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Copy pathrlgl.sh
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executable file
·308 lines (258 loc) · 9.96 KB
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#!/bin/bash
# Colors
GREEN='\033[0;32m'
RED='\033[0;31m'
YELLOW='\033[1;33m'
NC='\033[0m' # reset
# Function to show usage
show_usage() {
echo "Usage: $0 [OPTIONS]"
echo "Options:"
echo " -c, --config FILE Specify config file (default: config.yaml)"
echo " -h, --help Show this help message"
echo ""
echo "Example: $0 -c /path/to/custom-config.yaml"
}
# Parse command line arguments
CONFIG_FILE_ARG=""
while [[ $# -gt 0 ]]; do
case $1 in
-c|--config)
CONFIG_FILE_ARG="$2"
shift 2
;;
-h|--help)
show_usage
exit 0
;;
*)
echo "Unknown option: $1"
show_usage
exit 1
;;
esac
done
# Get the script directory
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
# Set config file path
if [[ -n "$CONFIG_FILE_ARG" ]]; then
# Use absolute path if provided, or relative to current directory
if [[ "$CONFIG_FILE_ARG" = /* ]]; then
CONFIG_FILE="$CONFIG_FILE_ARG"
else
CONFIG_FILE="$(pwd)/$CONFIG_FILE_ARG"
fi
else
# Use default config file in script directory
CONFIG_FILE="$SCRIPT_DIR/config.yaml"
fi
# Check if config file exists
if [ ! -f "$CONFIG_FILE" ]; then
echo "Error: Config file not found at $CONFIG_FILE"
exit 1
fi
echo "Using config file: $CONFIG_FILE"
sleep 2 # Brief pause to show the config file being used
start_time=$(date +%s%3N) # milliseconds since epoch
config_reload_count=0
# Variables to track previous state to avoid unnecessary redraws
previous_complete_display=""
# Variables for polling intervals
declare -ga section_check_poll_intervals=()
declare -ga check_last_run_times=()
declare -ga check_last_results=() # Cache results between polling intervals
# Get initial config file modification time
get_config_mtime() {
if [[ -f "$CONFIG_FILE" ]]; then
stat -c %Y "$CONFIG_FILE" 2>/dev/null || stat -f %m "$CONFIG_FILE" 2>/dev/null
else
echo "0"
fi
}
config_mtime=$(get_config_mtime)
# Cleanup function
cleanup() {
clear
tput cnorm
exit
}
trap cleanup INT # cleanup on Ctrl+C
tput civis # hide cursor
# Parse configuration file
parse_config() {
# Initialize arrays for sections
declare -ga section_titles=()
declare -ga section_check_names=()
declare -ga section_check_commands=()
section_check_poll_intervals=()
check_last_run_times=()
# Parse global poll_interval if exists
global_poll_interval=$(grep "^[[:space:]]*poll_interval:" "$1" | head -1 | sed 's/.*poll_interval:[[:space:]]*\([0-9.]*\).*/\1/')
if [[ -z "$global_poll_interval" || ! "$global_poll_interval" =~ ^[0-9]+\.?[0-9]*$ ]]; then
global_poll_interval=0.5 # default fallback
fi
# Get section starting lines (lines with "- title:")
section_lines=$(grep -n "^[[:space:]]*-[[:space:]]*title:" "$1" | cut -d':' -f1)
for section_line in $section_lines; do
# Extract title
title=$(sed -n "${section_line}s/.*title:[[:space:]]*\"*\([^\"]*\)\"*.*/\1/p" "$1")
section_titles+=("$title")
# Find checks for this section
section_names=()
section_commands=()
section_intervals=()
# Find the next section start or end of file
next_section_line=$(echo "$section_lines" | awk -v current="$section_line" '$1 > current {print $1; exit}')
if [[ -z "$next_section_line" ]]; then
next_section_line=$(wc -l < "$1")
((next_section_line++))
fi
# Find check entries between this section and the next
check_lines=$(sed -n "${section_line},${next_section_line}p" "$1" | grep -n "^[[:space:]]*-[[:space:]]*name:" | cut -d':' -f1)
for relative_line in $check_lines; do
absolute_line=$((section_line + relative_line - 1))
name=$(sed -n "${absolute_line}s/.*name:[[:space:]]*\"*\([^\"]*\)\"*.*/\1/p" "$1")
# Look for command line in the next few lines
cmd_line=$((absolute_line + 1))
command=$(sed -n "${cmd_line}s/.*command:[[:space:]]*\"*\([^\"]*\)\"*.*/\1/p" "$1")
# Look for poll_interval in the next few lines after name
poll_interval=""
for ((offset=1; offset<=3; offset++)); do
check_line=$((absolute_line + offset))
if [[ $check_line -lt $next_section_line ]]; then
interval_line=$(sed -n "${check_line}p" "$1")
if [[ "$interval_line" =~ poll_interval:[[:space:]]*([0-9.]+) ]]; then
poll_interval="${BASH_REMATCH[1]}"
break
fi
fi
done
# Use global interval if no specific interval found
if [[ -z "$poll_interval" ]]; then
poll_interval="$global_poll_interval"
fi
if [[ -n "$name" && -n "$command" ]]; then
section_names+=("$name")
section_commands+=("$command")
section_intervals+=("$poll_interval")
check_last_run_times+=(0) # Initialize last run time
check_last_results+=(1) # Initialize with failure state
fi
done
# Store arrays as strings (bash limitation workaround)
section_check_names+=("$(printf "%s\n" "${section_names[@]}")")
section_check_commands+=("$(printf "%s\n" "${section_commands[@]}")")
section_check_poll_intervals+=("$(printf "%s\n" "${section_intervals[@]}")")
done
}
# Function to reload configuration
reload_config() {
parse_config "$CONFIG_FILE"
((config_reload_count++))
config_mtime=$(get_config_mtime)
# Reset previous state to force redraw
previous_complete_display=""
}
# Check if config file has been modified
check_config_changed() {
local current_mtime
current_mtime=$(get_config_mtime)
if [[ "$current_mtime" != "$config_mtime" ]]; then
reload_config
fi
}
# Load the configuration
parse_config "$CONFIG_FILE"
# Function to update complete display only if changed
update_complete_display() {
local new_complete_display="$1"
if [[ "$new_complete_display" != "$previous_complete_display" ]]; then
clear
echo -ne "$new_complete_display"
previous_complete_display="$new_complete_display"
fi
}
# Counter for config check frequency (check every 10 iterations = ~5 seconds)
config_check_counter=0
check_index=0 # Global check index counter
while true; do
# Check for config file changes every 10 iterations (every ~5 seconds)
if [[ $((config_check_counter % 10)) -eq 0 ]]; then
check_config_changed
fi
((config_check_counter++))
# Build complete display
display_content=""
check_index=0 # Reset check index for this iteration
# Process each section
for i in "${!section_titles[@]}"; do
# Add section title
title="${section_titles[i]}"
title_length=${#title}
box_width=$((title_length + 4)) # 2 spaces on each side
# Create top border
display_content+="┌"
for ((j=0; j<box_width; j++)); do
display_content+="─"
done
display_content+="┐\n"
# Create title line
display_content+="│ ${YELLOW}${title}${NC} │\n"
# Create bottom border
display_content+="└"
for ((j=0; j<box_width; j++)); do
display_content+="─"
done
display_content+="┘\n\n"
# Get checks for this section
IFS=$'\n' read -d '' -r -a names <<< "${section_check_names[i]}" || true
IFS=$'\n' read -d '' -r -a commands <<< "${section_check_commands[i]}" || true
IFS=$'\n' read -d '' -r -a intervals <<< "${section_check_poll_intervals[i]}" || true
# Process checks for this section
for j in "${!names[@]}"; do
if [[ -n "${names[j]}" && -n "${commands[j]}" ]]; then
current_time=$(date +%s%3N) # milliseconds
# Convert poll interval to milliseconds using bash arithmetic
poll_interval_ms=$(printf "%.0f" $(echo "${intervals[j]} * 1000" | awk '{print $1 * 1000}'))
# Initialize cached result if not exists
if [[ -z "${check_last_results[check_index]:-}" ]]; then
check_last_results[check_index]=1 # Default to failure
fi
# Check if enough time has passed since last run
time_since_last=$((current_time - ${check_last_run_times[check_index]}))
if [[ $time_since_last -ge $poll_interval_ms ]]; then
# Execute the command and cache the result
(cd "$SCRIPT_DIR" && bash -c "${commands[j]}")
result=$?
check_last_run_times[check_index]=$current_time
check_last_results[check_index]=$result
else
# Use cached result
result=${check_last_results[check_index]}
fi
if [[ $result -eq 0 ]]; then
display_content+="${GREEN}■ ${names[j]}${NC} (${intervals[j]}s)\n"
else
display_content+="${RED}■ ${names[j]}${NC} (${intervals[j]}s)\n"
fi
((check_index++))
fi
done
# Add spacing between sections
if [[ $i -lt $((${#section_titles[@]} - 1)) ]]; then
display_content+="\n"
fi
done
# Calculate elapsed time
now=$(date +%s%3N)
elapsed=$((now - start_time))
sec=$((elapsed / 1000))
min=$((sec / 60))
sec=$((sec % 60))
# Add timer and global interval info to the complete display
display_content+="\n\n${YELLOW}$(printf "%02d:%02d" "$min" "$sec")${NC} | Global: ${global_poll_interval}s\n"
# Update complete display at once
update_complete_display "${display_content}"
# Sleep before next update (use a shorter base interval for responsiveness)
sleep 0.1
done