如果要在2种不同的JSON中解析对象，如何避免重复对象

Question

I have an object that I receive:

{
    "operation": "ACC00000001", 
    "prm": "23597250350000", 
    "conso_prod": "Conso",
    "index_name": "BASE",
    "index_value": "123456",
    "timestamp": "2019-08-20T22:00:00Z"
 }

The object I use is in a common lib, so it is shared by several services:

common.Measure:

type Measure struct {
    Timestamp     time.Time
    Delta         float64
    Redistributed float64
    IsProd        bool
    IndexValue    uint32
    IndexName     string 
    Source        string 
}

and Meter:

type Meter struct {
    ID          string
    Operation string
    Unit        string
    Timestep    time.Duration
    Measures    []Measure
}

But as the labels don't match, I must create another object MeasureFromJSON which is the created based in the json I receive.

type MeasureFromJSON struct {
    Operation   string `json:"operation" binding:"required"`
    Prm         string `json:"prm"`
    Conso_prod  string `json:"conso_prod"`
    Index_name  string `json:"index_name"`
    Index_value string `json:"index_value"`
    Timestamp   string `json:"timestamp"`
}

Thing is I don't like to use 2 models for the same entity, just because I have no JSON labels in common object. Is there a way to use the common models (meter.Measure)?

Answer 1

Thing is I don't like to use 2 models for the same entity, just because I have no JSON labels in common object

First of all, I have a question, how come same entity return two different sets of data that majority of the fields are different?

If those different fields are still from single entity, then you could probably combine the fields and store it into single common.Measure.

type Measure struct {
    Timestamp     time.Time `json:"timestamp"`
    Delta         float64
    Redistributed float64
    IsProd        bool
    IndexValue    string `json:"index_value"`
    IndexName     string `json:"index_name"` 
    Source        string 
    ConsoProd     string  `json:"conso_prod"` 
    Prm           string  `json:"prm"` 
    Operation     string  `json:"operation"` 
}