Get the finalized value for the "Authorization" header.

CanonicalHeaders.

CanonicalQueryString.

Build a CanonicalRequest from a regular request string CanonicalRequest = HTTPRequestMethod + '\n' + CanonicalURI + '\n' + CanonicalQueryString + '\n' + CanonicalHeaders + '\n' + SignedHeaders + '\n' + HexEncode(Hash(RequestPayload)).

CanonicalURI returns request uri.

HexEncodeSHA256Hash returns hexcode of sha256.

RequestPayload.

SignedHeaders.

Create the HWS Signature.

Create a "String to Sign".

公共镜像：gold.

私有镜像：private.

共享镜像：shared.

active：表示镜像可以正常使用.

deleted：表示镜像已经删除。.

killed：表示镜像上传错误。.

queued：表示镜像元数据已经创建成功，等待上传镜像文件。.

saving：表示镜像正在上传文件到后端存储。.

云硬盘快照创建成功，可以使用。.

通过快照创建备份，快照状态就会变为backing-up.

云硬盘快照处于正在删除的过程中。.

云硬盘快照在创建过程中出现错误。.

云硬盘快照在删除过程中出现错误.

云硬盘快照处于正在回滚数据的过程中。.

===========================================.

https://support.huaweicloud.com/api-evs/zh-cn_topic_0124881427.html.

https://support.huaweicloud.com/api-dcs/dcs-zh-api-180423020.html.

https://support.huaweicloud.com/api-dcs/dcs-zh-api-180423035.html.

https://support.huaweicloud.com/api-dcs/dcs-zh-api-180423027.html.

Signature HWS meta.

https://support.huaweicloud.com/api-ims/zh-cn_topic_0020091565.html.

https://support.huaweicloud.com/api-ecs/zh-cn_topic_0094148849.html https://support.huaweicloud.com/api-bpconsole/zh-cn_topic_0100166287.html v1.1 支持创建包年/包月的弹性云服务器.

https://support.huaweicloud.com/api-ecs/zh-cn_topic_0020212656.html.

https://support.huaweicloud.com/api-ecs/zh-cn_topic_0020212676.html.

https://support.huaweicloud.com/api-vpc/zh-cn_topic_0020090590.html.

https://support.huaweicloud.com/api-evs/zh-cn_topic_0051408624.html.

华为云的子网有点特殊。子网在整个region可用。.