cada7a4442
- lighthouse: Service/From with realtime.driver selection, RegisterDriver registry, null/log/memory drivers, Route/Surface/Mount, users and actors - centrifugo: HTTP API client (apikey header, 2xx success, no request without a key), five-generator HS256 TokenIssuer, TokenHandler with the WinterCMS 401/503 bodies - module README and root modules table row
72 lines
1.8 KiB
Go
72 lines
1.8 KiB
Go
package lighthouse
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import (
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"context"
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"git.golem15.com/golem15/summercms/modules/bouncer"
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)
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// User is the identity a realtime driver needs: the id and display name.
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type User struct {
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ID uint
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Name *string
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}
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// UserLookup loads a user by id. found is false when no such user exists.
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type UserLookup func(ctx context.Context, id uint) (user User, found bool, err error)
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// SetUserLookup installs the application's user lookup.
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func (s *Service) SetUserLookup(fn UserLookup) {
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if s == nil {
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return
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}
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s.mu.Lock()
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s.lookup = fn
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s.mu.Unlock()
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}
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// User loads user id through the installed lookup. Without a lookup it
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// returns User{ID: id} with a nil Name and found true.
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func (s *Service) User(ctx context.Context, id uint) (User, bool, error) {
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if s == nil {
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return User{ID: id}, true, nil
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}
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s.mu.RLock()
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fn := s.lookup
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s.mu.RUnlock()
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if fn == nil {
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return User{ID: id}, true, nil
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}
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return fn(ctx, id)
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}
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// Actor is who caused a broadcast. It marshals as {"user_id":…,"name":…}.
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type Actor struct {
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UserID *uint `json:"user_id"`
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Name *string `json:"name"`
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}
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// SystemActor is the actor of writes made without a signed-in user:
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// {"user_id":null,"name":"System"}.
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func SystemActor() Actor {
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name := "System"
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return Actor{Name: &name}
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}
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// Actor returns the actor of the request in ctx. No principal, or a
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// backend-admin principal, gives SystemActor: the WinterCMS frontend user is
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// empty in backend requests. Otherwise it is the principal's id and the
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// looked-up name (nil when the lookup fails or finds nothing).
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func (s *Service) Actor(ctx context.Context) Actor {
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p, ok := bouncer.User(ctx)
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if !ok || p == nil || p.Backend {
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return SystemActor()
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}
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id := p.ID
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a := Actor{UserID: &id}
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if u, found, err := s.User(ctx, id); err == nil && found {
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a.Name = u.Name
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}
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return a
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}
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