, String anchorName, OffsetDateTime observedTimestamp);
 
     /**
      * Deletes a list or a list-element under given anchor and dataspace.
@@ -138,8 +144,8 @@ public interface CpsDataService {
      * @param listElementXpath list element xpath
      * @param observedTimestamp observedTimestamp
      */
-    void deleteListOrListElement(@NonNull String dataspaceName, @NonNull String anchorName,
-                             @NonNull String listElementXpath, OffsetDateTime observedTimestamp);
+    void deleteListOrListElement(String dataspaceName, String anchorName, String listElementXpath,
+        OffsetDateTime observedTimestamp);
 
     /**
      * Updates leaves of DataNode for given dataspace and anchor using xpath, along with the leaves of each Child Data
diff --git a/cps-service/src/main/java/org/onap/cps/api/impl/CpsAdminServiceImpl.java b/cps-service/src/main/java/org/onap/cps/api/impl/CpsAdminServiceImpl.java
index d30a6571d8..1013addbe1 100755
--- a/cps-service/src/main/java/org/onap/cps/api/impl/CpsAdminServiceImpl.java
+++ b/cps-service/src/main/java/org/onap/cps/api/impl/CpsAdminServiceImpl.java
@@ -22,19 +22,24 @@
 
 package org.onap.cps.api.impl;
 
+import java.time.OffsetDateTime;
 import java.util.Collection;
 import java.util.stream.Collectors;
+import lombok.AllArgsConstructor;
 import org.onap.cps.api.CpsAdminService;
+import org.onap.cps.api.CpsDataService;
 import org.onap.cps.spi.CpsAdminPersistenceService;
 import org.onap.cps.spi.model.Anchor;
-import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 
 @Component("CpsAdminServiceImpl")
+@AllArgsConstructor(onConstructor = @__(@Lazy))
 public class CpsAdminServiceImpl implements CpsAdminService {
 
-    @Autowired
-    private CpsAdminPersistenceService cpsAdminPersistenceService;
+    private final CpsAdminPersistenceService cpsAdminPersistenceService;
+    @Lazy
+    private final CpsDataService cpsDataService;
 
     @Override
     public void createDataspace(final String dataspaceName) {
@@ -68,6 +73,7 @@ public class CpsAdminServiceImpl implements CpsAdminService {
 
     @Override
     public void deleteAnchor(final String dataspaceName, final String anchorName) {
+        cpsDataService.deleteDataNodes(dataspaceName, anchorName, OffsetDateTime.now());
         cpsAdminPersistenceService.deleteAnchor(dataspaceName, anchorName);
     }
 
diff --git a/cps-service/src/main/java/org/onap/cps/api/impl/CpsDataServiceImpl.java b/cps-service/src/main/java/org/onap/cps/api/impl/CpsDataServiceImpl.java
index a23bc95f3e..e292bbe77e 100755
--- a/cps-service/src/main/java/org/onap/cps/api/impl/CpsDataServiceImpl.java
+++ b/cps-service/src/main/java/org/onap/cps/api/impl/CpsDataServiceImpl.java
@@ -24,6 +24,7 @@ package org.onap.cps.api.impl;
 
 import java.time.OffsetDateTime;
 import java.util.Collection;
+import lombok.AllArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.onap.cps.api.CpsAdminService;
 import org.onap.cps.api.CpsDataService;
@@ -37,26 +38,19 @@ import org.onap.cps.spi.model.DataNodeBuilder;
 import org.onap.cps.utils.YangUtils;
 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 @Service
 @Slf4j
+@AllArgsConstructor
 public class CpsDataServiceImpl implements CpsDataService {
 
     private static final String ROOT_NODE_XPATH = "/";
 
-    @Autowired
-    private CpsDataPersistenceService cpsDataPersistenceService;
-
-    @Autowired
-    private CpsAdminService cpsAdminService;
-
-    @Autowired
-    private YangTextSchemaSourceSetCache yangTextSchemaSourceSetCache;
-
-    @Autowired
-    private NotificationService notificationService;
+    private final CpsDataPersistenceService cpsDataPersistenceService;
+    private final CpsAdminService cpsAdminService;
+    private final YangTextSchemaSourceSetCache yangTextSchemaSourceSetCache;
+    private final NotificationService notificationService;
 
     @Override
     public void saveData(final String dataspaceName, final String anchorName, final String jsonData,
@@ -138,6 +132,12 @@ public class CpsDataServiceImpl implements CpsDataService {
     }
 
     @Override
+    public void deleteDataNodes(final String dataspaceName, final String anchorName,
+        final OffsetDateTime observedTimestamp) {
+        cpsDataPersistenceService.deleteDataNodes(dataspaceName, anchorName);
+    }
+
+    @Override
     public void deleteListOrListElement(final String dataspaceName, final String anchorName, final String listNodeXpath,
         final OffsetDateTime observedTimestamp) {
         cpsDataPersistenceService.deleteListDataNode(dataspaceName, anchorName, listNodeXpath);
diff --git a/cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java b/cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java
index b8c472f277..fd658861c2 100644
--- a/cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java
+++ b/cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java
@@ -2,6 +2,7 @@
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2020 Nordix Foundation.
  *  Modifications Copyright (C) 2021 Pantheon.tech
+ *  Modifications Copyright (C) 2022 Bell Canada
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,7 +24,6 @@ package org.onap.cps.spi;
 
 import java.util.Collection;
 import java.util.Map;
-import org.checkerframework.checker.nullness.qual.NonNull;
 import org.onap.cps.spi.model.DataNode;
 
 /*
@@ -40,8 +40,7 @@ public interface CpsDataPersistenceService {
      * @param anchorName    anchor name
      * @param dataNode      data node
      */
-    void storeDataNode(@NonNull String dataspaceName, @NonNull String anchorName,
-        @NonNull DataNode dataNode);
+    void storeDataNode(String dataspaceName, String anchorName, DataNode dataNode);
 
     /**
      * Add a child to a Fragment.
@@ -51,8 +50,7 @@ public interface CpsDataPersistenceService {
      * @param parentXpath   parent xpath
      * @param dataNode      dataNode
      */
-    void addChildDataNode(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentXpath,
-        @NonNull DataNode dataNode);
+    void addChildDataNode(String dataspaceName, String anchorName, String parentXpath, DataNode dataNode);
 
     /**
      * Adds list child elements to a Fragment.
@@ -63,8 +61,8 @@ public interface CpsDataPersistenceService {
      * @param listElementsCollection collection of data nodes representing list elements
      */
 
-    void addListElements(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentNodeXpath,
-        @NonNull Collection<DataNode> listElementsCollection);
+    void addListElements(String dataspaceName, String anchorName, String parentNodeXpath,
+        Collection<DataNode> listElementsCollection);
 
     /**
      * Retrieves datanode by XPath for given dataspace and anchor.
@@ -76,8 +74,8 @@ public interface CpsDataPersistenceService {
      *                               (recursively) as well
      * @return data node object
      */
-    DataNode getDataNode(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String xpath,
-        @NonNull FetchDescendantsOption fetchDescendantsOption);
+    DataNode getDataNode(String dataspaceName, String anchorName, String xpath,
+        FetchDescendantsOption fetchDescendantsOption);
 
 
     /**
@@ -88,8 +86,7 @@ public interface CpsDataPersistenceService {
      * @param xpath         xpath
      * @param leaves        the leaves as a map where key is a leaf name and a value is a leaf value
      */
-    void updateDataLeaves(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String xpath,
-        @NonNull Map<String, Object> leaves);
+    void updateDataLeaves(String dataspaceName, String anchorName, String xpath, Map<String, Object> leaves);
 
     /**
      * Replaces existing data node content including descendants.
@@ -98,7 +95,7 @@ public interface CpsDataPersistenceService {
      * @param anchorName    anchor name
      * @param dataNode      data node
      */
-    void replaceDataNodeTree(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull DataNode dataNode);
+    void replaceDataNodeTree(String dataspaceName, String anchorName, DataNode dataNode);
 
     /**
      * Replaces list content by removing all existing elements and inserting the given new elements
@@ -109,8 +106,8 @@ public interface CpsDataPersistenceService {
      * @param parentNodeXpath parent node xpath
      * @param newListElements collection of data nodes representing the new list content
      */
-    void replaceListContent(@NonNull String dataspaceName, @NonNull String anchorName,
-                            @NonNull String parentNodeXpath, @NonNull Collection<DataNode> newListElements);
+    void replaceListContent(String dataspaceName, String anchorName,
+                            String parentNodeXpath, Collection<DataNode> newListElements);
 
     /**
      * Deletes any dataNode, yang container or yang list or yang list element.
@@ -119,8 +116,15 @@ public interface CpsDataPersistenceService {
      * @param anchorName      anchor name
      * @param targetXpath     xpath to list or list element (include [@key=value] to delete a single list element)
      */
-    void deleteDataNode(@NonNull String dataspaceName, @NonNull String anchorName,
-                        @NonNull String targetXpath);
+    void deleteDataNode(String dataspaceName, String anchorName, String targetXpath);
+
+    /**
+     * Deletes all dataNodes in a given anchor.
+     *
+     * @param dataspaceName   dataspace name
+     * @param anchorName      anchor name
+     */
+    void deleteDataNodes(String dataspaceName, String anchorName);
 
     /**
      * Deletes existing a single list element or the whole list.
@@ -129,8 +133,7 @@ public interface CpsDataPersistenceService {
      * @param anchorName      anchor name
      * @param targetXpath     xpath to list or list element (include [@key=value] to delete a single list element)
      */
-    void deleteListDataNode(@NonNull String dataspaceName, @NonNull String anchorName,
-                                 @NonNull String targetXpath);
+    void deleteListDataNode(String dataspaceName, String anchorName, String targetXpath);
 
     /**
      * Get a datanode by cps path.
@@ -142,7 +145,7 @@ public interface CpsDataPersistenceService {
      *                               included in the output
      * @return the data nodes found i.e. 0 or more data nodes
      */
-    Collection<DataNode> queryDataNodes(@NonNull String dataspaceName, @NonNull String anchorName,
-        @NonNull String cpsPath, @NonNull FetchDescendantsOption fetchDescendantsOption);
+    Collection<DataNode> queryDataNodes(String dataspaceName, String anchorName,
+        String cpsPath, FetchDescendantsOption fetchDescendantsOption);
 
 }