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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| #!/bin/bash | ||
| # | ||
| # List or check that the golang version embedded in files (specifically our | ||
| # Dockerfile) is using a supported version of Go. | ||
| # Run with --show to list the images the script thinks are current. | ||
| # Run with --check (the default) to verify the Dockerfile contains a current | ||
| # image & version tag. | ||
| # | ||
|
|
||
| set -e | ||
| SCRIPT_DIR="$(readlink -f "$(dirname "${0}")")" | ||
| PROJECT_DIR="$(readlink -f "${SCRIPT_DIR}/..")" | ||
| WORKDIR="$(mktemp -d)" | ||
| CONTAINER_FILES=("${PROJECT_DIR}/Dockerfile") | ||
| GOVERSURL='https://go.dev/dl/?mode=json' | ||
| ACTION=check | ||
|
|
||
|
|
||
| fetch_versions() { | ||
| local url="$1" | ||
| local out="$2" | ||
| if [ -f "${out}" ]; then | ||
| return | ||
| fi | ||
| echo "Fetching Go versions..." >&2 | ||
| curl --fail -sL -o "${out}" "${url}" | ||
| } | ||
|
|
||
| extract_versions() { | ||
| local jsonfile="$1" | ||
| jq -r '.[].version' < "${jsonfile}" | \ | ||
| cut -d. -f1,2 | sort -u | sed -e 's,^go,,' | ||
| } | ||
|
|
||
| to_images() { | ||
| for a in "$@"; do | ||
| echo "docker.io/golang:${a}" | ||
| done | ||
| } | ||
|
|
||
| cleanup() { | ||
| # only used in trap, ignoe unreachable error | ||
| # shellcheck disable=SC2317 | ||
| rm -rf "${WORKDIR}" | ||
| } | ||
| trap cleanup EXIT | ||
|
|
||
|
|
||
| opts=$(getopt --name "$0" \ | ||
| -o "csf:" -l "check,show,file:,url:,versionsfile:" -- "$@") | ||
| eval set -- "$opts" | ||
|
|
||
| cli_cfiles=() | ||
| while true ; do | ||
| case "$1" in | ||
| -c|--check) | ||
| ACTION=check | ||
| shift | ||
| ;; | ||
| -s|--show) | ||
| ACTION=show | ||
| shift | ||
| ;; | ||
| -f|--file) | ||
| cli_cfiles+=("$2") | ||
| shift 2 | ||
| ;; | ||
| --url) | ||
| GOVERSURL="$2" | ||
| shift 2 | ||
| ;; | ||
| --versionsfile) | ||
| GOVERSIONSFILE="$2" | ||
| shift 2 | ||
| ;; | ||
| --) | ||
| shift | ||
| break | ||
| ;; | ||
| *) | ||
| echo "unexpected option: $1" >&2 | ||
| exit 2 | ||
| ;; | ||
| esac | ||
| done | ||
|
|
||
| if [ "${#cli_cfiles}" -gt 0 ]; then | ||
| CONTAINER_FILES=("${cli_cfiles[@]}") | ||
| fi | ||
|
|
||
| GV="${GOVERSIONSFILE:-${WORKDIR}/go-versions.json}" | ||
| fetch_versions "${GOVERSURL}" "${GV}" | ||
| mapfile -t go_major_vers < <(extract_versions "${GV}") | ||
|
|
||
| echo "Found Go versions:" "${go_major_vers[@]}" >&2 | ||
| if [ "${ACTION}" = show ]; then | ||
| to_images "${go_major_vers[@]}" | ||
| exit 1 | ||
| fi | ||
|
|
||
| mapfile -t valid_images < <(to_images "${go_major_vers[@]}") | ||
| errors=0 | ||
| for cf in "${CONTAINER_FILES[@]}"; do | ||
| echo "Checking $cf ..." >&2 | ||
| if grep -q -e "${valid_images[0]}" -e "${valid_images[1]}" "${cf}" ; then | ||
| echo "${cf}: OK" >&2 | ||
| else | ||
| echo "${cf}: no current golang image found" >&2 | ||
| errors=1 | ||
| fi | ||
| done | ||
|
|
||
| exit "${errors}" |
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