docker/src/main/DockerCompose/replace-conf-from-env.sh

#!/bin/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.
#

if [[ "$1" == "ainode" ]]; then
  conf_path=${IOTDB_AINODE_HOME}/conf
  target_files="iotdb-ainode.properties"
else
  conf_path=${IOTDB_HOME}/conf
  target_files="iotdb-system.properties"
fi

echo "#################################"
echo "replace the following configs"
echo "conf_path=$conf_path"
echo "target_files=$target_files"

function process_single(){
	local key_value="$1"
	local filename=$2
	local key=$(echo $key_value|cut -d = -f1)
	local line=$(grep -ni "${key}=" ${filename})
	#echo "line=$line"
	if [[ -n "${line}" ]]; then
    echo "update $key_value $filename"
    local line_no=$(echo $line|cut -d : -f1)
    local content=$(echo $line|cut -d : -f2)
    if [[ "${content:0:1}" != "#" ]]; then
      sed -i "${line_no}d" ${filename}
    fi
    sed -i "${line_no}a${key_value}" ${filename}
  else
    echo "append $key_value $filename"
    line_no=$(wc -l $filename|cut -d ' ' -f1)
    sed -i "${line_no}a${key_value}" ${filename}
	fi
}

function replace_configs(){
  for v in $(env); do
    key_name="${v%%=*}"
    if [[ "${key_name}" == "${key_name,,}" && ! 2w$key_name =~ ^_ ]]; then
#      echo "###### $v ####"
      for f in ${target_files}; do
          process_single $v ${conf_path}/$f
      done
    fi
  done
}

replace_configs

echo "#################################"