Get Veeam Backup for Azure pending update status.

Get-Veeam-VBA-pending-Updates.ps1

# This script get the pending updates from the Veeam Backup for Azure appliance.
# Since this information isnt available in VSPC I decided to write a script that uses the
# API and updates API to pull this info.
#
# You can integrate this into your own monitoring solution.
#
# `$pendingUpdates` is a integer and filled with the pending update count
# `$updateCategories` is a string and filled with the categories of the pending updates.
#
# Use at your own risk.
#

# Skip invalid or self signed SSL certifitates and force TLS1.2
add-type @"
    using System.Net;
    using System.Security.Cryptography.X509Certificates;
    public class TrustAllCertsPolicy : ICertificatePolicy {
        public bool CheckValidationResult(
            ServicePoint srvPoint, X509Certificate certificate,
            WebRequest request, int certificateProblem) {
            return true;
        }
    }
"@
[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

$url = "https://<url of your vba appliance>"
$username = "<your vba username>"
$password = "<your vba password>"

$body = @{
  username=$username
  password=$password
}

try {
    $result = Invoke-RestMethod -Method Post -Uri $url/api/oauth2/token -Body $body -ContentType "application/x-www-form-urlencoded" -UseBasicParsing -ErrorAction Stop
} catch {
    Write-Error "Failed to authenticate to VBA API."
    exit 1
}

if ('access_token' -in $result.PSobject.Properties.Name) {
    Write-Host "VBA access token received."

    $headers = @{
        Authorization="Bearer $($result.access_token)"
    }

    try {
        $result = Invoke-RestMethod -Method Get -Uri $url/api/v8/system/updaterLink -Headers $headers -ErrorAction Stop
    } catch {
        Write-Error "Failed to retrieve updater refresh token."
        exit 1
    }

    if ($result.Length -gt 20) {
        Write-Host "VBA updater refresh token received."

        $refreshToken = $result.Split("=")[1]
        
        $body = @{
          refresh_token=$refreshToken
          grant_type="refresh_token"
        } | ConvertTo-Json

        try {
            $result = Invoke-RestMethod -Method Post -Uri $url/updater/api/v2/auth/refresh-token -Body $body -ContentType "application/json" -ErrorAction Stop
        } catch {
            Write-Error "Failed to retrieve updater authentication token."
            exit 1
        }

        if ('access_token' -in $result.PSobject.Properties.Name) {
            Write-Host "VBA updater access token received."

            $headers = @{
                Authorization="Bearer $($result.access_token)"
            }

            try {
                $result = Invoke-RestMethod -Method Get -Uri $url/updater/api/v2/updates/packages-list -Headers $headers -ErrorAction Stop
            } catch {
                Write-Error "Failed to retrieve updater update list."
                exit 1
            }

            if ($result.origins.Count -gt 0) {
                Write-Host "We have pending updates, lets get them."

                $updateCategories = @{}
                $pendingUpdates = 0

                Foreach ($orgin in $result.origins) {

                    $updateCategory = [PSCustomObject]@{
                        Name=$orgin.name
                        Count=$orgin.childs.Count
                    }

                    $pendingUpdates += $orgin.childs.Count

                    $updateCategories["$($orgin.name)"] = $updateCategory
                }

                $updateCategories = ($updateCategories.Values | ForEach-Object { "$($_.Name): $($_.Count)" }) -join [System.Environment]::NewLine

                Write-Host "There are $($pendingUpdates) pending updates."
            } else {
                $updateCategories = ""
                $pendingUpdates = 0

                Write-Host "No pending updates."
            }
        }
    }
}

Adjusted the script to new API version v8.