docs: #322 preventing parallel same data update-related-sections (model+code/ no db migrations)

RMuseum/DbContext/RMuseumDbContext.cs

@@ -487,5 +487,11 @@ namespace RMuseum.DbContext
         /// </summary>
         public DbSet<GanjoorPoemSectionCorrection> GanjoorPoemSectionCorrections { get; set; }
 
+
+        /// <summary>
+        /// Updating related sections logs
+        /// </summary>
+        public DbSet<UpdatingRelSectsLog> UpdatingRelSectsLogs{ get; set; }
+
     }
 }

RMuseum/Models/Ganjoor/UpdatingRelSectsLog.cs

@@ -0,0 +1,30 @@
+using System;
+
+namespace RMuseum.Models.Ganjoor
+{
+    /// <summary>
+    /// Updating related sections logs
+    /// </summary>
+    public class UpdatingRelSectsLog
+    {
+        /// <summary>
+        /// id
+        /// </summary>
+        public int Id { get; set; }
+
+        /// <summary>
+        /// meter id
+        /// </summary>
+        public int MeterId { get; set; }
+
+        /// <summary>
+        /// rhyme letters
+        /// </summary>
+        public string RhymeLettes { get; set; }
+
+        /// <summary>
+        /// date/time
+        /// </summary>
+        public DateTime DateTime { get; set; }
+    }
+}

RMuseum/RMuseum.xml

@@ -2978,6 +2978,11 @@
             section correctons
             </summary>
         </member>
+        <member name="P:RMuseum.DbContext.RMuseumDbContext.UpdatingRelSectsLogs">
+            <summary>
+            Updating related sections logs
+            </summary>
+        </member>
         <member name="T:RMuseum.Models.Accounting.DonationExpenditure">
             <summary>
             donation expenditures
@@ -8096,6 +8101,31 @@
             couplets (virtual) for Masnavi
             </summary>
         </member>
+        <member name="T:RMuseum.Models.Ganjoor.UpdatingRelSectsLog">
+            <summary>
+            Updating related sections logs
+            </summary>
+        </member>
+        <member name="P:RMuseum.Models.Ganjoor.UpdatingRelSectsLog.Id">
+            <summary>
+            id
+            </summary>
+        </member>
+        <member name="P:RMuseum.Models.Ganjoor.UpdatingRelSectsLog.MeterId">
+            <summary>
+            meter id
+            </summary>
+        </member>
+        <member name="P:RMuseum.Models.Ganjoor.UpdatingRelSectsLog.RhymeLettes">
+            <summary>
+            rhyme letters
+            </summary>
+        </member>
+        <member name="P:RMuseum.Models.Ganjoor.UpdatingRelSectsLog.DateTime">
+            <summary>
+            date/time
+            </summary>
+        </member>
         <member name="T:RMuseum.Models.Ganjoor.VersePoemSectionType">
             <summary>
             how GanjoorPoemSection is linked to GanjoorVerse

RMuseum/Services/Implementation/GanjoorService-Partials/GanjoorService-RelatedSections.cs

@@ -53,6 +53,19 @@ namespace RMuseum.Services.Implementation
         {
             try
             {
+                if (await context.UpdatingRelSectsLogs.AsNoTracking()
+                    .Where(l => l.MeterId == metreId && l.RhymeLettes == rhyme && l.DateTime > DateTime.Now.AddMinutes(-10)).AnyAsync())
+                    return new RServiceResult<bool>(true);//prevent parallel updates for same data
+
+                var log = new UpdatingRelSectsLog()
+                {
+                    MeterId = metreId,
+                    RhymeLettes = rhyme,
+                    DateTime = DateTime.Now
+                };
+                context.Add(log);
+                await context.SaveChangesAsync();
+
                 var sections = await context.GanjoorPoemSections.AsNoTracking()
                     .Where(section => section.GanjoorMetreId == metreId && section.RhymeLetters == rhyme && section.SectionType == PoemSectionType.WholePoem)
                     .ToListAsync();
@@ -61,11 +74,18 @@ namespace RMuseum.Services.Implementation
                 {
                     await _UpdateSectionRelatedSectionsInfoNoSaveChanges(context, section, poetsImagesUrls, true);
                 }
+
+                var logs = await context.UpdatingRelSectsLogs
+                    .Where(l => l.MeterId == metreId && l.RhymeLettes == rhyme).ToListAsync();
+                context.RemoveRange(logs);
                 await context.SaveChangesAsync();
                 return new RServiceResult<bool>(true);
             }
             catch (Exception exp)
             {
+                var logs = await context.UpdatingRelSectsLogs
+                    .Where(l => l.MeterId == metreId && l.RhymeLettes == rhyme).ToListAsync();
+                context.RemoveRange(logs);
                 return new RServiceResult<bool>(false, exp.ToString());
             }
         }