Add .zip format for artifact upload (#93)

* add .zip format

* lint and fixed bug

* fix local service

* fix local client load

qiskit_ibm_experiment/client/experiment_rest_adapter.py

@@ -458,5 +458,7 @@ def file_download(
         if result.status_code == 200:
             if file_name.endswith(".yaml"):
                 return yaml.safe_load(result.content)
-            return result.json(cls=json_decoder)
+            elif file_name.endswith(".json"):
+                return result.json(cls=json_decoder)
+            return result.content
         return result

qiskit_ibm_experiment/client/local_client.py

@@ -15,6 +15,7 @@
 # pylint treats the dataframes as JsonReader for some reason
 # pylint: disable=no-member
 
+import io
 import logging
 import os
 import uuid
@@ -767,9 +768,13 @@ def experiment_file_upload(
             self._files_list[experiment_id] = []
         if experiment_id not in self._files:
             self._files[experiment_id] = {}
+        if isinstance(file_data, io.BytesIO):
+            size = len(file_data.getvalue())
+        else:
+            size = len(file_data)
         new_file_element = {
             "Key": file_name,
-            "Size": len(file_data),
+            "Size": size,
             "LastModified": str(datetime.now()),
         }
         self._files_list[experiment_id].append(new_file_element)
@@ -798,4 +803,6 @@ def experiment_file_download(
             raise IBMExperimentEntryNotFound
         if file_name.endswith(".yaml"):
             return yaml.safe_load(self._files[experiment_id][file_name])
-        return json.loads(self._files[experiment_id][file_name], cls=json_decoder)
+        elif file_name.endswith(".json"):
+            return json.loads(self._files[experiment_id][file_name], cls=json_decoder)
+        return self._files[experiment_id][file_name].read()

qiskit_ibm_experiment/service/ibm_experiment_service.py

@@ -1692,19 +1692,24 @@ def file_upload(
             json_encoder: Custom encoder to use to encode the experiment.
 
         Additional info:
-            The filename is expected to end with ".json" (otherwise it will be added)
+            The filename is expected to end with ".json", ".yaml", or ".zip", otherwise
+            ".json" will be added,
             and the data itself should be either a dictionary or a JSON serialization
             with the default encoder.
         """
-        # currently the resultdb enforces files to end with .json or .yaml
+        # currently resultdb enforces files to end with .json, .yaml, or .zip
         # without suffix, we assume json formatting
-        if not (file_name.endswith(".json") or file_name.endswith(".yaml")):
+        if not (
+            file_name.endswith(".json")
+            or file_name.endswith(".yaml")
+            or file_name.endswith(".zip")
+        ):
             file_name += ".json"
         if isinstance(file_data, dict):
             # for now we avoid using custom encoder with yaml files
             if file_name.endswith(".yaml"):
                 file_data = yaml.dump(file_data)
-            else:
+            elif file_name.endswith(".json"):
                 file_data = json.dumps(file_data, cls=json_encoder)
         self._api_client.experiment_file_upload(experiment_id, file_name, file_data)
 
@@ -1722,10 +1727,14 @@ def file_download(
         Returns:
             The JSON deserialization of the data file
         Additional info:
-            The filename is expected to end with ".json", otherwise
-            it will be added.
+            The filename is expected to end with ".json", ".yaml", or ".zip", otherwise
+            ".json" will be added.
         """
-        if not (file_name.endswith(".json") or file_name.endswith(".yaml")):
+        if not (
+            file_name.endswith(".json")
+            or file_name.endswith(".yaml")
+            or file_name.endswith(".zip")
+        ):
             file_name += ".json"
         # for now we avoid using custom decoder with yaml files
         file_data = self._api_client.experiment_file_download(