Backup github repositories to AWS S3

github-to-s3.ps1

#!/usr/bin/pwsh
Param (
    [Parameter(Mandatory=$True, Position=1)]
        [string]$RepositoryName,

    [Parameter(Mandatory=$True)]
        [string]$BucketName,

    [Parameter(Mandatory=$True)]
        [string]$Organization = "",

    [Parameter(Mandatory=$False)]
        [string]$BucketPrefix = ""
)

function New-TemporaryDirectory {
    $parent = [System.IO.Path]::GetTempPath()
    [string] $name = [System.Guid]::NewGuid()

    $fullDirectoryName = (Join-Path $parent $name)
    New-Item -ItemType Directory -Path $fullDirectoryName | Out-Null

    return $fullDirectoryName
}

$tempDir = ""
try {
    Push-Location

    $tempDir = New-TemporaryDirectory
    Set-Location $tempDir

    git clone "[email protected]:${Organization}/${RepositoryName}.git"
    Set-Location $RepositoryName

    $bundlePath = (Join-Path $tempDir "${RepositoryName}.bundle")
    Write-Host "Creating bundle at $bundlePath"

    git bundle create $bundlePath --all
    if ($BucketPrefix -eq "") {
        aws s3 cp $bundlePath "s3://${BucketName}"
    }
    else {
        aws s3 cp $bundlePath "s3://${BucketName}/$($BucketPrefix -Replace "[/]+$", '')/"
    }
}
finally {
    Pop-Location

    if ($tempDir -ne "") {
        Remove-Item -Recurse -Confirm -Force "$tempDir"
    }
}