/
config.go
68 lines (62 loc) · 1.44 KB
/
config.go
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package util
import (
"fmt"
"reflect"
)
// DiffConfig utility function that returns the diff between two config map objects
func DiffConfig(defaultConfig, actualConfig map[interface{}]interface{}) (map[interface{}]interface{}, error) {
output := make(map[interface{}]interface{})
for key, value := range actualConfig {
defaultValue, ok := defaultConfig[key]
if !ok {
output[key] = value
continue
}
switch v := value.(type) {
case int:
defaultV, ok := defaultValue.(int)
if !ok || defaultV != v {
output[key] = v
}
case string:
defaultV, ok := defaultValue.(string)
if !ok || defaultV != v {
output[key] = v
}
case bool:
defaultV, ok := defaultValue.(bool)
if !ok || defaultV != v {
output[key] = v
}
case []interface{}:
defaultV, ok := defaultValue.([]interface{})
if !ok || !reflect.DeepEqual(defaultV, v) {
output[key] = v
}
case float64:
defaultV, ok := defaultValue.(float64)
if !ok || !reflect.DeepEqual(defaultV, v) {
output[key] = v
}
case nil:
if defaultValue != nil {
output[key] = v
}
case map[interface{}]interface{}:
defaultV, ok := defaultValue.(map[interface{}]interface{})
if !ok {
output[key] = value
}
diff, err := DiffConfig(defaultV, v)
if err != nil {
return nil, err
}
if len(diff) > 0 {
output[key] = diff
}
default:
return nil, fmt.Errorf("unsupported type %T", v)
}
}
return output, nil
}