/// <summary>
/// Retry when an Exception has occured
/// </summary>
/// <param name="updateStatusContent"></param>
/// <param name="e">Exception</param>
private async Task RetrySaveChangesAsync(FileIndexItem updateStatusContent, Exception e)
{
_logger?.LogInformation(e, "[RetrySaveChangesAsync] retry catch-ed exception ");
_logger?.LogInformation("[RetrySaveChangesAsync] next retry ~>");
async Task LocalRetrySaveChangesAsyncQuery()
{
// InvalidOperationException: A second operation started on this context before a previous operation completed.
// https://go.microsoft.com/fwlink/?linkid=2097913
await Task.Delay(5);
var context = new InjectServiceScope(_scopeFactory).Context();
context.Attach(updateStatusContent).State = EntityState.Modified;
await context.SaveChangesAsync();
context.Attach(updateStatusContent).State = EntityState.Detached;
await context.DisposeAsync();
}
try
{
await LocalRetrySaveChangesAsyncQuery();
}
catch (MySqlException mySqlException)
{
_logger?.LogError(mySqlException, "[RetrySaveChangesAsync] MySqlException catch-ed and retry again");
await LocalRetrySaveChangesAsyncQuery();
}
catch (DbUpdateConcurrencyException concurrencyException)
{
SolveConcurrency.SolveConcurrencyExceptionLoop(concurrencyException.Entries);
try
{
_logger?.LogInformation("[RetrySaveChangesAsync] SolveConcurrencyExceptionLoop disposed item");
var context = new InjectServiceScope(_scopeFactory).Context();
await context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException retry2Exception)
{
_logger?.LogInformation(retry2Exception,
"[RetrySaveChangesAsync] save failed after DbUpdateConcurrencyException");
}
}
}
/// <summary>
/// Get all objects inside a folder
/// </summary>
/// <param name="filePaths">parent paths</param>
/// <param name="fallbackDelay">delay when fallback</param>
/// <returns>list of all objects inside the folder</returns>
public async Task <List <FileIndexItem> > GetAllObjectsAsync(List <string> filePaths, int fallbackDelay = 5000)
{
if (!filePaths.Any())
{
return(new List <FileIndexItem>());
}
async Task <List <FileIndexItem> > LocalGetAllObjectsAsync()
{
var dbContext = new InjectServiceScope(_scopeFactory).Context();
var result =
FormatOk(await GetAllObjectsQuery(dbContext, filePaths)
.ToListAsync());
await dbContext.DisposeAsync();
return(result);
}
try
{
return(FormatOk(await GetAllObjectsQuery(_context, filePaths)
.ToListAsync()));
}
catch (ObjectDisposedException)
{
return(await LocalGetAllObjectsAsync());
}
catch (InvalidOperationException)
{
// System.InvalidOperationException: ExecuteReader can only be called when the connection is open.
return(await LocalGetAllObjectsAsync());
}
catch (MySqlConnector.MySqlException exception)
{
_logger.LogError(exception, $"catch-ed mysql error [next delay {fallbackDelay}]");
await Task.Delay(fallbackDelay);
return(await LocalGetAllObjectsAsync());
}
}
