[performance] update remaining worker pools to use queues (#2865)

* start replacing client + federator + media workers with new worker + queue types

* refactor federatingDB.Delete(), drop queued messages when deleting account / status

* move all queue purging to the processor workers

* undo toolchain updates

* code comments, ensure dereferencer worker pool gets started

* update gruf libraries in readme

* start the job scheduler separately to the worker pools

* reshuffle ordering or server.go + remove duplicate worker start / stop

* update go-list version

* fix vendoring

* move queue invalidation to before wipeing / deletion, to ensure queued work not dropped

* add logging to worker processing functions in testrig, don't start workers in unexpected places

* update go-structr to add (+then rely on) QueueCtx{} type

* ensure more worker pools get started properly in tests

* fix remaining broken tests relying on worker queue logic

* fix account test suite queue popping logic, ensure noop workers do not pull from queue

* move back accidentally shuffled account deletion order

* ensure error (non nil!!) gets passed in refactored federatingDB{}.Delete()

* silently drop deletes from accounts not permitted to

* don't warn log on forwarded deletes

* make if else clauses easier to parse

* use getFederatorMsg()

* improved code comment

* improved code comment re: requesting account delete checks

* remove boolean result from worker start / stop since false = already running or already stopped

* remove optional passed-in http.client

* remove worker starting from the admin CLI commands (we don't need to handle side-effects)

* update prune cli to start scheduler but not all of the workers

* fix rebase issues

* remove redundant return statements

* i'm sorry sir linter

internal/federation/federatingdb/federatingdb_test.go

@@ -19,6 +19,7 @@ package federatingdb_test
 
 import (
 	"context"
+	"time"
 
 	"github.com/stretchr/testify/suite"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
@@ -34,11 +35,10 @@ import (
 
 type FederatingDBTestSuite struct {
 	suite.Suite
-	db            db.DB
-	tc            *typeutils.Converter
-	fromFederator chan messages.FromFediAPI
-	federatingDB  federatingdb.DB
-	state         state.State
+	db           db.DB
+	tc           *typeutils.Converter
+	federatingDB federatingdb.DB
+	state        state.State
 
 	testTokens       map[string]*gtsmodel.Token
 	testClients      map[string]*gtsmodel.Client
@@ -51,6 +51,13 @@ type FederatingDBTestSuite struct {
 	testActivities   map[string]testrig.ActivityWithSignature
 }
 
+func (suite *FederatingDBTestSuite) getFederatorMsg(timeout time.Duration) (*messages.FromFediAPI, bool) {
+	ctx := context.Background()
+	ctx, cncl := context.WithTimeout(ctx, timeout)
+	defer cncl()
+	return suite.state.Workers.Federator.Queue.PopCtx(ctx)
+}
+
 func (suite *FederatingDBTestSuite) SetupSuite() {
 	suite.testTokens = testrig.NewTestTokens()
 	suite.testClients = testrig.NewTestClients()
@@ -69,13 +76,6 @@ func (suite *FederatingDBTestSuite) SetupTest() {
 	suite.state.Caches.Init()
 	testrig.StartNoopWorkers(&suite.state)
 
-	suite.fromFederator = make(chan messages.FromFediAPI, 10)
-	suite.state.Workers.EnqueueFediAPI = func(ctx context.Context, msgs ...messages.FromFediAPI) {
-		for _, msg := range msgs {
-			suite.fromFederator <- msg
-		}
-	}
-
 	suite.db = testrig.NewTestDB(&suite.state)
 
 	suite.testActivities = testrig.NewTestActivities(suite.testAccounts)
@@ -96,13 +96,6 @@ func (suite *FederatingDBTestSuite) SetupTest() {
 func (suite *FederatingDBTestSuite) TearDownTest() {
 	testrig.StandardDBTeardown(suite.db)
 	testrig.StopWorkers(&suite.state)
-	for suite.fromFederator != nil {
-		select {
-		case <-suite.fromFederator:
-		default:
-			return
-		}
-	}
 }
 
 func createTestContext(receivingAccount *gtsmodel.Account, requestingAccount *gtsmodel.Account) context.Context {