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Copy pathutil.sh
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58 lines (49 loc) · 1.63 KB
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#!/usr/bin/env bash
# Copyright The Helm 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 -euo pipefail
# Example: kube::util::trap_add 'echo "in trap DEBUG"' DEBUG
# See: http://stackoverflow.com/questions/3338030/multiple-bash-traps-for-the-same-signal
kube::util::trap_add() {
local trap_add_cmd
trap_add_cmd=$1
shift
for trap_add_name in "$@"; do
local existing_cmd
local new_cmd
# Grab the currently defined trap commands for this trap
existing_cmd=`trap -p "${trap_add_name}" | awk -F"'" '{print $2}'`
if [[ -z "${existing_cmd}" ]]; then
new_cmd="${trap_add_cmd}"
else
new_cmd="${existing_cmd};${trap_add_cmd}"
fi
# Assign the test
trap "${new_cmd}" "${trap_add_name}"
done
}
# Opposite of kube::util::ensure-temp-dir()
kube::util::cleanup-temp-dir() {
rm -rf "${KUBE_TEMP}"
}
# Create a temp dir that'll be deleted at the end of this bash session.
#
# Vars set:
# KUBE_TEMP
kube::util::ensure-temp-dir() {
if [[ -z ${KUBE_TEMP-} ]]; then
KUBE_TEMP=$(mktemp -d 2>/dev/null || mktemp -d -t kubernetes.XXXXXX)
kube::util::trap_add kube::util::cleanup-temp-dir EXIT
fi
}