Improved exception handling.

backend/src/Squidex.Infrastructure.MongoDb/Assets/MongoGridFsAssetStore.cs

@@ -114,7 +114,7 @@ namespace Squidex.Infrastructure.Assets
 
                 await bucket.UploadFromStreamAsync(name, name, stream, cancellationToken: ct);
             }
-            catch (MongoWriteException ex) when (ex.WriteError.Category == ServerErrorCategory.DuplicateKey)
+            catch (MongoWriteException ex) when (ex.WriteError?.Category == ServerErrorCategory.DuplicateKey)
             {
                 throw new AssetAlreadyExistsException(fileName);
             }

backend/src/Squidex.Infrastructure.MongoDb/EventSourcing/MongoEventStore.cs

@@ -41,7 +41,7 @@ namespace Squidex.Infrastructure.EventSourcing
 
         protected override MongoCollectionSettings CollectionSettings()
         {
-            return new MongoCollectionSettings { ReadPreference = ReadPreference.Primary, WriteConcern = WriteConcern.WMajority };
+            return new MongoCollectionSettings { WriteConcern = WriteConcern.WMajority };
         }
 
         protected override Task SetupCollectionAsync(IMongoCollection<MongoEventCommit> collection, CancellationToken ct = default)

backend/src/Squidex.Infrastructure.MongoDb/MongoDb/MongoExtensions.cs

@@ -40,16 +40,11 @@ namespace Squidex.Infrastructure.MongoDb
             {
                 await collection.InsertOneAsync(document, null, ct);
             }
-            catch (MongoWriteException ex)
-            {
-                if (ex.WriteError.Category == ServerErrorCategory.DuplicateKey)
+            catch (MongoWriteException ex) when (ex.WriteError?.Category == ServerErrorCategory.DuplicateKey)
             {
                 return false;
             }
 
-                throw;
-            }
-
             return true;
         }
 
@@ -108,9 +103,7 @@ namespace Squidex.Infrastructure.MongoDb
                     await collection.UpdateOneAsync(x => x.Id.Equals(key), update, Upsert);
                 }
             }
-            catch (MongoWriteException ex)
-            {
-                if (ex.WriteError.Category == ServerErrorCategory.DuplicateKey)
+            catch (MongoWriteException ex) when (ex.WriteError?.Category == ServerErrorCategory.DuplicateKey)
             {
                 var existingVersion =
                     await collection.Find(x => x.Id.Equals(key)).Only(x => x.Id, x => x.Version)
@@ -122,10 +115,9 @@ namespace Squidex.Infrastructure.MongoDb
 
                     throw new InconsistentStateException(existingVersion[versionField].AsInt64, oldVersion, ex);
                 }
-                }
                 else
                 {
-                    throw;
+                    throw new InconsistentStateException(EtagVersion.Any, oldVersion, ex);
                 }
             }
         }
@@ -145,9 +137,7 @@ namespace Squidex.Infrastructure.MongoDb
                     await collection.ReplaceOneAsync(x => x.Id.Equals(key), doc, UpsertReplace);
                 }
             }
-            catch (MongoWriteException ex)
-            {
-                if (ex.WriteError.Category == ServerErrorCategory.DuplicateKey)
+            catch (MongoWriteException ex) when (ex.WriteError?.Category == ServerErrorCategory.DuplicateKey)
             {
                 var existingVersion =
                     await collection.Find(x => x.Id.Equals(key)).Only(x => x.Id, x => x.Version)
@@ -159,10 +149,9 @@ namespace Squidex.Infrastructure.MongoDb
 
                     throw new InconsistentStateException(existingVersion[versionField].AsInt64, oldVersion, ex);
                 }
-                }
                 else
                 {
-                    throw;
+                    throw new InconsistentStateException(EtagVersion.Any, oldVersion, ex);
                 }
             }
         }