replace async client API / federator msg processing with worker pools (#497)

* replace async client API / federator msg processing with worker pools
* appease our lord-and-saviour, the linter

internal/processing/admin/accountaction.go

@@ -34,12 +34,12 @@ func (p *processor) AccountAction(ctx context.Context, account *gtsmodel.Account
 	case string(gtsmodel.AdminActionSuspend):
 		adminAction.Type = gtsmodel.AdminActionSuspend
 		// pass the account delete through the client api channel for processing
-		p.fromClientAPI <- messages.FromClientAPI{
+		p.clientWorker.Queue(messages.FromClientAPI{
 			APObjectType:   ap.ActorPerson,
 			APActivityType: ap.ActivityDelete,
 			OriginAccount:  account,
 			TargetAccount:  targetAccount,
-		}
+		})
 	default:
 		return gtserror.NewErrorBadRequest(fmt.Errorf("admin action type %s is not supported for this endpoint", form.Type))
 	}

internal/processing/admin/admin.go

@@ -29,6 +29,7 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/media"
 	"github.com/superseriousbusiness/gotosocial/internal/messages"
 	"github.com/superseriousbusiness/gotosocial/internal/typeutils"
+	"github.com/superseriousbusiness/gotosocial/internal/worker"
 )
 
 // Processor wraps a bunch of functions for processing admin actions.
@@ -43,18 +44,18 @@ type Processor interface {
 }
 
 type processor struct {
-	tc            typeutils.TypeConverter
-	mediaManager  media.Manager
-	fromClientAPI chan messages.FromClientAPI
-	db            db.DB
+	tc           typeutils.TypeConverter
+	mediaManager media.Manager
+	clientWorker *worker.Worker[messages.FromClientAPI]
+	db           db.DB
 }
 
 // New returns a new admin processor.
-func New(db db.DB, tc typeutils.TypeConverter, mediaManager media.Manager, fromClientAPI chan messages.FromClientAPI) Processor {
+func New(db db.DB, tc typeutils.TypeConverter, mediaManager media.Manager, clientWorker *worker.Worker[messages.FromClientAPI]) Processor {
 	return &processor{
-		tc:            tc,
-		mediaManager:  mediaManager,
-		fromClientAPI: fromClientAPI,
-		db:            db,
+		tc:           tc,
+		mediaManager: mediaManager,
+		clientWorker: clientWorker,
+		db:           db,
 	}
 }

internal/processing/admin/createdomainblock.go

@@ -141,13 +141,13 @@ selectAccountsLoop:
 			l.Debugf("putting delete for account %s in the clientAPI channel", a.Username)
 
 			// pass the account delete through the client api channel for processing
-			p.fromClientAPI <- messages.FromClientAPI{
+			p.clientWorker.Queue(messages.FromClientAPI{
 				APObjectType:   ap.ActorPerson,
 				APActivityType: ap.ActivityDelete,
 				GTSModel:       block,
 				OriginAccount:  account,
 				TargetAccount:  a,
-			}
+			})
 
 			// if this is the last account in the slice, set the maxID appropriately for the next query
 			if i == len(accounts)-1 {