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#!/usr/bin/env bash
# Copyright 2014 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.
#
# -----------------------------------------------------------------------------
# CHANGELOG
# KubeEdge Authors:
# Some functions derived from https://github.com/kubernetes/kubernetes/blob/v1.19.0-beta.2/hack/utils.sh
# for update-vendor-licenses, verify-vendor-licenses
# 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="${trap_add_cmd}"
else
new_cmd="${trap_add_cmd};${existing_cmd}"
fi
# Assign the test. Disable the shellcheck warning telling that trap
# commands should be single quoted to avoid evaluating them at this
# point instead evaluating them at run time. The logic of adding new
# commands to a single trap requires them to be evaluated right away.
# shellcheck disable=SC2064
trap "${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
}
# outputs md5 hash of $1, works on macOS and Linux
function kube::util::md5() {
if which md5 >/dev/null 2>&1; then
md5 -q "$1"
else
md5sum "$1" | awk '{ print $1 }'
fi
}
# util::create_gopath_tree create the GOPATH tree
# Parameters:
# - $1: the root path of repo
# - $2: go path
function util:create_gopath_tree() {
local repo_root=$1
local go_path=$2
local go_pkg_dir="${go_path}/src/github.com/kubeedge/kubeedge"
go_pkg_dir=$(dirname "${go_pkg_dir}")
mkdir -p "${go_pkg_dir}"
if [[ ! -e "${go_pkg_dir}" || "$(readlink "${go_pkg_dir}")" != "${repo_root}" ]]; then
ln -snf "${repo_root}" "${go_pkg_dir}"
fi
}
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