1 // Copyright (C) The Arvados Authors. All rights reserved.
3 // SPDX-License-Identifier: AGPL-3.0
16 "git.curoverse.com/arvados.git/sdk/go/arvados"
17 "github.com/ghodss/yaml"
18 "github.com/imdario/mergo"
21 type logger interface {
22 Warnf(string, ...interface{})
25 func LoadFile(path string, log logger) (*arvados.Config, error) {
26 f, err := os.Open(path)
34 func Load(rdr io.Reader, log logger) (*arvados.Config, error) {
35 buf, err := ioutil.ReadAll(rdr)
40 // Load the config into a dummy map to get the cluster ID
41 // keys, discarding the values; then set up defaults for each
42 // cluster ID; then load the real config on top of the
45 Clusters map[string]struct{}
47 err = yaml.Unmarshal(buf, &dummy)
51 if len(dummy.Clusters) == 0 {
52 return nil, errors.New("config does not define any clusters")
55 // We can't merge deep structs here; instead, we unmarshal the
56 // default & loaded config files into generic maps, merge
57 // those, and then json-encode+decode the result into the
58 // config struct type.
59 var merged map[string]interface{}
60 for id := range dummy.Clusters {
61 var src map[string]interface{}
62 err = yaml.Unmarshal(bytes.Replace(DefaultYAML, []byte(" xxxxx:"), []byte(" "+id+":"), -1), &src)
64 return nil, fmt.Errorf("loading defaults for %s: %s", id, err)
66 err = mergo.Merge(&merged, src, mergo.WithOverride)
68 return nil, fmt.Errorf("merging defaults for %s: %s", id, err)
71 var src map[string]interface{}
72 err = yaml.Unmarshal(buf, &src)
74 return nil, fmt.Errorf("loading config data: %s", err)
76 err = mergo.Merge(&merged, src, mergo.WithOverride)
78 return nil, fmt.Errorf("merging config data: %s", err)
81 // map[string]interface{} => json => arvados.Config
82 var cfg arvados.Config
86 errEnc = json.NewEncoder(pw).Encode(merged)
89 err = json.NewDecoder(pr).Decode(&cfg)
94 return nil, fmt.Errorf("transcoding config data: %s", err)
97 err = applyDeprecatedConfig(&cfg, buf, log)