Add initial QVM CLI, Nix flake, scripts and README
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Joshua Bell
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228
bin/qvm-status
Executable file
228
bin/qvm-status
Executable file
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#!/usr/bin/env bash
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#
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# qvm-status - Display VM state, configuration, and connection information
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#
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# Shows current VM status including:
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# - Running state (PID, uptime, SSH port)
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# - Mounted workspaces from workspaces.json
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# - Cache directory status
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# - Base image and overlay details
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# - Connection hints for SSH and run commands
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#
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# Exit codes:
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# 0 - VM is running
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# 1 - VM is stopped
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set -euo pipefail
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# Source common library for shared functions and constants
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readonly QVM_LIB_DIR="${QVM_LIB_DIR:-$(dirname "$0")/../lib}"
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source "${QVM_LIB_DIR}/common.sh"
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# Additional color codes for status display
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if [[ -t 1 ]]; then
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readonly COLOR_SUCCESS='\033[0;32m' # Green
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readonly COLOR_HEADER='\033[1;37m' # Bold White
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readonly COLOR_DIM='\033[0;90m' # Dim Gray
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else
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readonly COLOR_SUCCESS=''
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readonly COLOR_HEADER=''
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readonly COLOR_DIM=''
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fi
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#
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# format_bytes - Convert bytes to human-readable format
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# Args: $1 - size in bytes
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# Returns: formatted string (e.g., "1.5G", "256M", "4.0K")
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#
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format_bytes() {
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local bytes="$1"
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if (( bytes >= 1073741824 )); then
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printf "%.1fG" "$(echo "scale=1; $bytes / 1073741824" | bc)"
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elif (( bytes >= 1048576 )); then
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printf "%.1fM" "$(echo "scale=1; $bytes / 1048576" | bc)"
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elif (( bytes >= 1024 )); then
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printf "%.1fK" "$(echo "scale=1; $bytes / 1024" | bc)"
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else
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printf "%dB" "$bytes"
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fi
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}
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#
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# get_uptime - Calculate VM uptime from PID
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# Args: $1 - process PID
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# Returns: uptime string (e.g., "2h 15m", "45m", "30s")
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#
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get_uptime() {
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local pid="$1"
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# Get process start time in seconds since epoch
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local start_time
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start_time=$(ps -p "$pid" -o lstart= 2>/dev/null | xargs -I{} date -d "{}" +%s)
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if [[ -z "$start_time" ]]; then
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echo "unknown"
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return
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fi
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local current_time
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current_time=$(date +%s)
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local uptime_seconds=$((current_time - start_time))
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# Format uptime
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local hours=$((uptime_seconds / 3600))
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local minutes=$(( (uptime_seconds % 3600) / 60 ))
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local seconds=$((uptime_seconds % 60))
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if (( hours > 0 )); then
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printf "%dh %dm" "$hours" "$minutes"
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elif (( minutes > 0 )); then
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printf "%dm %ds" "$minutes" "$seconds"
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else
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printf "%ds" "$seconds"
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fi
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}
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#
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# show_file_info - Display file status with size and modification time
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# Args: $1 - file path
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# $2 - label (e.g., "Base Image")
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#
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show_file_info() {
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local file="$1"
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local label="$2"
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if [[ -f "$file" ]]; then
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local size_bytes
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size_bytes=$(stat -c %s "$file" 2>/dev/null || echo "0")
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local size_human
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size_human=$(format_bytes "$size_bytes")
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local mod_time
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mod_time=$(stat -c %y "$file" 2>/dev/null | cut -d. -f1)
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echo -e " ${COLOR_SUCCESS}✓${COLOR_RESET} $label: ${COLOR_INFO}$size_human${COLOR_RESET} ${COLOR_DIM}(modified: $mod_time)${COLOR_RESET}"
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else
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echo -e " ${COLOR_WARN}✗${COLOR_RESET} $label: ${COLOR_WARN}missing${COLOR_RESET}"
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fi
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}
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#
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# show_dir_info - Display directory status
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# Args: $1 - directory path
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# $2 - label (e.g., "Cargo Home")
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#
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show_dir_info() {
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local dir="$1"
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local label="$2"
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if [[ -d "$dir" ]]; then
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echo -e " ${COLOR_SUCCESS}✓${COLOR_RESET} $label: ${COLOR_DIM}$dir${COLOR_RESET}"
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else
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echo -e " ${COLOR_WARN}✗${COLOR_RESET} $label: ${COLOR_WARN}not created${COLOR_RESET}"
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fi
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}
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#
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# show_workspaces - Display mounted workspaces from workspaces.json
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#
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show_workspaces() {
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if [[ ! -f "$QVM_WORKSPACES_FILE" ]]; then
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echo -e " ${COLOR_DIM}No workspaces mounted${COLOR_RESET}"
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return
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fi
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# Check if file is valid JSON and has workspaces
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local workspace_count
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workspace_count=$(jq 'length' "$QVM_WORKSPACES_FILE" 2>/dev/null || echo "0")
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if (( workspace_count == 0 )); then
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echo -e " ${COLOR_DIM}No workspaces mounted${COLOR_RESET}"
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return
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fi
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# Parse and display each workspace
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jq -r 'to_entries[] | "\(.key)|\(.value.host_path)|\(.value.guest_path)"' "$QVM_WORKSPACES_FILE" 2>/dev/null | while IFS='|' read -r hash host_path guest_path; do
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echo -e " ${COLOR_SUCCESS}✓${COLOR_RESET} $hash: ${COLOR_INFO}$host_path${COLOR_RESET} → ${COLOR_DIM}$guest_path${COLOR_RESET}"
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done
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}
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#
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# main - Main status display logic
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#
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main() {
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# Header
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echo -e "${COLOR_HEADER}QVM Status${COLOR_RESET}"
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echo ""
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# VM State
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echo -e "${COLOR_HEADER}VM State:${COLOR_RESET}"
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if is_vm_running; then
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local pid
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pid=$(cat "$QVM_PID_FILE")
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local ssh_port
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if [[ -f "$QVM_SSH_PORT_FILE" ]]; then
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ssh_port=$(cat "$QVM_SSH_PORT_FILE")
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else
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ssh_port="unknown"
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fi
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local uptime
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uptime=$(get_uptime "$pid")
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echo -e " ${COLOR_SUCCESS}✓${COLOR_RESET} Running"
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echo -e " ${COLOR_DIM}PID:${COLOR_RESET} $pid"
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echo -e " ${COLOR_DIM}SSH:${COLOR_RESET} localhost:$ssh_port"
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echo -e " ${COLOR_DIM}Uptime:${COLOR_RESET} $uptime"
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else
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echo -e " ${COLOR_WARN}✗${COLOR_RESET} Stopped"
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fi
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echo ""
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# Workspaces
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echo -e "${COLOR_HEADER}Mounted Workspaces:${COLOR_RESET}"
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show_workspaces
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echo ""
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# Cache Directories
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echo -e "${COLOR_HEADER}Cache Directories:${COLOR_RESET}"
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show_dir_info "$QVM_CARGO_HOME" "Cargo Home"
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show_dir_info "$QVM_CARGO_TARGET" "Cargo Target"
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show_dir_info "$QVM_PNPM_STORE" "PNPM Store"
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show_dir_info "$QVM_SCCACHE" "SCCache"
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echo ""
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# VM Images
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echo -e "${COLOR_HEADER}VM Images:${COLOR_RESET}"
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show_file_info "$QVM_BASE_IMAGE" "Base Image"
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show_file_info "$QVM_OVERLAY" "Overlay"
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echo ""
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# Connection Hints (only if VM is running)
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if is_vm_running; then
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local ssh_port
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ssh_port=$(cat "$QVM_SSH_PORT_FILE" 2>/dev/null || echo "unknown")
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echo -e "${COLOR_HEADER}Connection:${COLOR_RESET}"
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echo -e " ${COLOR_INFO}SSH:${COLOR_RESET} qvm ssh"
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echo -e " ${COLOR_INFO}Run cmd:${COLOR_RESET} qvm run <command>"
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echo -e " ${COLOR_INFO}Direct:${COLOR_RESET} ssh -p $ssh_port root@localhost"
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echo ""
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# Exit success if running
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exit 0
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else
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echo -e "${COLOR_HEADER}Quick Start:${COLOR_RESET}"
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echo -e " ${COLOR_INFO}Start VM:${COLOR_RESET} qvm start"
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echo ""
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# Exit failure if stopped
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exit 1
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fi
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}
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# Execute main
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main "$@"
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