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This is a guide to installing the WhereScape Enablement Pack for Google BigQuery for WhereScape RED

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Table of Contents

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	Prerequisites For PostgreSQL Metadata

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Before you begin the following prerequisites must be met:

Create Database and ODBC DSN :
- Supported* version of PostgreSQL (PostgreSQL 12 or higher)
  - A database to house the RED Metadata Repository.
  - A database for the Range Table DB (Optional)
  - A database to house scheduler (Optional)
Software Installations
- WhereScape RED10 with valid license key entered and EULA accepted
- WhereScape Enablement Pack for target database version RED10

Windows Powershell (64 bit) version 4 or higher
- To check Windows Powershell Version:
  - Run below command in Windows Powershell
```
Get-Host|Select-Object Version
```
  - Run below command in Command Prompt
```
powershell $psversiontable
```

Run the following command using PowerShell

The security protocol TLS 1.0 and 1.1 used by PowerShell to communicate with PowerShell gallery has deprecated and TLS 1.2 has been made mandatory

[Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
Register-PSRepository -Default -Verbose
Set-PSRepository -Name "PSGallery" -InstallationPolicy Trusted

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Install-Module -Name PoshProgressBar -SkipPublisherCheck -Force

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-WIP
	Prerequisites For PostgreSQL Metadata -WIP

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Prerequisites For Google BigQuery

Before you begin the following prerequisites must be met:

Create Database and ODBC

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DSN :
- Google BigQuery (ODBC driver version 3.00.xx.xxxx or higher(64-bit))
  - At least one schema available to use as a RED Data Warehouse Target
Software Installations
- Google Cloud SDK for utilities GSUTIL and BQ installed and on the Windows system path
  - Download and Install Google Cloud SDK Installer from https://cloud.google.com/sdk/docs/quickstart
  - Note: To use the Google Cloud SDK and its associated tools (GSUTIL and BQ), authentication, initialization, and project
    configuration are required.
    Please refer to the provided instructions for completing this process from https://cloud.google.com/sdk/docs/install-sdk
  - Important: Google Cloud SDK and its associated tools (GSUTIL and BQ) must be authenticated again after installation.
    For reauthentication please refer to this process from https://cloud.google.com/sdk/gcloud/reference/auth/application-default
    /login
    or run the below command as admin in Command Prompt and follow the prompted instructions.
    A complete system restart is recommended after this process.

gcloud auth application-default login

- ODBC DSN created to connect to your RED Data Warehouse on BigQuery
- Google BigQuery Catalog Name
- At least one storage bucket needs to be created on Google Cloud Storage.
  - Permission Required: Upload, Read and Delete File

Python 3.8 or higher (Tested with 3.8-3.11)
- Select "Add Python 3.8 to PATH" from the installation Window
- Pip Manager Install with the command: python -m pip install --upgrade pip

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Note
Some of the libraries might be deprecated in the newer versions of

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Python (Python 3.12 and higher)

Enablement Pack Setup Scripts

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Setup and configure a RED Metadata Repository for target database

If RED repository exists then updates the repository with 1.Templates 2.Scripts 3.Extended Properties 4.Datatype Mappings 5.UI Configurations

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Yes

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Yes

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No*

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No*

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* Note that on some systems executing Windows Powershell scripts is disabled by default, see troubleshooting for workarounds

Each Powershell script in the list above provides some help at the command line, this can be output by passing the "-help" parameter to the script.For Example > .\Setup_Enablement_Pack.ps1 -help

Step-By-Step Guide

Setup and configure RED Metadata Repository

Run Powershell as Administrator:

         Script 1 > Powershell -ExecutionPolicy Bypass -File .\Setup_Enablement_Pack.ps1

Important Upgrade Notes

If RED repository exists, it will prompt to upgrade the repository.
This enablement pack will overwrite any existing Source Enablement Pack UI Configs:

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Azure Data Lake Storage Gen2

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Google Cloud

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To ensure existing Source Enablement Pack connections and associated Load Tables continue to browse and load:

Go into UI Configuration Maintenance in RED prior to installing this Enablement Pack and rename the affected UI Configurations. While the updated Load Template will work with previous Source Enablement Pack's we recommend moving these previous versions of Load Tables to newly created Parser based connections following this install. The earlier versions of the Source Enablement Pack will be deprecated following this release.

Important Upgrade Notes

A change to the script exit code has been introduced. Whenever a load/update script is regenerated, it is essential to regenerate the linked action script. Similarly, regenerating the action scripts requires regenerating the associated load/update scripts to keep both scripts in sync.

Install or Update WhereScape Python Modules

Run Script As Administrator

         Script 2 > install_WslPython_Modules.bat

There are two steps in this script:

1. Installs the WhereScape WslPython modules to C:\Program Data\WhereScape\Modules\

2. PIP to download/update required Python libraries - for offline install please see the required library list for Python in the Troubleshooting section.

Install or Update WhereScape Python Templates (For Existing Installations)

Run Script as Administrator

          Script 2 > install_WslPython_Modules.bat
          Script 3 > . .\import_python_templates.ps1
          Script 4 > . .\set_default_templates.ps1

Note : Skip this step for new installations.

Set Connection defaults for a Template Set (For Existing Installations)

          Script 4 > . .\set_default_templates.ps1

Choose "Python" when prompted.

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	Install Guides-Common
	Install Guides-Common

Post Install Steps - Optional

If you used the script

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Setup_Enablement_Pack.ps1

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then the following optional post-install steps are available

Configure Connections

There were

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three connections added that will optionally require your attention:

Connection: 'Google BigQuery' - This connection was

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set as per parameters provided in the installation script 1
1. open

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1. its properties and check the extended properties tab, set it up for GBQ_BUCKET and LOCATION
Connection: 'Database Source System' - this connection was

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set up as an example source connection,
- open it's properties and set it up for a source DB in your environment
- or you can remove it if not required
Regenerate Windows Action Scripts for STAGE_DATE_GBQ and DIM_DATE_GBQ and start the job Initialize Date Dimension for Google BigQuery

Enable Script Launcher Toolbar

There are

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several stand-alone scripts which provide some features such as "Ranged Loading", these scripts have been added to the Script Launcher menu but you will need to enable the menu toolbar item to see them.

To enable the Script Launcher menu in RED

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, select View>Toolbars>Script Launcher

Source Enablement Pack Support

Source Pack Name	Supported By Google BigQuery	Supported Features	Prerequisites/Permissions Required Google Big Query
Google Cloud Storage	Yes	Download to local and load	None
Google Drive	No	N/A	None
Azure Data Lake Storage Gen2	Yes	Download to local and load	None
Amazon S3	Yes	Download to local and load	None
Windows Parser	CSV Excel JSON AVRO ORC PARQUET	Load Template, Source Properties will have option to select parser type to load the files.	Refer to Windows Parser Guide.

Troubleshooting and Tips

Run As Administrator

Press the Windows Key on your keyboard and start typing cmd.exe, when the cmd.exe icon shows up in the search list right click it to bring up the context menu,

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select Run As Administrator

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Now you have an admin prompt navigate to to the folder where you have unpacked your WhereScape Red Enablement Pack

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using the

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cd

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command:

C:\Windows\system32> cd <full path to the unpacked folder>

Run batch (.bat) scripts from the administrator prompt by simply typing the name at the prompt and

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clicking enter, for example:

C:\temp\EnablementPack>install_WslPowershell_Modules.bat

Run Powershell (.ps1) scripts from the administrator prompt by typing the Powershell run script command, for example:

C:\temp\EnablementPack>Powershell -ExecutionPolicy Bypass -File .\Setup_Enablement_Pack.ps1

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Note
In the event you can not bypass the Powershell execution policy due to group policies you can instead try "-ExecutionPolicy RemoteSigned" which should allow unsigned local scripts.

Setting Up Google BigQuery Configuration

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Add a system variable GOOGLE_APPLICATION_CREDENTIALS to point to a location where credentials get generated.

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Open command prompt and cereate Google BiqQuery file

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using gcloud auth application-default login

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On running this command, config file should be created in the location specified in the config file system variable

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Windows Powershell Script Execution

On some systems, Windows Powershell script execution is disabled by default. There are

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several workarounds for this which can be found by searching the term "Powershell Execution Policy".

Here is the most common workaround

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that WhereScape suggests, which does not permanently change the execution rights:

Start a Windows CMD prompt as Administrator, change the directory to your script directory, and run the WhereScape Powershell scripts with this command:

cmd:>Powershell -ExecutionPolicy Bypass -File .\<script_file_name.ps1>

Restarting failed scripts

Some of the setup scripts will track each step and output the step number when there is a failure. To restart from the failed step (or to skip the step) provide the

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parameter -startAtStep <step number>

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to the script.

Example:

Powershell -ExecutionPolicy Bypass -File .\<script_file_name.ps1> -startAtStep 123

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Tip
To avoid having to provide all the parameters again you can copy the full command line with parameters from the first "INFO" message from the beginning of the console output.

Python requirements for offline install

Additionally to the base Python installation being required, the WhereScape Python Template set also requires certain additional Python libraries. The install scripts

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use the PIP (package manager) to download these libraries, however, for offline installs, you will need to install the required libraries yourself.

Required Python libraries/add-ons:

pywin32-ctypes
python-tds
pywin32
glob2
gzip-reader
regex
pyodbc

If a valid RED installation can not be found

If you have RED 10.x or higher installed but the script (Setup_Enablement_Pack.ps1) fails to find it on

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your system then you are most likely running the PowerShell (x86) version which does not show installed 64-bit apps by default. Please open a 64-bit version of Powershell instead and re-run the script

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Attachments:

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