Feat: Run metrics are now downloaded as zip (#816)

Needs to be tested in LIVE environment to compare the behavior happening in DEV.

web/api/maestro_api/controllers/run_metric.py

@@ -1,3 +1,6 @@
+import time
+from zipfile import ZipFile, ZipInfo, ZIP_DEFLATED
+from io import BytesIO
 from flask import request, jsonify, send_file
 
 from maestro_api.db.models.run import Run
@@ -67,16 +70,25 @@ def download(self, run_id, data, user):
         ]
 
         filename = f"metrics_{run.id}.csv"
-        content_type = "text/csv"
 
         binary_file = CsvBytesIO.create_from_dict(headers, jmeter_metrics)
 
+        zip_buffer = BytesIO()
+        zip_filename = f"run_metrics_{run.id}.zip"
+
+        with ZipFile(zip_buffer, "w", compression=ZIP_DEFLATED) as zip_file:
+            csv_info = ZipInfo(filename)
+            csv_info.date_time = time.localtime(time.time())[:6]
+            zip_file.writestr(csv_info, binary_file.getvalue())
+
+        zip_buffer.seek(0)
+
         return (
             send_file(
-                binary_file,
+                zip_buffer,
                 as_attachment=True,
-                download_name=filename,
-                mimetype=content_type,
+                download_name=zip_filename,
+                mimetype="application/zip",
             ),
             200,
         )

web/api/tests/routes/test_run_metric.py

@@ -1,3 +1,5 @@
+import io
+import zipfile
 import json
 from datetime import datetime, timedelta
 
@@ -409,4 +411,12 @@ def test_run_metrics_download(client):
     )
 
     assert 200 == response.status_code
-    assert file_content == response.data.decode("utf-8")
+    assert "application/zip" in response.content_type
+
+    zip_data = io.BytesIO(response.data)
+    with zipfile.ZipFile(zip_data, "r") as zip_file:
+        assert len(zip_file.namelist()) == 1
+        csv_file_name = zip_file.namelist()[0]
+
+        csv_content = zip_file.read(csv_file_name).decode("utf-8")
+        assert csv_content == file_content