mirror of
https://github.com/ChuckBuilds/LEDMatrix.git
synced 2026-04-11 21:33:00 +00:00
57aa7d101b
Fix crash when df produces unexpected output that results in empty
AVAILABLE_SPACE variable, causing 'integer expression expected' error.
Problem:
- df may produce unexpected output format (different locale, unusual
filesystem name spanning lines, or non-standard df implementation)
- While '|| echo "0"' handles pipeline failures, it doesn't trigger if
awk succeeds but produces no output (empty string)
- When AVAILABLE_SPACE is empty, comparison [ "$AVAILABLE_SPACE" -lt 500 ]
fails with 'integer expression expected' error
- With set -e, this causes script to exit unexpectedly
Solution:
- Add AVAILABLE_SPACE=${AVAILABLE_SPACE:-0} before comparison to ensure
variable always has a numeric value (defaults to 0 if empty)
- This gracefully handles edge cases where df/awk produces unexpected output
383 lines
12 KiB
Bash
Executable File
383 lines
12 KiB
Bash
Executable File
#!/bin/bash
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# LED Matrix One-Shot Installation Script
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# This script provides a single-command installation experience
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# Usage: curl -fsSL https://raw.githubusercontent.com/ChuckBuilds/LEDMatrix/main/scripts/install/one-shot-install.sh | bash
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set -Eeuo pipefail
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# Global state for error tracking
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CURRENT_STEP="initialization"
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# Color codes for output
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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# Error handler for explicit failures
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on_error() {
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local exit_code=$?
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local line_no=${1:-unknown}
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echo "" >&2
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echo -e "${RED}✗ ERROR: Installation failed at step: $CURRENT_STEP${NC}" >&2
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echo -e "${RED} Line: $line_no, Exit code: $exit_code${NC}" >&2
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echo "" >&2
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echo "Common fixes:" >&2
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echo " - Check internet connectivity: ping -c1 8.8.8.8" >&2
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echo " - Verify sudo access: sudo -v" >&2
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echo " - Check disk space: df -h /" >&2
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echo " - If APT lock error: sudo dpkg --configure -a" >&2
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echo " - Wait a few minutes and try again" >&2
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echo "" >&2
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echo "This script is safe to run multiple times. You can re-run it to continue." >&2
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exit "$exit_code"
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}
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trap 'on_error $LINENO' ERR
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# Helper functions for colored output
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print_step() {
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echo ""
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echo -e "${BLUE}==========================================${NC}"
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echo -e "${BLUE}$1${NC}"
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echo -e "${BLUE}==========================================${NC}"
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echo ""
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}
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print_success() {
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echo -e "${GREEN}✓${NC} $1"
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}
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print_warning() {
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echo -e "${YELLOW}⚠${NC} $1"
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}
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print_error() {
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echo -e "${RED}✗${NC} $1"
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}
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# Retry function for network operations
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retry() {
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local attempt=1
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local max_attempts=3
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local delay_seconds=5
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while true; do
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if "$@"; then
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return 0
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fi
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local status=$?
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if [ $attempt -ge $max_attempts ]; then
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print_error "Command failed after $attempt attempts: $*"
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return $status
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fi
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print_warning "Command failed (attempt $attempt/$max_attempts). Retrying in ${delay_seconds}s: $*"
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attempt=$((attempt+1))
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sleep "$delay_seconds"
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done
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}
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# Check network connectivity
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check_network() {
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CURRENT_STEP="Network connectivity check"
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print_step "Checking network connectivity..."
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if command -v ping >/dev/null 2>&1; then
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if ping -c 1 -W 3 8.8.8.8 >/dev/null 2>&1; then
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print_success "Internet connectivity confirmed (ping test)"
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return 0
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fi
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fi
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if command -v curl >/dev/null 2>&1; then
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if curl -Is --max-time 5 http://deb.debian.org >/dev/null 2>&1; then
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print_success "Internet connectivity confirmed (curl test)"
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return 0
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fi
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fi
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if command -v wget >/dev/null 2>&1; then
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if wget --spider --timeout=5 http://deb.debian.org >/dev/null 2>&1; then
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print_success "Internet connectivity confirmed (wget test)"
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return 0
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fi
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fi
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print_error "No internet connectivity detected"
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echo ""
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echo "Please ensure your Raspberry Pi is connected to the internet:"
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echo " 1. Check WiFi/Ethernet connection"
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echo " 2. Test manually: ping -c1 8.8.8.8"
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echo " 3. Then re-run this installation script"
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exit 1
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}
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# Check disk space
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check_disk_space() {
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CURRENT_STEP="Disk space check"
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if ! command -v df >/dev/null 2>&1; then
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print_warning "df command not available, skipping disk space check"
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return 0
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fi
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# Check available space in MB
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AVAILABLE_SPACE=$(df -m / | awk 'NR==2{print $4}' || echo "0")
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# Ensure AVAILABLE_SPACE has a default value if empty (handles unexpected df output)
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AVAILABLE_SPACE=${AVAILABLE_SPACE:-0}
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if [ "$AVAILABLE_SPACE" -lt 500 ]; then
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print_error "Insufficient disk space: ${AVAILABLE_SPACE}MB available (need at least 500MB)"
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echo ""
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echo "Please free up disk space before continuing:"
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echo " - Remove unnecessary packages: sudo apt autoremove"
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echo " - Clean APT cache: sudo apt clean"
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echo " - Check large files: sudo du -sh /* | sort -h"
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exit 1
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elif [ "$AVAILABLE_SPACE" -lt 1024 ]; then
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print_warning "Limited disk space: ${AVAILABLE_SPACE}MB available (recommend at least 1GB)"
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else
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print_success "Disk space sufficient: ${AVAILABLE_SPACE}MB available"
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fi
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}
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# Check for curl or wget, install if missing
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ensure_download_tool() {
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CURRENT_STEP="Download tool check"
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if command -v curl >/dev/null 2>&1; then
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print_success "curl is available"
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return 0
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fi
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if command -v wget >/dev/null 2>&1; then
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print_success "wget is available"
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return 0
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fi
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print_warning "Neither curl nor wget found, installing curl..."
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# Try to install curl (may fail if not sudo, but we'll check sudo next)
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if command -v apt-get >/dev/null 2>&1; then
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print_step "Installing curl..."
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if [ "$EUID" -eq 0 ]; then
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retry apt-get update
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retry apt-get install -y curl
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print_success "curl installed successfully"
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else
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print_error "Need sudo to install curl. Please run: sudo apt-get update && sudo apt-get install -y curl"
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echo "Then re-run this installation script."
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exit 1
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fi
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else
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print_error "Cannot install curl: apt-get not available"
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exit 1
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fi
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}
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# Check and elevate to sudo if needed
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check_sudo() {
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CURRENT_STEP="Privilege check"
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if [ "$EUID" -eq 0 ]; then
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print_success "Running with root privileges"
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return 0
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fi
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print_warning "Script needs administrator privileges"
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# Check if sudo is available
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if ! command -v sudo >/dev/null 2>&1; then
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print_error "sudo is not available and script is not running as root"
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echo ""
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echo "Please either:"
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echo " 1. Run as root: sudo bash -c \"\$(curl -fsSL https://raw.githubusercontent.com/ChuckBuilds/LEDMatrix/main/scripts/install/one-shot-install.sh)\""
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echo " 2. Or install sudo first"
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exit 1
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fi
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# Test sudo access
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if ! sudo -n true 2>/dev/null; then
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print_warning "Need sudo password - you may be prompted"
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if ! sudo -v; then
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print_error "Failed to obtain sudo privileges"
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exit 1
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fi
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fi
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print_success "Sudo access confirmed"
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}
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# Check if running on Raspberry Pi (warning only, don't fail)
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check_raspberry_pi() {
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CURRENT_STEP="Hardware check"
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if [ -r /proc/device-tree/model ]; then
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DEVICE_MODEL=$(tr -d '\0' </proc/device-tree/model)
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if [[ "$DEVICE_MODEL" == *"Raspberry Pi"* ]]; then
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print_success "Detected Raspberry Pi: $DEVICE_MODEL"
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else
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print_warning "Not running on Raspberry Pi hardware: $DEVICE_MODEL"
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print_warning "LED matrix functionality requires Raspberry Pi hardware"
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fi
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else
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print_warning "Could not detect device model (continuing anyway)"
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fi
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}
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# Main installation function
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main() {
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print_step "LED Matrix One-Shot Installation"
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echo "This script will:"
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echo " 1. Check system prerequisites"
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echo " 2. Install required system packages"
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echo " 3. Clone or update the LEDMatrix repository"
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echo " 4. Run the full installation script"
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echo ""
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# Prerequisites checks
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check_network
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check_disk_space
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check_raspberry_pi
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ensure_download_tool
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check_sudo
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# Install system prerequisites
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CURRENT_STEP="System package installation"
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print_step "Installing system prerequisites..."
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# Update package list
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print_success "Updating package list..."
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if [ "$EUID" -eq 0 ]; then
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retry apt-get update
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else
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retry sudo apt-get update
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fi
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# Install required packages
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PACKAGES=(
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"git"
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"python3-pip"
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"cython3"
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"build-essential"
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"python3-dev"
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"python3-pillow"
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"scons"
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)
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print_success "Installing required packages..."
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for pkg in "${PACKAGES[@]}"; do
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print_success "Installing $pkg..."
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if [ "$EUID" -eq 0 ]; then
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retry apt-get install -y "$pkg"
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else
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retry sudo apt-get install -y "$pkg"
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fi
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done
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# Repository cloning/updating
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CURRENT_STEP="Repository setup"
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print_step "Setting up LEDMatrix repository..."
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REPO_DIR="$HOME/LEDMatrix"
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REPO_URL="https://github.com/ChuckBuilds/LEDMatrix.git"
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if [ -d "$REPO_DIR" ]; then
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print_warning "Directory $REPO_DIR already exists"
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# Check if it's a valid git repository
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if [ -d "$REPO_DIR/.git" ]; then
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print_success "Valid git repository found, updating..."
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cd "$REPO_DIR"
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# Check if we can pull (may fail if there are local changes)
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if git fetch >/dev/null 2>&1 && git status >/dev/null 2>&1; then
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# Check for local modifications
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if [ -z "$(git status --porcelain)" ]; then
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print_success "Pulling latest changes..."
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retry git pull || print_warning "Could not pull latest changes (continuing with existing code)"
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else
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print_warning "Repository has local modifications, skipping pull"
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print_warning "Using existing repository state"
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fi
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else
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print_warning "Git repository appears corrupted or has issues"
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print_warning "Attempting to re-clone..."
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cd "$HOME"
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rm -rf "$REPO_DIR"
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print_success "Cloning fresh repository..."
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retry git clone "$REPO_URL" "$REPO_DIR"
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fi
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else
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print_warning "Directory exists but is not a git repository"
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print_warning "Removing and cloning fresh..."
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cd "$HOME"
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rm -rf "$REPO_DIR"
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print_success "Cloning repository..."
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retry git clone "$REPO_URL" "$REPO_DIR"
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fi
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else
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print_success "Cloning repository to $REPO_DIR..."
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retry git clone "$REPO_URL" "$REPO_DIR"
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fi
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# Verify repository is accessible
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if [ ! -d "$REPO_DIR" ] || [ ! -f "$REPO_DIR/first_time_install.sh" ]; then
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print_error "Repository setup failed: $REPO_DIR/first_time_install.sh not found"
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exit 1
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fi
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print_success "Repository ready at $REPO_DIR"
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# Execute main installation script
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CURRENT_STEP="Main installation"
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print_step "Running main installation script..."
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cd "$REPO_DIR"
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# Make sure the script is executable
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chmod +x first_time_install.sh
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# Check if script exists
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if [ ! -f "first_time_install.sh" ]; then
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print_error "first_time_install.sh not found in $REPO_DIR"
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exit 1
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fi
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print_success "Starting main installation (this may take 10-30 minutes)..."
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echo ""
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# Execute with proper error handling
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# Temporarily disable errexit to capture exit code instead of exiting immediately
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set +e
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# Use sudo if we're not root, otherwise run directly
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if [ "$EUID" -eq 0 ]; then
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bash ./first_time_install.sh
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else
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sudo bash ./first_time_install.sh
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fi
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INSTALL_EXIT_CODE=$?
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set -e # Re-enable errexit
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if [ $INSTALL_EXIT_CODE -eq 0 ]; then
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echo ""
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print_step "Installation Complete!"
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print_success "LED Matrix has been successfully installed!"
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echo ""
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echo "Next steps:"
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echo " 1. Configure your settings: sudo nano $REPO_DIR/config/config.json"
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echo " 2. Or use the web interface: http://$(hostname -I | awk '{print $1}'):5000"
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echo " 3. Start the service: sudo systemctl start ledmatrix.service"
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echo ""
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else
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print_error "Main installation script exited with code $INSTALL_EXIT_CODE"
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echo ""
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echo "The installation may have partially completed."
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echo "You can:"
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echo " 1. Re-run this script to continue (it's safe to run multiple times)"
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echo " 2. Check logs in $REPO_DIR/logs/"
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echo " 3. Review the error messages above"
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exit $INSTALL_EXIT_CODE
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fi
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}
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# Run main function
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main "$@"
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