PATHIN

Pathin is a path generator using predefined handlers that I wrote as part of my abstract cloud storage package to store my files to the right location.

Let me give give you an example:

In your cloud storage, you probably have client data, that you only want to store in their client bucket/directory, but this directory can also contain multiple sub-directories, and so on. So you could end up with paths like these:

    /my-product-bucket/clients/974/templates/999/images/thumbs/20170416/super_thumb.png
    /my-product-bucket/clients/974/profile/pictures/super_pic_997.png
    /my-product-bucket/public/public_file.pdf

Using Pathin, you could group rules, and create your target destination:

    pg := pathin.New("my-product-bucket")
    pg.AddDest("public", pathin.RawHandler) // RawHandler uses the destination or group name

    clientGroup := pg.AddDestGroup("clients", clientHandler)
    clientGroup.AddDest("template-image", templatesHandler, imageHandler)
    clientGroup.AddDest("profile-picture", profilePicHandler)

And for the handlers:

    // Useful data you want to pass in
    type MyData struct {
        clientId string
        templateId string
        fileName string
    }

    // eg. /clients/974
    func clientHandler(t string, values interface{}) (string, error) {
        myData, _ := values.(*myData)

        return "/clients/" + myData.clientId, nil
    }

    // eg. /templates/999
    func templatesHandler(t string, values interface{}) (string, error) {
        myData, _ := values.(*myData)

        return "/templates/" + myData.templateId, nil
    }

    func imageHandler(t string, values interface{}) (string, error) {
        thumbPreg := regexp.MustCompile(".*_thumb\\..+")

        path := ""
        if thumbPreg.Match(values.fileName) {
            path += "/thumbs"
        } else {
            path += "/misc"
        }

        return path + "/" + fmt.Sprint(time.Now().Format("Ymd")), nil
    }

    ... you get it

I would not recommend to use it in prod just yet, more tests will need to be written.

TODO:

• More tests
• More docs