Architecture

Description

Our project is based on Tencent Cloud. Three products are used in our project.

• SCF: provide a runtime environmemt.
• COS: store staff.
• API Gateway: expose services to users.

Workflow

APIs is the only service expose to user, which they can directly access. API-gateway receive all external user web request and response corresponding processed data. The request will be passed to COS or SCF for further handling. COS processes the data storage task. SCF deals with image processing.

A whole image processing request contains 4 sub-queries.

1. Get authorized secret key to upload image

   For safety reasons, the user cannot get the authorization for uploading image as the administrator. Users’ image will be checked and users will be returned an authorized signature for uploading an image to COS.

2. Upload image with signature

   User upload image with the signature.

3. Post parameter to image processing

   User post the image processing query to the API, which includes the parameters. A processed image path will be returned.

4. Download processed image

   User can preview or download processed image from previous path.