Create child data node (part 1): CPS service + REST

Issue-ID: CPS-337
Change-Id: I9c5c62d144b5301ac80e2b82a5cc66a980dad011
Signed-off-by: Ruslan Kashapov <ruslan.kashapov@pantheon.tech>

3 files changed, 45 insertions, 9 deletions

diff --git a/cps-rest/docs/api/swagger/cpsData.yml b/cps-rest/docs/api/swagger/cpsData.yml
index 24644899a4..54c89661b9 100755
--- a/cps-rest/docs/api/swagger/cpsData.yml
+++ b/cps-rest/docs/api/swagger/cpsData.yml
@@ -33,6 +33,7 @@ nodesByDataspaceAndAnchor:
     parameters:
       - $ref: 'components.yml#/components/parameters/dataspaceNameInPath'
       - $ref: 'components.yml#/components/parameters/anchorNameInPath'
+      - $ref: 'components.yml#/components/parameters/xpathInQuery'
     requestBody:
       required: true
       content:
diff --git a/cps-rest/src/main/java/org/onap/cps/rest/controller/DataRestController.java b/cps-rest/src/main/java/org/onap/cps/rest/controller/DataRestController.java
index f466ebcef0..3385f35fe8 100755
--- a/cps-rest/src/main/java/org/onap/cps/rest/controller/DataRestController.java
+++ b/cps-rest/src/main/java/org/onap/cps/rest/controller/DataRestController.java
@@ -21,8 +21,6 @@
 
 package org.onap.cps.rest.controller;
 
-import javax.validation.Valid;
-import javax.validation.constraints.NotNull;
 import org.onap.cps.api.CpsDataService;
 import org.onap.cps.rest.api.CpsDataApi;
 import org.onap.cps.spi.FetchDescendantsOption;
@@ -38,13 +36,19 @@ import org.springframework.web.bind.annotation.RestController;
 @RequestMapping("${rest.api.cps-base-path}")
 public class DataRestController implements CpsDataApi {
 
+    private static final String ROOT_XPATH = "/";
+
     @Autowired
     private CpsDataService cpsDataService;
 
     @Override
-    public ResponseEntity<String> createNode(@Valid final String jsonData, @NotNull final String dataspaceName,
-        @NotNull @Valid final String anchorName) {
-        cpsDataService.saveData(dataspaceName, anchorName, jsonData);
+    public ResponseEntity<String> createNode(final String jsonData, final String dataspaceName, final String anchorName,
+        final String parentNodeXpath) {
+        if (isRootXpath(parentNodeXpath)) {
+            cpsDataService.saveData(dataspaceName, anchorName, jsonData);
+        } else {
+            cpsDataService.saveData(dataspaceName, anchorName, parentNodeXpath, jsonData);
+        }
         return new ResponseEntity<>(HttpStatus.CREATED);
     }
 
@@ -56,7 +60,7 @@ public class DataRestController implements CpsDataApi {
     @Override
     public ResponseEntity<Object> getNodeByDataspaceAndAnchor(final String dataspaceName, final String anchorName,
         final String xpath, final Boolean includeDescendants) {
-        if ("/".equals(xpath)) {
+        if (isRootXpath(xpath)) {
             return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
         }
         final FetchDescendantsOption fetchDescendantsOption = Boolean.TRUE.equals(includeDescendants)
@@ -79,4 +83,8 @@ public class DataRestController implements CpsDataApi {
         cpsDataService.replaceNodeTree(dataspaceName, anchorName, parentNodeXpath, jsonData);
         return new ResponseEntity<>(HttpStatus.OK);
     }
+
+    private static boolean isRootXpath(final String xpath) {
+        return ROOT_XPATH.equals(xpath);
+    }
 }
diff --git a/cps-rest/src/test/groovy/org/onap/cps/rest/controller/DataRestControllerSpec.groovy b/cps-rest/src/test/groovy/org/onap/cps/rest/controller/DataRestControllerSpec.groovy
index ef43641ea8..713dda1403 100755
--- a/cps-rest/src/test/groovy/org/onap/cps/rest/controller/DataRestControllerSpec.groovy
+++ b/cps-rest/src/test/groovy/org/onap/cps/rest/controller/DataRestControllerSpec.groovy
@@ -90,7 +90,8 @@ class DataRestControllerSpec extends Specification {
         dataNodeBaseEndpoint = "$basePath/v1/dataspaces/$dataspaceName"
     }
 
-    def 'Create a node.'() {
+    @Unroll
+    def 'Create a node: #scenario.'() {
         given: 'some json to create a data node'
             def endpoint = "$dataNodeBaseEndpoint/anchors/$anchorName/nodes"
             def json = 'some json (this is not validated)'
@@ -98,12 +99,38 @@ class DataRestControllerSpec extends Specification {
             def response =
                     mvc.perform(
                             post(endpoint)
-                                    .contentType(MediaType.APPLICATION_JSON).content(json))
-                            .andReturn().response
+                                    .contentType(MediaType.APPLICATION_JSON)
+                                    .param('xpath', parentNodeXpath)
+                                    .content(json)
+                    ).andReturn().response
         then: 'a created response is returned'
             response.status == HttpStatus.CREATED.value()
         then: 'the java API was called with the correct parameters'
             1 * mockCpsDataService.saveData(dataspaceName, anchorName, json)
+        where: 'following xpath parameters are are used'
+            scenario                     | parentNodeXpath
+            'no xpath parameter'         | ''
+            'xpath parameter point root' | '/'
+    }
+
+    def 'Create a child node'() {
+        given: 'some json to create a data node'
+            def endpoint = "$dataNodeBaseEndpoint/anchors/$anchorName/nodes"
+            def json = 'some json (this is not validated)'
+        and: 'parent node xpath'
+            def parentNodeXpath = 'some xpath'
+        when: 'post is invoked with datanode endpoint and json'
+            def response =
+                    mvc.perform(
+                            post(endpoint)
+                                    .contentType(MediaType.APPLICATION_JSON)
+                                    .param('xpath', parentNodeXpath)
+                                    .content(json)
+                    ).andReturn().response
+        then: 'a created response is returned'
+            response.status == HttpStatus.CREATED.value()
+        then: 'the java API was called with the correct parameters'
+            1 * mockCpsDataService.saveData(dataspaceName, anchorName, parentNodeXpath, json)
     }
 
     @Unroll