Run vagrant rsync-auto as a daemon

0-vagrant-rsync-auto.sh

#!/usr/bin/env bash

set -euo pipefail

ROOT_PATH=$(set -e && cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
cd "${ROOT_PATH}"

# Taken from Symfony installer
function output 
{
    style_start=""
    style_end=""
    if [ "${2:-}" != "" ]; then
        case $2 in
            "success")
                style_start="\033[0;32m"
                style_end="\033[0m"
                ;;
            "error")
                style_start="\033[31;31m"
                style_end="\033[0m"
                ;;
            "info"|"warning")
                style_start="\033[33m"
                style_end="\033[39m"
                ;;
            "heading")
                style_start="\033[1;33m"
                style_end="\033[22;39m"
                ;;
        esac
    fi

    builtin echo -e "${style_start}${1}${style_end}"
}

function output_success 
{
    output "${1}" 'success'
}
function output_heading 
{
    output "${1}" 'heading'
}
function output_info 
{
    output "${1}" 'info'
}
function output_warning 
{
    output "${1}" 'warning'
}
function output_error 
{
    output "${1}" 'error'
}

function kill_children
{
    local children
    children="$(pgrep -P "$1" || true)"

    if [[ -z ${children} ]]; then
        return
    fi

    local pid
    for pid in ${children}; do
        kill_children "${pid}"
        kill -TERM "${pid}" || true
    done
}

function kill_vagrant_auto_if_exists
{
    if [ ! -f vagrant-rsync-auto.pid ]; then
        return
    fi

    if ! pgrep -F vagrant-rsync-auto.pid >> /dev/null; then
        output_info 'vagrant rsync-auto is already stopped'
        return
    fi

    local pid
    pid="$(cat vagrant-rsync-auto.pid)"

    kill_children "${pid}"
    kill -TERM "${pid}"

    output_success 'vagrant rsync-auto stopped'
}

function start_vagrant_auto
{
    if test -f vagrant-rsync-auto.pid && pgrep -F vagrant-rsync-auto.pid >> /dev/null; then
        output_info 'vagrant rsync-auto is already started'
        return
    fi

    nohup vagrant rsync-auto >vagrant-rsync-auto.log 2>vagrant-rsync-auto.err.log &
    echo $! > vagrant-rsync-auto.pid
    output_success 'vagrant rsync-auto started'
}

case "${1:-}" in
    restart)
        kill_vagrant_auto_if_exists
        start_vagrant_auto
        ;;

    start)
        start_vagrant_auto
        ;;

    stop)
        kill_vagrant_auto_if_exists
        ;;

    *)
        output_info "Usage: ${0} {restart|start|stop}"
        exit 1
        ;;
esac

README.md

Use case

Start vagrant rsync-auto automatically when starting a development environment.

Usage

vagrant-rsync-auto.sh {restart|start|stop}

Debug

• File vagrant-rsync-auto.log records stdout
• File vagrant-rsync-auto.err.log records stderr

Behavior

• File vagrant-rsync-auto.pid keeps track of the current vagrant rsync-auto process