public void TestAliveAfterAllReplicaDead()
{
using (var poolManager = new ReplicaSetPoolManager(2, new PoolSettings {
DeadHealth = 0.01, MaxCheckInterval = TimeSpan.FromSeconds(1), CheckIntervalIncreaseBasis = TimeSpan.FromMilliseconds(100)
}))
{
SimulateLoad(poolManager, threads: 10, operations: 1000);
poolManager.MakeDeadReplica(0);
poolManager.MakeDeadReplica(1);
poolManager.ResetCounters();
for (var i = 0; i < 1000; i++)
{
Assert.Throws <AllItemsIsDeadExceptions>(() => poolManager.Acquire());
}
poolManager.MakeLiveReplica(0);
poolManager.MakeLiveReplica(1);
poolManager.ResetCounters();
SimulateLoad(poolManager, threads: 10, operations: 1000);
Assert.That(poolManager.GetCreateCount(0), Is.InRange(7, 17));
Assert.That(poolManager.GetCreateCount(1), Is.InRange(7, 17));
Assert.That(poolManager.GetAcquiredCount(0), Is.InRange(1000 * 3, 1000 * 7));
Assert.That(poolManager.GetAcquiredCount(1), Is.InRange(1000 * 3, 1000 * 7));
}
}
private void SimulateLoad(ReplicaSetPoolManager poolManager, int threads, int operations, TimeSpan?interval = null)
{
var operationsInterval = interval == null ? (TimeSpan?)null : TimeSpan.FromTicks(interval.Value.Ticks / operations);
for (var i = 0; i < operations; i++)
{
var acquiredItems = Enumerable.Range(0, threads).Select(x => poolManager.Acquire()).ToArray();
if (operationsInterval != null)
{
Thread.Sleep(operationsInterval.Value);
}
foreach (var acquiredItem in acquiredItems)
{
poolManager.Good(acquiredItem);
poolManager.Release(acquiredItem);
}
}
}
public void TestAllReplicaDeadCauseSynchronousConnect()
{
using (var poolManager = new ReplicaSetPoolManager(2, new PoolSettings {
DeadHealth = 0.01, MaxCheckInterval = TimeSpan.FromSeconds(1), CheckIntervalIncreaseBasis = TimeSpan.FromMilliseconds(100)
}))
{
SimulateLoad(poolManager, threads: 10, operations: 1000);
poolManager.MakeDeadReplica(0);
poolManager.MakeDeadReplica(1);
poolManager.ResetCounters();
Assert.Throws <AllItemsIsDeadExceptions>(() => poolManager.Acquire());
Assert.Throws <AllItemsIsDeadExceptions>(() => poolManager.Acquire());
Assert.Throws <AllItemsIsDeadExceptions>(() => poolManager.Acquire());
Assert.Throws <AllItemsIsDeadExceptions>(() => poolManager.Acquire());
Assert.That(poolManager.GetCreateCount(0), Is.InRange(4, 4 * 2));
Assert.That(poolManager.GetCreateCount(1), Is.InRange(4, 4 * 2));
}
}
public void TestOneReplicaAliveAfterDead()
{
using (var poolManager = new ReplicaSetPoolManager(2, new PoolSettings {
DeadHealth = 0.01, MaxCheckInterval = TimeSpan.FromSeconds(1), CheckIntervalIncreaseBasis = TimeSpan.FromMilliseconds(100)
}))
{
SimulateLoad(poolManager, threads: 10, operations: 1000);
Assert.That(poolManager.GetCreateCount(0), Is.InRange(5, 10));
Assert.That(poolManager.GetCreateCount(1), Is.InRange(5, 10));
poolManager.MakeDeadReplica(0);
SimulateLoad(poolManager, threads: 10, operations: 1000, interval: TimeSpan.FromSeconds(10));
poolManager.MakeLiveReplica(0);
poolManager.ResetCounters();
SimulateLoad(poolManager, threads: 10, operations: 1000, interval: TimeSpan.FromSeconds(20));
Assert.That(poolManager.GetCreateCount(0), Is.InRange(7, 17));
Assert.That(poolManager.GetAcquiredCount(0), Is.InRange(1000 * 3, 1000 * 7));
Assert.That(poolManager.GetAcquiredCount(1), Is.InRange(1000 * 3, 1000 * 7));
}
}
public void TestOneDeadReplicaDoCreateConnectionsWhenAcquire()
{
using (var poolManager = new ReplicaSetPoolManager(2, new PoolSettings {
DeadHealth = 0.01, MaxCheckInterval = TimeSpan.FromSeconds(1), CheckIntervalIncreaseBasis = TimeSpan.FromMilliseconds(100)
}))
{
SimulateLoad(poolManager, threads: 10, operations: 1000);
Assert.That(poolManager.GetCreateCount(0), Is.InRange(5, 10));
Assert.That(poolManager.GetCreateCount(1), Is.InRange(5, 10));
poolManager.MakeDeadReplica(0);
SimulateLoad(poolManager, threads: 10, operations: 1000);
poolManager.ResetCounters();
SimulateLoad(poolManager, threads: 10, operations: 1000);
Assert.That(poolManager.GetCreateCount(0), Is.InRange(0, 1));
Assert.That(poolManager.GetCreateCount(1), Is.InRange(0, 10));
Assert.That(poolManager.GetAcquiredCount(0), Is.EqualTo(0));
Assert.That(poolManager.GetAcquiredCount(1), Is.EqualTo(1000 * 10));
}
}
