#!/bin/bash

# 获取脚本所在目录的绝对路径
SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)

# 切换工作目录到脚本所在目录
cd $SCRIPT_DIR

# 声明变量
container_name="postgres"
pg_database=$1 # 设置pg_database为第一个传参，默认为postgres
pg_user="postgres"
backup_dir="./data/backup/"

current_datetime=$(date +"%Y%m%d_%H%M%S")
filename="${pg_database}_full_${current_datetime}"

# 清除几天前的备份
days=${2:-15}
# 删除符合条件的文件并记录到cleardump.log
find $backup_dir -maxdepth 1 -name "${pg_database}*" -mtime +$days -exec sh -c 'echo "$(date): $1" >> cleardump.log; rm -rf $1' sh {} \;
# 创建新备份
docker exec -i "$container_name" pg_dump -U postgres -Fd "$pg_database" -f "${backup_dir}${filename}" -j 4