operator-util.sh

#!/bin/sh

set -o pipefail
set +o xtrace

red=$(tput setaf 1)
green=$(tput setaf 2)
reset=$(tput sgr0)

function os_type() {
    OS=${OSTYPE//[0-9.-]*/}
    case "$OS" in
        darwin) machine=Mac ;;
        linux)  machine=Linux ;;
        *)
        echo "Operating System $OSTYPE not supported, supported types are darwin, linux"
        exit 1
        ;;
    esac
}

## Find OS type
os_type

function echo_fail() {
  printf "\e[31m✘ ${1}"
  printf "\033\e[0m\n"
}

function echo_pass() {
  printf "\e[32m✔ ${1}"
  printf "\033\e[0m\n"
}

function die {
    echo "${red}$@${reset}"
    exit 1
}


# retry ${retries} "ls"
function retry() {
  local retries=$1
  shift
  local count=0
  until "$@"; do
    exit=$?
    wait=$((2 ** $count))
    count=$(($count + 1 ))
    if [[ ${count} -lt ${retries} ]]; then
      echo "Retry $count/$retries exited ${exit}, retrying in ${wait}  seconds..."
      sleep ${wait}
    else
      echo "Retry $count/$retries exited ${exit}, no more retries left."
      exit 1
      return 1
    fi
  done

  return 0
}

# run_cmd "ls -l" "${verbose}"
function run_cmd() {
  enable_debug=$2
  echo "Run Command:\n"
  echo "\t${green}$1${reset}\n"
  if [[ ${enable_debug} = "true" ]]; then
    eval $1
  else
    val=$(eval $1 2>&1)
  fi
  if [[ $? != 0 ]]; then
      die "${red}Unable to execute ${1} ${val} ${reset}\n"
  fi
}