From 66b3db2c6b0039d27205d841d24b285c6ca04151 Mon Sep 17 00:00:00 2001
From: Christian Lechner <lechnerc77@users.noreply.github.com>
Date: Mon, 31 Jul 2023 09:46:42 +0200
Subject: [PATCH] feat: add Powershell script for egress determination

---
 get-egress-ips/README.md          | 12 +++++++---
 get-egress-ips/get-egress-ips.ps1 | 38 +++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+), 3 deletions(-)
 create mode 100644 get-egress-ips/get-egress-ips.ps1

diff --git a/get-egress-ips/README.md b/get-egress-ips/README.md
index 8332a759..fffe4a02 100644
--- a/get-egress-ips/README.md
+++ b/get-egress-ips/README.md
@@ -15,6 +15,12 @@ The script intelligently runs the curl pod in each of the different availability
 
 - On MacOS or Linux, run the following command
 
-```shell
-./get-egress-ips.sh
-```
+  ```shell
+  ./get-egress-ips.sh
+  ```
+
+- On Windows (or MacOS or Linux if you have PowerShell installed), run the following command:
+
+  ```pwsh
+  ./get-egress-ips.ps1
+  ```
diff --git a/get-egress-ips/get-egress-ips.ps1 b/get-egress-ips/get-egress-ips.ps1
new file mode 100644
index 00000000..3605774c
--- /dev/null
+++ b/get-egress-ips/get-egress-ips.ps1
@@ -0,0 +1,38 @@
+#!/usr/bin/pwsh
+$ErrorActionPreference = 'silentlycontinue'
+
+$ZONES = $(kubectl get nodes -o jsonpath='{.items[*].metadata.labels.topology\.kubernetes\.io/zone}').Split(" ")
+$ZONES = $ZONES | Select-Object -Unique
+
+Write-Output "Detected zones:"
+Write-Output "---------------"
+foreach ($zone in $ZONES) { 
+    Write-Output $zone
+}
+
+foreach ($zone in $ZONES) { 
+    $overrides = @{
+        "apiVersion" = "v1"
+        "metadata"   = @{
+            "labels" = @{
+                "sidecar.istio.io/inject" = "false"
+            }
+            "spec"   = @{
+                "nodeSelector" = @{
+                    "topology.kubernetes.io/zone" = $zone
+                }
+            }
+        }
+    } | ConvertTo-Json -EscapeHandling EscapeHtml -Depth 5 
+    
+    kubectl run -i --tty busybox --image=curlimages/curl --restart=Never --overrides=$overrides --rm --command -- curl 'http://ifconfig.me/ip' | Out-File -FilePath $env:TEMP/cluster_ips -Append
+}
+
+(Get-Content $env:TEMP/cluster_ips) -replace 'pod "busybox" deleted', '' | Set-Content $env:TEMP/cluster_ips 
+
+Write-Host
+Write-Output "Detected IPs:"
+Write-Output "-------------"
+Get-Content $env:TEMP/cluster_ips
+
+Remove-Item $env:TEMP/cluster_ips
\ No newline at end of file