86969739ae
- App-scoped typed Publish/Lookup with duplicate-provider errors - Set plugin IDs before Register so HasPlugin sees the full set - Greeter uses pact.OptionalMessage without importing optional
72 lines
1.4 KiB
Go
72 lines
1.4 KiB
Go
package backpack
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import (
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"fmt"
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"sync"
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"git.golem15.com/golem15/summercms/compass"
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)
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// App is the per-instance application container. It must not import party.
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type App struct {
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Config *compass.Config
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Services *Registry
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mu sync.RWMutex
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plugins map[string]struct{}
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}
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// New returns an App that owns cfg.
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func New(cfg *compass.Config) *App {
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return &App{
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Config: cfg,
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Services: NewRegistry(),
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plugins: make(map[string]struct{}),
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}
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}
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// SetPlugins records the complete activated plugin set. HasPlugin uses this
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// list, including plugins that have not yet Booted.
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func (a *App) SetPlugins(ids []string) {
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if a == nil {
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return
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}
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next := make(map[string]struct{}, len(ids))
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for _, id := range ids {
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if id != "" {
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next[id] = struct{}{}
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}
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}
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a.mu.Lock()
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a.plugins = next
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a.mu.Unlock()
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}
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// HasPlugin reports whether id is in the complete registered set.
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func (a *App) HasPlugin(id string) bool {
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if a == nil {
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return false
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}
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a.mu.RLock()
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defer a.mu.RUnlock()
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_, ok := a.plugins[id]
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return ok
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}
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// Publish stores an app-scoped service under T.
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func (a *App) Publish[T any](value T) error {
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if a == nil || a.Services == nil {
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return fmt.Errorf("backpack: app has no service registry")
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}
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return a.Services.Publish(value)
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}
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// Lookup returns the app-scoped service published under T.
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func (a *App) Lookup[T any]() (T, bool) {
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var zero T
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if a == nil || a.Services == nil {
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return zero, false
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}
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return a.Services.Lookup[T]()
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}
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