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#
#.SYNOPSIS
# Creates Event Grid Subscription.
#.DESCRIPTION
# Creates an Event Grid Subscription (Topic type: Azure Subscription) to a Function App V2
#.OUTPUTS
# Progress messages
#
Param(
[string]$ResourceGroupName,
[string]$FunctionAppName,
[string]$FunctionName,
[string]$EventGridSubscriptionName,
[string]$FunctionUrl="azurewebsites.net"
)
Function Get-AppServicePublishingCredentials($resourceGroupName, $functionAppName)
{
$resourceType = "Microsoft.Web/sites/config"
$resourceName = "$functionAppName/publishingcredentials"
$publishingCredentials = Invoke-AzureRmResourceAction -ResourceGroupName $resourceGroupName -ResourceType $resourceType -ResourceName $resourceName -Action list -ApiVersion 2015-08-01 -Force
return $publishingCredentials
}
function Get-EncodedCredentials($resourceGroupName, $functionAppName)
{
$publishingCredentials = Get-AppServicePublishingCredentials $resourceGroupName $functionAppName
$pair = "$($publishingCredentials.Properties.PublishingUserName):$($publishingCredentials.Properties.PublishingPassword)"
$encodedCreds = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes($pair))
return $encodedCreds
}
function Get-MasterAPIKey($encodedCreds, $functionAppName)
{
$result = Invoke-RestMethod -Uri "https://$functionAppName.scm.$FunctionUrl/api/functions/admin/masterkey" -Headers @{Authorization=("Basic {0}" -f $encodedCreds)}
return $result.masterKey
}
function Get-EventGridExtensionSystemKey($functionAppName, $masterKey)
{
$result = Invoke-RestMethod ("https://$functionAppName.$FunctionUrl/admin/host/systemkeys/eventgrid_extension?code=" + $masterKey)
return $result.value
}
function Create-EventGridSubscription($functionAppName, $functionName, $systemKey, $eventGridSubscriptionName)
{
$functionEndpointURL = "https://" + $functionAppName + ".$FunctionUrl/runtime/webhooks/eventgrid?functionName=" + $functionName + "&code=" + $systemkey +""
$subscriptionID=(Get-AzureRmContext).Subscription.Id
New-AzureRmDeployment `
-Name egdeployment `
-Location westeurope `
-TemplateUri https://raw.githubusercontent.com/Azure/azure-quickstart-templates/master/101-event-grid-resource-events-to-webhook/azuredeploy.json `
-eventSubName $eventGridSubscriptionName `
-endpoint $functionEndpointURL
}
# Get the Encoded Publish Credentials, so we can call Kudu API to get master key
$encodedCreds = Get-EncodedCredentials $ResourceGroupName $FunctionAppName
Write-Output "This is the encodedCreds: $encodedCreds"
# Get master key to call Event Grid Extension API
$masterKey = Get-MasterAPIKey $encodedCreds $FunctionAppName
Write-Output "This is the masterKey: $masterkey"
# Get Event Grid SystemKey, so we can create the Event Grid Webhook
$systemKey = Get-EventGridExtensionSystemKey $FunctionAppName $masterkey
Write-Output "This is the SystemKey: $systemKey"
Write-Output "Creating the Event Grid Subscription:"
Create-EventGridSubscription $FunctionAppName $FunctionName $systemKey $EventGridSubscriptionName
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