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Current File : /usr/libexec/netdata/plugins.d/charts.d.plugin
#!/usr/bin/env bash
# SPDX-License-Identifier: GPL-3.0-or-later
#
# charts.d.plugin allows easy development of BASH plugins
#
# if you need to run parallel charts.d processes, link this file to a different name
# in the same directory, with a .plugin suffix and netdata will start both of them,
# each will have a different config file and modules configuration directory.
#

export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/usr/sbin"

PROGRAM_FILE="$0"
MODULE_NAME="main"

# -----------------------------------------------------------------------------
# logging

PROGRAM_NAME="$(basename "${0}")"
SHORT_PROGRAM_NAME="${PROGRAM_NAME/.plugin/}"

# these should be the same with syslog() priorities
NDLP_EMERG=0   # system is unusable
NDLP_ALERT=1   # action must be taken immediately
NDLP_CRIT=2    # critical conditions
NDLP_ERR=3     # error conditions
NDLP_WARN=4    # warning conditions
NDLP_NOTICE=5  # normal but significant condition
NDLP_INFO=6    # informational
NDLP_DEBUG=7   # debug-level messages

# the max (numerically) log level we will log
LOG_LEVEL=$NDLP_INFO

set_log_min_priority() {
  case "${NETDATA_LOG_LEVEL,,}" in
    "emerg" | "emergency")
      LOG_LEVEL=$NDLP_EMERG
      ;;

    "alert")
      LOG_LEVEL=$NDLP_ALERT
      ;;

    "crit" | "critical")
      LOG_LEVEL=$NDLP_CRIT
      ;;

    "err" | "error")
      LOG_LEVEL=$NDLP_ERR
      ;;

    "warn" | "warning")
      LOG_LEVEL=$NDLP_WARN
      ;;

    "notice")
      LOG_LEVEL=$NDLP_NOTICE
      ;;

    "info")
      LOG_LEVEL=$NDLP_INFO
      ;;

    "debug")
      LOG_LEVEL=$NDLP_DEBUG
      ;;
  esac
}

set_log_min_priority

log() {
  local level="${1}"
  shift 1

  [[ -n "$level" && -n "$LOG_LEVEL" && "$level" -gt "$LOG_LEVEL" ]] && return

  systemd-cat-native --log-as-netdata <<EOFLOG
INVOCATION_ID=${NETDATA_INVOCATION_ID}
SYSLOG_IDENTIFIER=${PROGRAM_NAME}
PRIORITY=${level}
THREAD_TAG=charts.d.plugin
ND_LOG_SOURCE=collector
MESSAGE=${MODULE_NAME}: ${*//$'\n'/\\n}

EOFLOG
  # AN EMPTY LINE IS NEEDED ABOVE
}

info() {
  log "$NDLP_INFO" "${@}"
}

warning() {
  log "$NDLP_WARN" "${@}"
}

error() {
  log "$NDLP_ERR" "${@}"
}

fatal() {
  log "$NDLP_ALERT" "${@}"
	echo "DISABLE"
  exit 1
}

debug() {
  [ "$debug" = "1" ] && log "$NDLP_DEBUG" "${@}"
}

# -----------------------------------------------------------------------------
# check for BASH v4+ (required for associative arrays)

if [ ${BASH_VERSINFO[0]} -lt 4 ]; then
  echo >&2 "BASH version 4 or later is required (this is ${BASH_VERSION})."
  exit 1
fi

# -----------------------------------------------------------------------------
# create temp dir

debug=0
TMP_DIR=
chartsd_cleanup() {
	trap '' EXIT QUIT HUP INT TERM

	if [ ! -z "$TMP_DIR" -a -d "$TMP_DIR" ]; then
		[ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: cleaning up temporary directory $TMP_DIR ..."
		rm -rf "$TMP_DIR"
	fi
	echo "EXIT" 2>/dev/null
	exit 0
}
trap chartsd_cleanup EXIT QUIT HUP INT TERM

if [ $UID = "0" ]; then
	TMP_DIR="$(mktemp -d /var/run/netdata-${PROGRAM_NAME}-XXXXXXXXXX)"
else
	TMP_DIR="$(mktemp -d /tmp/.netdata-${PROGRAM_NAME}-XXXXXXXXXX)"
fi

logdate() {
	date "+%Y-%m-%d %H:%M:%S"
}

# -----------------------------------------------------------------------------
# check a few commands

require_cmd() {
	local x=$(which "${1}" 2>/dev/null || command -v "${1}" 2>/dev/null)
	if [ -z "${x}" -o ! -x "${x}" ]; then
		warning "command '${1}' is not found in ${PATH}."
		eval "${1^^}_CMD=\"\""
		return 1
	fi

	eval "${1^^}_CMD=\"${x}\""
	return 0
}

require_cmd date || exit 1
require_cmd sed || exit 1
require_cmd basename || exit 1
require_cmd dirname || exit 1
require_cmd cat || exit 1
require_cmd grep || exit 1
require_cmd egrep || exit 1
require_cmd mktemp || exit 1
require_cmd awk || exit 1
require_cmd timeout || exit 1
require_cmd curl || exit 1

# -----------------------------------------------------------------------------

[ $((BASH_VERSINFO[0])) -lt 4 ] && fatal "BASH version 4 or later is required, but found version: ${BASH_VERSION}. Please upgrade."

info "started from '$PROGRAM_FILE' with options: $*"

# -----------------------------------------------------------------------------
# internal defaults
# netdata exposes a few environment variables for us

[ -z "${NETDATA_PLUGINS_DIR}" ] && NETDATA_PLUGINS_DIR="$(dirname "${0}")"
[ -z "${NETDATA_USER_CONFIG_DIR}" ] && NETDATA_USER_CONFIG_DIR="/etc/netdata"
[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/lib/netdata/conf.d"

pluginsd="${NETDATA_PLUGINS_DIR}"
stockconfd="${NETDATA_STOCK_CONFIG_DIR}/${SHORT_PROGRAM_NAME}"
userconfd="${NETDATA_USER_CONFIG_DIR}/${SHORT_PROGRAM_NAME}"
olduserconfd="${NETDATA_USER_CONFIG_DIR}"
chartsd="$pluginsd/../charts.d"

minimum_update_frequency="${NETDATA_UPDATE_EVERY-1}"
update_every=${minimum_update_frequency} # this will be overwritten by the command line

# work around for non BASH shells
charts_create="_create"
charts_update="_update"
charts_check="_check"
charts_underscore="_"

# when making iterations, charts.d can loop more frequently
# to prevent plugins missing iterations.
# this is a percentage relative to update_every to align its
# iterations.
# The minimum is 10%, the maximum 100%.
# So, if update_every is 1 second and time_divisor is 50,
# charts.d will iterate every 500ms.
# Charts will be called to collect data only if the time
# passed since the last time the collected data is equal or
# above their update_every.
time_divisor=50

# number of seconds to run without restart
# after this time, charts.d.plugin will exit
# netdata will restart it
restart_timeout=$((3600 * 4))

# check if the charts.d plugins are using global variables
# they should not.
# It does not currently support BASH v4 arrays, so it is
# disabled
dryrunner=0

# check for timeout command
check_for_timeout=1

# the default enable/disable value for all charts
enable_all_charts="yes"

# -----------------------------------------------------------------------------
# parse parameters

check=0
chart_only=
while [ ! -z "$1" ]; do
	if [ "$1" = "check" ]; then
		check=1
		shift
		continue
	fi

	if [ "$1" = "debug" -o "$1" = "all" ]; then
		debug=1
		LOG_LEVEL=$NDLP_DEBUG
		shift
		continue
	fi

	if [ -f "$chartsd/$1.chart.sh" ]; then
		debug=1
		LOG_LEVEL=$NDLP_DEBUG
		chart_only="$(echo $1.chart.sh | sed "s/\.chart\.sh$//g")"
		shift
		continue
	fi

	if [ -f "$chartsd/$1" ]; then
		debug=1
		LOG_LEVEL=$NDLP_DEBUG
		chart_only="$(echo $1 | sed "s/\.chart\.sh$//g")"
		shift
		continue
	fi

	# number check
	n="$1"
	x=$((n))
	if [ "$x" = "$n" ]; then
		shift
		update_every=$x
		[ $update_every -lt $minimum_update_frequency ] && update_every=$minimum_update_frequency
		continue
	fi

	fatal "Cannot understand parameter $1. Aborting."
done

# -----------------------------------------------------------------------------
# loop control

# default sleep function
LOOPSLEEPMS_HIGHRES=0
now_ms=
current_time_ms_default() {
	now_ms="$(date +'%s')000"
}
current_time_ms="current_time_ms_default"
current_time_ms_accuracy=1
mysleep="sleep"

# if found and included, this file overwrites loopsleepms()
# and current_time_ms() with a high resolution timer function
# for precise looping.
source "$pluginsd/loopsleepms.sh.inc"
[ $? -ne 0 ] && error "Failed to load '$pluginsd/loopsleepms.sh.inc'."

# -----------------------------------------------------------------------------
# load my configuration

for myconfig in "${NETDATA_STOCK_CONFIG_DIR}/${SHORT_PROGRAM_NAME}.conf" "${NETDATA_USER_CONFIG_DIR}/${SHORT_PROGRAM_NAME}.conf"; do
	if [ -f "$myconfig" ]; then
		source "$myconfig"
		if [ $? -ne 0 ]; then
			error "Config file '$myconfig' loaded with errors."
		else
			info "Configuration file '$myconfig' loaded."
		fi
	else
		warning "Configuration file '$myconfig' not found."
	fi
done

# make sure time_divisor is right
time_divisor=$((time_divisor))
[ $time_divisor -lt 10 ] && time_divisor=10
[ $time_divisor -gt 100 ] && time_divisor=100

# we check for the timeout command, after we load our
# configuration, so that the user may overwrite the
# timeout command we use, providing a function that
# can emulate the timeout command we need:
# > timeout SECONDS command ...
if [ $check_for_timeout -eq 1 ]; then
	require_cmd timeout || exit 1
fi

# -----------------------------------------------------------------------------
# internal checks

# netdata passes the requested update frequency as the first argument
update_every=$((update_every + 1 - 1))     # makes sure it is a number
test $update_every -eq 0 && update_every=1 # if it is zero, make it 1

# check the charts.d directory
[ ! -d "$chartsd" ] && fatal "cannot find charts directory '$chartsd'"

# -----------------------------------------------------------------------------
# library functions

fixid() {
	echo "$*" |
		tr -c "[A-Z][a-z][0-9]" "_" |
		sed -e "s|^_\+||g" -e "s|_\+$||g" -e "s|_\+|_|g" |
		tr "[A-Z]" "[a-z]"
}

isvarset() {
  [ -n "$1" ] && [ "$1" != "unknown" ] && [ "$1" != "none" ]
  return $?
}

getosid() {
  if isvarset "${NETDATA_CONTAINER_OS_ID}"; then
    echo "${NETDATA_CONTAINER_OS_ID}"
  else
    echo "${NETDATA_SYSTEM_OS_ID}"
  fi
}

run() {
	local ret pid="${BASHPID}" t

	if [ "z${1}" = "z-t" -a "${2}" != "0" ]; then
		t="${2}"
		shift 2
		timeout "${t}" "${@}" 2>"${TMP_DIR}/run.${pid}"
		ret=$?
	else
		"${@}" 2>"${TMP_DIR}/run.${pid}"
		ret=$?
	fi

	if [ ${ret} -ne 0 ]; then
		{
			printf "$(logdate): ${PROGRAM_NAME}: ${status}: ${MODULE_NAME}: command '"
			printf "%q " "${@}"
			printf "' failed with code ${ret}:\n --- BEGIN TRACE ---\n"
			cat "${TMP_DIR}/run.${pid}"
			printf " --- END TRACE ---\n"
		} >&2
	fi
	rm -f "${TMP_DIR}/run.${pid}"

	return ${ret}
}

# convert any floating point number
# to integer, give a multiplier
# the result is stored in ${FLOAT2INT_RESULT}
# so that no fork is necessary
# the multiplier must be a power of 10
float2int() {
	local f m="$2" a b l v=($1)
	f=${v[0]}

	# the length of the multiplier - 1
	l=$((${#m} - 1))

	# check if the number is in scientific notation
	if [[ ${f} =~ ^[[:space:]]*(-)?[0-9.]+(e|E)(\+|-)[0-9]+ ]]; then
		# convert it to decimal
		# unfortunately, this fork cannot be avoided
		# if you know of a way to avoid it, please let me know
		f=$(printf "%0.${l}f" ${f})
	fi

	# split the floating point number
	# in integer (a) and decimal (b)
	a=${f/.*/}
	b=${f/*./}

	# if the integer part is missing
	# set it to zero
	[ -z "${a}" ] && a="0"

	# strip leading zeros from the integer part
	# base 10 conversion
	a=$((10#$a))

	# check the length of the decimal part
	# against the length of the multiplier
	if [ ${#b} -gt ${l} ]; then
		# too many digits - take the most significant
		b=${b:0:l}

	elif [ ${#b} -lt ${l} ]; then
		# too few digits - pad with zero on the right
		local z="00000000000000000000000" r=$((l - ${#b}))
		b="${b}${z:0:r}"
	fi

	# strip leading zeros from the decimal part
	# base 10 conversion
	b=$((10#$b))

	# store the result
	FLOAT2INT_RESULT=$(((a * m) + b))
}

# -----------------------------------------------------------------------------
# charts check functions

all_charts() {
	cd "$chartsd"
	[ $? -ne 0 ] && error "cannot cd to $chartsd" && return 1

	ls *.chart.sh | sed "s/\.chart\.sh$//g"
}

declare -A charts_enable_keyword=(
	['apache']="force"
	['cpu_apps']="force"
	['cpufreq']="force"
	['example']="force"
	['exim']="force"
	['hddtemp']="force"
	['load_average']="force"
	['mem_apps']="force"
	['mysql']="force"
	['nginx']="force"
	['phpfpm']="force"
	['postfix']="force"
	['sensors']="force"
	['squid']="force"
	['tomcat']="force"
)

declare -A obsolete_charts=(
  ['ap']="go.d/ap"
	['apache']="python.d.plugin module"
	['cpu_apps']="apps.plugin"
	['cpufreq']="proc plugin"
	['exim']="python.d.plugin module"
	['hddtemp']="python.d.plugin module"
	['load_average']="proc plugin"
	['mem_apps']="proc plugin"
	['mysql']="python.d.plugin module"
	['nginx']="python.d.plugin module"
	['phpfpm']="python.d.plugin module"
	['postfix']="python.d.plugin module"
	['squid']="python.d.plugin module"
	['tomcat']="python.d.plugin module"
)

all_enabled_charts() {
	local charts enabled required

	# find all enabled charts
	for chart in $(all_charts); do
		MODULE_NAME="${chart}"

		if [ -n "${obsolete_charts["$MODULE_NAME"]}" ]; then
		  debug "is replaced by ${obsolete_charts["$MODULE_NAME"]}, skipping it."
		  continue
		fi

		eval "enabled=\$$chart"
		if [ -z "${enabled}" ]; then
			enabled="${enable_all_charts}"
		fi

		required="${charts_enable_keyword[${chart}]}"
		[ -z "${required}" ] && required="yes"

		if [ ! "${enabled}" = "${required}" ]; then
			info "is disabled. Add a line with $chart=$required in '${NETDATA_USER_CONFIG_DIR}/${PROGRAM_NAME}.conf' to enable it (or remove the line that disables it)."
		else
			debug "is enabled for auto-detection."
			local charts="$charts $chart"
		fi
	done
	MODULE_NAME="main"

	local charts2=
	for chart in $charts; do
		MODULE_NAME="${chart}"

		# check the enabled charts
		local check="$(cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_check()")"
		if [ -z "$check" ]; then
			error "module '$chart' does not seem to have a $chart$charts_check() function. Disabling it."
			continue
		fi

		local create="$(cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_create()")"
		if [ -z "$create" ]; then
			error "module '$chart' does not seem to have a $chart$charts_create() function. Disabling it."
			continue
		fi

		local update="$(cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_update()")"
		if [ -z "$update" ]; then
			error "module '$chart' does not seem to have a $chart$charts_update() function. Disabling it."
			continue
		fi

		# check its config
		#if [ -f "$userconfd/$chart.conf" ]
		#then
		#   if [ ! -z "$( cat "$userconfd/$chart.conf" | sed "s/^ \+//g" | grep -v "^$" | grep -v "^#" | grep -v "^$chart$charts_underscore" )" ]
		#   then
		#       error "module's $chart config $userconfd/$chart.conf should only have lines starting with $chart$charts_underscore . Disabling it."
		#       continue
		#   fi
		#fi

		#if [ $dryrunner -eq 1 ]
		#   then
		#   "$pluginsd/charts.d.dryrun-helper.sh" "$chart" "$chartsd/$chart.chart.sh" "$userconfd/$chart.conf" >/dev/null
		#   if [ $? -ne 0 ]
		#   then
		#       error "module's $chart did not pass the dry run check. This means it uses global variables not starting with $chart. Disabling it."
		#       continue
		#   fi
		#fi

		local charts2="$charts2 $chart"
	done
	MODULE_NAME="main"

	echo $charts2
	debug "enabled charts: $charts2"
}

# -----------------------------------------------------------------------------
# load the charts

suffix_retries="_retries"
suffix_update_every="_update_every"
active_charts=
for chart in $(all_enabled_charts); do
	MODULE_NAME="${chart}"

	debug "loading module: '$chartsd/$chart.chart.sh'"

	source "$chartsd/$chart.chart.sh"
	[ $? -ne 0 ] && warning "Module '$chartsd/$chart.chart.sh' loaded with errors."

	# first load the stock config
	if [ -f "$stockconfd/$chart.conf" ]; then
		debug "loading module configuration: '$stockconfd/$chart.conf'"
		source "$stockconfd/$chart.conf"
		[ $? -ne 0 ] && warning "Config file '$stockconfd/$chart.conf' loaded with errors."
	else
		debug "not found module configuration: '$stockconfd/$chart.conf'"
	fi

	# then load the user config (it overwrites the stock)
	if [ -f "$userconfd/$chart.conf" ]; then
		debug "loading module configuration: '$userconfd/$chart.conf'"
		source "$userconfd/$chart.conf"
		[ $? -ne 0 ] && warning "Config file '$userconfd/$chart.conf' loaded with errors."
	else
		debug "not found module configuration: '$userconfd/$chart.conf'"

		if [ -f "$olduserconfd/$chart.conf" ]; then
			# support for very old netdata that had the charts.d module configs in /etc/netdata
			info "loading module configuration from obsolete location: '$olduserconfd/$chart.conf'"
			source "$olduserconfd/$chart.conf"
			[ $? -ne 0 ] && warning "Config file '$olduserconfd/$chart.conf' loaded with errors."
		fi
	fi

	eval "dt=\$$chart$suffix_update_every"
	dt=$((dt + 1 - 1)) # make sure it is a number
	if [ $dt -lt $update_every ]; then
		eval "$chart$suffix_update_every=$update_every"
	fi

	$chart$charts_check
	if [ $? -eq 0 ]; then
		debug "module '$chart' activated"
		active_charts="$active_charts $chart"
	else
		error "module's '$chart' check() function reports failure."
	fi
done
MODULE_NAME="main"
debug "activated modules: $active_charts"

# -----------------------------------------------------------------------------
# check overwrites

# enable work time reporting
debug_time=
test $debug -eq 1 && debug_time=tellwork

# if we only need a specific chart, remove all the others
if [ ! -z "${chart_only}" ]; then
	debug "requested to run only for: '${chart_only}'"
	check_charts=
	for chart in $active_charts; do
		if [ "$chart" = "$chart_only" ]; then
			check_charts="$chart"
			break
		fi
	done
	active_charts="$check_charts"
fi
debug "activated charts: $active_charts"

# stop if we just need a pre-check
if [ $check -eq 1 ]; then
	info "CHECK RESULT"
	info "Will run the charts: $active_charts"
	exit 0
fi

# -----------------------------------------------------------------------------

cd "${TMP_DIR}" || exit 1

# -----------------------------------------------------------------------------
# create charts

run_charts=
for chart in $active_charts; do
	MODULE_NAME="${chart}"

	debug "calling '$chart$charts_create()'..."
	$chart$charts_create
	if [ $? -eq 0 ]; then
		run_charts="$run_charts $chart"
		debug "'$chart' initialized."
	else
		error "module's '$chart' function '$chart$charts_create()' reports failure."
	fi
done
MODULE_NAME="main"
debug "run_charts='$run_charts'"

# -----------------------------------------------------------------------------
# update dimensions

[ -z "$run_charts" ] && fatal "No charts to collect data from."

keepalive() {
  if [ ! -t 1 ] && ! printf "\n"; then
    chartsd_cleanup
  fi
}

declare -A charts_last_update=() charts_update_every=() charts_retries=() charts_next_update=() charts_run_counter=() charts_serial_failures=()
global_update() {
	local exit_at \
		c=0 dt ret last_ms exec_start_ms exec_end_ms \
		chart now_charts=() next_charts=($run_charts) \
		next_ms x seconds millis

	# return the current time in ms in $now_ms
	${current_time_ms}

	exit_at=$((now_ms + (restart_timeout * 1000)))

	for chart in $run_charts; do
		eval "charts_update_every[$chart]=\$$chart$suffix_update_every"
		test -z "${charts_update_every[$chart]}" && charts_update_every[$chart]=$update_every

		eval "charts_retries[$chart]=\$$chart$suffix_retries"
		test -z "${charts_retries[$chart]}" && charts_retries[$chart]=10

		charts_last_update[$chart]=$((now_ms - (now_ms % (charts_update_every[$chart] * 1000))))
		charts_next_update[$chart]=$((charts_last_update[$chart] + (charts_update_every[$chart] * 1000)))
		charts_run_counter[$chart]=0
		charts_serial_failures[$chart]=0

		echo "CHART netdata.plugin_chartsd_$chart '' 'Execution time for $chart plugin' 'milliseconds / run' charts.d netdata.plugin_charts area 145000 ${charts_update_every[$chart]} '' '' '$chart'"
		echo "DIMENSION run_time 'run time' absolute 1 1"
	done

	# the main loop
	while [ "${#next_charts[@]}" -gt 0 ]; do
	  keepalive

		c=$((c + 1))
		now_charts=("${next_charts[@]}")
		next_charts=()

		# return the current time in ms in $now_ms
		${current_time_ms}

		for chart in "${now_charts[@]}"; do
			MODULE_NAME="${chart}"

			if [ ${now_ms} -ge ${charts_next_update[$chart]} ]; then
				last_ms=${charts_last_update[$chart]}
				dt=$((now_ms - last_ms))

				charts_last_update[$chart]=${now_ms}

				while [ ${charts_next_update[$chart]} -lt ${now_ms} ]; do
					charts_next_update[$chart]=$((charts_next_update[$chart] + (charts_update_every[$chart] * 1000)))
				done

				# the first call should not give a duration
				# so that netdata calibrates to current time
				dt=$((dt * 1000))
				charts_run_counter[$chart]=$((charts_run_counter[$chart] + 1))
				if [ ${charts_run_counter[$chart]} -eq 1 ]; then
					dt=
				fi

				exec_start_ms=$now_ms
				$chart$charts_update $dt
				ret=$?

				# return the current time in ms in $now_ms
				${current_time_ms}
				exec_end_ms=$now_ms

				echo "BEGIN netdata.plugin_chartsd_$chart $dt"
				echo "SET run_time = $((exec_end_ms - exec_start_ms))"
				echo "END"

				if [ $ret -eq 0 ]; then
					charts_serial_failures[$chart]=0
					next_charts+=($chart)
				else
					charts_serial_failures[$chart]=$((charts_serial_failures[$chart] + 1))

					if [ ${charts_serial_failures[$chart]} -gt ${charts_retries[$chart]} ]; then
						error "module's '$chart' update() function reported failure ${charts_serial_failures[$chart]} times. Disabling it."
					else
						error "module's '$chart' update() function reports failure. Will keep trying for a while."
						next_charts+=($chart)
					fi
				fi
			else
				next_charts+=($chart)
			fi
		done
		MODULE_NAME="${chart}"

		# wait the time you are required to
		next_ms=$((now_ms + (update_every * 1000 * 100)))
		for x in "${charts_next_update[@]}"; do [ ${x} -lt ${next_ms} ] && next_ms=${x}; done
		next_ms=$((next_ms - now_ms))

		if [ ${LOOPSLEEPMS_HIGHRES} -eq 1 -a ${next_ms} -gt 0 ]; then
			next_ms=$((next_ms + current_time_ms_accuracy))
			seconds=$((next_ms / 1000))
			millis=$((next_ms % 1000))
			if [ ${millis} -lt 10 ]; then
				millis="00${millis}"
			elif [ ${millis} -lt 100 ]; then
				millis="0${millis}"
			fi

			debug "sleeping for ${seconds}.${millis} seconds."
			${mysleep} ${seconds}.${millis}
		else
			debug "sleeping for ${update_every} seconds."
			${mysleep} $update_every
		fi

		test ${now_ms} -ge ${exit_at} && exit 0
	done

	fatal "nothing left to do, exiting..."
}

global_update
Youez - 2016 - github.com/yon3zu
LinuXploit