From 01182158260209444e8314b8721209fd9221a733 Mon Sep 17 00:00:00 2001
From: Feruzjon Muyassarov <feruzjon.muyassarov@intel.com>
Date: Thu, 13 Oct 2022 16:06:09 +0300
Subject: [PATCH] Add ephemeral E2E test environment

This patch adds a script to run E2E test on kind ephemeral cluster
that gets deleted by the end of each test. Eventually, we will use
this script on pull requests as a presubmit test.

Signed-off-by: Feruzjon Muyassarov <feruzjon.muyassarov@intel.com>
---
 scripts/test-infra/test-e2e-presubmit.sh | 67 ++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100755 scripts/test-infra/test-e2e-presubmit.sh

diff --git a/scripts/test-infra/test-e2e-presubmit.sh b/scripts/test-infra/test-e2e-presubmit.sh
new file mode 100755
index 000000000..6905d148f
--- /dev/null
+++ b/scripts/test-infra/test-e2e-presubmit.sh
@@ -0,0 +1,67 @@
+#!/bin/bash -e
+set -o pipefail
+
+# Configure environment
+KIND_IMAGE="kindest/node:v1.25.3"
+export IMAGE_REGISTRY="localhost:5001"
+export CLUSTER_NAME=$(git describe --tags --dirty --always)
+export KUBECONFIG="/tmp/kubeconfig_$CLUSTER_NAME"
+
+# create registry container unless it already exists
+reg_name='kind-registry'
+reg_port='5001'
+if [ "$(docker inspect -f '{{.State.Running}}' "${reg_name}" 2>/dev/null || true)" != 'true' ]; then
+  docker run \
+    -d --restart=always -p "127.0.0.1:${reg_port}:5000" --name "${reg_name}" \
+    registry:2
+fi
+
+# create a cluster with the local registry enabled in containerd
+cat <<EOF | kind create cluster --kubeconfig $KUBECONFIG --config=-
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+name: $CLUSTER_NAME
+nodes:
+- role: control-plane
+  image: $KIND_IMAGE
+- role: worker
+  image: $KIND_IMAGE
+- role: worker
+  image: $KIND_IMAGE
+containerdConfigPatches:
+- |-
+  [plugins."io.containerd.grpc.v1.cri".registry.mirrors."localhost:${reg_port}"]
+    endpoint = ["http://${reg_name}:5000"]
+EOF
+
+# connect the registry to the cluster network if not already connected
+if [ "$(docker inspect -f='{{json .NetworkSettings.Networks.kind}}' "${reg_name}")" = 'null' ]; then
+  docker network connect "kind" "${reg_name}"
+fi
+
+cat <<EOF | kubectl apply -f -
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: local-registry-hosting
+  namespace: kube-public
+data:
+  localRegistryHosting.v1: |
+    host: "localhost:${reg_port}"
+    help: "https://kind.sigs.k8s.io/docs/user/local-registry/"
+EOF
+
+# build the local image
+make image
+
+# push the image to the local registry
+make push
+
+# run the tests
+make e2e-test || rc=$?
+
+# clean up the environment
+kind delete cluster --kubeconfig $KUBECONFIG --name $CLUSTER_NAME
+echo "Deleting ${reg_name} container ..."
+docker rm -f "${reg_name}"
+exit $rc