Support read data from mysql when upload data

[FancyXun]

Follow this issue: https://github.com/FederatedAI/FATE/issues/5669

Support uploading data from mysql:

Change the 'file' in upload_guest_mysql.json like bellow:

{ "file":"mysql://root:[email protected]:13312/fl/BREAST_HETERO_GUEST", "head": true, "partitions": 16, "extend_sid": true, "meta": { "delimiter": ",", "label_name": "y", "match_id_name": "id" }, "namespace": "experiment", "name": "breast_hetero_guest_mysql" }

Upload data flow data upload -c upload_guest_mysql.json

The three formats of the file variable in this JSON are as follows:

mysql://user:password@host_ip:host_port/db/table file:///path/to/local_file.csv /path/to/local_file.csv

[FancyXun]

@sagewe @dylan-fan

[sagewe]

首先很感谢你的贡献，社区对DCO有强制要求，请依照 Details 进行修复

有空看看 @zhihuiwan

[FancyXun]

首先很感谢你的贡献，社区对DCO有强制要求，请依照 Details 进行修复

有空看看 @zhihuiwan

Done!

[FancyXun]

补充一下：这样做的好处就是，能兼容现有的upload.json，只需要根据里面file的前缀判断是用读取mysql或者本地文件，json不需要新增内容。 @sagewe