static async Task Run(string server, string apiKey, string query, string from, string to)
{
var connection = new SeqConnection(server, apiKey);
var now = DateTime.UtcNow;
var rangeStartUtc = from != null ? DateTime.Parse(from) : now - TimeSpan.FromDays(1);
DateTime? rangeEndUtc = to != null ? DateTime.Parse(to) : now;
var result = await connection.Data.QueryCsvAsync(query, rangeStartUtc, rangeEndUtc);
Console.WriteLine(result);
}
static async Task Run(string server, string apiKey, string filter, int window, CancellationToken cancel)
{
var startedAt = DateTime.UtcNow;
var connection = new SeqConnection(server, apiKey);
string strict = null;
if (filter != null)
{
var converted = await connection.Expressions.ToStrictAsync(filter);
strict = converted.StrictExpression;
}
var result = await connection.Events.ListAsync(count: window, render: true, fromDateUtc: startedAt, filter: strict);
// Since results may come late, we request an overlapping window and exclude
// events that have already been printed. If the last seen ID wasn't returned
// we assume the count was too small to cover the window.
var lastPrintedBatch = new HashSet<string>();
string lastReturnedId = null;
while (!cancel.IsCancellationRequested)
{
if (result.Count == 0)
{
await Task.Delay(TimeSpan.FromSeconds(1));
}
else
{
var noOverlap = result.All(e => e.Id != lastReturnedId);
if (noOverlap && lastReturnedId != null)
Console.WriteLine("<window exceeded>");
foreach (var eventEntity in ((IEnumerable<EventEntity>)result).Reverse())
{
if (lastPrintedBatch.Contains(eventEntity.Id))
{
continue;
}
lastReturnedId = eventEntity.Id;
var exception = "";
if (eventEntity.Exception != null)
exception = Environment.NewLine + eventEntity.Exception;
var ts = DateTimeOffset.Parse(eventEntity.Timestamp).ToLocalTime();
var color = ConsoleColor.White;
switch (eventEntity.Level)
{
case "Verbose":
case "Debug":
color = ConsoleColor.Gray;
break;
case "Warning":
color = ConsoleColor.Yellow;
break;
case "Error":
case "Fatal":
color = ConsoleColor.Red;
break;
}
Console.ForegroundColor = color;
Console.WriteLine("{0:G} [{1}] {2}{3}", ts, eventEntity.Level, eventEntity.RenderedMessage, exception);
Console.ResetColor();
}
lastPrintedBatch = new HashSet<string>(result.Select(e => e.Id));
}
var fromDateUtc = lastReturnedId == null ? startedAt : DateTime.UtcNow.AddMinutes(-3);
result = await connection.Events.ListAsync(count: window, render: true, fromDateUtc: fromDateUtc, filter: strict);
}
}