private ExclusiveConnectionPool CreatePool(
IEventSubscriber eventCapturer = null,
TimeSpan?maintenanceInterval = null,
int minPoolSize = 0,
Action <Mock <IConnectionFactory> > connectionFactoryConfigurator = null)
{
var mockConnectionFactory = new Mock <IConnectionFactory>();
if (connectionFactoryConfigurator == null)
{
mockConnectionFactory
.Setup(f => f.CreateConnection(__serverId, __endPoint))
.Returns(() => new MockConnection(__serverId, new ConnectionSettings(), eventCapturer));
}
else
{
connectionFactoryConfigurator(mockConnectionFactory);
}
var exclusiveConnectionPool = new ExclusiveConnectionPool(
__serverId,
__endPoint,
new ConnectionPoolSettings(maintenanceInterval: maintenanceInterval.GetValueOrDefault(defaultValue: __dummyInterval), minConnections: minPoolSize),
mockConnectionFactory.Object,
eventCapturer ?? Mock.Of <IEventSubscriber>(),
Mock.Of <IConnectionExceptionHandler>());
exclusiveConnectionPool.Initialize();
exclusiveConnectionPool.SetReady(); // MaintenanceHelper is started
return(exclusiveConnectionPool);
}
private IConnectionPool SetupConnectionPoolMock(BsonDocument test, IEventSubscriber eventSubscriber)
{
var endPoint = new DnsEndPoint("localhost", 27017);
var serverId = new ServerId(new ClusterId(), endPoint);
ParseSettings(test, out var connectionPoolSettings, out var connectionSettings);
var connectionFactory = new Mock <IConnectionFactory>();
var exceptionHandler = new Mock <IConnectionExceptionHandler>();
connectionFactory
.Setup(c => c.CreateConnection(serverId, endPoint))
.Returns(() =>
{
var connection = new MockConnection(serverId, connectionSettings, eventSubscriber);
return(connection);
});
var connectionPool = new ExclusiveConnectionPool(
serverId,
endPoint,
connectionPoolSettings,
connectionFactory.Object,
eventSubscriber,
exceptionHandler.Object);
return(connectionPool);
}
public void GetChannel_should_update_topology_and_clear_connection_pool_on_network_error_or_timeout(
[Values("TimedOutSocketException", "NetworkUnreachableSocketException")] string errorType,
[Values(false, true)] bool async)
{
var serverId = new ServerId(_clusterId, _endPoint);
var connectionId = new ConnectionId(serverId);
var innerMostException = CoreExceptionHelper.CreateException(errorType);
var openConnectionException = new MongoConnectionException(connectionId, "Oops", new IOException("Cry", innerMostException));
var mockConnection = new Mock <IConnectionHandle>();
mockConnection.Setup(c => c.Open(It.IsAny <CancellationToken>())).Throws(openConnectionException);
mockConnection.Setup(c => c.OpenAsync(It.IsAny <CancellationToken>())).ThrowsAsync(openConnectionException);
var connectionFactory = new Mock <IConnectionFactory>();
connectionFactory.Setup(cf => cf.CreateConnection(serverId, _endPoint)).Returns(mockConnection.Object);
var mockExceptionHandler = new Mock <IConnectionExceptionHandler>();
var connectionPoolSettings = new ConnectionPoolSettings();
var connectionPool = new ExclusiveConnectionPool(serverId, _endPoint, connectionPoolSettings, connectionFactory.Object, new EventAggregator(), mockExceptionHandler.Object);
var mockConnectionPoolFactory = new Mock <IConnectionPoolFactory>();
mockConnectionPoolFactory
.Setup(f => f.CreateConnectionPool(It.IsAny <ServerId>(), _endPoint, It.IsAny <IConnectionExceptionHandler>()))
.Returns(connectionPool);
var mockMonitorServerDescription = new ServerDescription(serverId, _endPoint);
var mockServerMonitor = new Mock <IServerMonitor>();
mockServerMonitor.SetupGet(m => m.Description).Returns(mockMonitorServerDescription);
mockServerMonitor.SetupGet(m => m.Lock).Returns(new object());
var mockServerMonitorFactory = new Mock <IServerMonitorFactory>();
mockServerMonitorFactory.Setup(f => f.Create(It.IsAny <ServerId>(), _endPoint)).Returns(mockServerMonitor.Object);
var subject = new DefaultServer(_clusterId, _clusterClock, _clusterConnectionMode, _connectionModeSwitch, _directConnection, _settings, _endPoint, mockConnectionPoolFactory.Object, mockServerMonitorFactory.Object, _capturedEvents, _serverApi);
connectionPool._connectionExceptionHandler(subject);
subject.Initialize();
connectionPool.SetReady();
IChannelHandle channel = null;
Exception exception;
if (async)
{
exception = Record.Exception(() => channel = subject.GetChannelAsync(CancellationToken.None).GetAwaiter().GetResult());
}
else
{
exception = Record.Exception(() => channel = subject.GetChannel(CancellationToken.None));
}
channel.Should().BeNull();
exception.Should().Be(openConnectionException);
subject.Description.Type.Should().Be(ServerType.Unknown);
subject.Description.ReasonChanged.Should().Contain("ChannelException during handshake");
}
public void GetChannel_should_not_update_topology_and_clear_connection_pool_on_MongoConnectionException(
[Values("TimedOutSocketException", "NetworkUnreachableSocketException")] string errorType,
[Values(false, true)] bool async)
{
var serverId = new ServerId(_clusterId, _endPoint);
var connectionId = new ConnectionId(serverId);
var innerMostException = CoreExceptionHelper.CreateException(errorType);
var mockConnectionExceptionHandler = new Mock <IConnectionExceptionHandler>();
var openConnectionException = new MongoConnectionException(connectionId, "Oops", new IOException("Cry", innerMostException));
var mockConnection = new Mock <IConnectionHandle>();
mockConnection.Setup(c => c.Open(It.IsAny <CancellationToken>())).Throws(openConnectionException);
mockConnection.Setup(c => c.OpenAsync(It.IsAny <CancellationToken>())).ThrowsAsync(openConnectionException);
var connectionFactory = new Mock <IConnectionFactory>();
connectionFactory.Setup(cf => cf.CreateConnection(serverId, _endPoint)).Returns(mockConnection.Object);
var connectionPoolSettings = new ConnectionPoolSettings();
var connectionPool = new ExclusiveConnectionPool(serverId, _endPoint, connectionPoolSettings, connectionFactory.Object, new EventAggregator(), mockConnectionExceptionHandler.Object);
var mockConnectionPoolFactory = new Mock <IConnectionPoolFactory>();
mockConnectionPoolFactory
.Setup(f => f.CreateConnectionPool(It.IsAny <ServerId>(), _endPoint, It.IsAny <IConnectionExceptionHandler>()))
.Returns(connectionPool);
var subject = new LoadBalancedServer(_clusterId, _clusterClock, _settings, _endPoint, mockConnectionPoolFactory.Object, _capturedEvents, _serverApi);
subject.Initialize();
IChannelHandle channel = null;
Exception exception;
if (async)
{
exception = Record.Exception(() => channel = subject.GetChannelAsync(CancellationToken.None).GetAwaiter().GetResult());
}
else
{
exception = Record.Exception(() => channel = subject.GetChannel(CancellationToken.None));
}
channel.Should().BeNull();
exception.Should().Be(openConnectionException);
subject.Description.Type.Should().Be(ServerType.LoadBalanced);
subject.Description.ReasonChanged.Should().Be("Initialized");
subject.Description.State.Should().Be(ServerState.Connected);
_mockConnectionPool.Verify(c => c.Clear(It.IsAny <bool>()), Times.Never);
}
private (IConnectionPool, FailPoint, ICluster) SetupConnectionData(BsonDocument test, IEventSubscriber eventSubscriber, bool isUnit)
{
ParseSettings(test, out var connectionPoolSettings, out var connectionSettings);
IConnectionPool connectionPool;
ICluster cluster = null;
FailPoint failPoint = null;
if (isUnit)
{
var endPoint = new DnsEndPoint("localhost", 27017);
var serverId = new ServerId(new ClusterId(), endPoint);
var connectionFactory = new Mock <IConnectionFactory>();
connectionFactory
.Setup(c => c.CreateConnection(serverId, endPoint))
.Returns(() =>
{
var connection = new MockConnection(serverId, connectionSettings, eventSubscriber);
connection.Open(CancellationToken.None);
return(connection);
});
connectionPool = new ExclusiveConnectionPool(
serverId,
endPoint,
connectionPoolSettings,
connectionFactory.Object,
eventSubscriber);
connectionPool.Initialize();
}
else
{
failPoint = ConfigureFailPoint(test, CoreTestConfiguration.Cluster);
cluster = CoreTestConfiguration.CreateCluster(b =>
b.ConfigureConnectionPool(c => c.With(
maxConnections: connectionPoolSettings.MaxConnections,
minConnections: connectionPoolSettings.MinConnections,
waitQueueTimeout: connectionPoolSettings.WaitQueueTimeout))
.Subscribe(eventSubscriber));
var server = cluster.SelectServer(WritableServerSelector.Instance, CancellationToken.None);
connectionPool = server._connectionPool();
}
return(connectionPool, failPoint, cluster);
}
public static ServiceStates _serviceStates(this ExclusiveConnectionPool obj)
{
return((ServiceStates)Reflector.GetFieldValue(obj, nameof(_serviceStates)));
}
public static Task MaintainSizeAsync(this ExclusiveConnectionPool obj)
{
return((Task)Reflector.Invoke(obj, nameof(MaintainSizeAsync)));
}
public static CancellationTokenSource _maintenanceCancellationTokenSource(this ExclusiveConnectionPool obj)
{
return((CancellationTokenSource)Reflector.GetFieldValue(obj, nameof(_maintenanceCancellationTokenSource)));
}
private void IncrementGeneration(ExclusiveConnectionPool pool) => pool._generation(pool._generation() + 1);
// private methods
private MaintenanceHelper CreateSubject(ExclusiveConnectionPool pool)
{
return(new MaintenanceHelper(pool, __dummyInterval));
}
private (IConnectionPool, FailPoint, ICluster, Func <object, bool>) SetupConnectionData(BsonDocument test, EventCapturer eventCapturer, bool isUnit)
{
ParseSettings(test, out var connectionPoolSettings, out var connectionSettings);
IConnectionPool connectionPool;
ICluster cluster = null;
FailPoint failPoint = null;
Func <object, bool> eventsFilter = _ => true;
if (isUnit)
{
var endPoint = new DnsEndPoint("localhost", 27017);
var serverId = new ServerId(new ClusterId(), endPoint);
var connectionFactory = new Mock <IConnectionFactory>();
var connectionExceptionHandler = new Mock <IConnectionExceptionHandler>();
connectionFactory
.Setup(c => c.CreateConnection(serverId, endPoint))
.Returns(() =>
{
var connection = new MockConnection(serverId, connectionSettings, eventCapturer);
return(connection);
});
connectionPool = new ExclusiveConnectionPool(
serverId,
endPoint,
connectionPoolSettings,
connectionFactory.Object,
eventCapturer,
connectionExceptionHandler.Object);
connectionPool.Initialize();
}
else
{
var async = test.GetValue(Schema.async).ToBoolean();
cluster = CoreTestConfiguration.CreateCluster(b => b
.ConfigureServer(s => s.With(
heartbeatInterval: TimeSpan.FromMinutes(10)))
.ConfigureConnectionPool(c => c.With(
maxConnecting: connectionPoolSettings.MaxConnecting,
maxConnections: connectionPoolSettings.MaxConnections,
minConnections: connectionPoolSettings.MinConnections,
maintenanceInterval: connectionPoolSettings.MaintenanceInterval,
waitQueueTimeout: connectionPoolSettings.WaitQueueTimeout))
.ConfigureConnection(s => s.With(applicationName: $"{connectionSettings.ApplicationName}_async_{async}"))
.Subscribe(eventCapturer));
var server = cluster.SelectServer(WritableServerSelector.Instance, CancellationToken.None);
connectionPool = server._connectionPool();
if (test.TryGetValue(Schema.Intergration.failPoint, out var failPointDocument))
{
if (failPointDocument.AsBsonDocument.Contains("data"))
{
var data = failPointDocument["data"].AsBsonDocument;
if (data.TryGetValue("appName", out var appNameValue))
{
data["appName"] = $"{appNameValue}_async_{async}";
}
}
var resetPool = connectionPoolSettings.MinConnections > 0;
if (resetPool)
{
eventCapturer.WaitForOrThrowIfTimeout(events => events.Any(e => e is ConnectionCreatedEvent), TimeSpan.FromMilliseconds(500));
var connectionIdsToIgnore = new HashSet <int>(eventCapturer.Events
.OfType <ConnectionCreatedEvent>()
.Select(c => c.ConnectionId.LocalValue)
.ToList());
eventsFilter = o =>
{
if (o is ConnectionOpenedEvent
or ConnectionClosedEvent
or ConnectionCreatedEvent
or ConnectionFailedEvent)
{
var connectionId = o.ConnectionId();
return(!connectionIdsToIgnore.Contains(connectionId.LocalValue) &&
EndPointHelper.Equals(connectionId.ServerId.EndPoint, server.EndPoint));
}
if (o is ConnectionPoolReadyEvent
or ConnectionPoolClearedEvent)
{
var serverId = o.ServerId();
return(EndPointHelper.Equals(serverId.EndPoint, server.EndPoint));
}
return(true);
};
connectionPool.Clear(closeInUseConnections: false);
eventCapturer.WaitForOrThrowIfTimeout(events => events.Any(e => e is ConnectionPoolClearedEvent), TimeSpan.FromMilliseconds(500));
}
var failPointServer = CoreTestConfiguration.Cluster.SelectServer(new EndPointServerSelector(server.EndPoint), default);
failPoint = FailPoint.Configure(failPointServer, NoCoreSession.NewHandle(), failPointDocument.AsBsonDocument);
if (resetPool)
{
eventCapturer.Clear();
connectionPool.SetReady();
}
}
}
return(connectionPool, failPoint, cluster, eventsFilter);
}