You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
tailscale/tool/helm

70 lines
2.2 KiB
Bash

#!/usr/bin/env bash
# installs $(cat ./helm.rev) version of helm as $HOME/.cache/tailscale-helm
set -euo pipefail
if [[ "${CI:-}" == "true" ]]; then
set -x
fi
(
if [[ "${CI:-}" == "true" ]]; then
set -x
fi
repo_root="${BASH_SOURCE%/*}/../"
cd "$repo_root"
cachedir="$HOME/.cache/tailscale-helm"
tarball="${cachedir}.tar.gz"
read -r want_rev < "$(dirname "$0")/helm.rev"
got_rev=""
if [[ -x "${cachedir}/helm" ]]; then
got_rev=$("${cachedir}/helm" version --short)
got_rev="${got_rev#v}" # trim the leading 'v'
got_rev="${got_rev%+*}" # trim the trailing '+" followed by a commit SHA'
fi
if [[ "$want_rev" != "$got_rev" ]]; then
rm -rf "$cachedir" "$tarball"
if [[ -n "${IN_NIX_SHELL:-}" ]]; then
nix_helm="$(which -a helm | grep /nix/store | head -1)"
nix_helm="${nix_helm%/helm}"
nix_helm_rev="${nix_helm##*-}"
if [[ "$nix_helm_rev" != "$want_rev" ]]; then
echo "Wrong helm version in Nix, got $nix_helm_rev want $want_rev" >&2
exit 1
fi
ln -sf "$nix_helm" "$cachedir"
else
# works for linux and darwin
# https://github.com/helm/helm/releases
OS=$(uname -s | tr A-Z a-z)
ARCH=$(uname -m)
if [ "$ARCH" = "x86_64" ]; then
ARCH="amd64"
fi
if [ "$ARCH" = "aarch64" ]; then
ARCH="arm64"
fi
mkdir -p "$cachedir"
# When running on GitHub in CI, the below curl sometimes fails with
# INTERNAL_ERROR after finishing the download. The most common cause
# of INTERNAL_ERROR is glitches in intermediate hosts handling of
# HTTP/2 forwarding, so forcing HTTP 1.1 often fixes the issue. See
# https://github.com/tailscale/tailscale/issues/8988
curl -f -L --http1.1 -o "$tarball" -sSL "https://get.helm.sh/helm-v${want_rev}-${OS}-${ARCH}.tar.gz"
(cd "$cachedir" && tar --strip-components=1 -xf "$tarball")
rm -f "$tarball"
fi
fi
)
export PATH="$HOME/.cache/tailscale-helm:$PATH"
exec "$HOME/.cache/tailscale-helm/helm" "$@"