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105 lines
3.6 KiB
Bash
105 lines
3.6 KiB
Bash
#!/bin/bash
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# Get the total or free amount of RAM+swap on the system
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#
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# [packagingv1]
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#
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# usage: ynh_get_ram [--free|--total] [--ignore_swap|--only_swap]
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# | arg: -f, --free - Count free RAM+swap
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# | arg: -t, --total - Count total RAM+swap
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# | arg: -s, --ignore_swap - Ignore swap, consider only real RAM
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# | arg: -o, --only_swap - Ignore real RAM, consider only swap
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# | ret: the amount of free ram, in MB (MegaBytes)
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#
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# Requires YunoHost version 3.8.1 or higher.
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ynh_get_ram() {
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# Declare an array to define the options of this helper.
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local legacy_args=ftso
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local -A args_array=([f]=free [t]=total [s]=ignore_swap [o]=only_swap)
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local free
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local total
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local ignore_swap
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local only_swap
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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ignore_swap=${ignore_swap:-0}
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only_swap=${only_swap:-0}
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free=${free:-0}
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total=${total:-0}
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if [ $free -eq $total ]; then
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ynh_print_warn --message="You have to choose --free or --total when using ynh_get_ram"
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ram=0
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# Use the total amount of ram
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elif [ $free -eq 1 ]; then
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local free_ram=$(LC_ALL=C vmstat --stats --unit M | grep "free memory" | awk '{print $1}')
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local free_swap=$(LC_ALL=C vmstat --stats --unit M | grep "free swap" | awk '{print $1}')
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local free_ram_swap=$((free_ram + free_swap))
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# Use the total amount of free ram
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local ram=$free_ram_swap
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if [ $ignore_swap -eq 1 ]; then
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# Use only the amount of free ram
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ram=$free_ram
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elif [ $only_swap -eq 1 ]; then
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# Use only the amount of free swap
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ram=$free_swap
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fi
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elif [ $total -eq 1 ]; then
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local total_ram=$(LC_ALL=C vmstat --stats --unit M | grep "total memory" | awk '{print $1}')
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local total_swap=$(LC_ALL=C vmstat --stats --unit M | grep "total swap" | awk '{print $1}')
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local total_ram_swap=$((total_ram + total_swap))
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local ram=$total_ram_swap
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if [ $ignore_swap -eq 1 ]; then
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# Use only the amount of free ram
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ram=$total_ram
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elif [ $only_swap -eq 1 ]; then
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# Use only the amount of free swap
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ram=$total_swap
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fi
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fi
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echo $ram
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}
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# Return 0 or 1 depending if the system has a given amount of RAM+swap free or total
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#
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# [packagingv1]
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#
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# usage: ynh_require_ram --required=RAM [--free|--total] [--ignore_swap|--only_swap]
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# | arg: -r, --required= - The amount to require, in MB
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# | arg: -f, --free - Count free RAM+swap
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# | arg: -t, --total - Count total RAM+swap
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# | arg: -s, --ignore_swap - Ignore swap, consider only real RAM
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# | arg: -o, --only_swap - Ignore real RAM, consider only swap
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# | ret: 1 if the ram is under the requirement, 0 otherwise.
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#
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# Requires YunoHost version 3.8.1 or higher.
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ynh_require_ram() {
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# Declare an array to define the options of this helper.
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local legacy_args=rftso
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local -A args_array=([r]=required= [f]=free [t]=total [s]=ignore_swap [o]=only_swap)
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local required
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local free
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local total
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local ignore_swap
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local only_swap
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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# Dunno if that's the right way to do, but that's some black magic to be able to
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# forward the bool args to ynh_get_ram easily?
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# If the variable $free is not empty, set it to '--free'
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free=${free:+--free}
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total=${total:+--total}
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ignore_swap=${ignore_swap:+--ignore_swap}
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only_swap=${only_swap:+--only_swap}
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local ram=$(ynh_get_ram $free $total $ignore_swap $only_swap)
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if [ $ram -lt $required ]; then
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return 1
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else
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return 0
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fi
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}
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