- Removed double imports (#1989)

- Lower cased error messages

Signed-off-by: Ryan Whittington <twentybitdev@gmail.com>

Co-authored-by: kegsay <kegan@matrix.org>

38 files changed, 162 insertions, 177 deletions

diff --git a/build/gobind-pinecone/monolith.go b/build/gobind-pinecone/monolith.go
index 20228404..310e3a04 100644
--- a/build/gobind-pinecone/monolith.go
+++ b/build/gobind-pinecone/monolith.go
@@ -40,7 +40,6 @@ import (
 	"golang.org/x/net/http2/h2c"
 
 	pineconeMulticast "github.com/matrix-org/pinecone/multicast"
-	"github.com/matrix-org/pinecone/router"
 	pineconeRouter "github.com/matrix-org/pinecone/router"
 	pineconeSessions "github.com/matrix-org/pinecone/sessions"
 	"github.com/matrix-org/pinecone/types"
@@ -196,7 +195,7 @@ func (m *DendriteMonolith) RegisterDevice(localpart, deviceID string) (string, e
 
 func (m *DendriteMonolith) staticPeerConnect() {
 	attempt := func() {
-		if m.PineconeRouter.PeerCount(router.PeerTypeRemote) == 0 {
+		if m.PineconeRouter.PeerCount(pineconeRouter.PeerTypeRemote) == 0 {
 			m.staticPeerMutex.RLock()
 			uri := m.staticPeerURI
 			m.staticPeerMutex.RUnlock()
diff --git a/clientapi/httputil/parse.go b/clientapi/httputil/parse.go
index ee603341..c8358334 100644
--- a/clientapi/httputil/parse.go
+++ b/clientapi/httputil/parse.go
@@ -32,7 +32,7 @@ func ParseTSParam(req *http.Request) (time.Time, error) {
 	// The parameter exists, parse into a Time object
 	ts, err := strconv.ParseInt(tsStr, 10, 64)
 	if err != nil {
-		return time.Time{}, fmt.Errorf("Param 'ts' is no valid int (%s)", err.Error())
+		return time.Time{}, fmt.Errorf("param 'ts' is no valid int (%s)", err.Error())
 	}
 
 	return time.Unix(ts/1000, 0), nil
diff --git a/clientapi/routing/device.go b/clientapi/routing/device.go
index 6adaa769..9f54a625 100644
--- a/clientapi/routing/device.go
+++ b/clientapi/routing/device.go
@@ -23,7 +23,6 @@ import (
 	"github.com/matrix-org/dendrite/clientapi/httputil"
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	"github.com/matrix-org/dendrite/userapi/api"
-	userapi "github.com/matrix-org/dendrite/userapi/api"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
 )
@@ -50,18 +49,18 @@ type devicesDeleteJSON struct {
 
 // GetDeviceByID handles /devices/{deviceID}
 func GetDeviceByID(
-	req *http.Request, userAPI userapi.UserInternalAPI, device *api.Device,
+	req *http.Request, userAPI api.UserInternalAPI, device *api.Device,
 	deviceID string,
 ) util.JSONResponse {
-	var queryRes userapi.QueryDevicesResponse
-	err := userAPI.QueryDevices(req.Context(), &userapi.QueryDevicesRequest{
+	var queryRes api.QueryDevicesResponse
+	err := userAPI.QueryDevices(req.Context(), &api.QueryDevicesRequest{
 		UserID: device.UserID,
 	}, &queryRes)
 	if err != nil {
 		util.GetLogger(req.Context()).WithError(err).Error("QueryDevices failed")
 		return jsonerror.InternalServerError()
 	}
-	var targetDevice *userapi.Device
+	var targetDevice *api.Device
 	for _, device := range queryRes.Devices {
 		if device.ID == deviceID {
 			targetDevice = &device
@@ -88,10 +87,10 @@ func GetDeviceByID(
 
 // GetDevicesByLocalpart handles /devices
 func GetDevicesByLocalpart(
-	req *http.Request, userAPI userapi.UserInternalAPI, device *api.Device,
+	req *http.Request, userAPI api.UserInternalAPI, device *api.Device,
 ) util.JSONResponse {
-	var queryRes userapi.QueryDevicesResponse
-	err := userAPI.QueryDevices(req.Context(), &userapi.QueryDevicesRequest{
+	var queryRes api.QueryDevicesResponse
+	err := userAPI.QueryDevices(req.Context(), &api.QueryDevicesRequest{
 		UserID: device.UserID,
 	}, &queryRes)
 	if err != nil {
diff --git a/clientapi/routing/directory.go b/clientapi/routing/directory.go
index ae466065..96cb0262 100644
--- a/clientapi/routing/directory.go
+++ b/clientapi/routing/directory.go
@@ -23,7 +23,6 @@ import (
 	federationSenderAPI "github.com/matrix-org/dendrite/federationsender/api"
 	roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/dendrite/setup/config"
-	"github.com/matrix-org/dendrite/userapi/api"
 	userapi "github.com/matrix-org/dendrite/userapi/api"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
@@ -115,7 +114,7 @@ func DirectoryRoom(
 // SetLocalAlias implements PUT /directory/room/{roomAlias}
 func SetLocalAlias(
 	req *http.Request,
-	device *api.Device,
+	device *userapi.Device,
 	alias string,
 	cfg *config.ClientAPI,
 	rsAPI roomserverAPI.RoomserverInternalAPI,
@@ -192,7 +191,7 @@ func SetLocalAlias(
 // RemoveLocalAlias implements DELETE /directory/room/{roomAlias}
 func RemoveLocalAlias(
 	req *http.Request,
-	device *api.Device,
+	device *userapi.Device,
 	alias string,
 	rsAPI roomserverAPI.RoomserverInternalAPI,
 ) util.JSONResponse {
diff --git a/clientapi/routing/logout.go b/clientapi/routing/logout.go
index cb300e9f..cfbb6f9f 100644
--- a/clientapi/routing/logout.go
+++ b/clientapi/routing/logout.go
@@ -19,16 +19,15 @@ import (
 
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	"github.com/matrix-org/dendrite/userapi/api"
-	userapi "github.com/matrix-org/dendrite/userapi/api"
 	"github.com/matrix-org/util"
 )
 
 // Logout handles POST /logout
 func Logout(
-	req *http.Request, userAPI userapi.UserInternalAPI, device *api.Device,
+	req *http.Request, userAPI api.UserInternalAPI, device *api.Device,
 ) util.JSONResponse {
-	var performRes userapi.PerformDeviceDeletionResponse
-	err := userAPI.PerformDeviceDeletion(req.Context(), &userapi.PerformDeviceDeletionRequest{
+	var performRes api.PerformDeviceDeletionResponse
+	err := userAPI.PerformDeviceDeletion(req.Context(), &api.PerformDeviceDeletionRequest{
 		UserID:    device.UserID,
 		DeviceIDs: []string{device.ID},
 	}, &performRes)
@@ -45,10 +44,10 @@ func Logout(
 
 // LogoutAll handles POST /logout/all
 func LogoutAll(
-	req *http.Request, userAPI userapi.UserInternalAPI, device *api.Device,
+	req *http.Request, userAPI api.UserInternalAPI, device *api.Device,
 ) util.JSONResponse {
-	var performRes userapi.PerformDeviceDeletionResponse
-	err := userAPI.PerformDeviceDeletion(req.Context(), &userapi.PerformDeviceDeletionRequest{
+	var performRes api.PerformDeviceDeletionResponse
+	err := userAPI.PerformDeviceDeletion(req.Context(), &api.PerformDeviceDeletionRequest{
 		UserID:    device.UserID,
 		DeviceIDs: nil,
 	}, &performRes)
diff --git a/clientapi/routing/membership.go b/clientapi/routing/membership.go
index b85cfde0..33fb3883 100644
--- a/clientapi/routing/membership.go
+++ b/clientapi/routing/membership.go
@@ -26,7 +26,6 @@ import (
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	"github.com/matrix-org/dendrite/clientapi/threepid"
 	"github.com/matrix-org/dendrite/internal/eventutil"
-	"github.com/matrix-org/dendrite/roomserver/api"
 	roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/dendrite/setup/config"
 	userapi "github.com/matrix-org/dendrite/userapi/api"
@@ -107,7 +106,7 @@ func sendMembership(ctx context.Context, accountDB accounts.Database, device *us
 
 	if err = roomserverAPI.SendEvents(
 		ctx, rsAPI,
-		api.KindNew,
+		roomserverAPI.KindNew,
 		[]*gomatrixserverlib.HeaderedEvent{event.Event.Headered(roomVer)},
 		cfg.Matrix.ServerName,
 		nil,
@@ -328,11 +327,11 @@ func loadProfile(
 	return profile, err
 }
 
-func extractRequestData(req *http.Request, roomID string, rsAPI api.RoomserverInternalAPI) (
+func extractRequestData(req *http.Request, roomID string, rsAPI roomserverAPI.RoomserverInternalAPI) (
 	body *threepid.MembershipRequest, evTime time.Time, roomVer gomatrixserverlib.RoomVersion, resErr *util.JSONResponse,
 ) {
-	verReq := api.QueryRoomVersionForRoomRequest{RoomID: roomID}
-	verRes := api.QueryRoomVersionForRoomResponse{}
+	verReq := roomserverAPI.QueryRoomVersionForRoomRequest{RoomID: roomID}
+	verRes := roomserverAPI.QueryRoomVersionForRoomResponse{}
 	if err := rsAPI.QueryRoomVersionForRoom(req.Context(), &verReq, &verRes); err != nil {
 		resErr = &util.JSONResponse{
 			Code: http.StatusBadRequest,
@@ -402,13 +401,13 @@ func checkAndProcessThreepid(
 	return
 }
 
-func checkMemberInRoom(ctx context.Context, rsAPI api.RoomserverInternalAPI, userID, roomID string) *util.JSONResponse {
+func checkMemberInRoom(ctx context.Context, rsAPI roomserverAPI.RoomserverInternalAPI, userID, roomID string) *util.JSONResponse {
 	tuple := gomatrixserverlib.StateKeyTuple{
 		EventType: gomatrixserverlib.MRoomMember,
 		StateKey:  userID,
 	}
-	var membershipRes api.QueryCurrentStateResponse
-	err := rsAPI.QueryCurrentState(ctx, &api.QueryCurrentStateRequest{
+	var membershipRes roomserverAPI.QueryCurrentStateResponse
+	err := rsAPI.QueryCurrentState(ctx, &roomserverAPI.QueryCurrentStateRequest{
 		RoomID:      roomID,
 		StateTuples: []gomatrixserverlib.StateKeyTuple{tuple},
 	}, &membershipRes)
@@ -445,8 +444,8 @@ func SendForget(
 ) util.JSONResponse {
 	ctx := req.Context()
 	logger := util.GetLogger(ctx).WithField("roomID", roomID).WithField("userID", device.UserID)
-	var membershipRes api.QueryMembershipForUserResponse
-	membershipReq := api.QueryMembershipForUserRequest{
+	var membershipRes roomserverAPI.QueryMembershipForUserResponse
+	membershipReq := roomserverAPI.QueryMembershipForUserRequest{
 		RoomID: roomID,
 		UserID: device.UserID,
 	}
@@ -468,11 +467,11 @@ func SendForget(
 		}
 	}
 
-	request := api.PerformForgetRequest{
+	request := roomserverAPI.PerformForgetRequest{
 		RoomID: roomID,
 		UserID: device.UserID,
 	}
-	response := api.PerformForgetResponse{}
+	response := roomserverAPI.PerformForgetResponse{}
 	if err := rsAPI.PerformForget(ctx, &request, &response); err != nil {
 		logger.WithError(err).Error("PerformForget: unable to forget room")
 		return jsonerror.InternalServerError()
diff --git a/clientapi/routing/password.go b/clientapi/routing/password.go
index 87d5f8ff..b2442443 100644
--- a/clientapi/routing/password.go
+++ b/clientapi/routing/password.go
@@ -9,7 +9,6 @@ import (
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	"github.com/matrix-org/dendrite/setup/config"
 	"github.com/matrix-org/dendrite/userapi/api"
-	userapi "github.com/matrix-org/dendrite/userapi/api"
 	"github.com/matrix-org/dendrite/userapi/storage/accounts"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
@@ -29,7 +28,7 @@ type newPasswordAuth struct {
 
 func Password(
 	req *http.Request,
-	userAPI userapi.UserInternalAPI,
+	userAPI api.UserInternalAPI,
 	accountDB accounts.Database,
 	device *api.Device,
 	cfg *config.ClientAPI,
@@ -90,11 +89,11 @@ func Password(
 	}
 
 	// Ask the user API to perform the password change.
-	passwordReq := &userapi.PerformPasswordUpdateRequest{
+	passwordReq := &api.PerformPasswordUpdateRequest{
 		Localpart: localpart,
 		Password:  r.NewPassword,
 	}
-	passwordRes := &userapi.PerformPasswordUpdateResponse{}
+	passwordRes := &api.PerformPasswordUpdateResponse{}
 	if err := userAPI.PerformPasswordUpdate(req.Context(), passwordReq, passwordRes); err != nil {
 		util.GetLogger(req.Context()).WithError(err).Error("PerformPasswordUpdate failed")
 		return jsonerror.InternalServerError()
@@ -107,12 +106,12 @@ func Password(
 	// If the request asks us to log out all other devices then
 	// ask the user API to do that.
 	if r.LogoutDevices {
-		logoutReq := &userapi.PerformDeviceDeletionRequest{
+		logoutReq := &api.PerformDeviceDeletionRequest{
 			UserID:         device.UserID,
 			DeviceIDs:      nil,
 			ExceptDeviceID: device.ID,
 		}
-		logoutRes := &userapi.PerformDeviceDeletionResponse{}
+		logoutRes := &api.PerformDeviceDeletionResponse{}
 		if err := userAPI.PerformDeviceDeletion(req.Context(), logoutReq, logoutRes); err != nil {
 			util.GetLogger(req.Context()).WithError(err).Error("PerformDeviceDeletion failed")
 			return jsonerror.InternalServerError()
diff --git a/clientapi/routing/redaction.go b/clientapi/routing/redaction.go
index 92375974..c25ca4ef 100644
--- a/clientapi/routing/redaction.go
+++ b/clientapi/routing/redaction.go
@@ -22,7 +22,6 @@ import (
 	"github.com/matrix-org/dendrite/clientapi/httputil"
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	"github.com/matrix-org/dendrite/internal/eventutil"
-	"github.com/matrix-org/dendrite/roomserver/api"
 	roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/dendrite/setup/config"
 	userapi "github.com/matrix-org/dendrite/userapi/api"
@@ -113,7 +112,7 @@ func SendRedaction(
 		return jsonerror.InternalServerError()
 	}
 
-	var queryRes api.QueryLatestEventsAndStateResponse
+	var queryRes roomserverAPI.QueryLatestEventsAndStateResponse
 	e, err := eventutil.QueryAndBuildEvent(req.Context(), &builder, cfg.Matrix, time.Now(), rsAPI, &queryRes)
 	if err == eventutil.ErrRoomNoExists {
 		return util.JSONResponse{
@@ -121,7 +120,7 @@ func SendRedaction(
 			JSON: jsonerror.NotFound("Room does not exist"),
 		}
 	}
-	if err = roomserverAPI.SendEvents(context.Background(), rsAPI, api.KindNew, []*gomatrixserverlib.HeaderedEvent{e}, cfg.Matrix.ServerName, nil); err != nil {
+	if err = roomserverAPI.SendEvents(context.Background(), rsAPI, roomserverAPI.KindNew, []*gomatrixserverlib.HeaderedEvent{e}, cfg.Matrix.ServerName, nil); err != nil {
 		util.GetLogger(req.Context()).WithError(err).Errorf("failed to SendEvents")
 		return jsonerror.InternalServerError()
 	}
diff --git a/clientapi/routing/register_secret.go b/clientapi/routing/register_secret.go
index f0436e32..1a974b77 100644
--- a/clientapi/routing/register_secret.go
+++ b/clientapi/routing/register_secret.go
@@ -68,18 +68,18 @@ func (r *SharedSecretRegistration) IsValidMacLogin(
 ) (bool, error) {
 	// Check that shared secret registration isn't disabled.
 	if r.sharedSecret == "" {
-		return false, errors.New("Shared secret registration is disabled")
+		return false, errors.New("shared secret registration is disabled")
 	}
 	if !r.validNonce(nonce) {
-		return false, fmt.Errorf("Incorrect or expired nonce: %s", nonce)
+		return false, fmt.Errorf("incorrect or expired nonce: %s", nonce)
 	}
 
 	// Check that username/password don't contain the HMAC delimiters.
 	if strings.Contains(username, "\x00") {
-		return false, errors.New("Username contains invalid character")
+		return false, errors.New("username contains invalid character")
 	}
 	if strings.Contains(password, "\x00") {
-		return false, errors.New("Password contains invalid character")
+		return false, errors.New("password contains invalid character")
 	}
 
 	adminString := "notadmin"
diff --git a/clientapi/threepid/threepid.go b/clientapi/threepid/threepid.go
index 2f817ef4..1e64e303 100644
--- a/clientapi/threepid/threepid.go
+++ b/clientapi/threepid/threepid.go
@@ -81,7 +81,7 @@ func CreateSession(
 
 	// Error if the status isn't OK
 	if resp.StatusCode != http.StatusOK {
-		return "", fmt.Errorf("Could not create a session on the server %s", req.IDServer)
+		return "", fmt.Errorf("could not create a session on the server %s", req.IDServer)
 	}
 
 	// Extract the SID from the response and return it
@@ -168,7 +168,7 @@ func PublishAssociation(creds Credentials, userID string, cfg *config.ClientAPI)
 
 	// Error if the status isn't OK
 	if resp.StatusCode != http.StatusOK {
-		return fmt.Errorf("Could not publish the association on the server %s", creds.IDServer)
+		return fmt.Errorf("could not publish the association on the server %s", creds.IDServer)
 	}
 
 	return nil
diff --git a/clientapi/userutil/userutil.go b/clientapi/userutil/userutil.go
index 4cea3c18..7e909ffa 100644
--- a/clientapi/userutil/userutil.go
+++ b/clientapi/userutil/userutil.go
@@ -31,11 +31,11 @@ func ParseUsernameParam(usernameParam string, expectedServerName *gomatrixserver
 		lp, domain, err := gomatrixserverlib.SplitID('@', usernameParam)
 
 		if err != nil {
-			return "", errors.New("Invalid username")
+			return "", errors.New("invalid username")
 		}
 
 		if expectedServerName != nil && domain != *expectedServerName {
-			return "", errors.New("User ID does not belong to this server")
+			return "", errors.New("user ID does not belong to this server")
 		}
 
 		localpart = lp
diff --git a/cmd/dendrite-demo-pinecone/main.go b/cmd/dendrite-demo-pinecone/main.go
index 1933c5ad..e919e749 100644
--- a/cmd/dendrite-demo-pinecone/main.go
+++ b/cmd/dendrite-demo-pinecone/main.go
@@ -49,7 +49,6 @@ import (
 	"github.com/matrix-org/gomatrixserverlib"
 
 	pineconeMulticast "github.com/matrix-org/pinecone/multicast"
-	"github.com/matrix-org/pinecone/router"
 	pineconeRouter "github.com/matrix-org/pinecone/router"
 	pineconeSessions "github.com/matrix-org/pinecone/sessions"
 
@@ -125,7 +124,7 @@ func main() {
 
 	connectToStaticPeer := func() {
 		attempt := func() {
-			if pRouter.PeerCount(router.PeerTypeRemote) == 0 {
+			if pRouter.PeerCount(pineconeRouter.PeerTypeRemote) == 0 {
 				uri := *instancePeer
 				if uri == "" {
 					return
diff --git a/cmd/dendrite-upgrade-tests/main.go b/cmd/dendrite-upgrade-tests/main.go
index a6cc2d3f..aa8c7fdc 100644
--- a/cmd/dendrite-upgrade-tests/main.go
+++ b/cmd/dendrite-upgrade-tests/main.go
@@ -148,7 +148,7 @@ func buildDendrite(httpClient *http.Client, dockerClient *client.Client, tmpDir,
 		// add top level Dockerfile
 		err = ioutil.WriteFile(path.Join(*flagHead, "Dockerfile"), []byte(Dockerfile), os.ModePerm)
 		if err != nil {
-			return "", fmt.Errorf("Custom HEAD: failed to inject /Dockerfile: %w", err)
+			return "", fmt.Errorf("custom HEAD: failed to inject /Dockerfile: %w", err)
 		}
 		// now tarball it
 		var buffer bytes.Buffer
diff --git a/federationapi/routing/send.go b/federationapi/routing/send.go
index aacc8a91..d31d38dc 100644
--- a/federationapi/routing/send.go
+++ b/federationapi/routing/send.go
@@ -711,7 +711,7 @@ withNextEvent:
 	}
 
 	if missing := len(missingAuthEvents); missing > 0 {
-		return fmt.Errorf("Event refers to %d auth_events which we failed to fetch", missing)
+		return fmt.Errorf("event refers to %d auth_events which we failed to fetch", missing)
 	}
 	return nil
 }
diff --git a/federationsender/consumers/keychange.go b/federationsender/consumers/keychange.go
index 675328df..a9f6d0f8 100644
--- a/federationsender/consumers/keychange.go
+++ b/federationsender/consumers/keychange.go
@@ -30,7 +30,6 @@ import (
 	"github.com/matrix-org/dendrite/setup/process"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/sirupsen/logrus"
-	log "github.com/sirupsen/logrus"
 )
 
 // KeyChangeConsumer consumes events that originate in key server.
@@ -82,7 +81,7 @@ func (t *KeyChangeConsumer) Start() error {
 func (t *KeyChangeConsumer) onMessage(msg *sarama.ConsumerMessage) error {
 	var m api.DeviceMessage
 	if err := json.Unmarshal(msg.Value, &m); err != nil {
-		log.WithError(err).Errorf("failed to read device message from key change topic")
+		logrus.WithError(err).Errorf("failed to read device message from key change topic")
 		return nil
 	}
 	switch m.Type {
@@ -96,7 +95,7 @@ func (t *KeyChangeConsumer) onMessage(msg *sarama.ConsumerMessage) error {
 }
 
 func (t *KeyChangeConsumer) onDeviceKeyMessage(m api.DeviceMessage) error {
-	logger := log.WithField("user_id", m.UserID)
+	logger := logrus.WithField("user_id", m.UserID)
 
 	// only send key change events which originated from us
 	_, originServerName, err := gomatrixserverlib.SplitID('@', m.UserID)
@@ -142,7 +141,7 @@ func (t *KeyChangeConsumer) onDeviceKeyMessage(m api.DeviceMessage) error {
 		return err
 	}
 
-	log.Infof("Sending device list update message to %q", destinations)
+	logrus.Infof("Sending device list update message to %q", destinations)
 	return t.queues.SendEDU(edu, t.serverName, destinations)
 }
 
@@ -158,7 +157,7 @@ func (t *KeyChangeConsumer) onCrossSigningMessage(m api.DeviceMessage) error {
 		// end up parroting information we received from other servers.
 		return nil
 	}
-	logger := log.WithField("user_id", output.UserID)
+	logger := logrus.WithField("user_id", output.UserID)
 
 	var queryRes roomserverAPI.QueryRoomsForUserResponse
 	err = t.rsAPI.QueryRoomsForUser(context.Background(), &roomserverAPI.QueryRoomsForUserRequest{
diff --git a/federationsender/internal/perform.go b/federationsender/internal/perform.go
index 968df247..2df936e3 100644
--- a/federationsender/internal/perform.go
+++ b/federationsender/internal/perform.go
@@ -409,7 +409,7 @@ func (r *FederationSenderInternalAPI) performOutboundPeekUsingServer(
 		return fmt.Errorf("sanityCheckAuthChain: %w", err)
 	}
 	if err = respState.Check(ctx, r.keyRing, federatedAuthProvider(ctx, r.federation, r.keyRing, serverName)); err != nil {
-		return fmt.Errorf("Error checking state returned from peeking: %w", err)
+		return fmt.Errorf("error checking state returned from peeking: %w", err)
 	}
 
 	// If we've got this far, the remote server is peeking.
@@ -523,7 +523,7 @@ func (r *FederationSenderInternalAPI) PerformLeave(
 
 	// If we reach here then we didn't complete a leave for some reason.
 	return fmt.Errorf(
-		"Failed to leave room %q through %d server(s)",
+		"failed to leave room %q through %d server(s)",
 		request.RoomID, len(request.ServerNames),
 	)
 }
diff --git a/federationsender/queue/destinationqueue.go b/federationsender/queue/destinationqueue.go
index 33f77a42..0123fa24 100644
--- a/federationsender/queue/destinationqueue.go
+++ b/federationsender/queue/destinationqueue.go
@@ -29,7 +29,6 @@ import (
 	"github.com/matrix-org/gomatrix"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/sirupsen/logrus"
-	log "github.com/sirupsen/logrus"
 	"go.uber.org/atomic"
 )
 
@@ -72,7 +71,7 @@ type destinationQueue struct {
 // start sending events to that destination.
 func (oq *destinationQueue) sendEvent(event *gomatrixserverlib.HeaderedEvent, receipt *shared.Receipt) {
 	if event == nil {
-		log.Errorf("attempt to send nil PDU with destination %q", oq.destination)
+		logrus.Errorf("attempt to send nil PDU with destination %q", oq.destination)
 		return
 	}
 	// Create a database entry that associates the given PDU NID with
@@ -84,7 +83,7 @@ func (oq *destinationQueue) sendEvent(event *gomatrixserverlib.HeaderedEvent, re
 		oq.destination, // the destination server name
 		receipt,        // NIDs from federationsender_queue_json table
 	); err != nil {
-		log.WithError(err).Errorf("failed to associate PDU %q with destination %q", event.EventID(), oq.destination)
+		logrus.WithError(err).Errorf("failed to associate PDU %q with destination %q", event.EventID(), oq.destination)
 		return
 	}
 	// Check if the destination is blacklisted. If it isn't then wake
@@ -116,7 +115,7 @@ func (oq *destinationQueue) sendEvent(event *gomatrixserverlib.HeaderedEvent, re
 // start sending events to that destination.
 func (oq *destinationQueue) sendEDU(event *gomatrixserverlib.EDU, receipt *shared.Receipt) {
 	if event == nil {
-		log.Errorf("attempt to send nil EDU with destination %q", oq.destination)
+		logrus.Errorf("attempt to send nil EDU with destination %q", oq.destination)
 		return
 	}
 	// Create a database entry that associates the given PDU NID with
@@ -127,7 +126,7 @@ func (oq *destinationQueue) sendEDU(event *gomatrixserverlib.EDU, receipt *share
 		oq.destination, // the destination server name
 		receipt,        // NIDs from federationsender_queue_json table
 	); err != nil {
-		log.WithError(err).Errorf("failed to associate EDU with destination %q", oq.destination)
+		logrus.WithError(err).Errorf("failed to associate EDU with destination %q", oq.destination)
 		return
 	}
 	// Check if the destination is blacklisted. If it isn't then wake
@@ -281,7 +280,7 @@ func (oq *destinationQueue) backgroundSend() {
 			// It's been suggested that we should give up because the backoff
 			// has exceeded a maximum allowable value. Clean up the in-memory
 			// buffers at this point. The PDU clean-up is already on a defer.
-			log.Warnf("Blacklisting %q due to exceeding backoff threshold", oq.destination)
+			logrus.Warnf("Blacklisting %q due to exceeding backoff threshold", oq.destination)
 			oq.pendingMutex.Lock()
 			for i := range oq.pendingPDUs {
 				oq.pendingPDUs[i] = nil
@@ -298,7 +297,7 @@ func (oq *destinationQueue) backgroundSend() {
 			// We haven't backed off yet, so wait for the suggested amount of
 			// time.
 			duration := time.Until(*until)
-			log.Warnf("Backing off %q for %s", oq.destination, duration)
+			logrus.Warnf("Backing off %q for %s", oq.destination, duration)
 			oq.backingOff.Store(true)
 			destinationQueueBackingOff.Inc()
 			select {
@@ -421,13 +420,13 @@ func (oq *destinationQueue) nextTransaction(
 		if pduReceipts != nil {
 			//logrus.Infof("Cleaning PDUs %q", pduReceipt.String())
 			if err = oq.db.CleanPDUs(context.Background(), oq.destination, pduReceipts); err != nil {
-				log.WithError(err).Errorf("Failed to clean PDUs for server %q", t.Destination)
+				logrus.WithError(err).Errorf("Failed to clean PDUs for server %q", t.Destination)
 			}
 		}
 		if eduReceipts != nil {
 			//logrus.Infof("Cleaning EDUs %q", eduReceipt.String())
 			if err = oq.db.CleanEDUs(context.Background(), oq.destination, eduReceipts); err != nil {
-				log.WithError(err).Errorf("Failed to clean EDUs for server %q", t.Destination)
+				logrus.WithError(err).Errorf("Failed to clean EDUs for server %q", t.Destination)
 			}
 		}
 		// Reset the transaction ID.
@@ -440,9 +439,9 @@ func (oq *destinationQueue) nextTransaction(
 		// will retry again, subject to backoff.
 		return false, 0, 0, err
 	default:
-		log.WithFields(log.Fields{
-			"destination": oq.destination,
-			log.ErrorKey:  err,
+		logrus.WithFields(logrus.Fields{
+			"destination":   oq.destination,
+			logrus.ErrorKey: err,
 		}).Debugf("Failed to send transaction %q", t.TransactionID)
 		return false, 0, 0, err
 	}
diff --git a/internal/eventutil/events.go b/internal/eventutil/events.go
index b8691c50..47c83d51 100644
--- a/internal/eventutil/events.go
+++ b/internal/eventutil/events.go
@@ -28,7 +28,7 @@ import (
 
 // ErrRoomNoExists is returned when trying to lookup the state of a room that
 // doesn't exist
-var ErrRoomNoExists = errors.New("Room does not exist")
+var ErrRoomNoExists = errors.New("room does not exist")
 
 // QueryAndBuildEvent builds a Matrix event using the event builder and roomserver query
 // API client provided. If also fills roomserver query API response (if provided)
diff --git a/internal/httputil/http.go b/internal/httputil/http.go
index 9197371a..a469c8ac 100644
--- a/internal/httputil/http.go
+++ b/internal/httputil/http.go
@@ -73,9 +73,9 @@ func PostJSON(
 			Message string `json:"message"`
 		}
 		if msgerr := json.NewDecoder(res.Body).Decode(&errorBody); msgerr == nil {
-			return fmt.Errorf("Internal API: %d from %s: %s", res.StatusCode, apiURL, errorBody.Message)
+			return fmt.Errorf("internal API: %d from %s: %s", res.StatusCode, apiURL, errorBody.Message)
 		}
-		return fmt.Errorf("Internal API: %d from %s", res.StatusCode, apiURL)
+		return fmt.Errorf("internal API: %d from %s", res.StatusCode, apiURL)
 	}
 	return json.NewDecoder(res.Body).Decode(response)
 }
diff --git a/internal/sqlutil/migrate.go b/internal/sqlutil/migrate.go
index 62b1c8fa..7518df3c 100644
--- a/internal/sqlutil/migrate.go
+++ b/internal/sqlutil/migrate.go
@@ -46,7 +46,7 @@ func (m *Migrations) RunDeltas(db *sql.DB, props *config.DatabaseOptions) error
 	minVer := int64(0)
 	migrations, err := m.collect(minVer, maxVer)
 	if err != nil {
-		return fmt.Errorf("RunDeltas: Failed to collect migrations: %w", err)
+		return fmt.Errorf("runDeltas: Failed to collect migrations: %w", err)
 	}
 	if props.ConnectionString.IsPostgres() {
 		if err = goose.SetDialect("postgres"); err != nil {
@@ -57,12 +57,12 @@ func (m *Migrations) RunDeltas(db *sql.DB, props *config.DatabaseOptions) error
 			return err
 		}
 	} else {
-		return fmt.Errorf("Unknown connection string: %s", props.ConnectionString)
+		return fmt.Errorf("unknown connection string: %s", props.ConnectionString)
 	}
 	for {
 		current, err := goose.EnsureDBVersion(db)
 		if err != nil {
-			return fmt.Errorf("RunDeltas: Failed to EnsureDBVersion: %w", err)
+			return fmt.Errorf("runDeltas: Failed to EnsureDBVersion: %w", err)
 		}
 
 		next, err := migrations.Next(current)
@@ -71,11 +71,11 @@ func (m *Migrations) RunDeltas(db *sql.DB, props *config.DatabaseOptions) error
 				return nil
 			}
 
-			return fmt.Errorf("RunDeltas: Failed to load next migration to %+v : %w", next, err)
+			return fmt.Errorf("runDeltas: Failed to load next migration to %+v : %w", next, err)
 		}
 
 		if err = next.Up(db); err != nil {
-			return fmt.Errorf("RunDeltas: Failed run migration: %w", err)
+			return fmt.Errorf("runDeltas: Failed run migration: %w", err)
 		}
 	}
 }
diff --git a/internal/sqlutil/sql.go b/internal/sqlutil/sql.go
index 98cc396a..8d0d2dfa 100644
--- a/internal/sqlutil/sql.go
+++ b/internal/sqlutil/sql.go
@@ -25,7 +25,7 @@ import (
 )
 
 // ErrUserExists is returned if a username already exists in the database.
-var ErrUserExists = errors.New("Username already exists")
+var ErrUserExists = errors.New("username already exists")
 
 // A Transaction is something that can be committed or rolledback.
 type Transaction interface {
diff --git a/mediaapi/fileutils/fileutils.go b/mediaapi/fileutils/fileutils.go
index 7309cb88..754e4644 100644
--- a/mediaapi/fileutils/fileutils.go
+++ b/mediaapi/fileutils/fileutils.go
@@ -37,10 +37,10 @@ import (
 // For example, if Base64Hash is 'qwerty', the path will be 'q/w/erty/file'.
 func GetPathFromBase64Hash(base64Hash types.Base64Hash, absBasePath config.Path) (string, error) {
 	if len(base64Hash) < 3 {
-		return "", fmt.Errorf("Invalid filePath (Base64Hash too short - min 3 characters): %q", base64Hash)
+		return "", fmt.Errorf("invalid filePath (Base64Hash too short - min 3 characters): %q", base64Hash)
 	}
 	if len(base64Hash) > 255 {
-		return "", fmt.Errorf("Invalid filePath (Base64Hash too long - max 255 characters): %q", base64Hash)
+		return "", fmt.Errorf("invalid filePath (Base64Hash too long - max 255 characters): %q", base64Hash)
 	}
 
 	filePath, err := filepath.Abs(filepath.Join(
@@ -51,14 +51,14 @@ func GetPathFromBase64Hash(base64Hash types.Base64Hash, absBasePath config.Path)
 		"file",
 	))
 	if err != nil {
-		return "", fmt.Errorf("Unable to construct filePath: %w", err)
+		return "", fmt.Errorf("unable to construct filePath: %w", err)
 	}
 
 	// check if the absolute absBasePath is a prefix of the absolute filePath
 	// if so, no directory escape has occurred and the filePath is valid
 	// Note: absBasePath is already absolute
 	if !strings.HasPrefix(filePath, string(absBasePath)) {
-		return "", fmt.Errorf("Invalid filePath (not within absBasePath %v): %v", absBasePath, filePath)
+		return "", fmt.Errorf("invalid filePath (not within absBasePath %v): %v", absBasePath, filePath)
 	}
 
 	return filePath, nil
@@ -102,7 +102,7 @@ func MoveFileWithHashCheck(tmpDir types.Path, mediaMetadata *types.MediaMetadata
 func RemoveDir(dir types.Path, logger *log.Entry) {
 	dirErr := os.RemoveAll(string(dir))
 	if dirErr != nil {
-		logger.WithError(dirErr).WithField("dir", dir).Warn("Failed to remove directory")
+		logger.WithError(dirErr).WithField("dir", dir).Warn("failed to remove directory")
 	}
 }
 
@@ -153,11 +153,11 @@ func moveFile(src types.Path, dst types.Path) error {
 
 	err := os.MkdirAll(dstDir, 0770)
 	if err != nil {
-		return fmt.Errorf("Failed to make directory: %w", err)
+		return fmt.Errorf("failed to make directory: %w", err)
 	}
 	err = os.Rename(string(src), string(dst))
 	if err != nil {
-		return fmt.Errorf("Failed to move directory: %w", err)
+		return fmt.Errorf("failed to move directory: %w", err)
 	}
 	return nil
 }
@@ -165,11 +165,11 @@ func moveFile(src types.Path, dst types.Path) error {
 func createTempFileWriter(absBasePath config.Path) (*bufio.Writer, *os.File, types.Path, error) {
 	tmpDir, err := createTempDir(absBasePath)
 	if err != nil {
-		return nil, nil, "", fmt.Errorf("Failed to create temp dir: %w", err)
+		return nil, nil, "", fmt.Errorf("failed to create temp dir: %w", err)
 	}
 	writer, tmpFile, err := createFileWriter(tmpDir)
 	if err != nil {
-		return nil, nil, "", fmt.Errorf("Failed to create file writer: %w", err)
+		return nil, nil, "", fmt.Errorf("failed to create file writer: %w", err)
 	}
 	return writer, tmpFile, tmpDir, nil
 }
@@ -178,11 +178,11 @@ func createTempFileWriter(absBasePath config.Path) (*bufio.Writer, *os.File, typ
 func createTempDir(baseDirectory config.Path) (types.Path, error) {
 	baseTmpDir := filepath.Join(string(baseDirectory), "tmp")
 	if err := os.MkdirAll(baseTmpDir, 0770); err != nil {
-		return "", fmt.Errorf("Failed to create base temp dir: %w", err)
+		return "", fmt.Errorf("failed to create base temp dir: %w", err)
 	}
 	tmpDir, err := ioutil.TempDir(baseTmpDir, "")
 	if err != nil {
-		return "", fmt.Errorf("Failed to create temp dir: %w", err)
+		return "", fmt.Errorf("failed to create temp dir: %w", err)
 	}
 	return types.Path(tmpDir), nil
 }
@@ -194,7 +194,7 @@ func createFileWriter(directory types.Path) (*bufio.Writer, *os.File, error) {
 	filePath := filepath.Join(string(directory), "content")
 	file, err := os.Create(filePath)
 	if err != nil {
-		return nil, nil, fmt.Errorf("Failed to create file: %w", err)
+		return nil, nil, fmt.Errorf("failed to create file: %w", err)
 	}
 
 	return bufio.NewWriter(file), file, nil
diff --git a/roomserver/internal/perform/perform_invite.go b/roomserver/internal/perform/perform_invite.go
index c6ad79d9..024c0930 100644
--- a/roomserver/internal/perform/perform_invite.go
+++ b/roomserver/internal/perform/perform_invite.go
@@ -51,7 +51,7 @@ func (r *Inviter) PerformInvite(
 	targetUserID := *event.StateKey()
 	info, err := r.DB.RoomInfo(ctx, roomID)
 	if err != nil {
-		return nil, fmt.Errorf("Failed to load RoomInfo: %w", err)
+		return nil, fmt.Errorf("failed to load RoomInfo: %w", err)
 	}
 
 	log.WithFields(log.Fields{
diff --git a/roomserver/internal/perform/perform_join.go b/roomserver/internal/perform/perform_join.go
index 876888e2..772c9d7d 100644
--- a/roomserver/internal/perform/perform_join.go
+++ b/roomserver/internal/perform/perform_join.go
@@ -24,7 +24,6 @@ import (
 	"github.com/getsentry/sentry-go"
 	fsAPI "github.com/matrix-org/dendrite/federationsender/api"
 	"github.com/matrix-org/dendrite/internal/eventutil"
-	"github.com/matrix-org/dendrite/roomserver/api"
 	rsAPI "github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/dendrite/roomserver/internal/helpers"
 	"github.com/matrix-org/dendrite/roomserver/internal/input"
@@ -49,17 +48,17 @@ type Joiner struct {
 // PerformJoin handles joining matrix rooms, including over federation by talking to the federationsender.
 func (r *Joiner) PerformJoin(
 	ctx context.Context,
-	req *api.PerformJoinRequest,
-	res *api.PerformJoinResponse,
+	req *rsAPI.PerformJoinRequest,
+	res *rsAPI.PerformJoinResponse,
 ) {
 	roomID, joinedVia, err := r.performJoin(ctx, req)
 	if err != nil {
 		sentry.CaptureException(err)
-		perr, ok := err.(*api.PerformError)
+		perr, ok := err.(*rsAPI.PerformError)
 		if ok {
 			res.Error = perr
 		} else {
-			res.Error = &api.PerformError{
+			res.Error = &rsAPI.PerformError{
 				Msg: err.Error(),
 			}
 		}
@@ -70,18 +69,18 @@ func (r *Joiner) PerformJoin(
 
 func (r *Joiner) performJoin(
 	ctx context.Context,
-	req *api.PerformJoinRequest,
+	req *rsAPI.PerformJoinRequest,
 ) (string, gomatrixserverlib.ServerName, error) {
 	_, domain, err := gomatrixserverlib.SplitID('@', req.UserID)
 	if err != nil {
-		return "", "", &api.PerformError{
-			Code: api.PerformErrorBadRequest,
+		return "", "", &rsAPI.PerformError{
+			Code: rsAPI.PerformErrorBadRequest,
 			Msg:  fmt.Sprintf("Supplied user ID %q in incorrect format", req.UserID),
 		}
 	}
 	if domain != r.Cfg.Matrix.ServerName {
-		return "", "", &api.PerformError{
-			Code: api.PerformErrorBadRequest,
+		return "", "", &rsAPI.PerformError{
+			Code: rsAPI.PerformErrorBadRequest,
 			Msg:  fmt.Sprintf("User %q does not belong to this homeserver", req.UserID),
 		}
 	}
@@ -91,20 +90,20 @@ func (r *Joiner) performJoin(
 	if strings.HasPrefix(req.RoomIDOrAlias, "#") {
 		return r.performJoinRoomByAlias(ctx, req)
 	}
-	return "", "", &api.PerformError{
-		Code: api.PerformErrorBadRequest,
+	return "", "", &rsAPI.PerformError{
+		Code: rsAPI.PerformErrorBadRequest,
 		Msg:  fmt.Sprintf("Room ID or alias %q is invalid", req.RoomIDOrAlias),
 	}
 }
 
 func (r *Joiner) performJoinRoomByAlias(
 	ctx context.Context,
-	req *api.PerformJoinRequest,
+	req *rsAPI.PerformJoinRequest,
 ) (string, gomatrixserverlib.ServerName, error) {
 	// Get the domain part of the room alias.
 	_, domain, err := gomatrixserverlib.SplitID('#', req.RoomIDOrAlias)
 	if err != nil {
-		return "", "", fmt.Errorf("Alias %q is not in the correct format", req.RoomIDOrAlias)
+		return "", "", fmt.Errorf("alias %q is not in the correct format", req.RoomIDOrAlias)
 	}
 	req.ServerNames = append(req.ServerNames, domain)
 
@@ -122,7 +121,7 @@ func (r *Joiner) performJoinRoomByAlias(
 		err = r.FSAPI.PerformDirectoryLookup(ctx, &dirReq, &dirRes)
 		if err != nil {
 			logrus.WithError(err).Errorf("error looking up alias %q", req.RoomIDOrAlias)
-			return "", "", fmt.Errorf("Looking up alias %q over federation failed: %w", req.RoomIDOrAlias, err)
+			return "", "", fmt.Errorf("looking up alias %q over federation failed: %w", req.RoomIDOrAlias, err)
 		}
 		roomID = dirRes.RoomID
 		req.ServerNames = append(req.ServerNames, dirRes.ServerNames...)
@@ -135,14 +134,14 @@ func (r *Joiner) performJoinRoomByAlias(
 		// Otherwise, look up if we know this room alias locally.
 		err = r.RSAPI.GetRoomIDForAlias(ctx, &getRoomReq, &getRoomRes)
 		if err != nil {
-			return "", "", fmt.Errorf("Lookup room alias %q failed: %w", req.RoomIDOrAlias, err)
+			return "", "", fmt.Errorf("lookup room alias %q failed: %w", req.RoomIDOrAlias, err)
 		}
 		roomID = getRoomRes.RoomID
 	}
 
 	// If the room ID is empty then we failed to look up the alias.
 	if roomID == "" {
-		return "", "", fmt.Errorf("Alias %q not found", req.RoomIDOrAlias)
+		return "", "", fmt.Errorf("alias %q not found", req.RoomIDOrAlias)
 	}
 
 	// If we do, then pluck out the room ID and continue the join.
@@ -153,7 +152,7 @@ func (r *Joiner) performJoinRoomByAlias(
 // TODO: Break this function up a bit
 func (r *Joiner) performJoinRoomByID(
 	ctx context.Context,
-	req *api.PerformJoinRequest,
+	req *rsAPI.PerformJoinRequest,
 ) (string, gomatrixserverlib.ServerName, error) {
 	// The original client request ?server_name=... may include this HS so filter that out so we
 	// don't attempt to make_join with ourselves
@@ -168,8 +167,8 @@ func (r *Joiner) performJoinRoomByID(
 	// Get the domain part of the room ID.
 	_, domain, err := gomatrixserverlib.SplitID('!', req.RoomIDOrAlias)
 	if err != nil {
-		return "", "", &api.PerformError{
-			Code: api.PerformErrorBadRequest,
+		return "", "", &rsAPI.PerformError{
+			Code: rsAPI.PerformErrorBadRequest,
 			Msg:  fmt.Sprintf("Room ID %q is invalid: %s", req.RoomIDOrAlias, err),
 		}
 	}
@@ -207,10 +206,10 @@ func (r *Joiner) performJoinRoomByID(
 
 	// Force a federated join if we aren't in the room and we've been
 	// given some server names to try joining by.
-	inRoomReq := &api.QueryServerJoinedToRoomRequest{
+	inRoomReq := &rsAPI.QueryServerJoinedToRoomRequest{
 		RoomID: req.RoomIDOrAlias,
 	}
-	inRoomRes := &api.QueryServerJoinedToRoomResponse{}
+	inRoomRes := &rsAPI.QueryServerJoinedToRoomResponse{}
 	if err = r.Queryer.QueryServerJoinedToRoom(ctx, inRoomReq, inRoomRes); err != nil {
 		return "", "", fmt.Errorf("r.Queryer.QueryServerJoinedToRoom: %w", err)
 	}
@@ -267,21 +266,21 @@ func (r *Joiner) performJoinRoomByID(
 		// If we haven't already joined the room then send an event
 		// into the room changing our membership status.
 		if !alreadyJoined {
-			inputReq := api.InputRoomEventsRequest{
-				InputRoomEvents: []api.InputRoomEvent{
+			inputReq := rsAPI.InputRoomEventsRequest{
+				InputRoomEvents: []rsAPI.InputRoomEvent{
 					{
-						Kind:         api.KindNew,
+						Kind:         rsAPI.KindNew,
 						Event:        event.Headered(buildRes.RoomVersion),
 						AuthEventIDs: event.AuthEventIDs(),
 						SendAsServer: string(r.Cfg.Matrix.ServerName),
 					},
 				},
 			}
-			inputRes := api.InputRoomEventsResponse{}
+			inputRes := rsAPI.InputRoomEventsResponse{}
 			r.Inputer.InputRoomEvents(ctx, &inputReq, &inputRes)
 			if err = inputRes.Err(); err != nil {
-				return "", "", &api.PerformError{
-					Code: api.PerformErrorNotAllowed,
+				return "", "", &rsAPI.PerformError{
+					Code: rsAPI.PerformErrorNotAllowed,
 					Msg:  fmt.Sprintf("InputRoomEvents auth failed: %s", err),
 				}
 			}
@@ -296,9 +295,9 @@ func (r *Joiner) performJoinRoomByID(
 			// Otherwise we'll try a federated join as normal, since it's quite
 			// possible that the room still exists on other servers.
 			if len(req.ServerNames) == 0 {
-				return "", "", &api.PerformError{
-					Code: api.PerformErrorNoRoom,
-					Msg:  fmt.Sprintf("Room ID %q does not exist", req.RoomIDOrAlias),
+				return "", "", &rsAPI.PerformError{
+					Code: rsAPI.PerformErrorNoRoom,
+					Msg:  fmt.Sprintf("room ID %q does not exist", req.RoomIDOrAlias),
 				}
 			}
 		}
@@ -309,7 +308,7 @@ func (r *Joiner) performJoinRoomByID(
 
 	default:
 		// Something else went wrong.
-		return "", "", fmt.Errorf("Error joining local room: %q", err)
+		return "", "", fmt.Errorf("error joining local room: %q", err)
 	}
 
 	// By this point, if req.RoomIDOrAlias contained an alias, then
@@ -321,7 +320,7 @@ func (r *Joiner) performJoinRoomByID(
 
 func (r *Joiner) performFederatedJoinRoomByID(
 	ctx context.Context,
-	req *api.PerformJoinRequest,
+	req *rsAPI.PerformJoinRequest,
 ) (gomatrixserverlib.ServerName, error) {
 	// Try joining by all of the supplied server names.
 	fedReq := fsAPI.PerformJoinRequest{
@@ -333,8 +332,8 @@ func (r *Joiner) performFederatedJoinRoomByID(
 	fedRes := fsAPI.PerformJoinResponse{}
 	r.FSAPI.PerformJoin(ctx, &fedReq, &fedRes)
 	if fedRes.LastError != nil {
-		return "", &api.PerformError{
-			Code:       api.PerformErrRemote,
+		return "", &rsAPI.PerformError{
+			Code:       rsAPI.PerformErrRemote,
 			Msg:        fedRes.LastError.Message,
 			RemoteCode: fedRes.LastError.Code,
 		}
@@ -344,7 +343,7 @@ func (r *Joiner) performFederatedJoinRoomByID(
 
 func buildEvent(
 	ctx context.Context, db storage.Database, cfg *config.Global, builder *gomatrixserverlib.EventBuilder,
-) (*gomatrixserverlib.HeaderedEvent, *api.QueryLatestEventsAndStateResponse, error) {
+) (*gomatrixserverlib.HeaderedEvent, *rsAPI.QueryLatestEventsAndStateResponse, error) {
 	eventsNeeded, err := gomatrixserverlib.StateNeededForEventBuilder(builder)
 	if err != nil {
 		return nil, nil, fmt.Errorf("gomatrixserverlib.StateNeededForEventBuilder: %w", err)
@@ -354,8 +353,8 @@ func buildEvent(
 		return nil, nil, errors.New("expecting state tuples for event builder, got none")
 	}
 
-	var queryRes api.QueryLatestEventsAndStateResponse
-	err = helpers.QueryLatestEventsAndState(ctx, db, &api.QueryLatestEventsAndStateRequest{
+	var queryRes rsAPI.QueryLatestEventsAndStateResponse
+	err = helpers.QueryLatestEventsAndState(ctx, db, &rsAPI.QueryLatestEventsAndStateRequest{
 		RoomID:       builder.RoomID,
 		StateToFetch: eventsNeeded.Tuples(),
 	}, &queryRes)
diff --git a/roomserver/internal/perform/perform_leave.go b/roomserver/internal/perform/perform_leave.go
index 88eb7e1e..a51de546 100644
--- a/roomserver/internal/perform/perform_leave.go
+++ b/roomserver/internal/perform/perform_leave.go
@@ -45,15 +45,15 @@ func (r *Leaver) PerformLeave(
 ) ([]api.OutputEvent, error) {
 	_, domain, err := gomatrixserverlib.SplitID('@', req.UserID)
 	if err != nil {
-		return nil, fmt.Errorf("Supplied user ID %q in incorrect format", req.UserID)
+		return nil, fmt.Errorf("supplied user ID %q in incorrect format", req.UserID)
 	}
 	if domain != r.Cfg.Matrix.ServerName {
-		return nil, fmt.Errorf("User %q does not belong to this homeserver", req.UserID)
+		return nil, fmt.Errorf("user %q does not belong to this homeserver", req.UserID)
 	}
 	if strings.HasPrefix(req.RoomID, "!") {
 		return r.performLeaveRoomByID(ctx, req, res)
 	}
-	return nil, fmt.Errorf("Room ID %q is invalid", req.RoomID)
+	return nil, fmt.Errorf("room ID %q is invalid", req.RoomID)
 }
 
 func (r *Leaver) performLeaveRoomByID(
@@ -68,7 +68,7 @@ func (r *Leaver) performLeaveRoomByID(
 		var host gomatrixserverlib.ServerName
 		_, host, err = gomatrixserverlib.SplitID('@', senderUser)
 		if err != nil {
-			return nil, fmt.Errorf("Sender %q is invalid", senderUser)
+			return nil, fmt.Errorf("sender %q is invalid", senderUser)
 		}
 		if host != r.Cfg.Matrix.ServerName {
 			return r.performFederatedRejectInvite(ctx, req, res, senderUser, eventID)
@@ -91,19 +91,19 @@ func (r *Leaver) performLeaveRoomByID(
 		return nil, err
 	}
 	if !latestRes.RoomExists {
-		return nil, fmt.Errorf("Room %q does not exist", req.RoomID)
+		return nil, fmt.Errorf("room %q does not exist", req.RoomID)
 	}
 
 	// Now let's see if the user is in the room.
 	if len(latestRes.StateEvents) == 0 {
-		return nil, fmt.Errorf("User %q is not a member of room %q", req.UserID, req.RoomID)
+		return nil, fmt.Errorf("user %q is not a member of room %q", req.UserID, req.RoomID)
 	}
 	membership, err := latestRes.StateEvents[0].Membership()
 	if err != nil {
-		return nil, fmt.Errorf("Error getting membership: %w", err)
+		return nil, fmt.Errorf("error getting membership: %w", err)
 	}
 	if membership != gomatrixserverlib.Join && membership != gomatrixserverlib.Invite {
-		return nil, fmt.Errorf("User %q is not joined to the room (membership is %q)", req.UserID, membership)
+		return nil, fmt.Errorf("user %q is not joined to the room (membership is %q)", req.UserID, membership)
 	}
 
 	// Prepare the template for the leave event.
@@ -161,7 +161,7 @@ func (r *Leaver) performFederatedRejectInvite(
 ) ([]api.OutputEvent, error) {
 	_, domain, err := gomatrixserverlib.SplitID('@', senderUser)
 	if err != nil {
-		return nil, fmt.Errorf("User ID %q invalid: %w", senderUser, err)
+		return nil, fmt.Errorf("user ID %q invalid: %w", senderUser, err)
 	}
 
 	// Ask the federation sender to perform a federated leave for us.
diff --git a/roomserver/internal/perform/perform_peek.go b/roomserver/internal/perform/perform_peek.go
index 443276cd..bd799667 100644
--- a/roomserver/internal/perform/perform_peek.go
+++ b/roomserver/internal/perform/perform_peek.go
@@ -96,7 +96,7 @@ func (r *Peeker) performPeekRoomByAlias(
 	// Get the domain part of the room alias.
 	_, domain, err := gomatrixserverlib.SplitID('#', req.RoomIDOrAlias)
 	if err != nil {
-		return "", fmt.Errorf("Alias %q is not in the correct format", req.RoomIDOrAlias)
+		return "", fmt.Errorf("alias %q is not in the correct format", req.RoomIDOrAlias)
 	}
 	req.ServerNames = append(req.ServerNames, domain)
 
@@ -114,7 +114,7 @@ func (r *Peeker) performPeekRoomByAlias(
 		err = r.FSAPI.PerformDirectoryLookup(ctx, &dirReq, &dirRes)
 		if err != nil {
 			logrus.WithError(err).Errorf("error looking up alias %q", req.RoomIDOrAlias)
-			return "", fmt.Errorf("Looking up alias %q over federation failed: %w", req.RoomIDOrAlias, err)
+			return "", fmt.Errorf("looking up alias %q over federation failed: %w", req.RoomIDOrAlias, err)
 		}
 		roomID = dirRes.RoomID
 		req.ServerNames = append(req.ServerNames, dirRes.ServerNames...)
@@ -122,13 +122,13 @@ func (r *Peeker) performPeekRoomByAlias(
 		// Otherwise, look up if we know this room alias locally.
 		roomID, err = r.DB.GetRoomIDForAlias(ctx, req.RoomIDOrAlias)
 		if err != nil {
-			return "", fmt.Errorf("Lookup room alias %q failed: %w", req.RoomIDOrAlias, err)
+			return "", fmt.Errorf("lookup room alias %q failed: %w", req.RoomIDOrAlias, err)
 		}
 	}
 
 	// If the room ID is empty then we failed to look up the alias.
 	if roomID == "" {
-		return "", fmt.Errorf("Alias %q not found", req.RoomIDOrAlias)
+		return "", fmt.Errorf("alias %q not found", req.RoomIDOrAlias)
 	}
 
 	// If we do, then pluck out the room ID and continue the peek.
diff --git a/roomserver/state/state.go b/roomserver/state/state.go
index 3d71dbb6..bae8b24c 100644
--- a/roomserver/state/state.go
+++ b/roomserver/state/state.go
@@ -71,7 +71,7 @@ func (v *StateResolution) LoadStateAtSnapshot(
 		if !ok {
 			// This should only get hit if the database is corrupt.
 			// It should be impossible for an event to reference a NID that doesn't exist
-			panic(fmt.Errorf("Corrupt DB: Missing state block numeric ID %d", stateBlockNID))
+			panic(fmt.Errorf("corrupt DB: Missing state block numeric ID %d", stateBlockNID))
 		}
 		fullState = append(fullState, entries...)
 	}
@@ -146,7 +146,7 @@ func (v *StateResolution) LoadCombinedStateAfterEvents(
 		if !ok {
 			// This should only get hit if the database is corrupt.
 			// It should be impossible for an event to reference a NID that doesn't exist
-			panic(fmt.Errorf("Corrupt DB: Missing state snapshot numeric ID %d", prevState.BeforeStateSnapshotNID))
+			panic(fmt.Errorf("corrupt DB: Missing state snapshot numeric ID %d", prevState.BeforeStateSnapshotNID))
 		}
 
 		// Combine all the state entries for this snapshot.
@@ -157,7 +157,7 @@ func (v *StateResolution) LoadCombinedStateAfterEvents(
 			if !ok {
 				// This should only get hit if the database is corrupt.
 				// It should be impossible for an event to reference a NID that doesn't exist
-				panic(fmt.Errorf("Corrupt DB: Missing state block numeric ID %d", stateBlockNID))
+				panic(fmt.Errorf("corrupt DB: Missing state block numeric ID %d", stateBlockNID))
 			}
 			fullState = append(fullState, entries...)
 		}
@@ -757,7 +757,7 @@ func (v *StateResolution) resolveConflictsV1(
 	for _, resolvedEvent := range resolvedEvents {
 		entry, ok := eventIDMap[resolvedEvent.EventID()]
 		if !ok {
-			panic(fmt.Errorf("Missing state entry for event ID %q", resolvedEvent.EventID()))
+			panic(fmt.Errorf("missing state entry for event ID %q", resolvedEvent.EventID()))
 		}
 		notConflicted = append(notConflicted, entry)
 	}
@@ -880,7 +880,7 @@ func (v *StateResolution) resolveConflictsV2(
 	for _, resolvedEvent := range resolvedEvents {
 		entry, ok := eventIDMap[resolvedEvent.EventID()]
 		if !ok {
-			panic(fmt.Errorf("Missing state entry for event ID %q", resolvedEvent.EventID()))
+			panic(fmt.Errorf("missing state entry for event ID %q", resolvedEvent.EventID()))
 		}
 		notConflicted = append(notConflicted, entry)
 	}
@@ -958,7 +958,7 @@ func (v *StateResolution) loadStateEvents(
 	for _, entry := range eventEntries {
 		event, ok := eventMap(events).lookup(entry.EventNID)
 		if !ok {
-			panic(fmt.Errorf("Corrupt DB: Missing event numeric ID %d", entry.EventNID))
+			panic(fmt.Errorf("corrupt DB: Missing event numeric ID %d", entry.EventNID))
 		}
 		result = append(result, event.Event)
 		eventIDMap[event.Event.EventID()] = entry
diff --git a/roomserver/storage/shared/storage.go b/roomserver/storage/shared/storage.go
index e1851679..b4fc15f1 100644
--- a/roomserver/storage/shared/storage.go
+++ b/roomserver/storage/shared/storage.go
@@ -1136,7 +1136,7 @@ func (d *Database) loadStateAtSnapshot(
 		if !ok {
 			// This should only get hit if the database is corrupt.
 			// It should be impossible for an event to reference a NID that doesn't exist
-			panic(fmt.Errorf("Corrupt DB: Missing state block numeric ID %d", stateBlockNID))
+			panic(fmt.Errorf("corrupt DB: Missing state block numeric ID %d", stateBlockNID))
 		}
 		fullState = append(fullState, entries...)
 	}
diff --git a/setup/mscs/msc2836/msc2836.go b/setup/mscs/msc2836/msc2836.go
index f47a42d9..a538299d 100644
--- a/setup/mscs/msc2836/msc2836.go
+++ b/setup/mscs/msc2836/msc2836.go
@@ -98,7 +98,7 @@ func Enable(
 ) error {
 	db, err := NewDatabase(&base.Cfg.MSCs.Database)
 	if err != nil {
-		return fmt.Errorf("Cannot enable MSC2836: %w", err)
+		return fmt.Errorf("cannot enable MSC2836: %w", err)
 	}
 	hooks.Enable()
 	hooks.Attach(hooks.KindNewEventPersisted, func(headeredEvent interface{}) {
diff --git a/setup/mscs/msc2946/msc2946.go b/setup/mscs/msc2946/msc2946.go
index 08a54f75..121a73fd 100644
--- a/setup/mscs/msc2946/msc2946.go
+++ b/setup/mscs/msc2946/msc2946.go
@@ -57,7 +57,7 @@ func Enable(
 ) error {
 	db, err := NewDatabase(&base.Cfg.MSCs.Database)
 	if err != nil {
-		return fmt.Errorf("Cannot enable MSC2946: %w", err)
+		return fmt.Errorf("cannot enable MSC2946: %w", err)
 	}
 	hooks.Enable()
 	hooks.Attach(hooks.KindNewEventPersisted, func(headeredEvent interface{}) {
diff --git a/syncapi/consumers/keychange.go b/syncapi/consumers/keychange.go
index 05fcf37d..1938ff9b 100644
--- a/syncapi/consumers/keychange.go
+++ b/syncapi/consumers/keychange.go
@@ -30,7 +30,6 @@ import (
 	"github.com/matrix-org/dendrite/syncapi/types"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/sirupsen/logrus"
-	log "github.com/sirupsen/logrus"
 )
 
 // OutputKeyChangeEventConsumer consumes events that originated in the key server.
@@ -128,7 +127,7 @@ func (s *OutputKeyChangeEventConsumer) onDeviceKeyMessage(m api.DeviceMessage, o
 		UserID: output.UserID,
 	}, &queryRes)
 	if err != nil {
-		log.WithError(err).Error("syncapi: failed to QuerySharedUsers for key change event from key server")
+		logrus.WithError(err).Error("syncapi: failed to QuerySharedUsers for key change event from key server")
 		sentry.CaptureException(err)
 		return err
 	}
@@ -155,7 +154,7 @@ func (s *OutputKeyChangeEventConsumer) onCrossSigningMessage(m api.DeviceMessage
 		UserID: output.UserID,
 	}, &queryRes)
 	if err != nil {
-		log.WithError(err).Error("syncapi: failed to QuerySharedUsers for key change event from key server")
+		logrus.WithError(err).Error("syncapi: failed to QuerySharedUsers for key change event from key server")
 		sentry.CaptureException(err)
 		return err
 	}
diff --git a/syncapi/internal/keychange.go b/syncapi/internal/keychange.go
index 0bbaf31e..56a438fb 100644
--- a/syncapi/internal/keychange.go
+++ b/syncapi/internal/keychange.go
@@ -19,7 +19,6 @@ import (
 	"strings"
 
 	"github.com/Shopify/sarama"
-	"github.com/matrix-org/dendrite/keyserver/api"
 	keyapi "github.com/matrix-org/dendrite/keyserver/api"
 	roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/dendrite/syncapi/types"
@@ -31,8 +30,8 @@ const DeviceListLogName = "dl"
 
 // DeviceOTKCounts adds one-time key counts to the /sync response
 func DeviceOTKCounts(ctx context.Context, keyAPI keyapi.KeyInternalAPI, userID, deviceID string, res *types.Response) error {
-	var queryRes api.QueryOneTimeKeysResponse
-	keyAPI.QueryOneTimeKeys(ctx, &api.QueryOneTimeKeysRequest{
+	var queryRes keyapi.QueryOneTimeKeysResponse
+	keyAPI.QueryOneTimeKeys(ctx, &keyapi.QueryOneTimeKeysRequest{
 		UserID:   userID,
 		DeviceID: deviceID,
 	}, &queryRes)
@@ -81,8 +80,8 @@ func DeviceListCatchup(
 	if toLog := to; toLog.Partition == partition && toLog.Offset > 0 {
 		toOffset = toLog.Offset
 	}
-	var queryRes api.QueryKeyChangesResponse
-	keyAPI.QueryKeyChanges(ctx, &api.QueryKeyChangesRequest{
+	var queryRes keyapi.QueryKeyChangesResponse
+	keyAPI.QueryKeyChanges(ctx, &keyapi.QueryKeyChangesRequest{
 		Partition: partition,
 		Offset:    offset,
 		ToOffset:  toOffset,
diff --git a/syncapi/storage/shared/syncserver.go b/syncapi/storage/shared/syncserver.go
index b8271877..e6c68183 100644
--- a/syncapi/storage/shared/syncserver.go
+++ b/syncapi/storage/shared/syncserver.go
@@ -30,7 +30,6 @@ import (
 	"github.com/matrix-org/dendrite/syncapi/types"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/sirupsen/logrus"
-	log "github.com/sirupsen/logrus"
 )
 
 // Database is a temporary struct until we have made syncserver.go the same for both pq/sqlite
@@ -309,7 +308,7 @@ func (d *Database) StreamEventsToEvents(device *userapi.Device, in []types.Strea
 					"transaction_id", in[i].TransactionID.TransactionID,
 				)
 				if err != nil {
-					log.WithFields(log.Fields{
+					logrus.WithFields(logrus.Fields{
 						"event_id": out[i].EventID(),
 					}).WithError(err).Warnf("Failed to add transaction ID to event")
 				}
@@ -529,7 +528,7 @@ func (d *Database) RedactEvent(ctx context.Context, redactedEventID string, reda
 		return err
 	}
 	if len(redactedEvents) == 0 {
-		log.WithField("event_id", redactedEventID).WithField("redaction_event", redactedBecause.EventID()).Warnf("missing redacted event for redaction")
+		logrus.WithField("event_id", redactedEventID).WithField("redaction_event", redactedBecause.EventID()).Warnf("missing redacted event for redaction")
 		return nil
 	}
 	eventToRedact := redactedEvents[0].Unwrap()
@@ -645,7 +644,7 @@ func (d *Database) fetchMissingStateEvents(
 		return nil, err
 	}
 	if len(stateEvents) != len(missing) {
-		log.WithContext(ctx).Warnf("Failed to map all event IDs to events (got %d, wanted %d)", len(stateEvents), len(missing))
+		logrus.WithContext(ctx).Warnf("Failed to map all event IDs to events (got %d, wanted %d)", len(stateEvents), len(missing))
 
 		// TODO: Why is this happening? It's probably the roomserver. Uncomment
 		// this error again when we work out what it is and fix it, otherwise we
diff --git a/syncapi/types/types.go b/syncapi/types/types.go
index 49fa1a16..44e718b3 100644
--- a/syncapi/types/types.go
+++ b/syncapi/types/types.go
@@ -29,10 +29,10 @@ var (
 	// ErrInvalidSyncTokenType is returned when an attempt at creating a
 	// new instance of SyncToken with an invalid type (i.e. neither "s"
 	// nor "t").
-	ErrInvalidSyncTokenType = fmt.Errorf("Sync token has an unknown prefix (should be either s or t)")
+	ErrInvalidSyncTokenType = fmt.Errorf("sync token has an unknown prefix (should be either s or t)")
 	// ErrInvalidSyncTokenLen is returned when the pagination token is an
 	// invalid length
-	ErrInvalidSyncTokenLen = fmt.Errorf("Sync token has an invalid length")
+	ErrInvalidSyncTokenLen = fmt.Errorf("sync token has an invalid length")
 )
 
 type StateDelta struct {
diff --git a/userapi/internal/api.go b/userapi/internal/api.go
index 518edef4..4ff8f51d 100644
--- a/userapi/internal/api.go
+++ b/userapi/internal/api.go
@@ -177,10 +177,10 @@ func (a *UserInternalAPI) deviceListUpdate(userID string, deviceIDs []string) er
 		DeviceKeys: deviceKeys,
 	}, &uploadRes)
 	if uploadRes.Error != nil {
-		return fmt.Errorf("Failed to delete device keys: %v", uploadRes.Error)
+		return fmt.Errorf("failed to delete device keys: %v", uploadRes.Error)
 	}
 	if len(uploadRes.KeyErrors) > 0 {
-		return fmt.Errorf("Failed to delete device keys, key errors: %+v", uploadRes.KeyErrors)
+		return fmt.Errorf("failed to delete device keys, key errors: %+v", uploadRes.KeyErrors)
 	}
 	return nil
 }
@@ -242,10 +242,10 @@ func (a *UserInternalAPI) PerformDeviceUpdate(ctx context.Context, req *api.Perf
 			OnlyDisplayNameUpdates: true,
 		}, &uploadRes)
 		if uploadRes.Error != nil {
-			return fmt.Errorf("Failed to update device key display name: %v", uploadRes.Error)
+			return fmt.Errorf("failed to update device key display name: %v", uploadRes.Error)
 		}
 		if len(uploadRes.KeyErrors) > 0 {
-			return fmt.Errorf("Failed to update device key display name, key errors: %+v", uploadRes.KeyErrors)
+			return fmt.Errorf("failed to update device key display name, key errors: %+v", uploadRes.KeyErrors)
 		}
 	}
 	return nil
diff --git a/userapi/storage/accounts/interface.go b/userapi/storage/accounts/interface.go
index 887f7193..7af2f15f 100644
--- a/userapi/storage/accounts/interface.go
+++ b/userapi/storage/accounts/interface.go
@@ -67,4 +67,4 @@ type Database interface {
 
 // Err3PIDInUse is the error returned when trying to save an association involving
 // a third-party identifier which is already associated to a local user.
-var Err3PIDInUse = errors.New("This third-party identifier is already in use")
+var Err3PIDInUse = errors.New("this third-party identifier is already in use")
diff --git a/userapi/storage/accounts/postgres/storage.go b/userapi/storage/accounts/postgres/storage.go
index 6bddbfc3..2f829062 100644
--- a/userapi/storage/accounts/postgres/storage.go
+++ b/userapi/storage/accounts/postgres/storage.go
@@ -28,7 +28,6 @@ import (
 	"github.com/matrix-org/dendrite/setup/config"
 	"github.com/matrix-org/dendrite/userapi/api"
 	"github.com/matrix-org/dendrite/userapi/storage/accounts/postgres/deltas"
-	_ "github.com/matrix-org/dendrite/userapi/storage/accounts/postgres/deltas"
 	"github.com/matrix-org/gomatrixserverlib"
 	"golang.org/x/crypto/bcrypt"
 
@@ -271,7 +270,7 @@ func (d *Database) hashPassword(plaintext string) (hash string, err error) {
 
 // Err3PIDInUse is the error returned when trying to save an association involving
 // a third-party identifier which is already associated to a local user.
-var Err3PIDInUse = errors.New("This third-party identifier is already in use")
+var Err3PIDInUse = errors.New("this third-party identifier is already in use")
 
 // SaveThreePIDAssociation saves the association between a third party identifier
 // and a local Matrix user (identified by the user's ID's local part).
diff --git a/userapi/storage/accounts/sqlite3/storage.go b/userapi/storage/accounts/sqlite3/storage.go
index d752e3db..2b731b75 100644
--- a/userapi/storage/accounts/sqlite3/storage.go
+++ b/userapi/storage/accounts/sqlite3/storage.go
@@ -304,7 +304,7 @@ func (d *Database) hashPassword(plaintext string) (hash string, err error) {
 
 // Err3PIDInUse is the error returned when trying to save an association involving
 // a third-party identifier which is already associated to a local user.
-var Err3PIDInUse = errors.New("This third-party identifier is already in use")
+var Err3PIDInUse = errors.New("this third-party identifier is already in use")
 
 // SaveThreePIDAssociation saves the association between a third party identifier
 // and a local Matrix user (identified by the user's ID's local part).