[U] public void ViewSeesResurrectedNodes()
{
var dateTimeProvider = new TestableDateTimeProvider();
var seeds = Enumerable.Range(9200, NumberOfNodes).Select(p => new Node(new Uri("http://localhost:" + p))).ToList();
seeds.First().MarkDead(dateTimeProvider.Now().AddDays(1));
var pool = new StaticConnectionPool(seeds, randomize: false, dateTimeProvider: dateTimeProvider);
for (var i = 0; i < 20; i++)
{
var node = pool.CreateView().First();
node.Uri.Port.Should().Be(9201);
node = pool.CreateView().First();
node.Uri.Port.Should().Be(9202);
}
/** If we roll the clock forward two days, the node that was marked dead until tomorrow (or yesterday!) should be resurrected */
dateTimeProvider.ChangeTime(d => d.AddDays(2));
var n = pool.CreateView().First();
n.Uri.Port.Should().Be(9201);
n = pool.CreateView().First();
n.Uri.Port.Should().Be(9202);
n = pool.CreateView().First();
n.Uri.Port.Should().Be(9200);
n.IsResurrected.Should().BeTrue();
}
public void IsTakingTooLong()
{
var dateTime = new TestableDateTimeProvider();
var singleNodePipeline = CreatePipeline(uris => new SingleNodeConnectionPool(uris.First(), dateTime), dateTimeProvider: dateTime);
var staticPipeline = CreatePipeline(uris => new StaticConnectionPool(uris, dateTimeProvider: dateTime), dateTimeProvider: dateTime);
var sniffingPipeline = CreatePipeline(uris => new SniffingConnectionPool(uris, dateTimeProvider: dateTime), dateTimeProvider: dateTime);
singleNodePipeline.IsTakingTooLong.Should().BeFalse();
staticPipeline.IsTakingTooLong.Should().BeFalse();
sniffingPipeline.IsTakingTooLong.Should().BeFalse();
/** go one hour into the future */
dateTime.ChangeTime(d => d.Add(TimeSpan.FromHours(2)));
/**connection pools that do not support reseeding never go stale */
singleNodePipeline.IsTakingTooLong.Should().BeTrue();
staticPipeline.IsTakingTooLong.Should().BeTrue();
/** the sniffing connection pool supports reseeding so the pipeline will signal the state is out of date */
sniffingPipeline.IsTakingTooLong.Should().BeTrue();
/** request pipeline exposes the DateTime it started, here we assert it started 2 hours in the past */
(dateTime.Now() - singleNodePipeline.StartedOn).Should().BePositive().And.BeCloseTo(TimeSpan.FromHours(2));
(dateTime.Now() - staticPipeline.StartedOn).Should().BePositive().And.BeCloseTo(TimeSpan.FromHours(2));
(dateTime.Now() - sniffingPipeline.StartedOn).Should().BePositive().And.BeCloseTo(TimeSpan.FromHours(2));
}