Merge pull request openshift#26 from Karthik-K-N/fix-kustomize

🐛 Added file to download kustomize

hack/ensure-kustomize.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+# Copyright 2022 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.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+BIN_ROOT="${KUBE_ROOT}/hack/tools/bin"
+
+kustomize_version=4.4.1
+
+goarch="$(go env GOARCH)"
+goos="$(go env GOOS)"
+if [ "$goos" != "linux" ] && [ "$goos" != "darwin" ]; then
+  echo "OS '$OSTYPE' not supported. Aborting." >&2
+  exit 1
+fi
+
+# Ensure the kustomize tool exists and is a viable version, or installs it
+verify_kustomize_version() {
+  if ! [ -x "$(command -v "${BIN_ROOT}/kustomize")" ]; then
+    echo "fetching kustomize@${kustomize_version}"
+    if ! [ -d "${BIN_ROOT}" ]; then
+      mkdir -p "${BIN_ROOT}"
+    fi
+    archive_name="kustomize-v${kustomize_version}.tar.gz"
+    curl -sLo "${BIN_ROOT}/${archive_name}" "https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv${kustomize_version}/kustomize_v${kustomize_version}_${goos}_${goarch}.tar.gz"
+    tar -zvxf "${BIN_ROOT}/${archive_name}" -C "${BIN_ROOT}/"
+    chmod +x "${BIN_ROOT}/kustomize"
+    rm "${BIN_ROOT}/${archive_name}"
+  fi
+}
+
+verify_kustomize_version