Create REST endpoint to retrieve models

Change-Id: Ifca0095d84d5da4ab4b055942d893e9c6a259eb7
Issue-ID: SDC-3622
Signed-off-by: André Schmid <andre.schmid@est.tech>

2 files changed, 38 insertions, 0 deletions

diff --git a/catalog-be/src/main/java/org/openecomp/sdc/be/components/impl/ModelBusinessLogic.java b/catalog-be/src/main/java/org/openecomp/sdc/be/components/impl/ModelBusinessLogic.java
index 7f68a00a8b..a048af4ac8 100644
--- a/catalog-be/src/main/java/org/openecomp/sdc/be/components/impl/ModelBusinessLogic.java
+++ b/catalog-be/src/main/java/org/openecomp/sdc/be/components/impl/ModelBusinessLogic.java
@@ -21,6 +21,7 @@ package org.openecomp.sdc.be.components.impl;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import org.apache.commons.lang3.StringUtils;
@@ -56,6 +57,15 @@ public class ModelBusinessLogic {
         return modelOperation.findModelByName(modelName);
     }
 
+    /**
+     * Loads the list of models.
+     *
+     * @return the list of models
+     */
+    public List<Model> listModels() {
+        return modelOperation.findAllModels();
+    }
+
     public void createModelImports(final String modelName, final InputStream modelImportsZip) {
         if (StringUtils.isEmpty(modelName)) {
             throw ModelOperationExceptionSupplier.invalidModel(modelName).get();
diff --git a/catalog-be/src/main/java/org/openecomp/sdc/be/servlets/ModelServlet.java b/catalog-be/src/main/java/org/openecomp/sdc/be/servlets/ModelServlet.java
index 0c5e4aebd6..337c641b33 100644
--- a/catalog-be/src/main/java/org/openecomp/sdc/be/servlets/ModelServlet.java
+++ b/catalog-be/src/main/java/org/openecomp/sdc/be/servlets/ModelServlet.java
@@ -30,10 +30,12 @@ import io.swagger.v3.oas.annotations.servers.Server;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import java.io.InputStream;
 import java.util.Arrays;
+import java.util.List;
 import javax.inject.Inject;
 import javax.validation.Valid;
 import javax.validation.constraints.NotNull;
 import javax.ws.rs.Consumes;
+import javax.ws.rs.GET;
 import javax.ws.rs.HeaderParam;
 import javax.ws.rs.POST;
 import javax.ws.rs.PUT;
@@ -121,6 +123,32 @@ public class ModelServlet extends AbstractValidationsServlet {
         }
     }
 
+    @GET
+    @Path("/model")
+    @Produces(MediaType.APPLICATION_JSON)
+    @PermissionAllowed(AafPermission.PermNames.INTERNAL_ALL_VALUE)
+    @Operation(method = "GET", summary = "List TOSCA models", description = "List all the existing TOSCA models",
+        responses = {
+            @ApiResponse(content = @Content(array = @ArraySchema(schema = @Schema(implementation = Model.class)))),
+            @ApiResponse(responseCode = "200", description = "Listing successful"),
+            @ApiResponse(responseCode = "403", description = "Restricted operation")
+        }
+    )
+    public Response listModels(@HeaderParam(value = Constants.USER_ID_HEADER) final String userId) {
+        validateUser(ValidationUtils.sanitizeInputString(userId));
+        try {
+            final List<Model> modelList = modelBusinessLogic.listModels();
+            return buildOkResponse(getComponentsUtils().getResponseFormat(ActionStatus.OK), RepresentationUtils.toRepresentation(modelList));
+        } catch (final BusinessException e) {
+            throw e;
+        } catch (final Exception e) {
+            var errorMsg = "Unexpected error while listing the models";
+            BeEcompErrorManager.getInstance().logBeRestApiGeneralError(errorMsg);
+            log.error(errorMsg, e);
+            return buildErrorResponse(getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR));
+        }
+    }
+
     @PUT
     @Path("/model/imports")
     @Consumes(MediaType.MULTIPART_FORM_DATA)