Implement in-application mutex to reduce DB_LOCKED errors

scnserver/TODO.md

@@ -10,9 +10,7 @@
 
  - ios purchase verification
 
- - (!) use goext.ginWrapper
+ - exerr.New | exerr.Wrap
-
- - (!!!) local lock to prevent database-locked errors (there are a lot when one client malfunctions and starts sending a lot of notifications)
 
 #### UNSURE
 
@@ -55,11 +53,6 @@
 
  - Pagination for ListChannels / ListSubscriptions / ListClients / ListChannelSubscriptions / ListUserSubscriptions
 
- - Use only single struct for DB|Model|JSON
-     * needs sq.Converter implementation
-     * needs to handle joined data
-     * rfctime.Time...
-
  - use job superclass (copy from isi/bnet/?), reduce duplicate code
 
  - admin panel (especially errors and requests)

scnserver/api/handler/apiChannel.go

@@ -57,7 +57,7 @@ func (h APIHandler) ListChannels(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserRead(u.UserID); permResp != nil {
 			return *permResp
@@ -143,7 +143,7 @@ func (h APIHandler) GetChannel(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserRead(u.UserID); permResp != nil {
 			return *permResp
@@ -197,7 +197,7 @@ func (h APIHandler) CreateChannel(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp
@@ -304,7 +304,7 @@ func (h APIHandler) UpdateChannel(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp
@@ -428,7 +428,7 @@ func (h APIHandler) ListChannelMessages(pctx ginext.PreContext) ginext.HTTPRespo
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		trimmed := langext.Coalesce(q.Trimmed, true)
 

scnserver/api/handler/apiClient.go

@@ -41,7 +41,7 @@ func (h APIHandler) ListClients(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserRead(u.UserID); permResp != nil {
 			return *permResp
@@ -86,7 +86,7 @@ func (h APIHandler) GetClient(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserRead(u.UserID); permResp != nil {
 			return *permResp
@@ -141,7 +141,7 @@ func (h APIHandler) AddClient(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if !b.ClientType.Valid() {
 			return ginresp.APIError(g, 400, apierr.INVALID_CLIENTTYPE, "Invalid ClientType", nil)
@@ -196,7 +196,7 @@ func (h APIHandler) DeleteClient(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp
@@ -260,7 +260,7 @@ func (h APIHandler) UpdateClient(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp

scnserver/api/handler/apiKeyToken.go

@@ -43,7 +43,7 @@ func (h APIHandler) ListUserKeys(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp
@@ -88,7 +88,7 @@ func (h APIHandler) GetCurrentUserKey(pctx ginext.PreContext) ginext.HTTPRespons
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionAny(); permResp != nil {
 			return *permResp
@@ -142,7 +142,7 @@ func (h APIHandler) GetUserKey(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp
@@ -199,7 +199,7 @@ func (h APIHandler) UpdateUserKey(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp
@@ -299,7 +299,7 @@ func (h APIHandler) CreateUserKey(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		channels := langext.Coalesce(b.Channels, make([]models.ChannelID, 0))
 
@@ -366,7 +366,7 @@ func (h APIHandler) DeleteUserKey(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp

scnserver/api/handler/apiMessage.go

@@ -62,7 +62,7 @@ func (h APIHandler) ListMessages(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		trimmed := langext.Coalesce(q.Trimmed, true)
 
@@ -191,7 +191,7 @@ func (h APIHandler) GetMessage(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionAny(); permResp != nil {
 			return *permResp
@@ -263,7 +263,7 @@ func (h APIHandler) DeleteMessage(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionAny(); permResp != nil {
 			return *permResp

scnserver/api/handler/apiPreview.go

@@ -38,7 +38,7 @@ func (h APIHandler) GetUserPreview(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionAny(); permResp != nil {
 			return *permResp
@@ -84,7 +84,7 @@ func (h APIHandler) GetChannelPreview(pctx ginext.PreContext) ginext.HTTPRespons
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionAny(); permResp != nil {
 			return *permResp
@@ -130,7 +130,7 @@ func (h APIHandler) GetUserKeyPreview(pctx ginext.PreContext) ginext.HTTPRespons
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionAny(); permResp != nil {
 			return *permResp

scnserver/api/handler/apiSubscription.go

@@ -71,7 +71,7 @@ func (h APIHandler) ListUserSubscriptions(pctx ginext.PreContext) ginext.HTTPRes
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserRead(u.UserID); permResp != nil {
 			return *permResp
@@ -166,7 +166,7 @@ func (h APIHandler) ListChannelSubscriptions(pctx ginext.PreContext) ginext.HTTP
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserRead(u.UserID); permResp != nil {
 			return *permResp
@@ -219,7 +219,7 @@ func (h APIHandler) GetSubscription(pctx ginext.PreContext) ginext.HTTPResponse
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserRead(u.UserID); permResp != nil {
 			return *permResp
@@ -270,7 +270,7 @@ func (h APIHandler) CancelSubscription(pctx ginext.PreContext) ginext.HTTPRespon
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp
@@ -336,7 +336,7 @@ func (h APIHandler) CreateSubscription(pctx ginext.PreContext) ginext.HTTPRespon
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp
@@ -440,7 +440,7 @@ func (h APIHandler) UpdateSubscription(pctx ginext.PreContext) ginext.HTTPRespon
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp

scnserver/api/handler/apiUser.go

@@ -46,7 +46,7 @@ func (h APIHandler) CreateUser(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		var clientType models.ClientType
 		if !b.NoClient {
@@ -164,7 +164,7 @@ func (h APIHandler) GetUser(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserRead(u.UserID); permResp != nil {
 			return *permResp
@@ -220,7 +220,7 @@ func (h APIHandler) UpdateUser(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if permResp := ctx.CheckPermissionUserAdmin(u.UserID); permResp != nil {
 			return *permResp

scnserver/api/handler/common.go

@@ -5,6 +5,7 @@ import (
 	"blackforestbytes.com/simplecloudnotifier/api/ginresp"
 	"blackforestbytes.com/simplecloudnotifier/db/simplectx"
 	"blackforestbytes.com/simplecloudnotifier/logic"
+	"blackforestbytes.com/simplecloudnotifier/models"
 	"bytes"
 	"errors"
 	"github.com/gin-gonic/gin"
@@ -58,7 +59,7 @@ func (h CommonHandler) Ping(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		buf := new(bytes.Buffer)
 		_, _ = buf.ReadFrom(g.Request.Body)
@@ -102,7 +103,7 @@ func (h CommonHandler) DatabaseTest(pctx ginext.PreContext) ginext.HTTPResponse
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		libVersion, libVersionNumber, sourceID := sqlite3.Version()
 
@@ -142,7 +143,7 @@ func (h CommonHandler) Health(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		_, libVersionNumber, _ := sqlite3.Version()
 
@@ -217,7 +218,7 @@ func (h CommonHandler) Sleep(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		t0 := time.Now().Format(time.RFC3339Nano)
 
@@ -246,7 +247,7 @@ func (h CommonHandler) NoRoute(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		return ginext.JSON(http.StatusNotFound, gin.H{
 			"":           "================ ROUTE NOT FOUND ================",

scnserver/api/handler/compat.go

@@ -78,7 +78,7 @@ func (h CompatHandler) SendMessage(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		data := dataext.ObjectMerge(f, q)
 
@@ -154,7 +154,7 @@ func (h CompatHandler) Register(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		data := dataext.ObjectMerge(datb, datq)
 
@@ -277,7 +277,7 @@ func (h CompatHandler) Info(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		data := dataext.ObjectMerge(datb, datq)
 
@@ -386,7 +386,7 @@ func (h CompatHandler) Ack(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		data := dataext.ObjectMerge(datb, datq)
 
@@ -495,7 +495,7 @@ func (h CompatHandler) Requery(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		data := dataext.ObjectMerge(datb, datq)
 
@@ -616,7 +616,7 @@ func (h CompatHandler) Update(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		data := dataext.ObjectMerge(datb, datq)
 
@@ -747,7 +747,7 @@ func (h CompatHandler) Expand(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockRead, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		data := dataext.ObjectMerge(datb, datq)
 
@@ -867,7 +867,7 @@ func (h CompatHandler) Upgrade(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		data := dataext.ObjectMerge(datb, datq)
 

scnserver/api/handler/external.go

@@ -80,7 +80,7 @@ func (h ExternalHandler) UptimeKuma(pctx ginext.PreContext) ginext.HTTPResponse
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		if b.Heartbeat == nil {
 			return ginresp.APIError(g, 400, apierr.BINDFAIL_BODY_PARAM, "missing field 'heartbeat' in request body", nil)

scnserver/api/handler/message.go

@@ -83,7 +83,7 @@ func (h MessageHandler) SendMessage(pctx ginext.PreContext) ginext.HTTPResponse
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockReadWrite, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		// query has highest prio, then form, then json
 		data := dataext.ObjectMerge(dataext.ObjectMerge(b, f), q)

scnserver/api/handler/website.go

@@ -3,6 +3,7 @@ package handler
 import (
 	"blackforestbytes.com/simplecloudnotifier/api/ginresp"
 	"blackforestbytes.com/simplecloudnotifier/logic"
+	"blackforestbytes.com/simplecloudnotifier/models"
 	"blackforestbytes.com/simplecloudnotifier/website"
 	"errors"
 	"github.com/gin-gonic/gin"
@@ -35,7 +36,7 @@ func (h WebsiteHandler) Index(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockNone, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 		return h.serveAsset(g, "index.html", true)
 	})
 }
@@ -47,7 +48,7 @@ func (h WebsiteHandler) APIDocs(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockNone, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 		return h.serveAsset(g, "api.html", true)
 	})
 }
@@ -59,7 +60,7 @@ func (h WebsiteHandler) APIDocsMore(pctx ginext.PreContext) ginext.HTTPResponse
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockNone, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 		return h.serveAsset(g, "api_more.html", true)
 	})
 }
@@ -71,7 +72,7 @@ func (h WebsiteHandler) MessageSent(pctx ginext.PreContext) ginext.HTTPResponse
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockNone, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 		return h.serveAsset(g, "message_sent.html", true)
 	})
 }
@@ -83,7 +84,7 @@ func (h WebsiteHandler) FaviconIco(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockNone, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 		return h.serveAsset(g, "favicon.ico", false)
 	})
 }
@@ -95,7 +96,7 @@ func (h WebsiteHandler) FaviconPNG(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockNone, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 		return h.serveAsset(g, "favicon.png", false)
 	})
 }
@@ -107,7 +108,7 @@ func (h WebsiteHandler) Javascript(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockNone, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 		type uri struct {
 			Filename string `uri:"fn"`
@@ -134,7 +135,7 @@ func (h WebsiteHandler) CSS(pctx ginext.PreContext) ginext.HTTPResponse {
 	}
 	defer ctx.Cancel()
 
-	return h.app.DoRequest(ctx, g, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+	return h.app.DoRequest(ctx, g, models.TLockNone, func(ctx *logic.AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 		return h.serveAsset(g, "css/"+u.Filename, false)
 	})
 }

scnserver/go.mod

@@ -44,6 +44,7 @@ require (
 	github.com/rs/xid v1.6.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.2.12 // indirect
+	github.com/viney-shih/go-lock v1.1.2 // indirect
 	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
 	github.com/xdg-go/scram v1.1.2 // indirect
 	github.com/xdg-go/stringprep v1.0.4 // indirect

scnserver/go.sum

@@ -90,6 +90,7 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
@@ -100,6 +101,8 @@ github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS
 github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
 github.com/ugorji/go/codec v1.2.12 h1:9LC83zGrHhuUA9l16C9AHXAqEV/2wBQ4nkvumAE65EE=
 github.com/ugorji/go/codec v1.2.12/go.mod h1:UNopzCgEMSXjBc6AOMqYvWC1ktqTAfzJZUZgYf6w6lg=
+github.com/viney-shih/go-lock v1.1.2 h1:3TdGTiHZCPqBdTvFbQZQN/TRZzKF3KWw2rFEyKz3YqA=
+github.com/viney-shih/go-lock v1.1.2/go.mod h1:Yijm78Ljteb3kRiJrbLAxVntkUukGu5uzSxq/xV7OO8=
 github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
 github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
 github.com/xdg-go/scram v1.1.2 h1:FHX5I5B4i4hKRVRBCFRxq1iQRej7WO3hhBuJf+UUySY=
@@ -128,6 +131,7 @@ golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug
 golang.org/x/net v0.29.0 h1:5ORfpBpCs4HzDYoodCDBbwHzdR5UrLBZ3sOnUJmFoHo=
 golang.org/x/net v0.29.0/go.mod h1:gLkgy8jTGERgjzMic6DS9+SP0ajcu6Xu3Orq/SpETg0=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
 golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
@@ -162,6 +166,7 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/loremipsum.v1 v1.1.2 h1:12APklfJKuGszqZsrArW5QoQh03/W+qyCCjvnDuS6Tw=
 gopkg.in/loremipsum.v1 v1.1.2/go.mod h1:TuRvzFuzuejXj+odBU6Tubp/EPUyGb9wmSvHenyP2Ts=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

scnserver/logic/application.go

@@ -10,6 +10,7 @@ import (
 	"context"
 	"errors"
 	"github.com/rs/zerolog/log"
+	golock "github.com/viney-shih/go-lock"
 	"gogs.mikescher.com/BlackForestBytes/goext/ginext"
 	"gogs.mikescher.com/BlackForestBytes/goext/rext"
 	"gogs.mikescher.com/BlackForestBytes/goext/syncext"
@@ -38,6 +39,7 @@ type Application struct {
 	Port             string
 	IsRunning        *syncext.AtomicBool
 	RequestLogQueue  chan models.RequestLog
+	MainDatabaseLock golock.RWMutex
 }
 
 func NewApp(db *DBPool) *Application {
@@ -46,6 +48,7 @@ func NewApp(db *DBPool) *Application {
 		stopChan:         make(chan bool),
 		IsRunning:        syncext.NewAtomicBool(false),
 		RequestLogQueue:  make(chan models.RequestLog, 1024),
+		MainDatabaseLock: golock.NewCASMutex(),
 	}
 }
 

scnserver/logic/request.go

@@ -23,7 +23,7 @@ type RequestOptions struct {
 	IgnoreWrongContentType bool
 }
 
-func (app *Application) DoRequest(gectx *ginext.AppContext, g *gin.Context, fn func(ctx *AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
+func (app *Application) DoRequest(gectx *ginext.AppContext, g *gin.Context, lockmode models.TransactionLockMode, fn func(ctx *AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
 	maxRetry := scn.Conf.RequestMaxRetry
 	retrySleep := scn.Conf.RequestRetrySleep
@@ -40,6 +40,29 @@ func (app *Application) DoRequest(gectx *ginext.AppContext, g *gin.Context, fn f
 
 		wrap, stackTrace, panicObj := callPanicSafe(func(ctx *AppContext, finishSuccess func(r ginext.HTTPResponse) ginext.HTTPResponse) ginext.HTTPResponse {
 
+			dl, ok := ctx.Deadline()
+			if !ok {
+				dl = time.Now().Add(time.Second * 5)
+			}
+
+			if lockmode == models.TLockRead {
+
+				islock := app.MainDatabaseLock.RTryLockWithTimeout(dl.Sub(time.Now()))
+				if !islock {
+					return ginresp.APIError(g, 500, apierr.INTERNAL_EXCEPTION, "Failed to lock {MainDatabaseLock} [ro]", nil)
+				}
+				defer app.MainDatabaseLock.RUnlock()
+
+			} else if lockmode == models.TLockReadWrite {
+
+				islock := app.MainDatabaseLock.TryLockWithTimeout(dl.Sub(time.Now()))
+				if !islock {
+					return ginresp.APIError(g, 500, apierr.INTERNAL_EXCEPTION, "Failed to lock {MainDatabaseLock} [rw]", nil)
+				}
+				defer app.MainDatabaseLock.Unlock()
+
+			}
+
 			authheader := g.GetHeader("Authorization")
 
 			perm, err := app.getPermissions(actx, authheader)

scnserver/models/enums_gen.go

@@ -5,7 +5,7 @@ package models
 import "gogs.mikescher.com/BlackForestBytes/goext/langext"
 import "gogs.mikescher.com/BlackForestBytes/goext/enums"
 
-const ChecksumEnumGenerator = "8ffad0d7406eb7f17cbbfeff6fee6e6fa7156470203934ebd220c824e6e15e09" // GoExtVersion: 0.0.511
+const ChecksumEnumGenerator = "902919af7c6d46bd6701b33e47308bad93d50cd10cdacaac739e5242819c4d7b" // GoExtVersion: 0.0.512
 
 // ================================ ClientType ================================
 //
@@ -283,6 +283,86 @@ func TokenPermValuesDescriptionMeta() []enums.EnumDescriptionMetaValue {
 	}
 }
 
+// ================================ TransactionLockMode ================================
+//
+// File:       lock.go
+// StringEnum: true
+// DescrEnum:  false
+// DataEnum:   false
+//
+
+var __TransactionLockModeValues = []TransactionLockMode{
+	TLockNone,
+	TLockRead,
+	TLockReadWrite,
+}
+
+var __TransactionLockModeVarnames = map[TransactionLockMode]string{
+	TLockNone:      "TLockNone",
+	TLockRead:      "TLockRead",
+	TLockReadWrite: "TLockReadWrite",
+}
+
+func (e TransactionLockMode) Valid() bool {
+	return langext.InArray(e, __TransactionLockModeValues)
+}
+
+func (e TransactionLockMode) Values() []TransactionLockMode {
+	return __TransactionLockModeValues
+}
+
+func (e TransactionLockMode) ValuesAny() []any {
+	return langext.ArrCastToAny(__TransactionLockModeValues)
+}
+
+func (e TransactionLockMode) ValuesMeta() []enums.EnumMetaValue {
+	return TransactionLockModeValuesMeta()
+}
+
+func (e TransactionLockMode) String() string {
+	return string(e)
+}
+
+func (e TransactionLockMode) VarName() string {
+	if d, ok := __TransactionLockModeVarnames[e]; ok {
+		return d
+	}
+	return ""
+}
+
+func (e TransactionLockMode) TypeName() string {
+	return "TransactionLockMode"
+}
+
+func (e TransactionLockMode) PackageName() string {
+	return "models"
+}
+
+func (e TransactionLockMode) Meta() enums.EnumMetaValue {
+	return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: nil}
+}
+
+func ParseTransactionLockMode(vv string) (TransactionLockMode, bool) {
+	for _, ev := range __TransactionLockModeValues {
+		if string(ev) == vv {
+			return ev, true
+		}
+	}
+	return "", false
+}
+
+func TransactionLockModeValues() []TransactionLockMode {
+	return __TransactionLockModeValues
+}
+
+func TransactionLockModeValuesMeta() []enums.EnumMetaValue {
+	return []enums.EnumMetaValue{
+		TLockNone.Meta(),
+		TLockRead.Meta(),
+		TLockReadWrite.Meta(),
+	}
+}
+
 // ================================ ================= ================================
 
 func AllPackageEnums() []enums.Enum {
@@ -290,5 +370,6 @@ func AllPackageEnums() []enums.Enum {
 		ClientTypeAndroid,   // ClientType
 		DeliveryStatusRetry, // DeliveryStatus
 		PermAdmin,           // TokenPerm
+		TLockNone,           // TransactionLockMode
 	}
 }

scnserver/models/ids_gen.go

@@ -15,7 +15,7 @@ import "reflect"
 import "regexp"
 import "strings"
 
-const ChecksumCharsetIDGenerator = "8ffad0d7406eb7f17cbbfeff6fee6e6fa7156470203934ebd220c824e6e15e09" // GoExtVersion: 0.0.511
+const ChecksumCharsetIDGenerator = "902919af7c6d46bd6701b33e47308bad93d50cd10cdacaac739e5242819c4d7b" // GoExtVersion: 0.0.512
 
 const idlen = 24
 

scnserver/models/lock.go

@@ -0,0 +1,9 @@
+package models
+
+type TransactionLockMode string //@enum:type
+
+const (
+	TLockNone      TransactionLockMode = "NONE"
+	TLockRead      TransactionLockMode = "READ"
+	TLockReadWrite TransactionLockMode = "READ_WRITE"
+)

scnserver/swagger/swagger.json

@@ -19,63 +19,39 @@
                 "parameters": [
                     {
                         "type": "string",
-                        "example": "test",
-                        "name": "channel",
-                        "in": "query"
-                    },
-                    {
-                        "type": "string",
-                        "example": "This is a message",
                         "name": "content",
                         "in": "query"
                     },
                     {
                         "type": "string",
-                        "example": "P3TNH8mvv14fm",
-                        "name": "key",
-                        "in": "query"
-                    },
-                    {
-                        "type": "string",
-                        "example": "db8b0e6a-a08c-4646",
                         "name": "msg_id",
                         "in": "query"
                     },
                     {
-                        "enum": [
-                            0,
-                            1,
-                            2
-                        ],
                         "type": "integer",
-                        "example": 1,
                         "name": "priority",
                         "in": "query"
                     },
-                    {
-                        "type": "string",
-                        "example": "example-server",
-                        "name": "sender_name",
-                        "in": "query"
-                    },
                     {
                         "type": "number",
-                        "example": 1669824037,
                         "name": "timestamp",
                         "in": "query"
                     },
                     {
                         "type": "string",
-                        "example": "Hello World",
                         "name": "title",
                         "in": "query"
                     },
                     {
-                        "type": "string",
+                        "type": "integer",
-                        "example": "7725",
                         "name": "user_id",
                         "in": "query"
                     },
+                    {
+                        "type": "string",
+                        "name": "user_key",
+                        "in": "query"
+                    },
                     {
                         "description": " ",
                         "name": "post_body",
@@ -86,62 +62,38 @@
                     },
                     {
                         "type": "string",
-                        "example": "test",
-                        "name": "channel",
-                        "in": "formData"
-                    },
-                    {
-                        "type": "string",
-                        "example": "This is a message",
                         "name": "content",
                         "in": "formData"
                     },
                     {
                         "type": "string",
-                        "example": "P3TNH8mvv14fm",
-                        "name": "key",
-                        "in": "formData"
-                    },
-                    {
-                        "type": "string",
-                        "example": "db8b0e6a-a08c-4646",
                         "name": "msg_id",
                         "in": "formData"
                     },
                     {
-                        "enum": [
-                            0,
-                            1,
-                            2
-                        ],
                         "type": "integer",
-                        "example": 1,
                         "name": "priority",
                         "in": "formData"
                     },
-                    {
-                        "type": "string",
-                        "example": "example-server",
-                        "name": "sender_name",
-                        "in": "formData"
-                    },
                     {
                         "type": "number",
-                        "example": 1669824037,
                         "name": "timestamp",
                         "in": "formData"
                     },
                     {
                         "type": "string",
-                        "example": "Hello World",
                         "name": "title",
                         "in": "formData"
                     },
                     {
-                        "type": "string",
+                        "type": "integer",
-                        "example": "7725",
                         "name": "user_id",
                         "in": "formData"
+                    },
+                    {
+                        "type": "string",
+                        "name": "user_key",
+                        "in": "formData"
                     }
                 ],
                 "responses": {
@@ -2765,63 +2717,39 @@
                 "parameters": [
                     {
                         "type": "string",
-                        "example": "test",
-                        "name": "channel",
-                        "in": "query"
-                    },
-                    {
-                        "type": "string",
-                        "example": "This is a message",
                         "name": "content",
                         "in": "query"
                     },
                     {
                         "type": "string",
-                        "example": "P3TNH8mvv14fm",
-                        "name": "key",
-                        "in": "query"
-                    },
-                    {
-                        "type": "string",
-                        "example": "db8b0e6a-a08c-4646",
                         "name": "msg_id",
                         "in": "query"
                     },
                     {
-                        "enum": [
-                            0,
-                            1,
-                            2
-                        ],
                         "type": "integer",
-                        "example": 1,
                         "name": "priority",
                         "in": "query"
                     },
-                    {
-                        "type": "string",
-                        "example": "example-server",
-                        "name": "sender_name",
-                        "in": "query"
-                    },
                     {
                         "type": "number",
-                        "example": 1669824037,
                         "name": "timestamp",
                         "in": "query"
                     },
                     {
                         "type": "string",
-                        "example": "Hello World",
                         "name": "title",
                         "in": "query"
                     },
                     {
-                        "type": "string",
+                        "type": "integer",
-                        "example": "7725",
                         "name": "user_id",
                         "in": "query"
                     },
+                    {
+                        "type": "string",
+                        "name": "user_key",
+                        "in": "query"
+                    },
                     {
                         "description": " ",
                         "name": "post_body",
@@ -2832,62 +2760,38 @@
                     },
                     {
                         "type": "string",
-                        "example": "test",
-                        "name": "channel",
-                        "in": "formData"
-                    },
-                    {
-                        "type": "string",
-                        "example": "This is a message",
                         "name": "content",
                         "in": "formData"
                     },
                     {
                         "type": "string",
-                        "example": "P3TNH8mvv14fm",
-                        "name": "key",
-                        "in": "formData"
-                    },
-                    {
-                        "type": "string",
-                        "example": "db8b0e6a-a08c-4646",
                         "name": "msg_id",
                         "in": "formData"
                     },
                     {
-                        "enum": [
-                            0,
-                            1,
-                            2
-                        ],
                         "type": "integer",
-                        "example": 1,
                         "name": "priority",
                         "in": "formData"
                     },
-                    {
-                        "type": "string",
-                        "example": "example-server",
-                        "name": "sender_name",
-                        "in": "formData"
-                    },
                     {
                         "type": "number",
-                        "example": 1669824037,
                         "name": "timestamp",
                         "in": "formData"
                     },
                     {
                         "type": "string",
-                        "example": "Hello World",
                         "name": "title",
                         "in": "formData"
                     },
                     {
-                        "type": "string",
+                        "type": "integer",
-                        "example": "7725",
                         "name": "user_id",
                         "in": "formData"
+                    },
+                    {
+                        "type": "string",
+                        "name": "user_key",
+                        "in": "formData"
                     }
                 ],
                 "responses": {
@@ -2935,121 +2839,73 @@
                 "parameters": [
                     {
                         "type": "string",
-                        "example": "test",
-                        "name": "channel",
-                        "in": "query"
-                    },
-                    {
-                        "type": "string",
-                        "example": "This is a message",
                         "name": "content",
                         "in": "query"
                     },
                     {
                         "type": "string",
-                        "example": "P3TNH8mvv14fm",
-                        "name": "key",
-                        "in": "query"
-                    },
-                    {
-                        "type": "string",
-                        "example": "db8b0e6a-a08c-4646",
                         "name": "msg_id",
                         "in": "query"
                     },
                     {
-                        "enum": [
-                            0,
-                            1,
-                            2
-                        ],
                         "type": "integer",
-                        "example": 1,
                         "name": "priority",
                         "in": "query"
                     },
-                    {
-                        "type": "string",
-                        "example": "example-server",
-                        "name": "sender_name",
-                        "in": "query"
-                    },
                     {
                         "type": "number",
-                        "example": 1669824037,
                         "name": "timestamp",
                         "in": "query"
                     },
                     {
                         "type": "string",
-                        "example": "Hello World",
                         "name": "title",
                         "in": "query"
                     },
                     {
-                        "type": "string",
+                        "type": "integer",
-                        "example": "7725",
                         "name": "user_id",
                         "in": "query"
                     },
                     {
                         "type": "string",
-                        "example": "test",
+                        "name": "user_key",
-                        "name": "channel",
+                        "in": "query"
-                        "in": "formData"
                     },
                     {
                         "type": "string",
-                        "example": "This is a message",
                         "name": "content",
                         "in": "formData"
                     },
                     {
                         "type": "string",
-                        "example": "P3TNH8mvv14fm",
-                        "name": "key",
-                        "in": "formData"
-                    },
-                    {
-                        "type": "string",
-                        "example": "db8b0e6a-a08c-4646",
                         "name": "msg_id",
                         "in": "formData"
                     },
                     {
-                        "enum": [
-                            0,
-                            1,
-                            2
-                        ],
                         "type": "integer",
-                        "example": 1,
                         "name": "priority",
                         "in": "formData"
                     },
-                    {
-                        "type": "string",
-                        "example": "example-server",
-                        "name": "sender_name",
-                        "in": "formData"
-                    },
                     {
                         "type": "number",
-                        "example": 1669824037,
                         "name": "timestamp",
                         "in": "formData"
                     },
                     {
                         "type": "string",
-                        "example": "Hello World",
                         "name": "title",
                         "in": "formData"
                     },
                     {
-                        "type": "string",
+                        "type": "integer",
-                        "example": "7725",
                         "name": "user_id",
                         "in": "formData"
+                    },
+                    {
+                        "type": "string",
+                        "name": "user_key",
+                        "in": "formData"
                     }
                 ],
                 "responses": {
@@ -3547,46 +3403,26 @@
         "handler.SendMessage.combined": {
             "type": "object",
             "properties": {
-                "channel": {
-                    "type": "string",
-                    "example": "test"
-                },
                 "content": {
-                    "type": "string",
+                    "type": "string"
-                    "example": "This is a message"
-                },
-                "key": {
-                    "type": "string",
-                    "example": "P3TNH8mvv14fm"
                 },
                 "msg_id": {
-                    "type": "string",
+                    "type": "string"
-                    "example": "db8b0e6a-a08c-4646"
                 },
                 "priority": {
-                    "type": "integer",
+                    "type": "integer"
-                    "enum": [
-                        0,
-                        1,
-                        2
-                    ],
-                    "example": 1
-                },
-                "sender_name": {
-                    "type": "string",
-                    "example": "example-server"
                 },
                 "timestamp": {
-                    "type": "number",
+                    "type": "number"
-                    "example": 1669824037
                 },
                 "title": {
-                    "type": "string",
+                    "type": "string"
-                    "example": "Hello World"
                 },
                 "user_id": {
-                    "type": "string",
+                    "type": "integer"
-                    "example": "7725"
+                },
+                "user_key": {
+                    "type": "string"
                 }
             }
         },
@@ -3615,7 +3451,7 @@
                     "type": "integer"
                 },
                 "scn_msg_id": {
-                    "type": "string"
+                    "type": "integer"
                 },
                 "success": {
                     "type": "boolean"
@@ -4035,6 +3871,9 @@
                 "trimmed": {
                     "type": "boolean"
                 },
+                "used_key_id": {
+                    "type": "string"
+                },
                 "usr_message_id": {
                     "type": "string"
                 }

scnserver/swagger/swagger.yaml

@@ -329,36 +329,19 @@ definitions:
     type: object
   handler.SendMessage.combined:
     properties:
-      channel:
-        example: test
-        type: string
       content:
-        example: This is a message
-        type: string
-      key:
-        example: P3TNH8mvv14fm
         type: string
       msg_id:
-        example: db8b0e6a-a08c-4646
         type: string
       priority:
-        enum:
-        - 0
-        - 1
-        - 2
-        example: 1
         type: integer
-      sender_name:
-        example: example-server
-        type: string
       timestamp:
-        example: 1669824037
         type: number
       title:
-        example: Hello World
         type: string
       user_id:
-        example: "7725"
+        type: integer
+      user_key:
         type: string
     type: object
   handler.SendMessage.response:
@@ -378,7 +361,7 @@ definitions:
       quota_max:
         type: integer
       scn_msg_id:
-        type: string
+        type: integer
       success:
         type: boolean
       suppress_send:
@@ -656,6 +639,8 @@ definitions:
         type: string
       trimmed:
         type: boolean
+      used_key_id:
+        type: string
       usr_message_id:
         type: string
     type: object
@@ -800,90 +785,52 @@ paths:
       description: All parameter can be set via query-parameter or the json body.
         Only UserID, UserKey and Title are required
       parameters:
-      - example: test
+      - in: query
-        in: query
-        name: channel
-        type: string
-      - example: This is a message
-        in: query
         name: content
         type: string
-      - example: P3TNH8mvv14fm
+      - in: query
-        in: query
-        name: key
-        type: string
-      - example: db8b0e6a-a08c-4646
-        in: query
         name: msg_id
         type: string
-      - enum:
+      - in: query
-        - 0
-        - 1
-        - 2
-        example: 1
-        in: query
         name: priority
         type: integer
-      - example: example-server
+      - in: query
-        in: query
-        name: sender_name
-        type: string
-      - example: 1669824037
-        in: query
         name: timestamp
         type: number
-      - example: Hello World
+      - in: query
-        in: query
         name: title
         type: string
-      - example: "7725"
+      - in: query
-        in: query
         name: user_id
+        type: integer
+      - in: query
+        name: user_key
         type: string
       - description: ' '
         in: body
         name: post_body
         schema:
           $ref: '#/definitions/handler.SendMessage.combined'
-      - example: test
+      - in: formData
-        in: formData
-        name: channel
-        type: string
-      - example: This is a message
-        in: formData
         name: content
         type: string
-      - example: P3TNH8mvv14fm
+      - in: formData
-        in: formData
-        name: key
-        type: string
-      - example: db8b0e6a-a08c-4646
-        in: formData
         name: msg_id
         type: string
-      - enum:
+      - in: formData
-        - 0
-        - 1
-        - 2
-        example: 1
-        in: formData
         name: priority
         type: integer
-      - example: example-server
+      - in: formData
-        in: formData
-        name: sender_name
-        type: string
-      - example: 1669824037
-        in: formData
         name: timestamp
         type: number
-      - example: Hello World
+      - in: formData
-        in: formData
         name: title
         type: string
-      - example: "7725"
+      - in: formData
-        in: formData
         name: user_id
+        type: integer
+      - in: formData
+        name: user_key
         type: string
       responses:
         "200":
@@ -2683,90 +2630,52 @@ paths:
       description: All parameter can be set via query-parameter or the json body.
         Only UserID, UserKey and Title are required
       parameters:
-      - example: test
+      - in: query
-        in: query
-        name: channel
-        type: string
-      - example: This is a message
-        in: query
         name: content
         type: string
-      - example: P3TNH8mvv14fm
+      - in: query
-        in: query
-        name: key
-        type: string
-      - example: db8b0e6a-a08c-4646
-        in: query
         name: msg_id
         type: string
-      - enum:
+      - in: query
-        - 0
-        - 1
-        - 2
-        example: 1
-        in: query
         name: priority
         type: integer
-      - example: example-server
+      - in: query
-        in: query
-        name: sender_name
-        type: string
-      - example: 1669824037
-        in: query
         name: timestamp
         type: number
-      - example: Hello World
+      - in: query
-        in: query
         name: title
         type: string
-      - example: "7725"
+      - in: query
-        in: query
         name: user_id
+        type: integer
+      - in: query
+        name: user_key
         type: string
       - description: ' '
         in: body
         name: post_body
         schema:
           $ref: '#/definitions/handler.SendMessage.combined'
-      - example: test
+      - in: formData
-        in: formData
-        name: channel
-        type: string
-      - example: This is a message
-        in: formData
         name: content
         type: string
-      - example: P3TNH8mvv14fm
+      - in: formData
-        in: formData
-        name: key
-        type: string
-      - example: db8b0e6a-a08c-4646
-        in: formData
         name: msg_id
         type: string
-      - enum:
+      - in: formData
-        - 0
-        - 1
-        - 2
-        example: 1
-        in: formData
         name: priority
         type: integer
-      - example: example-server
+      - in: formData
-        in: formData
-        name: sender_name
-        type: string
-      - example: 1669824037
-        in: formData
         name: timestamp
         type: number
-      - example: Hello World
+      - in: formData
-        in: formData
         name: title
         type: string
-      - example: "7725"
+      - in: formData
-        in: formData
         name: user_id
+        type: integer
+      - in: formData
+        name: user_key
         type: string
       responses:
         "200":
@@ -2799,85 +2708,47 @@ paths:
       description: All parameter can be set via query-parameter or form-data body.
         Only UserID, UserKey and Title are required
       parameters:
-      - example: test
+      - in: query
-        in: query
-        name: channel
-        type: string
-      - example: This is a message
-        in: query
         name: content
         type: string
-      - example: P3TNH8mvv14fm
+      - in: query
-        in: query
-        name: key
-        type: string
-      - example: db8b0e6a-a08c-4646
-        in: query
         name: msg_id
         type: string
-      - enum:
+      - in: query
-        - 0
-        - 1
-        - 2
-        example: 1
-        in: query
         name: priority
         type: integer
-      - example: example-server
+      - in: query
-        in: query
-        name: sender_name
-        type: string
-      - example: 1669824037
-        in: query
         name: timestamp
         type: number
-      - example: Hello World
+      - in: query
-        in: query
         name: title
         type: string
-      - example: "7725"
+      - in: query
-        in: query
         name: user_id
+        type: integer
+      - in: query
+        name: user_key
         type: string
-      - example: test
+      - in: formData
-        in: formData
-        name: channel
-        type: string
-      - example: This is a message
-        in: formData
         name: content
         type: string
-      - example: P3TNH8mvv14fm
+      - in: formData
-        in: formData
-        name: key
-        type: string
-      - example: db8b0e6a-a08c-4646
-        in: formData
         name: msg_id
         type: string
-      - enum:
+      - in: formData
-        - 0
-        - 1
-        - 2
-        example: 1
-        in: formData
         name: priority
         type: integer
-      - example: example-server
+      - in: formData
-        in: formData
-        name: sender_name
-        type: string
-      - example: 1669824037
-        in: formData
         name: timestamp
         type: number
-      - example: Hello World
+      - in: formData
-        in: formData
         name: title
         type: string
-      - example: "7725"
+      - in: formData
-        in: formData
         name: user_id
+        type: integer
+      - in: formData
+        name: user_key
         type: string
       responses:
         "200":

scnserver/test/send_test.go

@@ -7,6 +7,7 @@ import (
 	tt "blackforestbytes.com/simplecloudnotifier/test/util"
 	"fmt"
 	"github.com/gin-gonic/gin"
+	"math/rand/v2"
 	"net/url"
 	"strings"
 	"testing"
@@ -1341,8 +1342,14 @@ func TestSendParallel(t *testing.T) {
 
 	uid := r0["user_id"].(string)
 	sendtok := r0["send_key"].(string)
+	admintok := r0["admin_key"].(string)
 
-	count := 128
+	count := 512
+
+	chanNames := make([]string, 0)
+	for i := 0; i < count/50; i++ {
+		chanNames = append(chanNames, tt.ShortLipsum0(1))
+	}
 
 	sem := make(chan tt.Void, count) // semaphore pattern
 	for i := 0; i < count; i++ {
@@ -1350,11 +1357,31 @@ func TestSendParallel(t *testing.T) {
 			defer func() {
 				sem <- tt.Void{}
 			}()
+
+			if rand.Int()%2 == 0 {
 				tt.RequestPost[gin.H](t, baseUrl, "/", gin.H{
 					"key":     sendtok,
 					"user_id": uid,
 					"title":   tt.ShortLipsum0(2),
 				})
+			} else {
+				tt.RequestPost[gin.H](t, baseUrl, "/", gin.H{
+					"key":     sendtok,
+					"user_id": uid,
+					"title":   tt.ShortLipsum0(2),
+					"channel": chanNames[rand.IntN(len(chanNames))],
+				})
+			}
+
+			tt.RequestGet[tt.Void](t, baseUrl, fmt.Sprintf("/api/ping"))
+
+			tt.RequestAuthGet[gin.H](t, admintok, baseUrl, fmt.Sprintf("/api/v2/messages"))
+
+			tt.RequestAuthGet[gin.H](t, admintok, baseUrl, "/api/v2/users/"+uid)
+
+			tt.RequestAuthGet[gin.H](t, admintok, baseUrl, "/api/v2/users/"+uid+"/channels")
+
+			tt.RequestAuthGet[gin.H](t, admintok, baseUrl, "/api/v2/users/"+uid+"/clients")
 		}()
 	}
 	// wait for goroutines to finish