add new map server endpoint for topology

src/main/java/org/gridsuite/study/server/controller/StudyController.java

@@ -457,6 +457,18 @@ public ResponseEntity<String> getVoltageLevelSwitches(
         return ResponseEntity.ok().contentType(MediaType.APPLICATION_JSON).body(studyService.getVoltageLevelSwitches(nodeUuid, rootNetworkUuid, voltageLevelId, inUpstreamBuiltParentNode));
     }
 
+    @GetMapping(value = "/studies/{studyUuid}/root-networks/{rootNetworkUuid}/nodes/{nodeUuid}/network/voltage-levels/{voltageLevelId}/topology")
+    @Operation(summary = "get the topology for a given network and a given voltage level")
+    @ApiResponse(responseCode = "200", description = "The topology of given voltage level")
+    public ResponseEntity<String> getVoltageLevelTopology(
+            @PathVariable("studyUuid") UUID studyUuid,
+            @PathVariable("rootNetworkUuid") UUID rootNetworkUuid,
+            @PathVariable("nodeUuid") UUID nodeUuid,
+            @PathVariable("voltageLevelId") String voltageLevelId,
+            @Parameter(description = "Should get in upstream built node ?") @RequestParam(value = "inUpstreamBuiltParentNode", required = false, defaultValue = "false") boolean inUpstreamBuiltParentNode) {
+        return ResponseEntity.ok().contentType(MediaType.APPLICATION_JSON).body(studyService.getVoltageLevelTopology(nodeUuid, rootNetworkUuid, voltageLevelId, inUpstreamBuiltParentNode));
+    }
+
     @GetMapping(value = "/studies/{studyUuid}/root-networks/{rootNetworkUuid}/nodes/{nodeUuid}/network/voltage-levels/{voltageLevelId}/substation-id")
     @Operation(summary = "get the substation ID for a given network and a given voltage level")
     @ApiResponses(value = {@ApiResponse(responseCode = "200", description = "The substation Id for a voltageLevel")})

src/main/java/org/gridsuite/study/server/service/NetworkMapService.java

@@ -267,6 +267,20 @@ public String getVoltageLevelSwitches(UUID networkUuid, String variantId,
                 }, networkUuid, voltageLevelId).getBody();
     }
 
+    public String getVoltageLevelTopology(UUID networkUuid, String variantId,
+                                          String voltageLevelId,
+                                          String topologyPath) {
+        UriComponentsBuilder builder = UriComponentsBuilder.fromPath(DELIMITER + NETWORK_MAP_API_VERSION
+                + "/networks/{networkUuid}/voltage-levels/{voltageLevelId}/" + topologyPath);
+        if (!StringUtils.isBlank(variantId)) {
+            builder = builder.queryParam(QUERY_PARAM_VARIANT_ID, variantId);
+        }
+
+        return restTemplate.exchange(networkMapServerBaseUri + builder.build().toUriString(), HttpMethod.GET, null,
+                new ParameterizedTypeReference<String>() {
+                }, networkUuid, voltageLevelId).getBody();
+    }
+
     public void setNetworkMapServerBaseUri(String networkMapServerBaseUri) {
         this.networkMapServerBaseUri = networkMapServerBaseUri;
     }

src/main/java/org/gridsuite/study/server/service/StudyService.java

@@ -1841,6 +1841,14 @@ public String getVoltageLevelSwitches(UUID nodeUuid, UUID rootNetworkUuid, Strin
         return networkMapService.getVoltageLevelSwitches(networkUuid, variantId, voltageLevelId, switchesPath);
     }
 
+    public String getVoltageLevelTopology(UUID nodeUuid, UUID rootNetworkUuid, String voltageLevelId,
+                                          String topologyPath) {
+        UUID networkUuid = rootNetworkService.getNetworkUuid(rootNetworkUuid);
+        String variantId = networkModificationTreeService.getVariantId(nodeUuid, rootNetworkUuid);
+
+        return networkMapService.getVoltageLevelTopology(networkUuid, variantId, voltageLevelId, topologyPath);
+    }
+
     public String getVoltageLevelSubstationId(UUID studyUuid, UUID nodeUuid, UUID rootNetworkUuid, String voltageLevelId, boolean inUpstreamBuiltParentNode) {
         UUID nodeUuidToSearchIn = getNodeUuidToSearchIn(nodeUuid, rootNetworkUuid, inUpstreamBuiltParentNode);
         return getVoltageLevelSubstationId(nodeUuidToSearchIn, rootNetworkUuid, voltageLevelId);
@@ -1856,6 +1864,11 @@ public String getVoltageLevelSwitches(UUID nodeUuid, UUID rootNetworkUuid, Strin
         return getVoltageLevelSwitches(nodeUuidToSearchIn, rootNetworkUuid, voltageLevelId, "switches");
     }
 
+    public String getVoltageLevelTopology(UUID nodeUuid, UUID rootNetworkUuid, String voltageLevelId, boolean inUpstreamBuiltParentNode) {
+        UUID nodeUuidToSearchIn = getNodeUuidToSearchIn(nodeUuid, rootNetworkUuid, inUpstreamBuiltParentNode);
+        return getVoltageLevelTopology(nodeUuidToSearchIn, rootNetworkUuid, voltageLevelId, "topology");
+    }
+
     @Transactional
     public void buildNode(@NonNull UUID studyUuid, @NonNull UUID nodeUuid, @NonNull UUID rootNetworkUuid, @NonNull String userId) {
         buildNode(studyUuid, nodeUuid, rootNetworkUuid, userId, null);