/// <summary>
/// Repeatedly make list log entries request till it gets desired number of logs or it reaches end.
/// _nextPageToken is used to control if it is getting first page or continuous page.
///
/// On complex filters, scanning through logs take time. The server returns empty results
/// with a next page token. Continue to send request till some logs are found.
/// </summary>
/// <param name="autoReload">Indicate if the request comes from autoReload event.</param>
private async Task LoadLogsAsync(bool autoReload = false)
{
var tokenSource = new CancellationTokenSource();
CancellationToken cancellationToken = tokenSource.Token;
CancellationTokenSource = tokenSource;
if (_logs.Count >= MaxLogEntriesCount)
{
UserPromptService.Default.ErrorPrompt(
message: Resources.LogViewerResultSetTooLargeMessage,
title: Resources.UiDefaultPromptTitle);
CancellationTokenSource?.Cancel();
return;
}
try
{
DateTime startTimestamp = DateTime.Now;
string order = DateTimePickerModel.IsDescendingOrder ? "timestamp desc" : "timestamp asc";
int count = 0;
do
{
// Here, it does not do pageSize: _defaultPageSize - count,
// Because this is requried to use same page size for getting next page.
LogEntryRequestResult results = await DataSource.ListLogEntriesAsync(
_filter, order,
pageSize : DefaultPageSize, nextPageToken : _nextPageToken, cancelToken : cancellationToken);
_nextPageToken = results.NextPageToken;
if (results.LogEntries != null)
{
count += results.LogEntries.Count;
AddLogs(results.LogEntries, autoReload);
}
if (string.IsNullOrWhiteSpace(_nextPageToken))
{
_nextPageToken = null;
}
} while (count < DefaultPageSize && !cancellationToken.IsCancellationRequested &&
_nextPageToken != null);
EventsReporterWrapper.ReportEvent(LogsViewerLogsLoadedEvent.Create(CommandStatus.Success, DateTime.Now - startTimestamp));
}
catch (Exception)
{
_nextPageToken = null;
EventsReporterWrapper.ReportEvent(LogsViewerLogsLoadedEvent.Create(CommandStatus.Failure));
throw;
}
}
/// <summary>
/// Repeatedly make list log entries request till it gets desired number of logs or it reaches end.
/// _nextPageToken is used to control if it is getting first page or continuous page.
///
/// On complex filters, scanning through logs take time. The server returns empty results
/// with a next page token. Continue to send request till some logs are found.
/// </summary>
/// <param name="cancellationToken">A cancellation token. The caller can monitor the cancellation event.</param>
/// <param name="autoReload">Indicate if the request comes from autoReload event.</param>
private async Task LoadLogsAsync(CancellationToken cancellationToken, bool autoReload = false)
{
if (_logs.Count >= MaxLogEntriesCount)
{
UserPromptUtils.ErrorPrompt(
message: Resources.LogViewerResultSetTooLargeMessage,
title: Resources.UiDefaultPromptTitle);
_cancellationTokenSource?.Cancel();
return;
}
try
{
var startTimestamp = DateTime.Now;
var order = DateTimePickerModel.IsDescendingOrder ? "timestamp desc" : "timestamp asc";
int count = 0;
while (count < DefaultPageSize && !cancellationToken.IsCancellationRequested)
{
Debug.WriteLine($"LoadLogs, count={count}, firstPage={_nextPageToken == null}");
// Here, it does not do pageSize: _defaultPageSize - count,
// Because this is requried to use same page size for getting next page.
var results = await _dataSource.Value.ListLogEntriesAsync(_filter, order,
pageSize : DefaultPageSize, nextPageToken : _nextPageToken, cancelToken : cancellationToken);
_nextPageToken = results.NextPageToken;
if (results?.LogEntries != null)
{
count += results.LogEntries.Count;
AddLogs(results.LogEntries, autoReload);
}
if (String.IsNullOrWhiteSpace(_nextPageToken))
{
_nextPageToken = null;
break;
}
}
EventsReporterWrapper.ReportEvent(LogsViewerLogsLoadedEvent.Create(CommandStatus.Success, DateTime.Now - startTimestamp));
}
catch (Exception ex) when(!ErrorHandlerUtils.IsCriticalException(ex))
{
EventsReporterWrapper.ReportEvent(LogsViewerLogsLoadedEvent.Create(CommandStatus.Failure));
throw;
}
}
