mirror of https://github.com/knative/func.git
108 lines
3.2 KiB
Bash
108 lines
3.2 KiB
Bash
#!/usr/bin/env bash
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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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# https://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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init() {
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find_executables
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populate_environment
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define_colors
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}
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find_executables() {
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KUBECTL=$(find_executable "kubectl")
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KIND=$(find_executable "kind")
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DAPR=$(find_executable "dapr")
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HELM=$(find_executable "helm")
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STERN=$(find_executable "stern")
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KN=$(find_executable "kn")
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JQ=$(find_executable "jq")
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}
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populate_environment() {
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# User's KUBECOFNIG and that used by these scripts should be isolated:
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export KUBECONFIG="$(cd "$(dirname "$0")" && pwd)/bin/kubeconfig.yaml"
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# Detect architecture, default to amd64 if unable to detect
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if [[ -z "${ARCH:-}" ]]; then
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local machine_arch=$(uname -m)
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case $machine_arch in
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x86_64) export ARCH="amd64" ;;
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aarch64|arm64) export ARCH="arm64" ;;
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*) export ARCH="amd64" ;;
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esac
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else
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export ARCH="$ARCH"
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fi
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export CONTAINER_ENGINE=${CONTAINER_ENGINE:-docker}
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export TERM="${TERM:-dumb}"
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echo "KUBECONFIG=${KUBECONFIG}"
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echo "CONTAINER_ENGINE=${CONTAINER_ENGINE}"
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echo "TERM=${TERM}"
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}
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define_colors() {
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# For some reason TERM=dumb results in the tput commands exiting 1. It must
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# not support that terminal type. A reasonable fallback should be "xterm".
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local TERM="$TERM"
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if [[ -z "$TERM" || "$TERM" == "dumb" ]]; then
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TERM="xterm" # Set TERM to a tput-friendly value when undefined or "dumb".
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fi
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# shellcheck disable=SC2155
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red=$(tput bold)$(tput setaf 1)
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# shellcheck disable=SC2155
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green=$(tput bold)$(tput setaf 2)
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# shellcheck disable=SC2155
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blue=$(tput bold)$(tput setaf 4)
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# shellcheck disable=SC2155
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grey=$(tput bold)$(tput setaf 8)
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# shellcheck disable=SC2155
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yellow=$(tput bold)$(tput setaf 11)
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# shellcheck disable=SC2155
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reset=$(tput sgr0)
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}
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# find returns the path to an executable by name.
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# An environment variable FUNC_TEST_$name takes precidence.
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# Next is an executable matching the name in hack/bin/
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# (the install location of hack/install-binaries.sh)
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# Finally, a matching executable from the current PATH is used.
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find_executable() {
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local name="$1" # requested binary name
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local path="" # the path to output
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# Use the environment variable if defined
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local env=$(echo "FUNC_TEST_$name" | awk '{print toupper($0)}')
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local path="${!env:-}"
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if [[ -x "$path" ]]; then
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echo "$path" & return 0
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fi
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# Use the binary installed into hack/bin/ by allocate.sh if
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# it exists.
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path=$(cd "$(dirname "$0")" && pwd)"/bin/$name"
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if [[ -x "$path" ]]; then
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echo "$path" & return 0
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fi
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# Finally fallback to anything matchin in the current PATH
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path=$(command -v "$name")
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if [[ -x "$path" ]]; then
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echo "$path" & return 0
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fi
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echo "Error: ${name} not found." >&2
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return 1
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}
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init "$@"
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