feat: backend model load balancing support (#4927)

api/controllers/console/workspace/load_balancing_config.py

@@ -0,0 +1,106 @@
+from flask_restful import Resource, reqparse
+from werkzeug.exceptions import Forbidden
+
+from controllers.console import api
+from controllers.console.setup import setup_required
+from controllers.console.wraps import account_initialization_required
+from core.model_runtime.entities.model_entities import ModelType
+from core.model_runtime.errors.validate import CredentialsValidateFailedError
+from libs.login import current_user, login_required
+from models.account import TenantAccountRole
+from services.model_load_balancing_service import ModelLoadBalancingService
+
+
+class LoadBalancingCredentialsValidateApi(Resource):
+    @setup_required
+    @login_required
+    @account_initialization_required
+    def post(self, provider: str):
+        if not TenantAccountRole.is_privileged_role(current_user.current_tenant.current_role):
+            raise Forbidden()
+
+        tenant_id = current_user.current_tenant_id
+
+        parser = reqparse.RequestParser()
+        parser.add_argument('model', type=str, required=True, nullable=False, location='json')
+        parser.add_argument('model_type', type=str, required=True, nullable=False,
+                            choices=[mt.value for mt in ModelType], location='json')
+        parser.add_argument('credentials', type=dict, required=True, nullable=False, location='json')
+        args = parser.parse_args()
+
+        # validate model load balancing credentials
+        model_load_balancing_service = ModelLoadBalancingService()
+
+        result = True
+        error = None
+
+        try:
+            model_load_balancing_service.validate_load_balancing_credentials(
+                tenant_id=tenant_id,
+                provider=provider,
+                model=args['model'],
+                model_type=args['model_type'],
+                credentials=args['credentials']
+            )
+        except CredentialsValidateFailedError as ex:
+            result = False
+            error = str(ex)
+
+        response = {'result': 'success' if result else 'error'}
+
+        if not result:
+            response['error'] = error
+
+        return response
+
+
+class LoadBalancingConfigCredentialsValidateApi(Resource):
+    @setup_required
+    @login_required
+    @account_initialization_required
+    def post(self, provider: str, config_id: str):
+        if not TenantAccountRole.is_privileged_role(current_user.current_tenant.current_role):
+            raise Forbidden()
+
+        tenant_id = current_user.current_tenant_id
+
+        parser = reqparse.RequestParser()
+        parser.add_argument('model', type=str, required=True, nullable=False, location='json')
+        parser.add_argument('model_type', type=str, required=True, nullable=False,
+                            choices=[mt.value for mt in ModelType], location='json')
+        parser.add_argument('credentials', type=dict, required=True, nullable=False, location='json')
+        args = parser.parse_args()
+
+        # validate model load balancing config credentials
+        model_load_balancing_service = ModelLoadBalancingService()
+
+        result = True
+        error = None
+
+        try:
+            model_load_balancing_service.validate_load_balancing_credentials(
+                tenant_id=tenant_id,
+                provider=provider,
+                model=args['model'],
+                model_type=args['model_type'],
+                credentials=args['credentials'],
+                config_id=config_id,
+            )
+        except CredentialsValidateFailedError as ex:
+            result = False
+            error = str(ex)
+
+        response = {'result': 'success' if result else 'error'}
+
+        if not result:
+            response['error'] = error
+
+        return response
+
+
+# Load Balancing Config
+api.add_resource(LoadBalancingCredentialsValidateApi,
+                 '/workspaces/current/model-providers/<string:provider>/models/load-balancing-configs/credentials-validate')
+
+api.add_resource(LoadBalancingConfigCredentialsValidateApi,
+                 '/workspaces/current/model-providers/<string:provider>/models/load-balancing-configs/<string:config_id>/credentials-validate')