1 // Copyright (C) The Arvados Authors. All rights reserved.
3 // SPDX-License-Identifier: AGPL-3.0
18 "git.curoverse.com/arvados.git/sdk/go/arvados"
19 "github.com/ghodss/yaml"
20 "github.com/imdario/mergo"
21 "github.com/sirupsen/logrus"
26 Logger logrus.FieldLogger
35 func NewLoader(stdin io.Reader, logger logrus.FieldLogger) *Loader {
36 ldr := &Loader{Stdin: stdin, Logger: logger}
37 ldr.SetupFlags(flag.NewFlagSet("", flag.ContinueOnError))
42 // SetupFlags configures a flagset so arguments like -config X can be
43 // used to change the loader's Path fields.
45 // ldr := NewLoader(os.Stdin, logrus.New())
46 // flagset := flag.NewFlagSet("", flag.ContinueOnError)
47 // ldr.SetupFlags(flagset)
48 // // ldr.Path == "/etc/arvados/config.yml"
49 // flagset.Parse([]string{"-config", "/tmp/c.yaml"})
50 // // ldr.Path == "/tmp/c.yaml"
51 func (ldr *Loader) SetupFlags(flagset *flag.FlagSet) {
52 flagset.StringVar(&ldr.Path, "config", arvados.DefaultConfigFile, "Site configuration `file`")
53 flagset.StringVar(&ldr.KeepstorePath, "legacy-keepstore-config", defaultKeepstoreConfigPath, "Legacy keepstore configuration `file`")
56 func (ldr *Loader) loadBytes(path string) ([]byte, error) {
58 return ioutil.ReadAll(ldr.Stdin)
60 f, err := os.Open(path)
65 return ioutil.ReadAll(f)
68 func (ldr *Loader) Load() (*arvados.Config, error) {
69 if ldr.configdata == nil {
70 buf, err := ldr.loadBytes(ldr.Path)
77 // Load the config into a dummy map to get the cluster ID
78 // keys, discarding the values; then set up defaults for each
79 // cluster ID; then load the real config on top of the
82 Clusters map[string]struct{}
84 err := yaml.Unmarshal(ldr.configdata, &dummy)
88 if len(dummy.Clusters) == 0 {
89 return nil, errors.New("config does not define any clusters")
92 // We can't merge deep structs here; instead, we unmarshal the
93 // default & loaded config files into generic maps, merge
94 // those, and then json-encode+decode the result into the
95 // config struct type.
96 var merged map[string]interface{}
97 for id := range dummy.Clusters {
98 var src map[string]interface{}
99 err = yaml.Unmarshal(bytes.Replace(DefaultYAML, []byte(" xxxxx:"), []byte(" "+id+":"), -1), &src)
101 return nil, fmt.Errorf("loading defaults for %s: %s", id, err)
103 err = mergo.Merge(&merged, src, mergo.WithOverride)
105 return nil, fmt.Errorf("merging defaults for %s: %s", id, err)
108 var src map[string]interface{}
109 err = yaml.Unmarshal(ldr.configdata, &src)
111 return nil, fmt.Errorf("loading config data: %s", err)
113 ldr.logExtraKeys(merged, src, "")
114 removeSampleKeys(merged)
115 err = mergo.Merge(&merged, src, mergo.WithOverride)
117 return nil, fmt.Errorf("merging config data: %s", err)
120 // map[string]interface{} => json => arvados.Config
121 var cfg arvados.Config
125 errEnc = json.NewEncoder(pw).Encode(merged)
128 err = json.NewDecoder(pr).Decode(&cfg)
133 return nil, fmt.Errorf("transcoding config data: %s", err)
136 if !ldr.SkipDeprecated {
137 err = ldr.applyDeprecatedConfig(&cfg)
141 for _, err := range []error{
142 ldr.loadOldKeepstoreConfig(&cfg),
150 // Check for known mistakes
151 for id, cc := range cfg.Clusters {
152 err = checkKeyConflict(fmt.Sprintf("Clusters.%s.PostgreSQL.Connection", id), cc.PostgreSQL.Connection)
160 func checkKeyConflict(label string, m map[string]string) error {
161 saw := map[string]bool{}
163 k = strings.ToLower(k)
165 return fmt.Errorf("%s: multiple entries for %q (fix by using same capitalization as default/example file)", label, k)
172 func removeSampleKeys(m map[string]interface{}) {
174 for _, v := range m {
175 if v, _ := v.(map[string]interface{}); v != nil {
181 func (ldr *Loader) logExtraKeys(expected, supplied map[string]interface{}, prefix string) {
182 if ldr.Logger == nil {
185 allowed := map[string]interface{}{}
186 for k, v := range expected {
187 allowed[strings.ToLower(k)] = v
189 for k, vsupp := range supplied {
190 vexp, ok := allowed[strings.ToLower(k)]
191 if !ok && expected["SAMPLE"] != nil {
192 vexp = expected["SAMPLE"]
194 ldr.Logger.Warnf("deprecated or unknown config entry: %s%s", prefix, k)
197 if vsupp, ok := vsupp.(map[string]interface{}); !ok {
198 // if vsupp is a map but vexp isn't map, this
199 // will be caught elsewhere; see TestBadType.
201 } else if vexp, ok := vexp.(map[string]interface{}); !ok {
202 ldr.Logger.Warnf("unexpected object in config entry: %s%s", prefix, k)
204 ldr.logExtraKeys(vexp, vsupp, prefix+k+".")