distributedSystemLearn/components/apache-seata-2.5.0-incubating-bin/seata-server/script/config-center/zk/zk-config.sh

#!/usr/bin/env bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#


# The purpose is to sync the local configuration(config.txt) to zk.
# This script need to rely on zk.


while getopts ":h:p:z:" opt
do
  case $opt in
  h)
    host=$OPTARG
    ;;
  p)
    port=$OPTARG
    ;;
  z)
    zkHome=$OPTARG
    ;;
  ?)
    echo " USAGE OPTION: $0 [-h host] [-p port] [-z zkHome] "
    exit 1
    ;;
  esac
done

if [[ -z ${host} ]]; then
    host=localhost
fi
if [[ -z ${port} ]]; then
    port=2181
fi
if [[ -z ${zkHome} ]]; then
    echo " zk home is empty, please usage option: [-z zkHome] "
    exit 1
fi

zkAddr=$host:$port

root="/seata"
tempLog=$(mktemp -u)

echo "ZK address is $zkAddr"
echo "ZK home is $zkHome"
echo "ZK config root node is $root"

function check_node() {
	"$2"/bin/zkCli.sh -server "$1" ls ${root} >/dev/null 2>"${tempLog}"
}

function create_node() {
	"$2"/bin/zkCli.sh -server "$1" create ${root} "" >/dev/null
}

function create_subNode() {
	"$2"/bin/zkCli.sh -server "$1" create "${root}/$3" "$4" >/dev/null
}

function delete_node() {
	"$2"/bin/zkCli.sh -server $1 rmr ${root} "" >/dev/null
}

check_node "${zkAddr}" "${zkHome}"

if [[ $(cat "${tempLog}") =~ "No such file or directory" ]]; then
	echo " ZK home is error, please enter correct zk home! "
	exit 1
elif [[ $(cat "${tempLog}") =~ "Exception" ]]; then
	echo " Exception error, please check zk cluster status or if the zk address is entered correctly! "
	exit 1
elif [[ $(cat "${tempLog}") =~ "Node does not exist" ]]; then
	create_node "${zkAddr}" "${zkHome}"
else
	read -p "${root} node already exists, now delete ${root} node in zk, y/n: " result
	if [[ ${result} == "y" ]]; then
		echo "Delete ${root} node..."
		delete_node "${zkAddr}" "${zkHome}"
		create_node "${zkAddr}" "${zkHome}"
	else
		exit 0
	fi
fi

COMMENT_START="#"
for line in $(cat $(dirname "$PWD")/config.txt | sed s/[[:space:]]//g); do
  if [[ "$line" =~ ^"${COMMENT_START}".*  ]]; then
        continue
  fi
	key=${line%%=*}
	value=${line#*=}
	echo "Set" "${key}" "=" "${value}"
	create_subNode "${zkAddr}" "${zkHome}" "${key}" "${value}"
done