Handle arbritrary keys

[Chris Wilson]

First off thanks for making this tool. I've used it on several projects. One issue I've bumped into a few times now is:

Some services, use JSON where the keys are arbitrarily generated. Here is an example where I handle this in my own code.

Sample JSON input

{
    "status": "success",
    "response": {
        "12345678": {
            "dynamic": true,
            "label": "My Label One",
            "ip_address": "11.222.123.124"
        },
         "22345678": {
            "dynamic": false,
            "label": "My Label two",
            "ip_address": "11.222.123.124"
        }
    }
}

In this case the keys "22345678" and "12345678" are dynamic. I am not a fan of this sort of data structure and would much prefer if they would have used an array. But I have no control over this third-party service.

It would be nice if there were a way to give a hint to json-to-go so it would generate that as a map with a given object value.

Current Output

type AutoGenerated struct {
	Status   string `json:"status"`
	Response struct {
		Num12345678 struct {
			Dynamic   bool   `json:"dynamic"`
			Label     string `json:"label"`
			IPAddress string `json:"ip_address"`
		} `json:"12345678"`
		Num22345678 struct {
			Dynamic   bool   `json:"dynamic"`
			Label     string `json:"label"`
			IPAddress string `json:"ip_address"`
		} `json:"22345678"`
	} `json:"response"`
}

Preferred Output

It would be much better if the resulting structs would do something like this instead:

Response     map[string]NetworkObject `json:"response"` 

type NetworkObject struct {
	Dynamic   bool   `json:"dynamic"`
	Label     string `json:"label"`
	IPAddress string `json:"ip_address"`
}

type NetworksResponse struct {
	Status       string                   `json:"status"`
	Response     map[string]NetworkObject `json:"response"`
	Error        int                      `json:"error"`
	ErrorMessage string                   `json:"error_message"`
}

Solution

With all this said I am not quite sure how to provide this sort of hint to json-to-go. Maybe could use special key names or potentially provide a JSON array that contains a list of keys what should invoke this sort of behavior.

Maybe something like this "json2go_dynamic_keys":["12345678", "22345678"], so the resulting input json would be this:

{
   "json2go_dynamic_keys":["12345678", "22345678"],
    "status": "success",
    "response": {
        "12345678": {
            "dynamic": true,
            "label": "My Label One",
            "ip_address": "11.222.123.124"
        },
         "22345678": {
            "dynamic": false,
            "label": "My Label two",
            "ip_address": "11.222.123.124"
        }
    }
}