Apply CLI overrides to decoded configuration

This commit is contained in:
2026-10-23 21:11:54 +00:00
parent 23f22d8982
commit 041c4cff02
3 changed files with 362 additions and 1 deletions

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@@ -1,6 +1,6 @@
# Sequence Identity And Combination Implementation Plan # Sequence Identity And Combination Implementation Plan
Status: implementation in progress; Stages 1–23 complete. Status: implementation in progress; Stages 1–24 complete.
Audience: a Luna coding agent implementing one numbered stage per prompt, in Audience: a Luna coding agent implementing one numbered stage per prompt, in
order. This plan starts at commit order. This plan starts at commit
@@ -814,6 +814,11 @@ Validation: override, decode, schema, projection, and ownership tests plus the
everyday check. Only the helper is added here; the shared lifecycle does not everyday check. Only the helper is added here; the shared lifecycle does not
switch until its inspection/context support is prepared in Stage 25. switch until its inspection/context support is prepared in Stage 25.
**Completion:** Added private schema-aware post-decode CLI assignment with
detached typed results, canonical projection, updated presence/origins, and
preserved pre-CLI/raw override snapshots. Verified focused override, decode,
schema, projection, and ownership tests plus `./scripts/check.sh`.
## Stage 25 — Prepare Post-Decode CLI Inspection And Effective Context ## Stage 25 — Prepare Post-Decode CLI Inspection And Effective Context
Scope: prepare history, resolution-input, and secret-lookup context handling; Scope: prepare history, resolution-input, and secret-lookup context handling;

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@@ -0,0 +1,220 @@
package engine
import (
"reflect"
"strings"
"gitea.maximumdirect.net/eric/ConfigKit/internal/document"
)
// decodedOverrideResult keeps the typed pre-CLI projection and raw CLI
// contributions alongside the effective typed value and its inspection data.
type decodedOverrideResult struct {
value reflect.Value
preCLI *document.Node
final *document.Node
presence map[string]inputPresence
origins map[string]Origin
overrides []preparedOverride
}
// applyDecodedOverrides assigns prepared CLI values to a detached, decoded
// configuration. Each sparse mapping is decoded against the current typed
// value, preserving omitted mapping fields while replacing supplied sequences.
func applyDecodedOverrides(
schema *schemaDescriptor,
decoded decodedConfiguration,
batch preparedOverrideBatch,
context decodeContext,
) (decodedOverrideResult, []decodeIssue) {
if schema == nil || schema.root == nil || !decoded.value.IsValid() || decoded.value.Type() != schema.root.typeOf || decoded.final == nil {
return decodedOverrideResult{}, []decodeIssue{{code: CodeSchemaUnsupportedType, message: "decoded configuration does not match the schema"}}
}
preCLI := document.Clone(decoded.final)
working, cloneIssue := cloneConfiguration(schema, decoded.value, defaultProjectionLimits())
if cloneIssue != nil {
return decodedOverrideResult{}, []decodeIssue{decodeIssueFromProjection(cloneIssue)}
}
presence := cloneInputPresence(decoded.presence)
origins := cloneOrigins(decoded.origins)
currentProjection := document.Clone(decoded.final)
for _, override := range batch.overrides {
if len(override.path.segments) == 0 {
return decodedOverrideResult{}, []decodeIssue{{code: CodeOverrideInvalidPath, message: "configuration override path is invalid", location: document.Location{SourceID: override.source.ID}}}
}
input, issue := decodedOverrideInput(override)
if issue != nil {
return decodedOverrideResult{}, []decodeIssue{*issue}
}
updated, issues := decodeValue(input, working, schema.root, Path{}, schema, context)
if len(issues) != 0 {
return decodedOverrideResult{}, issues
}
working = updated
location := document.Location{SourceID: override.source.ID}
recordOverrideAncestors(presence, origins, override.path, location)
updateOverridePresence(presence, currentProjection, override.value, override.path, location)
updateOverrideOrigins(origins, currentProjection, override.value, override.path, location)
}
final, projectionIssue := projectConfiguration(schema, working, defaultProjectionLimits())
if projectionIssue != nil {
return decodedOverrideResult{}, []decodeIssue{decodeIssueFromProjection(projectionIssue)}
}
// New fields created by decoding a partial mapping into a previously nil
// pointer have no input origin. Fill those gaps as defaults while retaining
// all surviving source and CLI contributions already in the origin map.
fillDefaultOrigins(final, Path{}, origins)
return decodedOverrideResult{
value: working,
preCLI: preCLI,
final: final,
presence: presence,
origins: origins,
overrides: clonePreparedOverrides(batch.overrides),
}, nil
}
func recordOverrideAncestors(presence map[string]inputPresence, origins map[string]Origin, path Path, location document.Location) {
mergeOverlayOrigin(origins, Path{}, location, LayerCLI)
prefix := Path{}
for index, segment := range path.segments {
prefix = prefix.Key(segment.key)
if index == len(path.segments)-1 {
break
}
pointer := prefix.String()
if _, exists := presence[pointer]; !exists {
presence[pointer] = inputPresence{location: location}
}
mergeOverlayOrigin(origins, prefix, location, LayerCLI)
}
}
func decodedOverrideInput(override preparedOverride) (*document.Node, *decodeIssue) {
location := document.Location{SourceID: override.source.ID}
value := document.Clone(override.value)
if value == nil {
return nil, &decodeIssue{code: CodeOverrideInvalidPath, path: override.path.clone(), message: "configuration override value is invalid", location: location}
}
for index := len(override.path.segments) - 1; index >= 0; index-- {
segment := override.path.segments[index]
if segment.kind == pathSegmentIndex {
return nil, &decodeIssue{code: CodeOverrideInvalidPath, path: override.path.clone(), message: "configuration override path is invalid", location: location}
}
value = &document.Node{
Kind: document.Mapping,
Location: location,
Mapping: []document.Entry{{
Key: segment.key, KeyLocation: location, ValueLocation: location, Value: value,
}},
}
}
return value, nil
}
func cloneInputPresence(input map[string]inputPresence) map[string]inputPresence {
cloned := make(map[string]inputPresence, len(input))
for path, value := range input {
cloned[path] = value
}
return cloned
}
func cloneOrigins(input map[string]Origin) map[string]Origin {
cloned := make(map[string]Origin, len(input))
for path, value := range input {
cloned[path] = cloneOrigin(value)
}
return cloned
}
func clonePreparedOverrides(input []preparedOverride) []preparedOverride {
cloned := make([]preparedOverride, len(input))
for index, value := range input {
cloned[index] = preparedOverride{
path: value.path.clone(),
value: document.Clone(value.value),
source: value.source,
bytes: value.bytes,
nodes: value.nodes,
}
}
return cloned
}
func updateOverridePresence(presence map[string]inputPresence, existing, incoming *document.Node, path Path, location document.Location) {
if existing != nil && existing.Kind == document.Mapping && incoming.Kind == document.Mapping {
if _, exists := presence[path.String()]; !exists {
presence[path.String()] = inputPresence{location: location}
}
var index mappingIndex
for _, entry := range incoming.Mapping {
childPath := path.Key(entry.Key)
position := index.find(existing, entry.Key)
var previous *document.Node
if position >= 0 {
previous = existing.Mapping[position].Value
}
updateOverridePresence(presence, previous, entry.Value, childPath, location)
}
return
}
deletePresencePathSubtree(presence, path)
collectPresence(incoming, path, presence)
}
func deletePresencePathSubtree(presence map[string]inputPresence, path Path) {
pointer := path.String()
for candidate := range presence {
if candidate == pointer || strings.HasPrefix(candidate, pointer+"/") {
delete(presence, candidate)
}
}
}
func updateOverrideOrigins(origins map[string]Origin, existing, incoming *document.Node, path Path, location document.Location) {
if existing != nil && existing.Kind == document.Mapping && incoming.Kind == document.Mapping {
mergeOverlayOrigin(origins, path, location, LayerCLI)
var index mappingIndex
for _, entry := range incoming.Mapping {
childPath := path.Key(entry.Key)
position := index.find(existing, entry.Key)
var previous *document.Node
if position >= 0 {
previous = existing.Mapping[position].Value
}
updateOverrideOrigins(origins, previous, entry.Value, childPath, location)
}
return
}
pointer := path.String()
for candidate := range origins {
if candidate == pointer || strings.HasPrefix(candidate, pointer+"/") {
delete(origins, candidate)
}
}
collectOverlayOrigins(origins, incoming, path, LayerCLI)
}
func fillDefaultOrigins(node *document.Node, path Path, origins map[string]Origin) {
if _, exists := origins[path.String()]; !exists {
origins[path.String()] = Origin{Layer: LayerDefault}
}
switch node.Kind {
case document.Mapping:
for _, entry := range node.Mapping {
fillDefaultOrigins(entry.Value, path.Key(entry.Key), origins)
}
case document.Sequence:
for index, child := range node.Sequence {
fillDefaultOrigins(child, path.Index(index), origins)
}
}
}

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@@ -547,3 +547,139 @@ func fmtLoadError(loadError *LoadError) string {
_ = WriteDiagnostics(&output, loadError.Diagnostics()) _ = WriteDiagnostics(&output, loadError.Diagnostics())
return loadError.Error() + output.String() return loadError.Error() + output.String()
} }
func TestApplyDecodedOverridesUsesSchemaAndPreservesTypedOwnership(t *testing.T) {
t.Parallel()
type child struct {
Name string `yaml:"name"`
Enabled bool `yaml:"enabled"`
}
type config struct {
Nested child `yaml:"nested"`
Labels map[string]child `yaml:"labels"`
Items []child `yaml:"items"`
Empty []string `yaml:"empty"`
Count int `yaml:"count"`
Enabled bool `yaml:"enabled"`
Label string `yaml:"label"`
Small namedSmall `yaml:"small"`
Text validatedText `yaml:"text"`
Delay time.Duration `yaml:"delay"`
APIKey Secret `yaml:"api_key"`
Maybe *string `yaml:"maybe"`
}
defaultMaybe := "default"
defaults := config{
Nested: child{Name: "default", Enabled: true},
Labels: map[string]child{"default": {Name: "default", Enabled: true}},
Items: []child{{Name: "default", Enabled: true}},
Empty: []string{"default"},
Count: 8, Enabled: true, Label: "default", Small: 7, Text: "default", Delay: time.Second,
Maybe: &defaultMaybe,
}
input := parseDocumentForDecode(t, "nested: {name: source, enabled: true}\nlabels: {old: {name: source, enabled: true}}\nitems: [{name: discarded, enabled: true}]\nempty: [source]\ncount: 7\nenabled: true\nlabel: source\nsmall: 3\ntext: source\ndelay: 1s\napi_key: SOURCE_SECRET\nmaybe: source\n")
schema, schemaIssue := buildSchema(reflect.TypeFor[config](), testSecretBinding())
if schemaIssue != nil {
t.Fatalf("buildSchema() issue = %#v", schemaIssue)
}
decoded, decodeIssues := decodeConfiguration(schema, reflect.ValueOf(defaults), input)
if len(decodeIssues) != 0 {
t.Fatalf("decodeConfiguration() issues = %#v", decodeIssues)
}
batch, diagnostics := preparePostStructuralOverrides(overridePreparationInput{root: input}, nil, []Override{
{Path: Keys("nested"), Value: map[string]any{"enabled": false}, Flag: "--nested"},
{Path: Keys("labels"), Value: map[string]any{
"old": map[string]any{"enabled": false}, "new": map[string]any{"name": "cli"},
}, Flag: "--labels"},
{Path: Keys("items"), Value: []any{map[string]any{"name": "replacement"}}, Flag: "--items"},
{Path: Keys("empty"), Value: []any{}, Flag: "--empty"},
{Path: Keys("count"), Value: 0, Flag: "--count"},
{Path: Keys("enabled"), Value: false, Flag: "--enabled"},
{Path: Keys("label"), Value: "", Flag: "--label"},
{Path: Keys("small"), Value: 0, Flag: "--small"},
{Path: Keys("text"), Value: "cli text", Flag: "--text"},
{Path: Keys("delay"), Value: "250ms", Flag: "--delay"},
{Path: Keys("api_key"), Value: "CLI_SECRET", Flag: "--api-key"},
{Path: Keys("maybe"), Value: nil, Flag: "--maybe"},
}, nil, defaultImportLimits())
if len(diagnostics) != 0 {
t.Fatalf("preparePostStructuralOverrides() diagnostics = %#v", diagnostics)
}
result, issues := applyDecodedOverrides(schema, decoded, batch, decodeContext{})
if len(issues) != 0 {
t.Fatalf("applyDecodedOverrides() issues = %#v", issues)
}
got := result.value.Interface().(config)
if got.Nested != (child{Name: "source", Enabled: false}) || !reflect.DeepEqual(got.Labels, map[string]child{
"default": {Name: "default", Enabled: true},
"old": {Name: "source", Enabled: false},
"new": {Name: "cli"},
}) || !reflect.DeepEqual(got.Items, []child{{Name: "replacement"}}) || got.Count != 0 || got.Enabled ||
got.Empty == nil || len(got.Empty) != 0 || got.Label != "" || got.Small != 0 ||
got.Text != "cli text" || got.Delay != 250*time.Millisecond || got.APIKey.name != "CLI_SECRET" || got.Maybe != nil {
t.Fatalf("post-decode configuration = %#v", got)
}
if result.preCLI == result.final || !reflect.DeepEqual(result.preCLI, decoded.final) || len(result.overrides) != len(batch.overrides) {
t.Fatalf("result snapshots/contributions = pre:%p final:%p overrides:%d", result.preCLI, result.final, len(result.overrides))
}
if _, explicit := result.presence["/items/0/enabled"]; explicit {
t.Fatalf("replacement list inherited presence from its discarded item: %#v", result.presence)
}
if result.presence["/items/0/name"].location.SourceID != batch.overrides[2].source.ID ||
result.presence["/nested"].location.SourceID != "source-1" ||
result.origins["/items/0/name"].Layer != LayerCLI || result.origins["/nested/name"].Layer != LayerBase ||
result.origins["/nested/enabled"].Layer != LayerCLI || result.origins["/labels/default/name"].Layer != LayerDefault {
t.Fatalf("presence/origins = %#v / %#v", result.presence, result.origins)
}
if node, ok := documentAtPath(result.final, Keys("items").Index(0).Key("enabled")); !ok || node.Kind != document.Boolean || node.Text != "false" {
t.Fatalf("replacement list default projection = %#v", node)
}
got.Labels["new"] = child{Name: "mutated"}
result.overrides[0].value.Mapping[0].Value.Text = "changed"
if decoded.value.Interface().(config).Labels["old"].Name != "source" || batch.overrides[0].value.Mapping[0].Value.Text != "false" {
t.Fatal("post-decode result mutation reached the pre-CLI value or prepared batch")
}
}
func TestApplyDecodedOverridesRejectsSchemaErrorsWithoutPartialResult(t *testing.T) {
t.Parallel()
type config struct {
Nested struct {
Kept int `yaml:"kept"`
} `yaml:"nested"`
Count int `yaml:"count"`
}
input := parseDocumentForDecode(t, "nested: {kept: 1}\ncount: 2\n")
schema := mustSchemaFor[config](t)
decoded, issues := decodeConfiguration(schema, reflect.ValueOf(config{}), input)
if len(issues) != 0 {
t.Fatalf("decodeConfiguration() issues = %#v", issues)
}
for _, test := range []struct {
name string
override Override
code Code
}{
{name: "unknown nested field", override: Override{Path: Keys("nested"), Value: map[string]any{"unknown": 1}, Flag: "--nested"}, code: CodeDecodeUnknownField},
{name: "invalid type", override: Override{Path: Keys("count"), Value: "not an integer", Flag: "--count"}, code: CodeDecodeType},
} {
t.Run(test.name, func(t *testing.T) {
batch, diagnostics := preparePostStructuralOverrides(overridePreparationInput{root: input}, nil, []Override{test.override}, nil, defaultImportLimits())
if len(diagnostics) != 0 {
t.Fatalf("preparePostStructuralOverrides() diagnostics = %#v", diagnostics)
}
result, issues := applyDecodedOverrides(schema, decoded, batch, decodeContext{})
if len(issues) == 0 || issues[0].code != test.code {
t.Fatalf("decode issues = %#v, want code %q", issues, test.code)
}
if result.value.IsValid() || result.final != nil {
t.Fatalf("failed assignment returned a partial result: %#v", result)
}
original := decoded.value.Interface().(config)
if original.Count != 2 || original.Nested.Kept != 1 {
t.Fatal("failed assignment mutated the pre-CLI decoded value")
}
})
}
}