file validation in serailizer with number of file

backend/api_v2/api_deployment_views.py

@@ -4,7 +4,7 @@
 
 from api_v2.constants import ApiExecution
 from api_v2.deployment_helper import DeploymentHelper
-from api_v2.exceptions import InvalidAPIRequest, NoActiveAPIKeyError
+from api_v2.exceptions import NoActiveAPIKeyError
 from api_v2.models import APIDeployment
 from api_v2.postman_collection.dto import PostmanCollection
 from api_v2.serializers import (
@@ -47,16 +47,14 @@ def initialize_request(
     def post(
         self, request: Request, org_name: str, api_name: str, api: APIDeployment
     ) -> Response:
-        file_objs = request.FILES.getlist(ApiExecution.FILES_FORM_DATA)
         serializer = ExecutionRequestSerializer(data=request.data)
         serializer.is_valid(raise_exception=True)
+        file_objs = serializer.validated_data.get(ApiExecution.FILES_FORM_DATA)
         timeout = serializer.validated_data.get(ApiExecution.TIMEOUT_FORM_DATA)
         include_metadata = serializer.validated_data.get(ApiExecution.INCLUDE_METADATA)
         include_metrics = serializer.validated_data.get(ApiExecution.INCLUDE_METRICS)
         use_file_history = serializer.validated_data.get(ApiExecution.USE_FILE_HISTORY)
         tag_names = serializer.validated_data.get(ApiExecution.TAGS)
-        if not file_objs or len(file_objs) == 0:
-            raise InvalidAPIRequest("File shouldn't be empty")
         response = DeploymentHelper.execute_workflow(
             organization_name=org_name,
             api=api,

backend/api_v2/serializers.py

@@ -9,8 +9,10 @@
 from rest_framework.serializers import (
     BooleanField,
     CharField,
+    FileField,
     IntegerField,
     JSONField,
+    ListField,
     ModelSerializer,
     Serializer,
     ValidationError,
@@ -115,12 +117,31 @@ class ExecutionRequestSerializer(TagParamsSerializer):
             e.g:'tag1,tag2-name,tag3_name'
     """
 
+    MAX_FILES_ALLOWED = 32
+
     timeout = IntegerField(
         min_value=-1, max_value=ApiExecution.MAXIMUM_TIMEOUT_IN_SEC, default=-1
     )
     include_metadata = BooleanField(default=False)
     include_metrics = BooleanField(default=False)
     use_file_history = BooleanField(default=False)
+    files = ListField(
+        child=FileField(),
+        required=True,
+        allow_empty=False,
+        error_messages={
+            "required": "At least one file must be provided.",
+            "empty": "The file list cannot be empty.",
+        },
+    )
+
+    def validate_files(self, value):
+        """Validate the files field."""
+        if len(value) == 0:
+            raise ValidationError("The file list cannot be empty.")
+        if len(value) > self.MAX_FILES_ALLOWED:
+            raise ValidationError(f"Maximum '{self.MAX_FILES_ALLOWED}' files allowed.")
+        return value
 
 
 class ExecutionQuerySerializer(Serializer):