Automate Avro Integration Tasks from PowerShell

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Avro ADO.NET Provider

Rapidly create and deploy powerful .NET applications that integrate with Avro.



Are you looking for a quick and easy way to access Avro data from PowerShell? We show how to use the Cmdlets for Avro and the CData ADO.NET Provider for Avro to connect to Avro data and synchronize, automate, download, and more.

The CData Cmdlets for Avro are standard PowerShell cmdlets that make it easy to accomplish data cleansing, normalization, backup, and other integration tasks by enabling real-time access to Avro.

Cmdlets or ADO.NET?

The cmdlets are not only a PowerShell interface to the Avro API, but also an SQL interface; this tutorial shows how to use both to retrieve Avro data. We also show examples of the ADO.NET equivalent, which is possible with the CData ADO.NET Provider for Avro. To access Avro data from other .NET applications, like LINQPad, use the CData ADO.NET Provider for Avro.

After obtaining the needed connection properties, accessing Avro data in PowerShell consists of three basic steps.

Connect to your local Avro file(s) by setting the URI connection property to the location of the Avro file.

PowerShell

  1. Install the module:

    Install-Module AvroCmdlets
  2. Connect:

    $avro = Connect-Avro -URI "$URI"
  3. Search for and retrieve data:

    $column2 = "value_2" $sampletable_1 = Select-Avro -Connection $avro -Table "SampleTable_1" -Where "Column2 = `'$Column2`'" $sampletable_1

    You can also use the Invoke-Avro cmdlet to execute SQL commands:

    $sampletable_1 = Invoke-Avro -Connection $avro -Query 'SELECT * FROM SampleTable_1 WHERE Column2 = @Column2' -Params @{'@Column2'='value_2'}

ADO.NET

  1. Load the provider's assembly:

    [Reflection.Assembly]::LoadFile("C:\Program Files\CData\CData ADO.NET Provider for Avro\lib\System.Data.CData.Avro.dll")
  2. Connect to Avro:

    $conn= New-Object System.Data.CData.Avro.AvroConnection("URI=C:/folder/table.avroInitiateOAuth=GETANDREFRESH") $conn.Open()
  3. Instantiate the AvroDataAdapter, execute an SQL query, and output the results:

    $sql="SELECT Id, Column1 from SampleTable_1" $da= New-Object System.Data.CData.Avro.AvroDataAdapter($sql, $conn) $dt= New-Object System.Data.DataTable $da.Fill($dt) $dt.Rows | foreach { Write-Host $_.id $_.column1 }