public void Resolve_SecondResolveOtherHostname_NotUseCache()
{
var sut = new HostnameResolverWithCache(TimeSpan.FromMinutes(1), testDnsResolver);
sut.Resolve("hostname1");
sut.Resolve("hostname2");
Assert.That(testDnsResolver.CallCount, Is.EqualTo(2));
}
public void Resolve_SecondResolveSameHostname_SameResults()
{
var sut = new HostnameResolverWithCache(TimeSpan.FromMinutes(1), testDnsResolver);
var result1 = sut.Resolve("hostname");
var result2 = sut.Resolve("hostname");
Assert.AreEqual(result1, result2);
}
public void Resolve_SecondResolveWhenCacheDurationEnd_NotUseCache()
{
var sut = new HostnameResolverWithCache(TimeSpan.FromSeconds(1), testDnsResolver);
sut.Resolve("hostname");
sut.Resolve("hostname");
Thread.Sleep(TimeSpan.FromMilliseconds(1500));
sut.Resolve("hostname");
Assert.That(testDnsResolver.CallCount, Is.EqualTo(2));
}
public void Resolve_UseResolverOnlyHostnameNotEmpty(string hostname, int expectedCallCount)
{
var sut = new HostnameResolverWithCache(TimeSpan.FromMinutes(1), testDnsResolver);
sut.Resolve(hostname);
Assert.That(testDnsResolver.CallCount, Is.EqualTo(expectedCallCount));
}
public void Resolve_ReturnsNotNullOnlyOnSuccess(string hostname, bool shouldEmptyResult)
{
testDnsResolver = new TestDnsResolver("correct");
var sut = new HostnameResolverWithCache(TimeSpan.FromMinutes(1), testDnsResolver);
var ipAddress = sut.Resolve(hostname);
Assert.AreEqual(ipAddress == null, shouldEmptyResult);
}
private void InitializePool([NotNull] DnsEndPoint graphiteEndPoint, GraphiteProtocol graphiteProtocol, [CanBeNull] string globalPathPrefix)
{
hostnameResolver = new HostnameResolverWithCache(TimeSpan.FromHours(1), new SimpleDnsResolver());
switch (graphiteProtocol)
{
case GraphiteProtocol.Tcp:
tcpPool = new Pool <GraphiteTcpClient>(x => new GraphiteTcpClient(hostnameResolver.Resolve(graphiteEndPoint.Host), graphiteEndPoint.Port, globalPathPrefix));
break;
case GraphiteProtocol.Udp:
udpPool = new Pool <GraphiteUdpClient>(x => new GraphiteUdpClient(hostnameResolver.Resolve(graphiteEndPoint.Host), graphiteEndPoint.Port, globalPathPrefix));
break;
default:
throw new ArgumentException($"Unknown graphite protocol: {graphiteProtocol}");
}
}
public PooledStatsDClient([NotNull] IGraphiteClientSettings graphiteClientSettings)
{
pool = null;
innerClient = null;
prefixes = null;
if (graphiteClientSettings.Enabled && graphiteClientSettings.StatsDEndPoint != null)
{
var hostnameResolver = new HostnameResolverWithCache(TimeSpan.FromHours(1), new SimpleDnsResolver());
pool = new Pool <StatsDClient>(x => new StatsDClient(hostnameResolver.Resolve(graphiteClientSettings.StatsDEndPoint.Host), graphiteClientSettings.StatsDEndPoint.Port, graphiteClientSettings.GlobalPathPrefix));
}
}