Unmarshal Source Data to Struct #27

Piszmog · 2022-02-27T22:10:33Z

Add functionality to convert the slice of PropertySource in Source to a struct.

Example

type ConfigStruct struct {
	StringVal   string         `json:"stringVal"`
	IntVal      int            `json:"intVal"`
	SliceString []string       `json:"sliceString"`
	SliceInt    []int          `json:"sliceInt"`
	SliceStruct []NestedConfig `json:"sliceStruct"`
}

type NestedConfig struct {
	StringVal string `json:"stringVal"`
	IntVal    int    `json:"intVal"`
}

func main() {
        // say we have the following source data (usually get it from calling GetConfiguration)
	source := cloudconfigclient.Source{
		PropertySources: []cloudconfigclient.PropertySource{
			{
				Name: "application-foo.yml",
				Source: map[string]interface{}{
					"stringVal":                "value1",
					"intVal":                   1,
					"sliceString[0]":           "value2",
					"sliceInt[0]":              2,
					"sliceStruct[0].stringVal": "value5",
					"sliceStruct[0].intVal":    4,
					"sliceStruct[1].intVal":    5,
					"sliceStruct[1].stringVal": "value6",
				},
			},
		},
	}

        // unmarshal to the struct
	var config ConfigStruct
	if err := source.Unmarshal(&config); err != nil {
		fmt.Println(err)
		return
	}
	// do something with the struct now
}