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Fill a preference's ${setting:} from its manifest default (hq ADR 0262)

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Without a default, a running module could never gain a setting: the file asking for it
failed to compose until set, and the key was refused as stray until a file asked for it.
Defaults sit under the mesh's and the node's settings, never merge into a JSON file, are
refused for the operator's own values, and settings shows each value's source.
This commit is contained in:
jochen
2026-10-08 17:24:32 +02:00
parent 3f68a495f1
commit e41b78cd77
11 changed files with 470 additions and 13 deletions
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internal/catalogue/setting_into.go
+8 -3
View File
@@ -40,8 +40,9 @@ func settingsUsed(content string) []string {
// settingInto fills a file's ${setting:…} placeholders from the layers over a module.
//
// The last layer setting a key wins, which is the node's over the mesh's — the same order settle
// applies to a mergeable file. A value that is not a string is written the way a program would read
// The last layer setting a key wins, which is the node's over the mesh's over the module's own
// default (novox/hq ADR 0262) — the same order settle applies to a mergeable file. The caller lays
// the defaults under the layers with WithDefaults. A value that is not a string is written the way a program would read
// it (a number without a trailing .000000, a boolean as true/false).
func settingInto(resource map[string]any, layers []Layer, module string) error {
if fmt.Sprint(resource["type"]) != "file" {
@@ -56,7 +57,8 @@ func settingInto(resource map[string]any, layers []Layer, module string) error {
if !set {
return fmt.Errorf(
"%s has a file that says ${setting:%s}, and nothing sets %q for it — an operator's "+
"value is the assignment's, never the definition's (novox/hq ADR 0112): "+
"value is the assignment's, never the definition's (novox/hq ADR 0112), and only a "+
"preference has a default in the definition (ADR 0262): "+
"`settings set %s <file>` with {%q: …}%s",
module, key, key, module, key, orNoSettings(layers))
}
@@ -80,6 +82,9 @@ func settingValue(layers []Layer, key string) (any, bool) {
func orNoSettings(layers []Layer) string {
var keys []string
for _, l := range layers {
if l.From == DefaultLayer {
continue
}
for k := range l.Values {
keys = append(keys, k)
}