Separation of Concerns: Logic App from ARM Template

Set-AzureRmResource.ps1

$subscriptionId = "[SUBSCRIPTION_ID]"
$resourceGroup = "[RESOURCE_GROUP]"
$resourceName = "[RESOURCE_NAME]"
$connectorName = "[CONNECTOR_NAME]"
$apiVersion = "2016-06-01"

# Read parameters.json, replace values, and convert it to PSObject
$param = (Get-Content parameters.json -Encoding UTF8 -Raw) `
         -replace "{subscriptionId}", $subscriptionId `
         -replace "{resourceGroup}", $resourceGroup `
         -replace "{connectorName}", $connectorName `
         -replace "{apiVersion}", $apiVersion | `
         ConvertFrom-Json

# Read definition.json and convert it to PSObject
$definition = Get-Content definition.json -Encoding UTF8 -Raw | `
              ConvertFrom-Json

# Get Logic App
$resource = Get-AzureRmResource `
            -ResourceGroupName $resourceGroup `
            -ResourceName $resourceName `
            -ResourceType Microsoft.Logic/workflows

# Update Logic App
$resource.Properties.parameters = $param
$resource.Properties.definition = $definition

$resource | Set-AzureRmResource -Verbose -Force