Add application fallback profile sources

This commit is contained in:
2026-08-01 12:37:01 +00:00
parent 01ca5430bd
commit 9354d2b373
7 changed files with 341 additions and 52 deletions

115
engine.go
View File

@@ -98,9 +98,10 @@ type Config struct {
// It is required unless a WithPromptFS or WithPromptFile option supplies the
// prompt source.
PromptDir string
// ProfileDir is an optional directory whose profiles take precedence over
// embedded built-in profiles. An empty value selects only built-ins unless
// profile options are also supplied.
// ProfileDir is an optional ordinary configured source whose profiles take
// precedence over application fallback and embedded built-in profiles. An
// empty value selects the lower-precedence sources unless a profile-source
// option supplies the ordinary source.
ProfileDir string
// SchemaDir is the root for JSON Schema files. An empty value uses the
// current directory. WithSchemaFS or WithSchemaFile replaces this source.
@@ -119,12 +120,12 @@ type Config struct {
// Option customizes engine construction.
//
// NewEngine applies options in argument order and ignores nil options. Within
// each prompt-source, profile-source, in-memory-profile, schema-source,
// model-client, and artifact-reader category, the last non-nil valid option
// replaces earlier options in that category. WithBackend is the additive
// exception: unique registrations accumulate, and a repeated backend ID is an
// error rather than a replacement. An invalid option fails construction even
// if a later option would replace it.
// each prompt-source, ordinary-profile-source, fallback-profile-source,
// in-memory-profile, schema-source, model-client, and artifact-reader
// category, the last non-nil valid option replaces earlier options in that
// category. WithBackend is the additive exception: unique registrations
// accumulate, and a repeated backend ID is an error rather than a replacement.
// An invalid option fails construction even if a later option would replace it.
type Option interface {
apply(*engineOptions) error
}
@@ -136,18 +137,20 @@ func (f optionFunc) apply(options *engineOptions) error {
}
type engineOptions struct {
llmClient llm.Client
artifactReader artifactadapter.Reader
promptDefs promptdef.Repository
profiles profile.Repository
memoryProfiles profile.Repository
backends []domain.Backend
validator validate.Validator
promptSource bool
profileSource bool
memorySource bool
validatorSource bool
artifactSource bool
llmClient llm.Client
artifactReader artifactadapter.Reader
promptDefs promptdef.Repository
profiles profile.Repository
fallbackProfiles profile.Repository
memoryProfiles profile.Repository
backends []domain.Backend
validator validate.Validator
promptSource bool
profileSource bool
fallbackProfileSource bool
memorySource bool
validatorSource bool
artifactSource bool
}
// WithLLMClient replaces the built-in model client used by [Engine.Run] and
@@ -224,12 +227,12 @@ func WithPromptFile(path string) Option {
// WithProfileFS loads execution profiles from fsys under root.
//
// Profiles from this source overlay built-in profiles. Profile YAML must use
// api_key_env for environment-based credentials; raw API keys are rejected.
// fsys must be non-nil and root must be non-empty; otherwise NewEngine fails
// with ErrInvalidConfig. This option replaces Config.ProfileDir and earlier
// file or FS profile-source options, but remains below WithProfiles in
// precedence.
// Profiles from this ordinary configured source take precedence over
// application fallback and built-in profiles. Profile YAML must use api_key_env
// for environment-based credentials; raw API keys are rejected. fsys must be
// non-nil and root must be non-empty; otherwise NewEngine fails with
// ErrInvalidConfig. This option replaces Config.ProfileDir and earlier file or
// FS profile-source options, but remains below WithProfiles in precedence.
func WithProfileFS(fsys fs.FS, root string) Option {
return optionFunc(func(options *engineOptions) error {
if fsys == nil {
@@ -246,11 +249,12 @@ func WithProfileFS(fsys fs.FS, root string) Option {
// WithProfileFile loads execution profiles from the single profile file at path.
//
// The profile overlays built-in profiles. Profile YAML must use api_key_env for
// environment-based credentials; raw API keys are rejected. path must name an
// existing non-directory file when NewEngine applies the option. This option
// replaces Config.ProfileDir and earlier file or FS profile-source options,
// but remains below WithProfiles in precedence.
// The profile takes precedence over application fallback and built-in profiles.
// Profile YAML must use api_key_env for environment-based credentials; raw API
// keys are rejected. path must name an existing non-directory file when
// NewEngine applies the option. This option replaces Config.ProfileDir and
// earlier file or FS profile-source options, but remains below WithProfiles in
// precedence.
func WithProfileFile(path string) Option {
return optionFunc(func(options *engineOptions) error {
fsys, root, err := fileSource(path)
@@ -263,8 +267,41 @@ func WithProfileFile(path string) Option {
})
}
// WithFallbackProfileFS supplies application-owned fallback profile
// definitions from fsys under root.
//
// Profile lookup checks, in order, profiles supplied by WithProfiles; the
// ordinary configured source selected by WithProfileFile, WithProfileFS, or
// Config.ProfileDir; this fallback source; and Promptkit's embedded built-in
// profiles. Each source supplies a complete profile definition; profile fields
// are not merged between sources. Only an absent profile ID proceeds to the
// next source. A matching read, parse, duplicate, validation, or credential
// format failure stops resolution.
//
// Files use the ordinary strict profile YAML and api_key_env credential rules.
// Loading and validation are lazy: NewEngine validates this option's arguments
// but does not read profile files. fsys must be non-nil and root must be
// nonblank; otherwise NewEngine returns an error matching ErrInvalidConfig.
// Repeating this option replaces the earlier valid fallback source.
//
// This option controls profile-definition lookup, not provider or generation
// failover.
func WithFallbackProfileFS(fsys fs.FS, root string) Option {
return optionFunc(func(options *engineOptions) error {
if fsys == nil {
return ErrInvalidConfig
}
if strings.TrimSpace(root) == "" {
return ErrInvalidConfig
}
options.fallbackProfiles = profile.NewFSRepository(fsys, root)
options.fallbackProfileSource = true
return nil
})
}
// WithProfiles configures in-memory profiles that take precedence over
// configured profile files and built-in profiles.
// ordinary configured, application fallback, and built-in profiles.
//
// NewEngine validates and copies every profile. IDs must be unique within one
// call. An invalid profile, duplicate ID, or unsupported ExtraParams value
@@ -406,6 +443,10 @@ func NewEngine(cfg Config, opts ...Option) (*Engine, error) {
func newProfileRepository(profileDir string, options engineOptions) profile.Repository {
repository := builtin.NewRepository()
if options.fallbackProfileSource {
repository = profile.NewOverlayRepository(options.fallbackProfiles, repository)
}
if options.profileSource {
repository = profile.NewOverlayRepository(options.profiles, repository)
} else if strings.TrimSpace(profileDir) != "" {
@@ -491,10 +532,10 @@ func (e *Engine) InspectPrompt(
//
// InspectProfile trims surrounding whitespace from profileID and looks up the
// resulting nonblank ID exactly and case-sensitively through the engine's
// ordinary in-memory, configured-source, and built-in profile precedence. It
// applies the framework timeout baseline, selected backend, and then selected
// profile to EffectiveModelParams without a request override. BackendID is
// empty for an endpoint-only profile.
// in-memory, ordinary configured-source, application fallback, and built-in
// profile precedence. It applies the framework timeout baseline, selected
// backend, and then selected profile to EffectiveModelParams without a request
// override. BackendID is empty for an endpoint-only profile.
//
// APIKeyEnv in the returned target is an environment-variable name, never its
// value. APIKeyRequired instead reports a direct credential requirement and is