Function extractNestedMap

cmd/tempo-cli/cmd-migrate-config.go:49–62

extractNestedMap walks a path of keys through a nested map structure and returns the map at that path. Returns nil, false if any key is missing or if any intermediate value is not a map.

(m map[string]interface{}, path ...string)

// returns the map at that path. Returns nil, false if any key is missing or
// if any intermediate value is not a map.
func extractNestedMap(m map[string]interface{}, path ...string) (map[string]interface{}, bool) {
	current := m
	for _, key := range path {
		v, ok := current[key]
		if !ok {
			return nil, false
		}
		current, ok = asMap(v)
		if !ok {
			return nil, false
		}
	}
	return current, true
}

type migrateConfigCmd struct {
	ConfigFile   string `arg:"" help:"Path to the 2.x config file"`