TrueChartsClone/.github/scripts/fetch_helm_deps.sh

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#!/bin/bash
# require go-yq
command -v go-yq >/dev/null 2>&1 || {
printf >&2 "%s\n" "❌ go-yq (https://github.com/mikefarah/yq) is not installed. Aborting."
exit 1
}
# define defaults
cache_path=${cache_path:-./tgz_cache}
charts_path=${charts_path:-./charts}
# Do NOT persist this directory, in order to always have the latest index for this run.
index_cache=${index_cache:-./index_cache}
mkdir -p "$cache_path"
trains=(
"enterprise"
"stable"
"incubator"
"dependency"
"operators"
)
load_gpg_key() {
echo ""
echo "⏬ Downloading and Loading TrueCharts pgp Public Key"
gpg_dir=.cr-gpg
mkdir -p "$gpg_dir"
curl --silent https://keybase.io/truecharts/pgp_keys.asc | gpg --dearmor > $gpg_dir/pubring.gpg || echo "❌ Couldn't load Public Key."
curl --silent https://cert-manager.io/public-keys/cert-manager-keyring-2021-09-20-1020CF3C033D4F35BAE1C19E1226061C665DF13E.gpg > $gpg_dir/certman.gpg || echo "❌ Couldn't load certman Public Key."
echo "✅ Public Key loaded successfully..."
echo ""
}
export -f load_gpg_key
download_deps() {
local train_chart="$1"
# Extract dependencies for the Chart
deps=$(go-yq '.dependencies' "$charts_path/$train_chart/Chart.yaml")
# Find how many deps exist, so we can loop through them
length=$(echo "$deps" | go-yq '. | length')
echo "🤖🔨 Processing <$charts_path/$train_chart>... Dependencies: $length"
echo ""
for idx in $(eval echo "{0..$length}"); do
# Retrieve info for the dep in the current index..
curr_dep=$(echo "$deps" | pos="$idx" go-yq '.[env(pos)]')
if [ ! "$curr_dep" == null ]; then
name=$(echo "$curr_dep" | go-yq '.name')
version=$(echo "$curr_dep" | go-yq '.version')
repo=$(echo "$curr_dep" | go-yq '.repository')
# Remove http:// or https:// from url to create a dir name
repo_dir="${repo#http://}"
repo_dir="${repo#https://}"
echo "**********"
echo "🔗 Dependency: $name"
echo "🆚 Version: $version"
echo "🏠 Repository: $repo"
echo ""
if [ -f "$cache_path/$repo_dir/$name-$version.tgz" ]; then
echo "✅ Dependency exists in cache..."
else
echo "🤷‍♂️ Dependency does not exists in cache..."
repo_url="$repo/index.yaml"
if [ -f "$index_cache/$repo_dir/index.yaml" ]; then
echo "✅ Index for <$repo> exists!"
else
echo "⏬ Index for <$repo> is missing. Downloading from <$repo_url>..."
mkdir -p $index_cache/$repo_dir
wget --quiet "$repo_url" -O "$index_cache/$repo_dir/index.yaml"
if [ ! $? ]; then
echo "❌ wget encountered an error..."
exit 1
fi
if [ -f "$index_cache/$repo_dir/index.yaml" ]; then
echo "✅ Downloaded index for <$repo>!"
else
echo "❌ Failed to download index for <$repo> from <$repo_url>"
exit 1
fi
fi
# At the time of writing this, only 1 url existed (.urls[0]) pointing to the actual tgz.
# Extract url from repo_url. It's under .entries.DEP_NAME.urls. We filter the specific version first (.version)
dep_url=$(v="$version" n="$name" go-yq '.entries.[env(n)].[] | select (.version == env(v)) | .urls.[0]' "$index_cache/$repo_dir/index.yaml")
# tmp hotpatch for cert-manager
if [[ ! "$dep_url" == "https"* ]]; then
dep_url="https://charts.jetstack.io/${dep_url}"
fi
echo ""
echo "⏬ Downloading dependency $name-$version from $dep_url..."
mkdir -p "$cache_path/$repo_dir"
wget --quiet "$dep_url" -P "$cache_path/$repo_dir"
wget --quiet "$dep_url.prov" -P "$cache_path/$repo_dir" || echo "failed downloading .prov"
if [ ! $? ]; then
echo "❌ wget encountered an error..."
if [[ "$train_chart" =~ incubator\/.* ]]; then
helm dependency build "$charts_path/$train_chart/Chart.yaml" || \
helm dependency update "$charts_path/$train_chart/Chart.yaml"|| exit 1
elif [[ "$name" =~ "cert-manager" ]]; then
helm dependency build "$charts_path/$train_chart/Chart.yaml" --verify --keyring $gpg_dir/certman.gpg || \
helm dependency update "$charts_path/$train_chart/Chart.yaml" --verify --keyring $gpg_dir/certman.gpg || exit 1
else
helm dependency build "$charts_path/$train_chart/Chart.yaml" --verify --keyring $gpg_dir/pubring.gpg || \
helm dependency update "$charts_path/$train_chart/Chart.yaml" --verify --keyring $gpg_dir/pubring.gpg || exit 1
fi
fi
if [ -f "$cache_path/$repo_dir/$name-$version.tgz" ]; then
echo "✅ Dependency Downloaded!"
if [[ "$name" =~ "cert-manager" ]]; then
helm verify $cache_path/$repo_dir/$name-$version.tgz --keyring $gpg_dir/certman.gpg || \
helm verify $cache_path/$repo_dir/$name-$version.tgz --keyring $gpg_dir/certman.gpg || exit 1
elif [[ ! "$train_chart" =~ incubator\/.* ]]; then
echo "Validating dependency signature..."
helm verify $cache_path/$repo_dir/$name-$version.tgz --keyring $gpg_dir/pubring.gpg || \
helm verify $cache_path/$repo_dir/$name-$version.tgz --keyring $gpg_dir/pubring.gpg || exit 1
else
echo "Skipping dependency signature verification for $train_chart..."
fi
else
echo "❌ Failed to download dependency"
# Try helm dependency build/update or otherwise fail fast if a dep fails to download...
if [[ "$train_chart" =~ incubator\/.* ]]; then
helm dependency build "$charts_path/$train_chart/Chart.yaml" || \
helm dependency update "$charts_path/$train_chart/Chart.yaml"|| exit 1
elif [[ "$name" =~ "cert-manager" ]]; then
helm dependency build "$charts_path/$train_chart/Chart.yaml" --verify --keyring $gpg_dir/certman.gpg || \
helm dependency update "$charts_path/$train_chart/Chart.yaml" --verify --keyring $gpg_dir/certman.gpg || exit 1
else
helm dependency build "$charts_path/$train_chart/Chart.yaml" --verify --keyring $gpg_dir/pubring.gpg || \
helm dependency update "$charts_path/$train_chart/Chart.yaml" --verify --keyring $gpg_dir/pubring.gpg || exit 1
fi
fi
fi
echo ""
mkdir -p "$charts_path/$train_chart/charts"
echo "📝 Copying dependency <$name-$version.tgz> to <$charts_path/$train_chart/charts>..."
cp "$cache_path/$repo_dir/$name-$version.tgz" "$charts_path/$train_chart/charts"
if [ -f "$charts_path/$train_chart/charts/$name-$version.tgz" ]; then
echo "✅ Dependency copied!"
echo ""
else
echo "❌ Failed to copy dependency"
# Try helm dependency build/update or otherwise fail fast if a dep fails to copy...
helm dependency build "$charts_path/$train_chart/Chart.yaml" || \
helm dependency update "$charts_path/$train_chart/Chart.yaml" || exit 1
fi
fi
done
}
export -f download_deps
load_gpg_key
if [ -z "$1" ]; then
for train in "${trains[@]}"; do
for chart in $(ls "$charts_path/$train"); do
download_deps "${train}/${chart}"
done
done
else
download_deps "$1"
fi