[WIP] Created ci-entrypoint.sh

scripts/ci-entrypoint.sh

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+#!/bin/bash
+
+# Copyright 2020 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+###############################################################################
+
+# To run locally, set GCP_CLIENT_ID, GCP_CLIENT_SECRET, GCP_SUBSCRIPTION_ID, GCP_TENANT_ID
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+#Install kubectl
+REPO_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+KUBECTL="${REPO_ROOT}/hack/tools/bin/kubectl"
+cd "${REPO_ROOT}" && make "${KUBECTL##*/}"
+# export the variable so it is available in bash -c wait_for_nodes below
+export KUBECTL
+
+# shellcheck source=hack/ensure-go.sh
+source "${REPO_ROOT}/hack/ensure-go.sh"
+# shellcheck source=hack/ensure-kind.sh
+source "${REPO_ROOT}/hack/ensure-kind.sh"
+
+# building kubectl from tools folder
+mkdir -p "${REPO_ROOT}/hack/tools/bin"
+KUBECTL=$(realpath hack/tools/bin/kubectl)
+# export the variable so it is available in bash -c wait_for_nodes below
+export KUBECTL
+make "${KUBECTL}" &>/dev/null
+echo "KUBECTL is set to ${KUBECTL}"
+
+# shellcheck source=hack/ensure-kustomize.sh
+source "${REPO_ROOT}/hack/ensure-kustomize.sh"
+# shellcheck source=hack/ensure-tags.sh
+source "${REPO_ROOT}/hack/ensure-tags.sh"
+# shellcheck source=hack/parse-prow-creds.sh
+source "${REPO_ROOT}/hack/parse-prow-creds.sh"
+# shellcheck source=hack/util.sh
+source "${REPO_ROOT}/hack/util.sh"
+
+get_random_region=(){
+    local REGIONS=("asia-east1-a" "asia-east2-b" "asia-northeast3-c" "asia-south1-a" "europe-north1-a" "europe-west3-c" "northamerica-northeast2-b")
+    echo "${REGIONS[${RANDOM} % ${#REGIONS[@]}]}"
+}
+
+setup(){
+	# setup REGISTRY for custom images.
+    : "${REGISTRY:?Environment variable empty or not defined.}"
+    if [[ -z "${CLUSTER_TEMPLATE:-}" ]]; then
+        select_cluster_template
+    fi
+
+    export GCP_REGION="<GCP_REGION>"
+    export GCP_PROJECT="<GCP_PROJECT>"
+    export KUBERNETES_VERSION=1.20.9
+    export GCP_CONTROL_PLANE_MACHINE_TYPE=n1-standard-2
+    export GCP_NODE_MACHINE_TYPE=n1-standard-2
+    export GCP_NETWORK_NAME=<GCP_NETWORK_NAME or default>
+    export CLUSTER_NAME="<CLUSTER_NAME>"
+}
+
+wait_for_nodes() {
+    echo "Waiting for ${GCP_CONTROL_PLANE_MACHINE_TYPE} gcp control plane machine(s) and ${GCP_NODE_MACHINE_TYPE} gcp node machine type to become ready."
+    # Ensure that all nodes are registered with the API server before checking for readiness
+    local total_nodes="$((GCP_CONTROL_PLANE_MACHINE_TYPE + GCP _NODE_MACHINE_TYPE))"
+     while [[ $("${KUBECTL}" get nodes -ojson | jq '.items | length') -ne "${total_nodes}" ]]; do
+        sleep 10
+    done
+
+    "${KUBECTL}" wait --for=condition=Ready node --all --timeout=5m
+    "${KUBECTL}" get nodes -owide
+}
+
+# cleanup all resources we use
+cleanup() {
+    timeout 1800 "${KUBECTL}" delete cluster "${CLUSTER_NAME}" || true
+    make kind-reset || true
+}
+
+on_exit() {
+    unset KUBECONFIG
+    # cleanup
+    if [[ -z "${SKIP_CLEANUP:-}" ]]; then
+        cleanup
+    fi
+}
+
+# setup all required variables and images
+setup
+
+trap on_exit EXIT
+export ARTIFACTS="${ARTIFACTS:-${PWD}/_artifacts}"
+
+# create cluster
+create_cluster
+
+# export the target cluster KUBECONFIG if not already set
+export KUBECONFIG="${KUBECONFIG:-${PWD}/kubeconfig}"
+
+export -f wait_for_nodes
+timeout --foreground 1800 bash -c wait_for_nodes
+
+if [[ "${#}" -gt 0 ]]; then
+    # disable error exit so we can run post-command cleanup
+    set +o errexit
+    "${@}"
+    EXIT_VALUE="${?}"
+    exit ${EXIT_VALUE}
+fi
+
+