k8s_go_mod_update.sh

#!/bin/bash

# This script is needed to help us resolve the k8s go modules that breaks:
# go list -m -json -mod=mod all
# Ref: https://github.com/kubernetes-csi/csi-driver-host-path/pull/583

# How to use: bash go_k8s_mod_update.sh <kubernetes-version>

# Strict error handling
set -euo pipefail

# Function to print usage and exit
usage() {
    echo "Usage: $0 <kubernetes-version>"
    echo "Example: $0 1.28.3"
    exit 1
}

# Validate input
VERSION=${1#"v"}  # Strip leading 'v' if present
if [ -z "$VERSION" ]; then
    usage
fi

# Fetch Kubernetes modules from go.mod
echo "🔍 Discovering Kubernetes modules..."
MODULES=$(
    curl -sS "https://raw.githubusercontent.com/kubernetes/kubernetes/v${VERSION}/go.mod" |
    grep -E "k8s.io/.* => ./staging/src/k8s.io" |
    sed -E 's|.*k8s.io/([^ ]*) => ./staging/src/k8s.io/.*|k8s.io/\1|'
)

# Function to get module version
get_module_version() {
    local module="$1"
    go mod download -json "${module}@kubernetes-${VERSION}" |
    grep -o '"Version": "[^"]*' |
    cut -d'"' -f4
}

# Update modules
echo "🔄 Updating Kubernetes modules to version v${VERSION}..."
for MODULE in $MODULES; do
    echo "  Processing module: $MODULE"
    MODULE_VERSION=$(get_module_version "$MODULE")

    if [ -n "$MODULE_VERSION" ]; then
        go mod edit "-replace=${MODULE}=${MODULE}@${MODULE_VERSION}"
        echo "    ✅ Updated to ${MODULE_VERSION}"
    else
        echo "    ❌ Could not fetch version for $MODULE"
    fi
done

# Update Kubernetes dependency
echo "🚀 Finalizing Kubernetes version..."
go get "k8s.io/kubernetes@v${VERSION}"

echo "✨ Kubernetes module updates complete!"