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#!/usr/bin/env bash
# SPDX-License-Identifier: AGPL-3.0-or-later
#
# Go versions manager to install and maintain golang [1] binaries & packages.
#
# [1] https://golang.org/doc/devel/release#policy
# shellcheck source=utils/lib.sh
. /dev/null
# configure golang environment for go.vm
# --------------------------------------
_GO_DL_URL="https://go.dev/dl"
GOVERSION="${GOVERSION:-go$(awk '/^go /{print $2}' "${REPO_ROOT}/go.mod")}"
GOTOOLCHAIN=local
GOROOT="${REPO_ROOT}/.govm/${GOVERSION}"
GOENV="${GOROOT}/.config/go.env"
GOVM_EXE="${GOROOT}/bin/go"
GOPATH="${REPO_ROOT}/local/${GOVERSION}" # no support for multiple path names!!
GOCACHE="${GOPATH}/.cache/go-build"
GOMODCACHE="${GOPATH}/pkg/mod"
# implement go functions
# -----------------------
go.help() {
cat <<EOF
go: GOROOT=${GOROOT}
install : compiles and installs packages
EOF
}
go.tool() {
# shortcut for "go tool .." in the Go environment
go.env.dev
"${GOVM_EXE}" tool "$@"
}
go.env.dev() {
if [ -z "$_GO_DEVTOOLS_INSTALLED" ]; then
build_msg INSTALL "[pkg.go.dev] ./go.mod: developer and CI tools"
go.tidy
else
go.vm.ensure
_GO_DEVTOOLS_INSTALLED=1
fi
}
go.tidy() {
go.vm.ensure
"${GOVM_EXE}" mod tidy
chmod -R u+w "${GOMODCACHE}"
}
go.clean() {
if ! go.vm.is_installed; then
build_msg CLEAN "[Go] not installed"
return 0
fi
build_msg CLEAN "[Go] drop folders ${GOROOT} and ${GOPATH}"
rm -rf "${GOROOT}" "${GOPATH}"
}
go.install() {
go.vm.ensure
GOENV="${GOENV}" "${GOVM_EXE}" install "$@"
# not sure why, but go installs some files without setting the write access
# for the file owner
chmod -R u+w "${GOMODCACHE}"
}
go.os() {
local OS
case "$(command uname -a)xx" in
Linux\ *) OS=linux ;;
Darwin\ *) OS=darwin ;;
FreeBSD\ *) OS=freebsd ;;
CYGWIN* | MSYS* | MINGW*) OS=windows ;;
*) die 42 "OS is unknown: $(command uname -a)" ;;
esac
echo "${OS}"
}
go.arch() {
local ARCH
case "$(command uname -m)" in
"x86_64") ARCH=amd64 ;;
"aarch64") ARCH=arm64 ;;
"armv6" | "armv7l") ARCH=armv6l ;;
"armv8") ARCH=arm64 ;;
.*386.*) ARCH=386 ;;
ppc64*) ARCH=ppc64le ;;
*) die 42 "ARCH is unknown: $(command uname -m)" ;;
esac
echo "${ARCH}"
}
# Go version management (go.vm)
# -----------------------------
go.vm.ensure() {
if ! go.vm.is_installed; then
# shellcheck disable=SC2119
go.vm.install
fi
}
go.vm.is_installed() {
# is true if "go" command is installed
[[ -f "${GOROOT}/bin/go" ]]
}
# shellcheck disable=SC2120
go.vm.install() {
# Go versions manager; to install Go at arbitrary place:
#
# usage: go.vm.install <version> <dest>
local version dest fname sha size tmp
version="${1:-$GOVERSION}"
dest="${2:-$GOROOT}"
info_msg "Install Go in ${dest}"
# HINT: the python requirements needed by go.vm.version are taken from the
# developer environment. If it is not yet installed, install it now ..
pyenv.install
# fetch go version ..
local buf=()
mapfile -t buf < <(
go.vm.version "${version}" archive "$(go.os)" "$(go.arch)" filename sha256 size
)
if [ ${#buf[@]} -eq 0 ]; then
die 42 "can't find info of golang version: ${version}"
fi
fname="${buf[0]}"
sha="${buf[1]}"
size="$(numfmt --to=iec "${buf[2]}")"
info_msg "Download go binary ${fname} (${size}B)"
cache_download "${_GO_DL_URL}/${fname}" "${fname}"
pushd "${CACHE}" &>/dev/null
echo "${sha} ${fname}" >"${fname}.sha256"
if ! sha256sum -c "${fname}.sha256" >/dev/null; then
die 42 "downloaded file ${fname} checksum does not match"
else
info_msg "${fname} checksum OK"
fi
popd &>/dev/null
info_msg "install golang"
tmp="$(mktemp -d)"
tar -C "${tmp}" -xzf "${CACHE}/${fname}"
rm -rf "${dest}"
mkdir -p "$(dirname "${dest}")"
mv "${tmp}/go" "${dest}"
mkdir -p "$(dirname "$GOENV")"
export GOENV
"${GOVM_EXE}" telemetry off
"${GOVM_EXE}" env -w \
GOBIN="$GOBIN" \
GOTOOLCHAIN="$GOTOOLCHAIN" \
GOCACHE="$GOCACHE" \
GOPATH="$GOPATH" \
GOMODCACHE="$GOMODCACHE"
mkdir -p "${GOMODCACHE}"
}
go.vm.list() {
# Go versions manager; list Go versions (stable)
"${PY_ENV_BIN}/python" <<EOF
import sys, json, requests
resp = requests.get("${_GO_DL_URL}/?mode=json&include=all")
for ver in json.loads(resp.text):
if not ver['stable']:
continue
for f in ver['files']:
if f['kind'] != 'archive' or not f['size'] or not f['sha256'] or len(f['os']) < 2:
continue
print(" %(version)-10s|%(os)-8s|%(arch)-8s|%(filename)-30s|%(size)-10s|%(sha256)s" % f)
EOF
}
go.vm.version() {
# Print information about a Go distribution. To print filename sha256 and
# size of the archive that fits to your OS and host:
#
# go.ver_info "${GOVERSION}" archive "$(go.os)" "$(go.arch)" filename sha256 size
#
# usage: go.vm.version <go-vers> <kind> <os> <arch> [filename|sha256|size]
#
# kind: [archive|source|installer]
# os: [darwin|freebsd|linux|windows]
# arch: [amd64|arm64|386|armv6l|ppc64le|s390x]
"${PY_ENV_BIN}/python" - "$@" <<EOF
import sys, json, requests
resp = requests.get("${_GO_DL_URL}/?mode=json&include=all")
for ver in json.loads(resp.text):
if ver['version'] != sys.argv[1]:
continue
for f in ver['files']:
if (f['kind'] != sys.argv[2] or f['os'] != sys.argv[3] or f['arch'] != sys.argv[4]):
continue
for x in sys.argv[5:]:
print(f[x])
sys.exit(0)
sys.exit(42)
EOF
}
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