Add update client script

Author: mbohlool

scripts/update-client.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+
+# Copyright 2017 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.
+
+# Script to fetch latest swagger spec.
+# Puts the updated spec at api/swagger-spec/
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+if ! which mvn > /dev/null 2>&1; then
+  echo "Maven is not installed."
+  exit
+fi
+
+SCRIPT_ROOT=$(dirname "${BASH_SOURCE}")
+CLIENT_ROOT="${SCRIPT_ROOT}/../kubernetes"
+
+pushd "${SCRIPT_ROOT}" > /dev/null
+SCRIPT_ROOT=`pwd`
+popd > /dev/null
+
+pushd "${CLIENT_ROOT}" > /dev/null
+CLIENT_ROOT=`pwd`
+popd > /dev/null
+
+TEMP_FOLDER=$(mktemp -d)
+trap "rm -rf ${TEMP_FOLDER}" EXIT SIGINT
+
+if [[ -z ${GEN_ROOT:-} ]]; then
+    GEN_ROOT="${TEMP_FOLDER}/gen"
+    echo ">>> Cloning gen repo"
+    git clone --recursive https://github.com/kubernetes-client/gen.git "${GEN_ROOT}"
+else
+    echo ">>> Reusing gen repo at ${GEN_ROOT}"
+fi
+
+echo ">>> Running java generator from the gen repo"
+"${GEN_ROOT}/openapi/java.sh" "${CLIENT_ROOT}" "${SCRIPT_ROOT}/../settings" 
+
+echo ">>> Done."