api: add endpoint serving the project .gns3 topology file

GET /v3/projects/{project_id}/gns3file returns the raw .gns3 file as
application/json so the WebUI can render topology thumbnails without
opening the project. Adds a public Project.topology_file property.

docs/openapi.json

@@ -1 +1 @@
-{"openapi": "3.1.0", "info": {"title": "GNS3 controller API", "description": "This page describes the public controller API for GNS3", "version": "3.0.0"}, "paths": {"/v3/version": {"get": {"tags": ["Controller"], "summary": "Get Version", "description": "Return the server version number.", "operationId": "get_version_v3_version_get", "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/Version"}}}}}}, "post": {"tags": ["Controller"], "summary": "Check Version", "description": "Check if version is the same as the server.", "operationId": "check_version_v3_version_post", "requestBody": {"content": {"application/json": {"schema": {"$ref": "#/components/schemas/Version"}}}, "required": true}, "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/Version"}}}}, "409": {"description": "Invalid version", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/ErrorMessage"}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}}}, "/v3/reload": {"post": {"tags": ["Controller"], "summary": "Reload", "description": "Reload the controller", "operationId": "reload_v3_reload_post", "responses": {"204": {"description": "Successful Response"}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}}, "/v3/shutdown": {"post": {"tags": ["Controller"], "summary": "Shutdown", "description": "Shutdown the server", "operationId": "shutdown_v3_shutdown_post", "responses": {"204": {"description": "Successful Response"}, "403": {"description": "Server shutdown not allowed", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/ErrorMessage"}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}}, "/v3/iou_license": {"get": {"tags": ["Controller"], "summary": "Get Iou License", "description": "Return the IOU license settings", "operationId": "get_iou_license_v3_iou_license_get", "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/IOULicense"}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}, "put": {"tags": ["Controller"], "summary": "Update Iou License", "description": "Update the IOU license settings.", "operationId": "update_iou_license_v3_iou_license_put", "requestBody": {"content": {"application/json": {"schema": {"$ref": "#/components/schemas/IOULicense"}}}, "required": true}, "responses": {"201": {"description": "Successful Response", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/IOULicense"}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}}, "/v3/statistics": {"get": {"tags": ["Controller"], "summary": "Statistics", "description": "Return server statistics including compute resources, projects, and nodes.", "operationId": "statistics_v3_statistics_get", "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {"additionalProperties": true, "type": "object", "title": "Response Statistics V3 Statistics Get"}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}}, "/v3/notifications": {"get": {"tags": ["Controller"], "summary": "Controller Http Notifications", "description": "Receive controller notifications about the controller from HTTP stream.", "operationId": "controller_http_notifications_v3_notifications_get", "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}}, "/v3/access/users/login": {"post": {"tags": ["Users"], "summary": "Login", "description": "Default user login method using forms (x-www-form-urlencoded).\nExample: curl -X POST http://host:port/v3/access/users/login -H \"Content-Type: application/x-www-form-urlencoded\" -d \"username=admin&password=admin\"", "operationId": "login_v3_access_users_login_post", "requestBody": {"content": {"application/x-www-form-urlencoded": {"schema": {"$ref": "#/components/schemas/Body_login_v3_access_users_login_postLine truncated
+{"openapi": "3.1.0", "info": {"title": "GNS3 controller API", "description": "This page describes the public controller API for GNS3", "version": "3.0.0"}, "paths": {"/v3/version": {"get": {"tags": ["Controller"], "summary": "Get Version", "description": "Return the server version number.", "operationId": "get_version_v3_version_get", "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/Version"}}}}}}, "post": {"tags": ["Controller"], "summary": "Check Version", "description": "Check if version is the same as the server.", "operationId": "check_version_v3_version_post", "requestBody": {"content": {"application/json": {"schema": {"$ref": "#/components/schemas/Version"}}}, "required": true}, "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/Version"}}}}, "409": {"description": "Invalid version", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/ErrorMessage"}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}}}, "/v3/reload": {"post": {"tags": ["Controller"], "summary": "Reload", "description": "Reload the controller", "operationId": "reload_v3_reload_post", "responses": {"204": {"description": "Successful Response"}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}}, "/v3/shutdown": {"post": {"tags": ["Controller"], "summary": "Shutdown", "description": "Shutdown the server", "operationId": "shutdown_v3_shutdown_post", "responses": {"204": {"description": "Successful Response"}, "403": {"description": "Server shutdown not allowed", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/ErrorMessage"}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}}, "/v3/iou_license": {"get": {"tags": ["Controller"], "summary": "Get Iou License", "description": "Return the IOU license settings", "operationId": "get_iou_license_v3_iou_license_get", "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/IOULicense"}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}, "put": {"tags": ["Controller"], "summary": "Update Iou License", "description": "Update the IOU license settings.", "operationId": "update_iou_license_v3_iou_license_put", "requestBody": {"content": {"application/json": {"schema": {"$ref": "#/components/schemas/IOULicense"}}}, "required": true}, "responses": {"201": {"description": "Successful Response", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/IOULicense"}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}}, "/v3/statistics": {"get": {"tags": ["Controller"], "summary": "Statistics", "description": "Return server statistics including compute resources, projects, and nodes.", "operationId": "statistics_v3_statistics_get", "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {"additionalProperties": true, "type": "object", "title": "Response Statistics V3 Statistics Get"}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}}, "/v3/notifications": {"get": {"tags": ["Controller"], "summary": "Controller Http Notifications", "description": "Receive controller notifications about the controller from HTTP stream.", "operationId": "controller_http_notifications_v3_notifications_get", "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {}}}}, "422": {"description": "Validation Error", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/HTTPValidationError"}}}}}, "security": [{"OAuth2PasswordBearer": []}]}}, "/v3/settings": {"get": {"tags": ["Server settings"], "summary": "Get Server Settings", "description": "Return the server settings.\n\nThe values reflect the running configuration (which may include command\nline overrides). Secret fields are masked.", "operationId": "get_server_settings_v3_settings_get", "responses": {"200": {"description": "Successful Response", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/SettingsResponse"}}}}, "401": {"description": "Unauthorized", "cLine truncated