Initial implementation.

Facebook Prophet : Functions for timeseries forecasting.
Correlation: Functions for calculating linear correlations.

Signed-off-by: Nabeel <[email protected]>

Qlik-Py-Init.bat

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+@echo off
+echo Setting up the Python virtual environment... & echo.
+python -m venv qlik-py-env
+echo.
+echo Moving project files to the new directory... & echo.
+move generated "%~dp0\qlik-py-env"
+move core "%~dp0\qlik-py-env"
+echo.
+echo Activating the virtual environment... & echo.
+cd "%~dp0\qlik-py-env\Scripts"
+call activate
+cd ..
+echo.
+echo Installing required packages... & echo.
+pip install grpcio
+pip install numpy
+pip install scipy
+pip install pandas
+pip install fbprophet
+echo.
+echo All done. Run Qlik-Py-Start.bat to start the SSE Extension Service. & echo.
+pause

Qlik-Py-Start.bat

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+@echo off
+cd "%~dp0\qlik-py-env\Scripts"
+call activate
+cd ..\core
+python __main__.py
+pause

core/functions.json

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+{
+  "Functions": [
+    {
+      "Id": 0,
+      "Name": "Correlation",
+      "Type": 0,
+      "ReturnType": 1,
+      "Params": {
+        "a_series1": 0,
+        "b_series2": 0,
+		"c_corr_type": 0
+      }
+    },
+	{
+      "Id": 1,
+      "Name": "Pearson",
+      "Type": 0,
+      "ReturnType": 1,
+      "Params": {
+        "a_series1": 0,
+        "b_series2": 0
+      }
+    },
+	{
+      "Id": 2,
+      "Name": "Prophet",
+      "Type": 0,
+      "ReturnType": 1,
+      "Params": {
+        "a_date": 2,
+        "b_value": 1,
+		"c_other_args": 0
+      }
+    },
+	{
+      "Id": 3,
+      "Name": "Prophet_Basic",
+      "Type": 0,
+      "ReturnType": 1,
+      "Params": {
+        "a_date": 2,
+        "b_value": 1
+      }
+    },
+	{
+      "Id": 4,
+      "Name": "Prophet_Holidays",
+      "Type": 0,
+      "ReturnType": 1,
+      "Params": {
+        "a_date": 2,
+        "b_value": 1,
+		"c_holidays": 2,
+		"d_other_args": 0
+      }
+    },
+	{
+      "Id": 5,
+      "Name": "Prophet_Seasonality",
+      "Type": 0,
+      "ReturnType": 1,
+      "Params": {
+        "a_season": 2,
+        "b_time_series": 0,
+		"c_holidays": 0,
+		"d_other_args": 0
+      }
+    }
+  ]
+}

core/logger.config

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+[loggers]
+keys=root
+
+[logger_root]
+handlers=console,file
+level=NOTSET
+
+[formatters]
+keys=simple,complex
+
+[formatter_simple]
+format=%(asctime)s - %(levelname)s - %(message)s
+
+[formatter_complex]
+format=%(asctime)s - %(levelname)s - %(module)s : %(lineno)d - %(message)s
+
+[handlers]
+keys=file,console
+
+[handler_file]
+class=handlers.TimedRotatingFileHandler
+interval=midnight
+backupCount=5
+formatter=complex
+level=DEBUG
+args=('logs/SSEPlugin.log',)
+
+[handler_console]
+class=StreamHandler
+formatter=simple
+level=INFO
+args=(sys.stdout,)