Add schema description endpoint

pom.xml

@@ -128,6 +128,11 @@
         </dependency>
 
         <!-- Runtime dependencies -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.module</groupId>
+            <artifactId>jackson-module-jsonSchema</artifactId>
+            <version>2.15.2</version>
+        </dependency>
         <dependency>
             <groupId>com.powsybl</groupId>
             <artifactId>powsybl-config-classic</artifactId>

src/main/java/org/gridsuite/network/map/NetworkMapApi.java

@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2025, RTE (http://www.rte-france.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package org.gridsuite.network.map;
+
+/**
+ * @author Hugo Marcellin <hugo.marcelin at rte-france.com>
+ */
+
+public final class NetworkMapApi {
+
+    private NetworkMapApi() {
+    }
+
+    public static final String API_VERSION = "v1";
+}

src/main/java/org/gridsuite/network/map/NetworkMapController.java

@@ -16,6 +16,7 @@
 import lombok.AllArgsConstructor;
 import org.gridsuite.network.map.dto.*;
 import org.gridsuite.network.map.dto.definition.hvdc.HvdcShuntCompensatorsInfos;
+import org.gridsuite.network.map.services.NetworkMapService;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.web.bind.annotation.*;
 
@@ -31,14 +32,11 @@
  * @author Franck Lecuyer <franck.lecuyer at rte-france.com>
  */
 @RestController
-@RequestMapping(value = "/" + NetworkMapController.API_VERSION + "/")
-@Tag(name = "network-map-server")
+@RequestMapping(value = "/" + NetworkMapApi.API_VERSION + "/")
+@Tag(name = "Network map server")
 @ComponentScan(basePackageClasses = NetworkMapService.class)
 @AllArgsConstructor
 public class NetworkMapController {
-
-    public static final String API_VERSION = "v1";
-
     private final NetworkMapService networkMapService;
 
     @PostMapping(value = "/networks/{networkUuid}/elements-ids", produces = APPLICATION_JSON_VALUE)

src/main/java/org/gridsuite/network/map/NetworkMapSwaggerConfig.java

@@ -22,6 +22,6 @@ public OpenAPI createOpenApi() {
             .info(new Info()
                 .title("Network map API")
                 .description("This is the documentation of network map REST API")
-                .version(NetworkMapController.API_VERSION));
+                .version(NetworkMapApi.API_VERSION));
     }
 }

src/main/java/org/gridsuite/network/map/SchemaController.java

@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) 2025, RTE (http://www.rte-france.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package org.gridsuite.network.map;
+
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.module.jsonSchema.JsonSchema;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.AllArgsConstructor;
+import org.gridsuite.network.map.dto.ElementInfos.InfoType;
+import org.gridsuite.network.map.dto.ElementType;
+import org.gridsuite.network.map.services.SchemaService;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.server.ResponseStatusException;
+
+@RestController
+@RequestMapping(value = "/" + NetworkMapApi.API_VERSION + "/schemas")
+@Tag(name = "Network map server - Schemas")
+@AllArgsConstructor
+public class SchemaController {
+    public static final String APPLICATION_JSON_SCHEMA_VALUE = "application/schema+json";
+    private final SchemaService schemaService;
+
+    @GetMapping(value = "/{elementType}/{infoType}", produces = APPLICATION_JSON_SCHEMA_VALUE)
+    @Operation(summary = "Get network elements")
+    @ApiResponse(responseCode = "200", description = "Elements description")
+    public JsonSchema getElementSchema(@Parameter(description = "Element type") @PathVariable(name = "elementType") ElementType elementType,
+                                   @Parameter(description = "Info type") @PathVariable(name = "infoType") InfoType infoType) {
+        try {
+            return schemaService.getSchema(elementType, infoType);
+        } catch (final UnsupportedOperationException | JsonMappingException ex) {
+            throw new ResponseStatusException(HttpStatus.NOT_IMPLEMENTED, "The view " + infoType + " for " + elementType + " type is not available yet.");
+        }
+    }
+}

src/main/java/org/gridsuite/network/map/NetworkMapService.java → src/main/java/org/gridsuite/network/map/services/NetworkMapService.java

@@ -4,7 +4,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
-package org.gridsuite.network.map;
+package org.gridsuite.network.map.services;
 
 import com.powsybl.commons.PowsyblException;
 import com.powsybl.iidm.network.*;

src/main/java/org/gridsuite/network/map/services/SchemaService.java

@@ -0,0 +1,76 @@
+/**
+ * Copyright (c) 2025, RTE (http://www.rte-france.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package org.gridsuite.network.map.services;
+
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.module.jsonSchema.JsonSchema;
+import com.fasterxml.jackson.module.jsonSchema.JsonSchemaGenerator;
+import lombok.AllArgsConstructor;
+import lombok.NonNull;
+import org.gridsuite.network.map.dto.ElementInfos.InfoType;
+import org.gridsuite.network.map.dto.ElementType;
+import org.gridsuite.network.map.dto.definition.battery.BatteryTabInfos;
+import org.gridsuite.network.map.dto.definition.branch.BranchTabInfos;
+import org.gridsuite.network.map.dto.definition.branch.line.LineTabInfos;
+import org.gridsuite.network.map.dto.definition.branch.twowindingstransformer.TwoWindingsTransformerTabInfos;
+import org.gridsuite.network.map.dto.definition.bus.BusTabInfos;
+import org.gridsuite.network.map.dto.definition.busbarsection.BusBarSectionTabInfos;
+import org.gridsuite.network.map.dto.definition.danglingline.DanglingLineTabInfos;
+import org.gridsuite.network.map.dto.definition.generator.GeneratorTabInfos;
+import org.gridsuite.network.map.dto.definition.hvdc.HvdcTabInfos;
+import org.gridsuite.network.map.dto.definition.lccconverterstation.LccConverterStationTabInfos;
+import org.gridsuite.network.map.dto.definition.load.LoadTabInfos;
+import org.gridsuite.network.map.dto.definition.shuntcompensator.ShuntCompensatorTabInfos;
+import org.gridsuite.network.map.dto.definition.staticvarcompensator.StaticVarCompensatorTabInfos;
+import org.gridsuite.network.map.dto.definition.substation.SubstationTabInfos;
+import org.gridsuite.network.map.dto.definition.threewindingstransformer.ThreeWindingsTransformerTabInfos;
+import org.gridsuite.network.map.dto.definition.tieline.TieLineTabInfos;
+import org.gridsuite.network.map.dto.definition.voltagelevel.VoltageLevelTabInfos;
+import org.gridsuite.network.map.dto.definition.vscconverterstation.VscConverterStationTabInfos;
+import org.springframework.stereotype.Service;
+
+@Service
+@AllArgsConstructor
+public class SchemaService {
+
+    private final ObjectMapper objectMapper;
+
+    /**
+     * @apiNote use class instance to be more secure with enum and classes rename/moving/etc with IDE
+     */
+    private static Class<?> getTabInfosClass(final ElementType elementType) {
+        return switch (elementType) {
+            case BATTERY -> BatteryTabInfos.class;
+            case BUS -> BusTabInfos.class;
+            case BUSBAR_SECTION -> BusBarSectionTabInfos.class;
+            case DANGLING_LINE -> DanglingLineTabInfos.class;
+            case GENERATOR -> GeneratorTabInfos.class;
+            case HVDC_LINE, HVDC_LINE_LCC, HVDC_LINE_VSC -> HvdcTabInfos.class;
+            case LCC_CONVERTER_STATION -> LccConverterStationTabInfos.class;
+            case LINE -> LineTabInfos.class;
+            case LOAD -> LoadTabInfos.class;
+            case SHUNT_COMPENSATOR -> ShuntCompensatorTabInfos.class;
+            case STATIC_VAR_COMPENSATOR -> StaticVarCompensatorTabInfos.class;
+            case SUBSTATION -> SubstationTabInfos.class;
+            case THREE_WINDINGS_TRANSFORMER -> ThreeWindingsTransformerTabInfos.class;
+            case TIE_LINE -> TieLineTabInfos.class;
+            case TWO_WINDINGS_TRANSFORMER -> TwoWindingsTransformerTabInfos.class;
+            case VOLTAGE_LEVEL -> VoltageLevelTabInfos.class;
+            case VSC_CONVERTER_STATION -> VscConverterStationTabInfos.class;
+            case BRANCH -> BranchTabInfos.class;
+        };
+    }
+
+    public JsonSchema getSchema(@NonNull final ElementType elementType, @NonNull final InfoType infoType) throws JsonMappingException {
+        if (infoType != InfoType.TAB) {
+            throw new UnsupportedOperationException("This info type is not currently supported.");
+        }
+        JsonSchemaGenerator schemaGen = new JsonSchemaGenerator(objectMapper);
+        return schemaGen.generateSchema(getTabInfosClass(elementType));
+    }
+}

src/test/java/org/gridsuite/network/map/ListHandlingControllerTest.java

@@ -7,6 +7,7 @@
 
 import org.gridsuite.network.map.dto.ElementType;
 import org.gridsuite.network.map.dto.InfoTypeParameters;
+import org.gridsuite.network.map.services.NetworkMapService;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;

src/test/java/org/gridsuite/network/map/SchemaControllerTest.java

@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) 2025, RTE (http://www.rte-france.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package org.gridsuite.network.map;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectWriter;
+import com.fasterxml.jackson.module.jsonSchema.JsonSchema;
+import org.apache.commons.lang3.tuple.Pair;
+import org.gridsuite.network.map.dto.ElementInfos.InfoType;
+import org.gridsuite.network.map.dto.ElementType;
+import org.gridsuite.network.map.services.SchemaService;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.boot.test.mock.mockito.SpyBean;
+import org.springframework.lang.NonNull;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.ResultActions;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Stream;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.log;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@WebMvcTest(SchemaController.class)
+class SchemaControllerTest {
+    @Autowired
+    private MockMvc mockMvc;
+
+    @SpyBean
+    private SchemaService schemaService;
+
+    private static Stream<Arguments> schemaRequestValues() {
+        final List<Pair<ElementType, InfoType>> cases = new ArrayList<>();
+        for (ElementType elementType : ElementType.values()) {
+            for (InfoType infoType : InfoType.values()) {
+                cases.add(Pair.of(elementType, infoType));
+            }
+        }
+        return cases.stream().map(e1 -> Arguments.of(e1.getKey(), e1.getValue()));
+    }
+
+    @ParameterizedTest(name = "{0} (view {1})")
+    @MethodSource("schemaRequestValues")
+    void schemaRequest(@NonNull final ElementType eType, @NonNull final InfoType iType) throws Exception {
+        ResultActions result = this.mockMvc.perform(get("/v1/schemas/{eType}/{iType}", eType, iType)).andDo(log());
+        if (iType.equals(InfoType.TAB)) {
+            JsonSchema schema = schemaService.getSchema(eType, iType);
+            ObjectWriter ow = new ObjectMapper().writer().withDefaultPrettyPrinter();
+            String json = ow.writeValueAsString(schema);
+            result.andExpectAll(
+                    status().isOk(),
+                    content().contentType(SchemaController.APPLICATION_JSON_SCHEMA_VALUE),
+                    content().json(json)
+            );
+        } else {
+            result.andExpect(status().isNotImplemented());
+        }
+    }
+}