Scan libraries for webhook and export to csv

Summary

As part of the the pre migration assessment, it is important to identify all libraries that have webhooks configured. This script will scan all libraries in a site collection and export the libraries that have webhooks configured to a csv file.

• PnP PowerShell

#use this function to get the sites you want to check
function GetSitesToCheck 
{
    #$allsites = Get-PnPTenantSite -Connection $adminConn -Filter "Url -like 'https://contoso.sharepoint.com/'"  -ErrorAction Stop
    $allsites = Get-PnPTenantSite -Connection $adminConn -ErrorAction Stop
    return $allsites
}


$adminUrl = "https://contoso-admin.sharepoint.com"
$PnPClientId = "Your PnP Client ID"
$adminConn = Connect-PnPOnline -Url $adminUrl -Interactive -ClientId $PnPClientId
$outputPath = "C:\temp\" 
$sites = GetSitesToCheck
$output = @()
foreach ($site in $sites) 
{
    $siteUrl = $site.Url
    $siteConn = Connect-PnPOnline -Url $siteUrl -Interactive -ClientId $PnPClientId
    $libraries = Get-PnPList  | Where-Object {$_.BaseType -eq "DocumentLibrary"}
    foreach ($library in $libraries) 
    {
        $webhooks = Get-PnPWebhookSubscription -List $library.Title
        foreach ($webhook in $webhooks)
        {
            Write-Host "Library $($library.Title) in site $($site.Title) has $($webhooks.Count) webhooks"
            $output += [PSCustomObject]@{
                SiteUrl = $siteUrl
                SiteTitle = $site.Title
                LibraryTitle = $library.Title
                WebhookId = $webhook.Id
                WebhookExpirationDateTime = $webhook.ExpirationDateTime
                WebhookNotificationUrl = $webhook.NotificationUrl
                WebhookResource = $webhook.Resource
                WebhookClientState = $webhook.ClientState
            }
        }
    }
}

$output | Export-Csv -Path "$outputPath\Webhooks.csv" -Encoding utf8BOM -Delimiter "|" -Force;

Check out the PnP PowerShell to learn more at: https://aka.ms/pnp/powershell

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Contributors

Author(s)
Kasper Larsen

Disclaimer

THESE SAMPLES ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.