public PagedResult <LogMessage> GetLogs(string orderDirection = "Descending", int pageNumber = 1, string filterExpression = null, [FromUri] string[] logLevels = null)
{
//We will need to stop the request if trying to do this on a 1GB file
if (CanViewLogs() == false)
{
throw new HttpResponseException(Request.CreateNotificationValidationErrorResponse("Unable to view logs, due to size"));
}
var direction = orderDirection == "Descending" ? Direction.Descending : Direction.Ascending;
return(_logViewer.GetLogs(startDate: DateTime.Now.AddDays(-1), endDate: DateTime.Now, filterExpression: filterExpression, pageNumber: pageNumber, orderDirection: direction, logLevels: logLevels));
}
public ActionResult <PagedResult <LogMessage> > GetLogs(string orderDirection = "Descending", int pageNumber = 1, string filterExpression = null, [FromQuery(Name = "logLevels[]")] string[] logLevels = null, [FromQuery] DateTime?startDate = null, [FromQuery] DateTime?endDate = null)
{
var logTimePeriod = GetTimePeriod(startDate, endDate);
//We will need to stop the request if trying to do this on a 1GB file
if (CanViewLogs(logTimePeriod) == false)
{
return(ValidationProblem("Unable to view logs, due to size"));
}
var direction = orderDirection == "Descending" ? Direction.Descending : Direction.Ascending;
return(_logViewer.GetLogs(logTimePeriod, filterExpression: filterExpression, pageNumber: pageNumber, orderDirection: direction, logLevels: logLevels));
}
public void Logs_Can_Be_Queried()
{
var sw = new Stopwatch();
sw.Start();
// Should get me the most 100 recent log entries & using default overloads for remaining params
PagedResult <LogMessage> allLogs = _logViewer.GetLogs(_logTimePeriod, pageNumber: 1);
sw.Stop();
// Check we get 100 results back for a page & total items all good :)
Assert.AreEqual(100, allLogs.Items.Count());
Assert.AreEqual(102, allLogs.TotalItems);
Assert.AreEqual(2, allLogs.TotalPages);
// Check collection all contain same object type
CollectionAssert.AllItemsAreInstancesOfType(allLogs.Items, typeof(LogMessage));
// Check first item is newest
LogMessage newestItem = allLogs.Items.First();
DateTimeOffset.TryParse("2018-11-12T08:39:18.1971147Z", out DateTimeOffset newDate);
Assert.AreEqual(newDate, newestItem.Timestamp);
// Check we call method again with a smaller set of results & in ascending
PagedResult <LogMessage> smallQuery = _logViewer.GetLogs(_logTimePeriod, pageNumber: 1, pageSize: 10, orderDirection: Direction.Ascending);
Assert.AreEqual(10, smallQuery.Items.Count());
Assert.AreEqual(11, smallQuery.TotalPages);
// Check first item is oldest
LogMessage oldestItem = smallQuery.Items.First();
DateTimeOffset.TryParse("2018-11-12T08:34:45.8371142Z", out DateTimeOffset oldDate);
Assert.AreEqual(oldDate, oldestItem.Timestamp);
// Check invalid log levels
// Rather than expect 0 items - get all items back & ignore the invalid levels
string[] invalidLogLevels = { "Invalid", "NotALevel" };
PagedResult <LogMessage> queryWithInvalidLevels = _logViewer.GetLogs(_logTimePeriod, pageNumber: 1, logLevels: invalidLogLevels);
Assert.AreEqual(102, queryWithInvalidLevels.TotalItems);
// Check we can call method with an array of logLevel (error & warning)
string[] logLevels = { "Warning", "Error" };
PagedResult <LogMessage> queryWithLevels = _logViewer.GetLogs(_logTimePeriod, pageNumber: 1, logLevels: logLevels);
Assert.AreEqual(7, queryWithLevels.TotalItems);
// Query @Level='Warning' BUT we pass in array of LogLevels for Debug & Info (Expect to get 0 results)
string[] logLevelMismatch = { "Debug", "Information" };
PagedResult <LogMessage> filterLevelQuery = _logViewer.GetLogs(_logTimePeriod, pageNumber: 1, filterExpression: "@Level='Warning'", logLevels: logLevelMismatch);
Assert.AreEqual(0, filterLevelQuery.TotalItems);
}
public HttpResponseMessage Export(string orderDirection = "Descending", string filterExpression = null, [FromUri] string[] logLevels = null, [FromUri] DateTime?startDate = null, [FromUri] DateTime?endDate = null)
{
var sleeps = new[] { 1000, 2000, 3000, 4000, 5000, 6000 };
var rand = new Random();
//System.Threading.Thread.Sleep(sleeps[rand.Next(sleeps.Length)]);
try
{
var logTimePeriod = GetTimePeriod(startDate, endDate);
if (CanViewLogs(logTimePeriod) == false)
{
throw new HttpResponseException(Request.CreateNotificationValidationErrorResponse("Unable to export logs, due to size"));
}
var direction = orderDirection == "Descending" ? Direction.Descending : Direction.Ascending;
var items = new List <LogMessage>();
var pageNumber = 1;
const int pageSize = 2000;
var results = _logViewer.GetLogs(logTimePeriod, pageNumber, pageSize, direction, filterExpression, logLevels);
items.AddRange(results.Items);
while (pageNumber < results.TotalPages)
{
pageNumber++;
results = _logViewer.GetLogs(logTimePeriod, pageNumber, pageSize, direction, filterExpression, logLevels);
items.AddRange(results.Items);
}
if (!items.Any())
{
throw new HttpResponseException(Request.CreateNotificationValidationErrorResponse("Unable to export logs, no messages were found"));
}
var stream = new MemoryStream();
var filename = $@"log-export-{DateTime.Now:yyyyMMddHHmmss}.xlsx";
_logExportBuilder.ProcessData(stream, logTimePeriod, items);
stream.Position = 0;
var result = new HttpResponseMessage(HttpStatusCode.OK)
{
Content = new StreamContent(stream)
};
result.Content.Headers.Add("Access-Control-Expose-Headers", "Content-Disposition");
result.Content.Headers.ContentType = new MediaTypeHeaderValue("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
result.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
{
FileName = filename
};
return(result);
}
catch (Exception ex)
{
_logger.Error <LogExporterController>("Failed to export", ex);
throw new HttpResponseException(Request.CreateNotificationValidationErrorResponse("Unable to export logs, internal server error"));
}
}