From 8b742e68b9edc861e90b460beff414e1fbeb27f2 Mon Sep 17 00:00:00 2001
From: Chandan Kumar <raukadah@gmail.com>
Date: Wed, 27 Nov 2024 11:19:20 +0530
Subject: [PATCH] Added run-with-webhook make target

It will help to run with webhook.

Signed-off-by: Chandan Kumar <raukadah@gmail.com>
---
 Makefile                       |  15 ++
 hack/clean_local_webhook.sh    |  11 ++
 hack/run_with_local_webhook.sh | 295 +++++++++++++++++++++++++++++++++
 3 files changed, 321 insertions(+)
 create mode 100644 hack/clean_local_webhook.sh
 create mode 100644 hack/run_with_local_webhook.sh

diff --git a/Makefile b/Makefile
index a63e46b..8c5f67e 100644
--- a/Makefile
+++ b/Makefile
@@ -428,3 +428,18 @@ kuttl-test-cleanup:
 	else \
 		echo "Namespce already cleaned up. Nothing to do"; \
 	fi
+
+# Used for webhook testing
+# The configure_local_webhook.sh script below will remove any OLM webhooks
+# for the operator and also scale its deployment replicas down to 0 so that
+# the operator can run locally.
+# We will attempt to catch SIGINT/SIGTERM and clean up the local webhooks,
+# but it may be necessary to manually run ./hack/clean_local_webhook.sh
+# before deploying with OLM again for other untrappable signals.
+SKIP_CERT ?=false
+.PHONY: run-with-webhook
+run-with-webhook: export METRICS_PORT?=8080
+run-with-webhook: export HEALTH_PORT?=8081
+run-with-webhook: manifests generate fmt vet ## Run a controller from your host.
+	/bin/bash hack/clean_local_webhook.sh
+	/bin/bash hack/run_with_local_webhook.sh
\ No newline at end of file
diff --git a/hack/clean_local_webhook.sh b/hack/clean_local_webhook.sh
new file mode 100644
index 0000000..5c853e3
--- /dev/null
+++ b/hack/clean_local_webhook.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+set -ex
+
+oc delete validatingwebhookconfiguration/vwatcher.kb.io --ignore-not-found
+oc delete mutatingwebhookconfiguration/mwatcher.kb.io --ignore-not-found
+oc delete validatingwebhookconfiguration/vwatcherapi.kb.io --ignore-not-found
+oc delete mutatingwebhookconfiguration/mwatcherapi.kb.io --ignore-not-found
+oc delete validatingwebhookconfiguration/vwatcherdecisionengine.kb.io --ignore-not-found
+oc delete mutatingwebhookconfiguration/mwatcherdecisionengine.kb.io --ignore-not-found
+oc delete validatingwebhookconfiguration/vwatcherapplier.kb.io --ignore-not-found
+oc delete mutatingwebhookconfiguration/mwatcherapplier.kb.io --ignore-not-found
\ No newline at end of file
diff --git a/hack/run_with_local_webhook.sh b/hack/run_with_local_webhook.sh
new file mode 100644
index 0000000..10c1bac
--- /dev/null
+++ b/hack/run_with_local_webhook.sh
@@ -0,0 +1,295 @@
+#!/bin/bash
+set -ex
+
+# Define a cleanup function
+cleanup() {
+    echo "Caught signal, cleaning up local webhooks..."
+    ./hack/clean_local_webhook.sh
+    exit 0
+}
+
+# Set trap to catch SIGINT and SIGTERM
+trap cleanup SIGINT SIGTERM
+
+TMPDIR=${TMPDIR:-"/tmp/k8s-webhook-server/serving-certs"}
+SKIP_CERT=${SKIP_CERT:-false}
+CRC_IP=${CRC_IP:-$(/sbin/ip -o -4 addr list crc | awk '{print $4}' | cut -d/ -f1)}
+FIREWALL_ZONE=${FIREWALL_ZONE:-"libvirt"}
+SKIP_FIREWALL=${SKIP_FIREWALL:-false}
+
+if [ "$SKIP_FIREWALL" = false ] ; then
+    #Open 9443
+    sudo firewall-cmd --zone=${FIREWALL_ZONE} --add-port=9443/tcp
+    sudo firewall-cmd --runtime-to-permanent
+fi
+
+# Generate the certs and the ca bundle
+if [ "$SKIP_CERT" = false ] ; then
+    mkdir -p ${TMPDIR}
+    rm -rf ${TMPDIR}/* || true
+
+    openssl req -newkey rsa:2048 -days 3650 -nodes -x509 \
+    -subj "/CN=${HOSTNAME}" \
+    -addext "subjectAltName = IP:${CRC_IP}" \
+    -keyout ${TMPDIR}/tls.key \
+    -out ${TMPDIR}/tls.crt
+
+    cat ${TMPDIR}/tls.crt ${TMPDIR}/tls.key | base64 -w 0 > ${TMPDIR}/bundle.pem
+
+fi
+
+CA_BUNDLE=`cat ${TMPDIR}/bundle.pem`
+
+# Patch the webhook(s)
+cat >> ${TMPDIR}/patch_webhook_configurations.yaml <<EOF_CAT
+apiVersion: admissionregistration.k8s.io/v1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: vwatcher.kb.io
+webhooks:
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    caBundle: ${CA_BUNDLE}
+    url: https://${CRC_IP}:9443/validate-watcher-openstack-org-v1beta1-watcher
+  failurePolicy: Fail
+  matchPolicy: Equivalent
+  name: vwatcher.kb.io
+  objectSelector: {}
+  rules:
+  - apiGroups:
+    - watcher.openstack.org
+    apiVersions:
+    - v1beta1
+    operations:
+    - CREATE
+    - UPDATE
+    resources:
+    - watcher
+    scope: '*'
+  sideEffects: None
+  timeoutSeconds: 10
+---
+apiVersion: admissionregistration.k8s.io/v1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: mwatcher.kb.io
+webhooks:
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    caBundle: ${CA_BUNDLE}
+    url: https://${CRC_IP}:9443/mutate-watcher-openstack-org-v1beta1-watcher
+  failurePolicy: Fail
+  matchPolicy: Equivalent
+  name: mwatcher.kb.io
+  objectSelector: {}
+  rules:
+  - apiGroups:
+    - watcher.openstack.org
+    apiVersions:
+    - v1beta1
+    operations:
+    - CREATE
+    - UPDATE
+    resources:
+    - watcher
+    scope: '*'
+  sideEffects: None
+  timeoutSeconds: 10
+---
+apiVersion: admissionregistration.k8s.io/v1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: vwatcherapi.kb.io
+webhooks:
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    caBundle: ${CA_BUNDLE}
+    url: https://${CRC_IP}:9443/validate-watcher-openstack-org-v1beta1-watcherapi
+  failurePolicy: Fail
+  matchPolicy: Equivalent
+  name: vwatcherapi.kb.io
+  objectSelector: {}
+  rules:
+  - apiGroups:
+    - watcher.openstack.org
+    apiVersions:
+    - v1beta1
+    operations:
+    - CREATE
+    - UPDATE
+    resources:
+    - watcherapis
+    scope: '*'
+  sideEffects: None
+  timeoutSeconds: 10
+---
+apiVersion: admissionregistration.k8s.io/v1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: mwatcherapi.kb.io
+webhooks:
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    caBundle: ${CA_BUNDLE}
+    url: https://${CRC_IP}:9443/mutate-watcher-openstack-org-v1beta1-watcherapi
+  failurePolicy: Fail
+  matchPolicy: Equivalent
+  name: mwatcherapi.kb.io
+  objectSelector: {}
+  rules:
+  - apiGroups:
+    - watcher.openstack.org
+    apiVersions:
+    - v1beta1
+    operations:
+    - CREATE
+    - UPDATE
+    resources:
+    - watcherapis
+    scope: '*'
+  sideEffects: None
+  timeoutSeconds: 10
+---
+apiVersion: admissionregistration.k8s.io/v1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: vwatcherdecisionengine.kb.io
+webhooks:
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    caBundle: ${CA_BUNDLE}
+    url: https://${CRC_IP}:9443/validate-watcher-openstack-org-v1beta1-watcherdecisionengine
+  failurePolicy: Fail
+  matchPolicy: Equivalent
+  name: vwatcherdecisionengine.kb.io
+  objectSelector: {}
+  rules:
+  - apiGroups:
+    - watcher.openstack.org
+    apiVersions:
+    - v1beta1
+    operations:
+    - CREATE
+    - UPDATE
+    resources:
+    - watcherdecisionengines
+    scope: '*'
+  sideEffects: None
+  timeoutSeconds: 10
+---
+apiVersion: admissionregistration.k8s.io/v1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: mwatcherdecisionengine.kb.io
+webhooks:
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    caBundle: ${CA_BUNDLE}
+    url: https://${CRC_IP}:9443/mutate-watcher-openstack-org-v1beta1-watcherdecisionengine
+  failurePolicy: Fail
+  matchPolicy: Equivalent
+  name: mwatcherdecisionengine.kb.io
+  objectSelector: {}
+  rules:
+  - apiGroups:
+    - watcher.openstack.org
+    apiVersions:
+    - v1beta1
+    operations:
+    - CREATE
+    - UPDATE
+    resources:
+    - watcherdecisionengines
+    scope: '*'
+  sideEffects: None
+  timeoutSeconds: 10
+---
+apiVersion: admissionregistration.k8s.io/v1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: vwatcherapplier.kb.io
+webhooks:
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    caBundle: ${CA_BUNDLE}
+    url: https://${CRC_IP}:9443/validate-watcher-openstack-org-v1beta1-watcherapplier
+  failurePolicy: Fail
+  matchPolicy: Equivalent
+  name: vwatcherapplier.kb.io
+  objectSelector: {}
+  rules:
+  - apiGroups:
+    - watcher.openstack.org
+    apiVersions:
+    - v1beta1
+    operations:
+    - CREATE
+    - UPDATE
+    resources:
+    - watcherappliers
+    scope: '*'
+  sideEffects: None
+  timeoutSeconds: 10
+---
+apiVersion: admissionregistration.k8s.io/v1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: mwatcherapplier.kb.io
+webhooks:
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    caBundle: ${CA_BUNDLE}
+    url: https://${CRC_IP}:9443/mutate-watcher-openstack-org-v1beta1-watcherapplier
+  failurePolicy: Fail
+  matchPolicy: Equivalent
+  name: mwatcherapplier.kb.io
+  objectSelector: {}
+  rules:
+  - apiGroups:
+    - watcher.openstack.org
+    apiVersions:
+    - v1beta1
+    operations:
+    - CREATE
+    - UPDATE
+    resources:
+    - watcherappliers
+    scope: '*'
+  sideEffects: None
+  timeoutSeconds: 10
+EOF_CAT
+
+oc apply -n openstack -f ${TMPDIR}/patch_webhook_configurations.yaml
+
+# Scale-down operator deployment replicas to zero and remove OLM webhooks
+CSV_NAME="$(oc get csv -n openstack-operators -l operators.coreos.com/watcher-operator.openstack-operators -o name)"
+
+if [ -n "${CSV_NAME}" ]; then
+    CUR_REPLICAS=$(oc get -n openstack-operators "${CSV_NAME}" -o=jsonpath='{.spec.install.spec.deployments[0].spec.replicas}')
+    CUR_WEBHOOK_DEFS=$(oc get -n openstack-operators "${CSV_NAME}" -o=jsonpath='{.spec.webhookdefinitions}')
+
+    # Back-up CSV if it currently uses OLM defaults for deployment replicas or webhook definitions
+    if [[ "${CUR_REPLICAS}" -gt 0 || ( -n "${CUR_WEBHOOK_DEFS}" && "${CUR_WEBHOOK_DEFS}" != "[]" ) ]]; then
+        CSV_FILE=$(mktemp -t "$(echo "${CSV_NAME}" | cut -d "/" -f 2).XXXXXX" --suffix .json)
+        oc get -n openstack-operators "${CSV_NAME}" -o json | \
+        jq -r 'del(.metadata.generation, .metadata.resourceVersion, .metadata.uid)'  > "${CSV_FILE}"
+
+        printf \
+        "\n\tNow patching operator CSV to remove its OLM deployment and associated webhooks.
+        The original OLM version of the operator's CSV has been copied to %s.  To restore it, use:
+        oc patch -n openstack-operators %s --type=merge --patch-file=%s\n\n" "${CSV_FILE}" "${CSV_NAME}" "${CSV_FILE}"
+    fi
+
+    oc patch "${CSV_NAME}" -n openstack-operators --type=json -p="[{'op': 'replace', 'path': '/spec/install/spec/deployments/0/spec/replicas', 'value': 0}]"
+    oc patch "${CSV_NAME}" -n openstack-operators --type=json -p="[{'op': 'replace', 'path': '/spec/webhookdefinitions', 'value': []}]"
+fi
+
+go run ./main.go -metrics-bind-address ":${METRICS_PORT}" -health-probe-bind-address ":${HEALTH_PORT}"