valuesource

package

v0.260.0 Latest Latest Go to latest Published: Oct 28, 2026 License: MIT Imports: 4 Imported by: 0

Details

Valid go.mod file
Redistributable license
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Stable version
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Repository

github.com/coilyco/umbra

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Documentation ¶

Overview ¶

Package valuesource is umbra's shared value-resolution layer: a Provider reads a named address at request time, so neither engine imports a store SDK.

Index ¶

func Builtins() map[string]Provider
func Merge(consumer map[string]Provider) map[string]Provider
func Resolve(ctx context.Context, providers map[string]Provider, provider, address string) (string, error)
func ResolveFirst(ctx context.Context, providers map[string]Provider, sources []Source) (string, error)
type Provider
type Source

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func Builtins ¶

func Builtins() map[string]Provider

Builtins are the store-agnostic resolvers umbra ships itself: no SDK, no wiring. A consumer entry of the same name overrides one via Merge.

func Merge ¶

func Merge(consumer map[string]Provider) map[string]Provider

Merge layers the consumer's registry over the built-ins (consumer wins on a clash), always non-nil. A missing provider fails closed in Resolve.

func Resolve ¶

func Resolve(ctx context.Context, providers map[string]Provider, provider, address string) (string, error)

Resolve reads address through the named provider. A missing provider or a resolver error is returned for the caller to wrap; the value is never logged.

func ResolveFirst ¶

func ResolveFirst(ctx context.Context, providers map[string]Provider, sources []Source) (string, error)

ResolveFirst returns the first source resolving to a non-empty value with no error, else a combined error naming each tried source - never a value.

Types ¶

type Provider ¶

type Provider func(ctx context.Context, address string) (string, error)

Provider resolves the value at address for one named value source. A consumer registers store-backed resolvers; the same func type drives both engines.

type Source ¶

type Source struct {
	Provider string
	Address  string
}

Source is one (provider, address) pair: where a value is read and the address the provider interprets. An ordered slice of these is a fallback chain.

Source Files ¶

View all Source files

valuesource.go

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