Linux环境Shell脚本上传下载阿里云OSS文件

Linux环境Shell脚本上传下载阿里云OSS文件

背景

工做中因为咱们项目生成的日志文件比较重要，而本地磁盘空间有限存储不了多久，所以考虑备份方案，咱们本来打算保存在nas上，然而因为各类缘由与运维沟通下来建议保存到oss上面。

因为linux原生支持shell，而网上大多数方案基于python-sdk，所以咱们为了减小依赖，考虑直接使用shell脚本上传OSS，网上找了些资料，参见：

• https://bbs.aliyun.com/read/233456.html

坑

然而脚本试用下来有坑，特意记录一下：

1. 字符比较提示异常

上面截图字符比较会提示：

./oss.sh: 13: ./oss.sh: [get: not found
./oss.sh: 16: ./oss.sh: [put: not found
./oss.sh: 32: ./oss.sh: [put: not found

应该改为上面的格式

2.拼接url的时候把bucket也带进去了。 3.拼接签名不对，研究了好久发现不该该用“#!/bin/sh”，而须要使用“#!/bin/bash”，这是个大坑。。。

修改版本

下面给出修改版本，须要自取：

#!/bin/bash

host="oss-cn-shanghai.aliyuncs.com"
bucket="bucket名"
Id="AccessKey ID"
Key="Access Key Secret"
# 参数1，PUT：上传，GET：下载
method=$1
# 参数2，上传时为本地源文件路径，下载时为oss源文件路径
source=$2
# 参数3，上传时为OSS目标文件路径，下载时为本地目标文件路径
dest=$3

osshost=$bucket.$host

# 校验method
if test -z "$method"
then
    method=GET
fi

if [ "${method}"x = "get"x ] || [ "${method}"x = "GET"x ]
then
    method=GET
elif [ "${method}"x = "put"x ] || [ "${method}"x = "PUT"x ]
then
    method=PUT
else
    method=GET
fi

#校验上传目标路径
if test -z "$dest"
then
    dest=$source
fi

echo "method:"$method
echo "source:"$source
echo "dest:"$dest

#校验参数是否为空
if test -z "$method" || test -z "$source" || test -z "$dest"
then
    echo $0 put localfile objectname
    echo $0 get objectname localfile
    exit -1
fi

if [ "${method}"x = "PUT"x ]
then
    resource="/${bucket}/${dest}"
    contentType=`file -ib ${source} |awk -F ";" '{print $1}'`
    dateValue="`TZ=GMT date +'%a, %d %b %Y %H:%M:%S GMT'`"
    stringToSign="${method}\n\n${contentType}\n${dateValue}\n${resource}"
    signature=`echo -en $stringToSign | openssl sha1 -hmac ${Key} -binary | base64`
    echo $stringToSign
    echo $signature
    url=http://${osshost}/${dest}
    echo "upload ${source} to ${url}"
    curl -i -q -X PUT -T "${source}" \
      -H "Host: ${osshost}" \
      -H "Date: ${dateValue}" \
      -H "Content-Type: ${contentType}" \
      -H "Authorization: OSS ${Id}:${signature}" \
      ${url}
else
    resource="/${bucket}/${source}"
    contentType=""
    dateValue="`TZ=GMT date +'%a, %d %b %Y %H:%M:%S GMT'`"
    stringToSign="${method}\n\n${contentType}\n${dateValue}\n${resource}"
    signature=`echo -en ${stringToSign} | openssl sha1 -hmac ${Key} -binary | base64`
    url=http://${osshost}/${source}
    echo "download ${url} to ${dest}"
    curl --create-dirs \
      -H "Host: ${osshost}" \
      -H "Date: ${dateValue}" \
      -H "Content-Type: ${contentType}" \
      -H "Authorization: OSS ${Id}:${signature}" \
      ${url} -o ${dest}
fi

执行命令：

#上传
$ ./oss.sh put a.gz c.gz

#下载
$ ./oss.sh get c.gz d.gz

---

2018-11-21更新：

今天看到阿里云提供ossutil64，详见：https://help.aliyun.com/document_detail/50452.html 有了这个方便不少。