From bed0151bd364daa2feed3071c297e031df9cba6c Mon Sep 17 00:00:00 2001
From: i-chvets <113444075+i-chvets@users.noreply.github.com>
Date: Thu, 31 Aug 2023 13:39:01 -0400
Subject: [PATCH] feat: configurable images for istio-gateway (#323)

# Description
More details in: https://github.com/canonical/istio-operators/issues/322

# Summary of changes:
- Added proxy-image config option.
- Updated manifest template with placeholder for proxy image.
- Modified charm code to render manifest with proxy image from configuration.

# Testing

For complete testing refer to https://github.com/canonical/istio-operators/issues/322
---------

Co-authored-by: Orfeas Kourkakis <orfeas.kourkakis@canonical.com>
---
 charms/istio-gateway/config.yaml       | 4 ++++
 charms/istio-gateway/src/charm.py      | 2 ++
 charms/istio-gateway/src/manifest.yaml | 2 +-
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/charms/istio-gateway/config.yaml b/charms/istio-gateway/config.yaml
index 354ba4c9..652dabb7 100644
--- a/charms/istio-gateway/config.yaml
+++ b/charms/istio-gateway/config.yaml
@@ -8,3 +8,7 @@ options:
     type: string
     description: |
       Type of service for the ingress gateway out of: 'ClusterIP', 'LoadBalancer', or 'NodePort'.
+  proxy-image:
+    default: 'docker.io/istio/proxyv2:1.17.3'
+    description: Istio Proxy image
+    type: string
diff --git a/charms/istio-gateway/src/charm.py b/charms/istio-gateway/src/charm.py
index 71a013e6..03829693 100755
--- a/charms/istio-gateway/src/charm.py
+++ b/charms/istio-gateway/src/charm.py
@@ -69,6 +69,7 @@ def start(self, event):
         rendered = template.render(
             kind=self.model.config["kind"],
             namespace=self.model.name,
+            proxy_image=self.model.config["proxy-image"],
             pilot_host=pilot["service-name"],
             pilot_port=pilot["service-port"],
             gateway_service_type=self.model.config["gateway_service_type"],
@@ -88,6 +89,7 @@ def remove(self, event):
         rendered = template.render(
             kind=self.model.config["kind"],
             namespace=self.model.name,
+            proxy_image=self.model.config["proxy-image"],
             pilot_host="foo",
             pilot_port="foo",
         )
diff --git a/charms/istio-gateway/src/manifest.yaml b/charms/istio-gateway/src/manifest.yaml
index d8e7fd33..c4f5c227 100644
--- a/charms/istio-gateway/src/manifest.yaml
+++ b/charms/istio-gateway/src/manifest.yaml
@@ -116,7 +116,7 @@ spec:
               value: standard
             - name: ISTIO_META_CLUSTER_ID
               value: Kubernetes
-          image: docker.io/istio/proxyv2:1.17.3
+          image: {{ proxy_image }}
           name: istio-proxy
           ports:
             - containerPort: 15021