query messages

docs/demos/azurecontainerapps/MessageCount.ps1

@@ -0,0 +1,31 @@
+
+Param(
+    [parameter(Mandatory=$true)][string]$storageAccount,
+    [parameter(Mandatory=$true)][string]$accesskey
+)
+
+function GetMessages($storageAccount, $accesskey){
+    $method = "GET"
+    $contenttype = "application/x-www-form-urlencoded"
+    $version = "2017-04-17"
+    $resource = "$QueueName/?comp=metadata"
+    $queue_url = "https://$storageAccount.queue.core.windows.net/$resource"
+    $GMTTime = (Get-Date).ToUniversalTime().toString('R')
+    $canonheaders = "x-ms-date:$GMTTime`nx-ms-version:$version`n"
+    $stringToSign = "$method`n`n$contenttype`n`n$canonheaders/$storageAccount/$resource"
+    $hmacsha = New-Object System.Security.Cryptography.HMACSHA256
+    $hmacsha.key = [Convert]::FromBase64String($accesskey)
+    $signature = $hmacsha.ComputeHash([Text.Encoding]::UTF8.GetBytes($stringToSign))
+    $signature = [Convert]::ToBase64String($signature)
+    $headers = @{
+        'x-ms-date' = $GMTTime
+        Authorization = "SharedKeyLite " + $storageAccount + ":" + $signature
+        "x-ms-version" = $version
+        Accept = "text/xml"
+    }
+    $response = Invoke-WebRequest -Method $method -Uri $queue_url -Headers $headers -ContentType $contenttype
+    return $response.Headers["x-ms-approximate-messages-count"]
+}
+ 
+$messageCount = GetMessages -storageAccount $storageAccount -accesskey $accesskey
+Write-Output "Feed Queue Messages: $messageCount"

docs/demos/azurecontainerapps/Readme.md

@@ -89,6 +89,14 @@ This folder contains additional scripts needed for testing the Azure Container A
         sleep 2;
     }
     ```
+    ```ps1
+        while (1) { 
+        $output = ./MessageCount.ps1 -storageAccount <storageAccountName> -accessKey <accessKey>
+        clear;
+        echo $output;
+        sleep 1;
+    }
+    ```
 
     ![Initial replicas](./scale-out-demo-0.png)