/// <summary>
/// Initializes a <see cref="MetricSource"/>.
/// </summary>
/// <param name="options">
/// <see cref="MetricSourceOptions" /> representing the options to use when creating metrics in this source.
/// </param>
public MetricSource(MetricSourceOptions options)
{
Options = options ?? throw new ArgumentNullException(nameof(options));
}
/// <summary>
/// Dumps the state of a <see cref="MetricsCollector" />.
/// </summary>
public async static Task DumpAsync(this MetricsCollector collector, TextWriter textWriter, MetricSourceOptions options)
{
await textWriter.WriteLineAsync("DefaultTags:");
var defaultTags = options.DefaultTags;
if (defaultTags.Count > 0)
{
foreach (var t in defaultTags)
{
await textWriter.WriteAsync(" ");
await textWriter.WriteAsync(t.Key);
await textWriter.WriteAsync(" = ");
await textWriter.WriteAsync(t.Value);
await textWriter.WriteLineAsync(string.Empty);
}
}
await textWriter.WriteLineAsync("----");
await textWriter.WriteLineAsync("Endpoints:");
var endpoints = collector.Endpoints;
foreach (var endpoint in endpoints)
{
await textWriter.WriteAsync(" ");
await textWriter.WriteAsync(endpoint.Name);
await textWriter.WriteAsync(": ");
switch (endpoint.Handler)
{
case BosunMetricHandler bosunHandler:
await textWriter.WriteLineAsync(bosunHandler.BaseUri?.AbsoluteUri ?? "null");
break;
case SignalFxMetricHandler signalFxHandler:
await textWriter.WriteLineAsync(signalFxHandler.BaseUri?.AbsoluteUri ?? "null");
break;
case LocalMetricHandler h:
await textWriter.WriteLineAsync("Local");
break;
default:
await textWriter.WriteLineAsync("Unknown");
break;
}
}
await textWriter.WriteLineAsync("----");
await textWriter.WriteLineAsync("Counters:");
var count = 0;
var localHandler = endpoints.Select(x => x.Handler).OfType <LocalMetricHandler>().FirstOrDefault();
if (localHandler != null)
{
foreach (var reading in localHandler.GetReadings(reset: false).OrderBy(r => r.Name))
{
await textWriter.WriteAsync("Name = ");
await textWriter.WriteAsync(reading.Name);
await textWriter.WriteAsync(", Value = ");
await textWriter.WriteAsync(reading.Value.ToString());
await textWriter.WriteAsync(", Type = ");
await textWriter.WriteAsync(reading.Type.ToString());
await textWriter.WriteAsync(", Tags = [");
var i = 0;
foreach (var tag in reading.Tags)
{
// Skip default tags
if (defaultTags.ContainsKey(tag.Key))
{
i++;
continue;
}
await textWriter.WriteAsync(tag.Key);
await textWriter.WriteAsync(" = ");
await textWriter.WriteAsync(tag.Value);
if (i++ < reading.Tags.Count - 1)
{
await textWriter.WriteAsync(", ");
}
}
await textWriter.WriteLineAsync("]");
count++;
}
}
if (count == 0)
{
await textWriter.WriteLineAsync("No readings found yet - this is normal immediately after startup, GIVE IT A MINUTE.");
}
}
