Container debugging

gistfile1.txt

#!/bin/bash
# =============================================================================
# setup-container-debugging.sh
# =============================================================================
# Sets up .NET remote debugging tools (vsdbg) and devtunnel in containers 
# for dev environments.
#
# Usage:
#   ./setup-container-debugging.sh [--help]
#
# DO NOT USE IN PRODUCTION - This installs debug tools that should only exist
# in development environments.
# =============================================================================

set -e

# Configuration
VSDBG_INSTALL_PATH="/vsdbg"
DEVTUNNEL_INSTALL_PATH="/usr/local/bin/devtunnel"

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

print_info() {
    echo -e "${GREEN}[INFO]${NC} $1"
}

print_warn() {
    echo -e "${YELLOW}[WARN]${NC} $1"
}

print_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

show_help() {
    cat << EOF
Usage: $(basename "$0") [OPTIONS]

Sets up .NET remote debugging tools (vsdbg and devtunnel) in a container.

Options:
  --help              Show this help message

Installs:
  - vsdbg at: $VSDBG_INSTALL_PATH/vsdbg
  - devtunnel at: $DEVTUNNEL_INSTALL_PATH

After setup, authenticate devtunnel with:
  devtunnel user login --github
EOF
    exit 0
}

# Parse arguments
while [[ $# -gt 0 ]]; do
    case $1 in
        --help)
            show_help
            ;;
        *)
            print_error "Unknown option: $1"
            show_help
            ;;
    esac
done

# Detect package manager
detect_package_manager() {
    if command -v tdnf &> /dev/null; then
        echo "tdnf"
    elif command -v apt-get &> /dev/null; then
        echo "apt"
    else
        print_error "No supported package manager found (tdnf or apt-get)"
        exit 1
    fi
}

# Install dependencies based on package manager
install_dependencies() {
    local pkg_manager=$1
    print_info "Installing dependencies using $pkg_manager..."

    if [ "$pkg_manager" = "tdnf" ]; then
        tdnf install -y curl procps-ng socat gawk grep sed findutils tar gzip unzip 2>/dev/null || true
    else
        apt-get update -qq
        apt-get install -y -qq curl procps socat gawk grep sed findutils tar gzip unzip net-tools 2>/dev/null || true
    fi
}

# Install vsdbg debugger
install_vsdbg() {
    if [ -f "$VSDBG_INSTALL_PATH/vsdbg" ]; then
        print_info "vsdbg already installed at $VSDBG_INSTALL_PATH"
        return 0
    fi

    print_info "Installing vsdbg debugger..."
    
    # Use the official installer script
    curl -sSL https://aka.ms/getvsdbgsh | bash /dev/stdin -v latest -l "$VSDBG_INSTALL_PATH"

    if [ -f "$VSDBG_INSTALL_PATH/vsdbg" ]; then
        print_info "vsdbg installed successfully at $VSDBG_INSTALL_PATH"
    else
        print_error "Failed to install vsdbg"
        exit 1
    fi
}

# Install devtunnel CLI (optional, for AKS without kubectl)
install_devtunnel() {
    if [ -f "$DEVTUNNEL_INSTALL_PATH" ]; then
        if file "$DEVTUNNEL_INSTALL_PATH" | grep -q "executable\|ELF"; then
            print_info "devtunnel already installed at $DEVTUNNEL_INSTALL_PATH"
            return 0
        else
            print_warn "Existing devtunnel appears corrupt, reinstalling..."
            rm -f "$DEVTUNNEL_INSTALL_PATH"
        fi
    fi

    print_info "Installing devtunnel CLI..."
    
    curl -sL https://aka.ms/TunnelsCliDownload/linux-x64 -o /tmp/devtunnel
    
    if file /tmp/devtunnel | grep -q "executable\|ELF"; then
        chmod +x /tmp/devtunnel
        mv /tmp/devtunnel "$DEVTUNNEL_INSTALL_PATH"
        print_info "devtunnel installed successfully"
    else
        print_error "Failed to download devtunnel binary"
        rm -f /tmp/devtunnel
        exit 1
    fi
}

# Print summary
print_summary() {
    echo ""
    echo "=============================================="
    echo "  Container Debug Setup Complete"
    echo "=============================================="
    echo ""
    echo "  vsdbg:     $VSDBG_INSTALL_PATH/vsdbg"
    echo "  devtunnel: $DEVTUNNEL_INSTALL_PATH"
    echo ""
    echo "  Next steps:"
    echo ""
    echo "  1. Authenticate devtunnel with GitHub:"
    echo "       devtunnel user login --github"
    echo "       (Enter code at github.com/login/device)"
    echo ""
    echo "  2. Connect to your dev machine's tunnel:"
    echo "       devtunnel connect <tunnel-id>"
    echo ""
    echo "  3. Start vsdbg on TCP port 4024 using socat:"
    echo "       socat TCP-LISTEN:4024,reuseaddr,fork EXEC:'/vsdbg/vsdbg --interpreter=vscode'"
    echo ""
    echo "  4. In VS Code on dev machine, use 'Attach via DevTunnel' config"
    echo ""
    echo "  To find the dotnet process ID:"
    echo "    ps aux | grep dotnet"
    echo ""
}

# Main
main() {
    echo "=============================================="
    echo "  Container Debug Setup"
    echo "=============================================="
    echo ""

    # Detect and install
    local pkg_manager
    pkg_manager=$(detect_package_manager)
    print_info "Detected package manager: $pkg_manager"

    install_dependencies "$pkg_manager"
    install_vsdbg
    install_devtunnel

    print_summary
}

main