private IMeter GetMetric(string scope)
{
string key = scope;
if (string.IsNullOrWhiteSpace(scope) == true)
{
key = GlobalKey;
}
var settings = _configCache.GetExistingOrCreate(key, () => GetSettings(scope));
if (settings == null || settings.Count == 0)
{
return(NullMeter.Instance);
}
return(CreateMeter(scope, settings));
}
private IMeter CreateMeter(string scope, NameValueCollection settings)
{
int port = 0, mtu = 1432, batchingInterval = 1;
var applyPrefix = settings["applyPrefix"] ?? string.Empty;
var tenantPrefix = settings["prefix"] ?? string.Empty;
var @namespace = string.Empty;
// Should apply prefix if
var shouldApplyPrefix =
string.IsNullOrWhiteSpace(applyPrefix) == true ||
"|no|n|false|0|off|".IndexOf(applyPrefix, StringComparison.OrdinalIgnoreCase) == -1;
var isGlobal = string.IsNullOrWhiteSpace(scope);
if (isGlobal == false && shouldApplyPrefix == true)
{
if (string.IsNullOrWhiteSpace(tenantPrefix) == false)
{
@namespace = tenantPrefix + "." + _application;
}
else
{
@namespace = scope + "." + _application;
}
}
else
{
@namespace = _application;
}
var host = settings["host"];
if (string.IsNullOrWhiteSpace(host) == true)
{
return(NullMeter.Instance);
}
if (int.TryParse(settings["port"], out port) == false)
{
return(NullMeter.Instance);
}
EndPoint endpoint = null;
IPAddress ip;
if (IPAddress.TryParse(host, out ip) == true)
{
endpoint = new IPEndPoint(ip, port);
}
else
{
endpoint = new DnsEndPoint(host, port);
}
if (int.TryParse(settings["mtu"], out mtu) == false)
{
mtu = 1432;
}
if (int.TryParse(settings["batchingInterval"], out batchingInterval) == false)
{
batchingInterval = 1;
}
var key = $"{host}:{port}";
return(_meterCache.GetExistingOrCreate(key, () => new AsyncStatsDMeter(new StatsdMeter(endpoint, @namespace, mtu, batchingInterval))));
}
