public static async Task <bool> EnsureDataCreatedAsync([NotNull] MobileDbContext dbContext,
CancellationToken cancellationToken)
=> (await DbOperationsWrappers.PerformSafelyAsync(dbContext, async db =>
{
await db.Database.MigrateAsync(cancellationToken);
Logger.LogDebug(LogScope, "Migration performed.");
if (await db.Tasks.AnyAsync(cancellationToken))
{
Logger.LogDebug(LogScope, "Data already created.");
return(new ErrorOr <Nothing>(new Nothing()));
}
var rnd = new Random();
var tasks = new List <TaskEntity>();
for (var i = 1; i <= 10; i++)
{
var task = new TaskEntity
{
Title = $"Task {i}",
Description = $"Task {i} description. {Guid.NewGuid().ToString()}",
Start = new DateTime(2017, 10, rnd.Next(1, 10)),
End = new DateTime(2017, 10, rnd.Next(11, 30))
};
if (rnd.NextDouble() > 0.6)
{
for (var j = 0; j < rnd.Next(1, 3); j++)
{
task.Notes.Add(new Note
{
Created = DateTime.Now,
Text = $"{task.Title} note {j} : {Guid.NewGuid()}"
});
}
}
tasks.Add(task);
}
db.Tasks.AddRange(tasks);
await db.SaveChangesAsync(cancellationToken);
Logger.LogDebug(LogScope, "Tasks saved.");
return(new ErrorOr <Nothing>(new Nothing()));
})).IsSuccess;
public static async Task <ErrorOr <TSuccess> > PerformSafelyAsync <TSuccess>(MobileDbContext mobileDbContext, Func <MobileDbContext, Task <ErrorOr <TSuccess> > > operation)
where TSuccess : class
{
try
{
return(await operation.Invoke(mobileDbContext));
}
catch (OperationCanceledException operationCanceledException)
{
return(new ErrorOr <TSuccess>(new ErrorModel(operationCanceledException)));
}
catch (Exception exception)
{
return(new ErrorOr <TSuccess>(new ErrorModel(exception)));
}
}
public static async Task <ErrorOr <TSuccess> > PerformSafelyAsync <TSuccess>(MobileDbContext mobileDbContext, Func <MobileDbContext, Task <ErrorOr <TSuccess> > > operation)
where TSuccess : class
{
try
{
return(await operation.Invoke(mobileDbContext));
}
catch (OperationCanceledException operationCanceledException)
{
Logger.LogDebug(LogScope, "Database operation cancelled.");
return(new ErrorOr <TSuccess>(new ErrorModel(operationCanceledException)));
}
catch (Exception exception)
{
Logger.LogEntry(LogScope, LogLevel.Error, "Database operation failed.");
Logger.LogException(LogScope, LogLevel.Error, exception);
return(new ErrorOr <TSuccess>(new ErrorModel(exception)));
}
}