Simple image service

Test and run

1. generate mocks:
   go generate ./...
2. execute tests:
   go test ./...
3. run application (port 8080):
   go run cmd/main.go

Description

Service supports only two types of images: jpeg and png.

API:

1. Upload image:
   user and image name need to be specified in query parameters when apploading an image. Example below uploads png image from file image.png to the server for user john and image is stored under name mario. It is a POST method.

   curl -XPOST --data-binary "@./image.png" http://localhost:8080/images\?user\="john"\&name\="mario"

2. List images:
   Images are listed with GET method, when name query parameter is not set:

   curl http://localhost:8080/images\?user\=john

   response:

   { "mario": { "large": "http://localhost:8080/images?user=john\&name=mario\&scale=large", "medium": "http://localhost:8080/images?user=john\&name=mario\&scale=medium", "small": "http://localhost:8080/images?user=john\&name=mario\&scale=small" }

   There are tree scales available: small, medium, and large. (configured in main.go :) )

3. Query/Scale and image
   curl http://localhost:8080/images\?user\="john"\&name\="mario"\&scale\="small" --output result.jpeg