metrics.sh/metrics.sh

#!/bin/sh

# config
INTERVAL=2
REPORTER=stdout
METRICS=cpu,disk_io,disk_usage,heartbeat,memory,network_io,swap

# env
LC_ALL=en_US.UTF-8
LANG=en_US.UTF-8
LANGUAGE=en_US.UTF-8

usage () {
  echo "  Usage: $0 [-d] [-h] [-v] [-m metrics] [-r reporter] [-i interval]"
}

help () {
  echo
  usage
  echo
  echo "  Options: "
  echo
  echo "    -m, --metrics  <metric1,...>  use specified metrics"
  echo "    -r, --reporter <reporter>     use specified reporter (default: stdout)"
  echo "    -i, --interval <seconds>      collect metrics every n seconds (default: 2)"
  echo "    -v, --verbose                 enable verbose mode"
  echo "    -d, --docs                    show documentation"
  echo "    -h, --help                    show this text"
  echo
}

# handle opts
opt_docs=false
opt_verbose=false

while [ $# -gt 0 ]; do
  case $1 in
    -m|--metrics)
      shift
      METRICS=$1
      ;;

    -r|--reporter)
      shift
      REPORTER=$1
      ;;

    -i|--interval)
      shift
      INTERVAL=$1
      ;;

    -v|-verbose)
      opt_verbose=true
      ;;

    -d|--docs)
      opt_docs=true
      ;;

    -h|--help)
      help
      exit
      ;;

    *)
      usage
      exit 1
      ;;
  esac

  shift
done

# run
. ./lib/main.sh

if [ $opt_verbose = "true" ]; then
  verbose_on
  verbose "Started in verbose mode"
fi
verbose "OS detected: $OS_TYPE"

main_load
verbose "Available metrics: $__AVAILABLE_METRICS"
verbose "Available reporters: $__AVAILABLE_REPORTERS"

if [ $opt_docs = true ]; then
  main_docs
  exit
fi

main_init $METRICS $REPORTER
verbose "Using metrics: $__METRICS"
verbose "Using reporter: $__REPORTER"

verbose "Collecting metrics every $INTERVAL second(s)"
main_collect