How can I unmarshal the following json into golang struct [closed] - json

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How can I unmarshal the following json into golang struct
{
"VM": {
"0": {
"component": "A",
"name": "hostname1",
"hostname": "hostname1",
"role": "NODE",
"this": true,
"type": "t1"
},
"1": {
"component": "B",
"name": "hostname2",
"hostname": "hostname2",
"role": "role2",
"type": "t2"
},
"2": {
"component": "C",
"name": "hostname3",
"hostname": "hostname3",
"role": "role3",
"type": "t3"
},
"n": { //this can go upto n levels
"component": "N",
"name": "hostnamen",
"hostname": "hostnamen",
"role": "rolen",
"type": "tn"
}
}
}

Answer 1

This is a handy online resource to get you started: https://mholt.github.io/json-to-go/
It does however get tripped up by defining specific struct fields instead of using a map - which appears the case here.
Striking a balance:
type Collection map[string][string]Component
type Component struct {
Component string `json:"component"`
Name string `json:"name"`
Hostname string `json:"hostname"`
Role string `json:"role"`
This bool `json:"this"`
Type string `json:"type"`
}
If your output always has a "VM" key at the top-level, then the Collection type could be flattened to something like:
type Collection struct {
VM map[string]Component `json:"VM"`
}
// Component def stays the same
If you're confident the component indices will always be numeric, this may work too:
type Collection struct {
VM map[int]Component `json:"VM"` // index by `int` instead of `string`
}
PlayGround example: https://play.golang.org/p/ewHnlq8h1Vc