retry1.txt

#!/usr/local/bin/bash
if [ "$1" == "-h" ]; then
	cat <<EOF
*****************************************************************
* Initializing system, please try later!
* Power by Lex. Let's go! and be happy!
* version 1.0
  echo "Examples:"
  echo "  $0 -e asia-es1 -c update or delete or adddns"
*****************************************************************
EOF
	exit 0
fi

function usage() {
	echo "Usage: $0 [-e <asia-es1 asia-es2 eu-a eu-b>]" 1>&2
	echo "Create a new zone name and A recored in specified environment."
	echo
	echo "  -e       env and apiRegion                                              required"
	echo
	echo "Examples:"
	echo "  $0 -e asia-es1 -c upgrade"
	exit 1
}

SCRIPT_NAME="${0##*/}"
info() {
  echo "${SCRIPT_NAME}: ${1}"
}
warn() {
  info "[WARNING]: ${1}" >&2
}

fatal() {
  warn "ERROR: ${1}"
  exit 2
}

function finish_checked() {
  if [[ $count -eq 3 ]]; then
  echo "ERROR: cloud dns record-sets transaction execute failure, Please rerun your deploy"
  exit 1
  else
   echo "success add cloud dns record"
   fi
}

#######
# retry takes an integer N as the first argument, and a list of arguments
# representing a command afterwards. It will retry the given command up to N
# times before returning 1. If the command is ifconfig, it will try to
# re-get credentials in case something caused the k8s IP to change.
retry() {
  local MAX_TRIES; MAX_TRIES="${1}";
  shift 1
  for i in $(seq 0 "${MAX_TRIES}"); do
    if [[ "${i}" -eq "${MAX_TRIES}" ]]; then
      break
    fi
    { "${@}" && return 0; } || true
    warn "Failed, retrying...($((i+1)) of ${MAX_TRIES})"
    sleep 2
  done
  local CMD="'$*'"
  warn "Command $CMD failed."
  false
}

retry 4 netstat -an | grep -i "listen"|grep www
#retry 4 netstat -an | grep -i "listen"
if ! retry 4 netstat -an | grep -i "listen"|grep www; then
#https://github.com/koalaman/shellcheck/wiki/SC2181
#if [ $? -ne 0 ]; then
    echo "ERROR: www is not listen"
    count=0
    while [ $count -lt 3 ]; do
    echo "5 seconds sleep and try again"
    info "5 seconds sleep and try again"
    sleep 5
    echo "re-add new record"
    rm -fr ./transaction.yaml
    echo "first delete transaction.yaml"
    warn "first delete transaction.yaml"
    #gcloud dns record-sets transaction start -z "${ZoneName?
    #gcloud dns record-sets transaction add "${externalIP)"-name="${DomainserviceName}" -ttl="${TTL}" -type="${RecordType}" --zone="${ZoneName}"
    #gcloud dns record-sets transaction execute - "${ZoneName]" --verbosity debug
    if [ $? = 0 ]; then
    echo "add record ok" && break
    else
    count=$(($count+1))
    fi
    done
    finish_checked
fi
awk 'BEGIN{while (a++<50) s=s "-"; print s,"splite line",s}'
function check_metadata_is_available() {
  local count=0
  local flag=$(curl -I -m 10 -o /dev/null -s -w %{http_code} http://www.baidu.com)
  if [ -z "$flag" ]; then
    while [ $count -lt 3 ]; do
      echo "30 seconds sleep and try again ..."
      sleep 30
      flag=$(curl -I -m 10 -o /dev/null -s -w %{http_code} http://www.baidu.com)
      [ "$flag" ] && break
      count=$(($count+1))
    done
  fi
  echo "The number of attempts to run check_metadata_is_available function: $count"
  echo "The flag: $flag"
  [ $flag ] && echo "The metadata is available" || echo "The metadata is unavailable"
}
check_metadata_is_available
#https://stackoverflow.com/questions/7449772/how-to-retry-a-command-in-bash
awk 'BEGIN{while (a++<50) s=s "-"; print s,"splite line",s}'

finish() {
    # shellcheck disable=SC2181
    if [ $? -ne 0 ]; then
        echo "ERROR: failed your command."
    fi
}
#$@ 是传给脚本的所有参数的列表
retry3() {
    local -r -i max_attempts="$1"; shift
    local -i attempt_num=1
    until "$@"
    do
        if ((attempt_num==max_attempts))
        then
            echo "Attempt $attempt_num failed and there are no more attempts left!"
            return 1
        else
            echo "Attempt $attempt_num failed! Trying again in $attempt_num seconds..."
            sleep $((attempt_num++))
        fi
    done
}

function curl_www() {
  url_stat=$(curl -I -m 10 -o /dev/null -s -w %{http_code} http://www.baidu.com)
  echo "$url_stat"
}

#retry3 5 curl -I https://gitee.comt
retry3 5 curl_www
echo "The number of attempts to run retry3 function: $count"
finish

awk 'BEGIN{while (a++<50) s=s "-"; print s,"splite line",s}'


function finish_curl_checked() {
  if [[ $max_attempts -eq 5 ]]; then
  echo "ERROR: curl 5 time and failed"
  exit 1
  else
   echo "success curl you url"
   fi
}

#finish_curl_checked
usage_short() {
  cat << EOF
${SCRIPT_NAME} $(version_message)
usage: ${SCRIPT_NAME} [OPTION]...
Set up, validate, and install ASM in a Google Cloud environment.
Use -h|--help with -v|--verbose to show detailed descriptions.

EOF
}
#$* 这个程式的所有参数
  if [[ "${*}" = '' ]]; then
    usage_short >&2
    echo "Please input you parameters"
    exit 2
  fi

fatal() {
  warn "ERROR: ${1}"
  exit 2
}

if [ "$1" == "-h" ] ; then
cat << EOF
*****************************************************************
* Initializing system, please try later!
* Power by Lex. Let's go! and be happy!
* version 1.0
  echo "Examples:"
  echo "  $0 -e asia-es1 -c upgrade or delete or adddns"
*****************************************************************
EOF
exit 0
fi

env_arr=(asia-es1 asia-es2 eu-a eu-b pdev-cn prd-cn)
module_arr=(install migrate upgrade)
while getopts ":e:c:h:" o; do
  case $o in
    e)  e=${OPTARG}
    [[ " ${env_arr[*]} " == *" $e "* ]] || usage
    ;;
    c)  c=${OPTARG}
    [[ " ${module_arr[*]} " == *" $c "* ]] || usage
    ;;
    h)  echo "a script to "
         echo "Usage:"
         echo "Source:"
         ;;
    *) esac
done

case $e in
    "asia-es1")
     project=china-010115-ddd-dev
     ;;
    "asia-es2")
     project=china-0290910-pp-dev
     ;;
    "eu-a"|"eu-b")
     project=china-0290910-aaa-dev
     ;;
     "prd-cn")  project=china-apichina-prod;;
    *) echo "Error input space and region!"
       exit 1
esac

if [ ! "$e" ]; then
    echo "please enter env and api region" >&2
    exit 1
fi

if [ ! "$c" ]; then
    echo "please enter mode" >&2
    exit 1
fi

# shellcheck disable=SC2064
  case "${c}" in
    install | migrate | upgrade);;
    *) fatal "MODE must be one of 'install', 'migrate', 'upgrade'";;
  esac
#./retry1.sh -e asia-es1 -c migrate

#使用"-t"选项，在每次读取一行后就去掉该行的换行符
mapfile -d " " -t myarr < /Users/lex/shell/ip.txt
echo "${myarr[@]}"


IFS=' '
while read -r ip user password port; do
  echo "ip: $ip"
  echo "user: $user"
  echo "password: $password"
  echo "port: $port"
  echo "-----------------------------"
  echo "$ip $user"
done < /Users/lex/shell/ip.txt


function upgrade()
{
info "upgrade"
echo "need a new zone name"
echo "need a new A record"
}

if [ "${c}" == "upgrade" ];
then
    echo "upgrade"
    echo $project
    upgrade
fi

#./retry1.sh -e asia-es1 -c upgrade