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59 lines
1.6 KiB
59 lines
1.6 KiB
#!/usr/bin/env bash
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# Copyright The Helm Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -euo pipefail
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# Example: kube::util::trap_add 'echo "in trap DEBUG"' DEBUG
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# See: http://stackoverflow.com/questions/3338030/multiple-bash-traps-for-the-same-signal
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kube::util::trap_add() {
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local trap_add_cmd
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trap_add_cmd=$1
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shift
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for trap_add_name in "$@"; do
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local existing_cmd
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local new_cmd
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# Grab the currently defined trap commands for this trap
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existing_cmd=`trap -p "${trap_add_name}" | awk -F"'" '{print $2}'`
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if [[ -z "${existing_cmd}" ]]; then
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new_cmd="${trap_add_cmd}"
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else
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new_cmd="${existing_cmd};${trap_add_cmd}"
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fi
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# Assign the test
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trap "${new_cmd}" "${trap_add_name}"
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done
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}
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# Opposite of kube::util::ensure-temp-dir()
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kube::util::cleanup-temp-dir() {
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rm -rf "${KUBE_TEMP}"
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}
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# Create a temp dir that'll be deleted at the end of this bash session.
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#
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# Vars set:
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# KUBE_TEMP
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kube::util::ensure-temp-dir() {
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if [[ -z ${KUBE_TEMP-} ]]; then
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KUBE_TEMP=$(mktemp -d 2>/dev/null || mktemp -d -t kubernetes.XXXXXX)
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kube::util::trap_add kube::util::cleanup-temp-dir EXIT
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fi
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}
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