C-Dash: Add bandwidth to trending graphs

- NDRPDR tests only
- MRR to be done when data is in parquets

Change-Id: If2b1f76d5e2dc6f3a480eeb0950e7ab9550f8901
Signed-off-by: Tibor Frank <tifrank@cisco.com>

1 files changed, 22 insertions, 1 deletions

diff --git a/csit.infra.dash/app/cdash/data/data.py b/csit.infra.dash/app/cdash/data/data.py
index 2bf3649778..783ebe25ff 100644
--- a/csit.infra.dash/app/cdash/data/data.py
+++ b/csit.infra.dash/app/cdash/data/data.py
@@ -30,6 +30,12 @@ from pyarrow.lib import ArrowInvalid, ArrowNotImplementedError
 from ..utils.constants import Constants as C
 
 
+# If True, pyarrow.Schema is generated. See also condition in the method
+# _write_parquet_schema.
+# To generate schema, select only one data set in data.yaml file.
+GENERATE_SCHEMA = False
+
+
 class Data:
     """Gets the data from parquets and stores it for further use by dash
     applications.
@@ -212,7 +218,10 @@ class Data:
         for itm in df:
             try:
                 # Specify the condition or remove it:
-                if pd.api.types.is_string_dtype(itm["result_rate_unit"]):
+                if all((
+                        pd.api.types.is_string_dtype(itm["<column_name>"]),
+                        pd.api.types.is_string_dtype(itm["telemetry"][0])
+                    )):
                     print(pa.Schema.from_pandas(itm))
                     pa.parquet.write_metadata(
                         pa.Schema.from_pandas(itm),
@@ -357,6 +366,18 @@ class Data:
                 time_period = days
             else:
                 time_period = None
+
+            if GENERATE_SCHEMA:
+                # Generate schema:
+                Data._write_parquet_schema(
+                    path=data_set["path"],
+                    partition_filter=partition_filter,
+                    columns=data_set.get("columns", None),
+                    days=time_period
+                )
+                return
+
+            #  Read data:
             data = Data._create_dataframe_from_parquet(
                 path=data_set["path"],
                 partition_filter=partition_filter,