public void Should_Schedule_Reconnections_In_The_Background()
{
var lbp = new RoundRobinPolicy();
var config = new Configuration(
new Cassandra.Policies(lbp, new ConstantReconnectionPolicy(1000), FallthroughRetryPolicy.Instance),
new ProtocolOptions(),
null,
new SocketOptions(),
new ClientOptions(),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator());
var testCluster = TestClusterManager.GetNonShareableTestCluster(1, DefaultMaxClusterCreateRetries, true, false);
var metadata = new Metadata(config);
metadata.AddHost(new IPEndPoint(IPAddress.Parse(testCluster.InitialContactPoint), ProtocolOptions.DefaultPort));
var clusterMock = new Mock<ICluster>();
clusterMock.Setup(c => c.AllHosts()).Returns(() => metadata.Hosts.ToCollection());
lbp.Initialize(clusterMock.Object);
using (var cc = NewInstance(testCluster, config, metadata))
{
cc.Init();
var host = metadata.Hosts.First();
testCluster.Stop(1);
host.SetDown();
Thread.Sleep(2000);
Assert.False(host.IsUp);
testCluster.Start(1);
host.BringUpIfDown();
//Should reconnect using timer
Thread.Sleep(5000);
Assert.DoesNotThrow(() => cc.Query("SELECT key FROM system.local", false));
}
testCluster.ShutDown();
}
public void Should_GetAllSettingsFromBaseProfile_When_DerivedProfileHasNoSettings()
{
var go = new GraphOptions();
var lbp = new RoundRobinPolicy();
var sep = new ConstantSpeculativeExecutionPolicy(1000, 1);
var rp = new LoggingRetryPolicy(new DefaultRetryPolicy());
var baseProfileBuilder = new ExecutionProfileBuilder();
baseProfileBuilder
.WithLoadBalancingPolicy(lbp)
.WithSpeculativeExecutionPolicy(sep)
.WithSerialConsistencyLevel(ConsistencyLevel.LocalSerial)
.WithConsistencyLevel(ConsistencyLevel.Quorum)
.WithReadTimeoutMillis(3000)
.WithGraphOptions(go)
.WithRetryPolicy(rp);
var baseProfile = baseProfileBuilder.Build();
var profile = new ExecutionProfile(baseProfile, new ExecutionProfileBuilder().Build());
Assert.AreSame(lbp, profile.LoadBalancingPolicy);
Assert.AreSame(sep, profile.SpeculativeExecutionPolicy);
Assert.AreSame(rp, profile.RetryPolicy);
Assert.AreEqual(3000, profile.ReadTimeoutMillis);
Assert.AreEqual(ConsistencyLevel.LocalSerial, profile.SerialConsistencyLevel);
Assert.AreEqual(ConsistencyLevel.Quorum, profile.ConsistencyLevel);
Assert.AreEqual(go, profile.GraphOptions);
}
public void Should_MapOptionsToProfileWithAllSettingsFromCluster_When_NoProfileIsChangedOrAdded()
{
var lbp = new RoundRobinPolicy();
var sep = new ConstantSpeculativeExecutionPolicy(1000, 1);
var rp = new LoggingRetryPolicy(new DefaultRetryPolicy());
var tg = new AtomicMonotonicTimestampGenerator();
var cluster = Cluster
.Builder()
.AddContactPoint("127.0.0.1")
.WithQueryOptions(
new QueryOptions()
.SetConsistencyLevel(ConsistencyLevel.EachQuorum)
.SetSerialConsistencyLevel(ConsistencyLevel.LocalSerial)
.SetDefaultIdempotence(true)
.SetPageSize(5)
.SetPrepareOnAllHosts(false)
.SetReprepareOnUp(false))
.WithSocketOptions(new SocketOptions().SetReadTimeoutMillis(9999))
.WithLoadBalancingPolicy(lbp)
.WithSpeculativeExecutionPolicy(sep)
.WithRetryPolicy(rp)
.WithQueryTimeout(30)
.WithTimestampGenerator(tg)
.Build();
Assert.AreEqual(1, cluster.Configuration.RequestOptions.Count);
var profile = cluster.Configuration.ExecutionProfiles["default"];
Assert.AreEqual(ConsistencyLevel.EachQuorum, profile.ConsistencyLevel);
Assert.AreEqual(ConsistencyLevel.LocalSerial, profile.SerialConsistencyLevel);
Assert.AreEqual(9999, profile.ReadTimeoutMillis);
Assert.AreSame(lbp, profile.LoadBalancingPolicy);
Assert.AreSame(sep, profile.SpeculativeExecutionPolicy);
Assert.AreSame(rp, profile.RetryPolicy);
}
public void Should_MapOptionsToProfileCorrectly_When_AllSettingsAreProvided()
{
var lbp = new RoundRobinPolicy();
var sep = new ConstantSpeculativeExecutionPolicy(1000, 1);
var rp = new LoggingRetryPolicy(new DefaultRetryPolicy());
var cluster = Cluster.Builder().AddContactPoint("127.0.0.1").WithExecutionProfiles(opts =>
{
opts.WithProfile("test1", profile => profile
.WithConsistencyLevel(ConsistencyLevel.EachQuorum)
.WithSerialConsistencyLevel(ConsistencyLevel.LocalSerial)
.WithReadTimeoutMillis(9999)
.WithLoadBalancingPolicy(lbp)
.WithSpeculativeExecutionPolicy(sep)
.WithRetryPolicy(rp));
}).Build();
var execProfile = cluster.Configuration.ExecutionProfiles["test1"];
Assert.AreEqual(ConsistencyLevel.EachQuorum, execProfile.ConsistencyLevel);
Assert.AreEqual(ConsistencyLevel.LocalSerial, execProfile.SerialConsistencyLevel);
Assert.AreEqual(9999, execProfile.ReadTimeoutMillis);
Assert.AreSame(lbp, execProfile.LoadBalancingPolicy);
Assert.AreSame(sep, execProfile.SpeculativeExecutionPolicy);
Assert.AreSame(rp, execProfile.RetryPolicy);
}
public void Should_Reconnect_After_Several_Failed_Attempts()
{
var lbp = new RoundRobinPolicy();
var config = new Configuration(
new Cassandra.Policies(lbp, new ConstantReconnectionPolicy(1000), FallthroughRetryPolicy.Instance),
new ProtocolOptions(),
null,
new SocketOptions(),
new ClientOptions(),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator());
var testCluster = TestClusterManager.GetNonShareableTestCluster(1, DefaultMaxClusterCreateRetries, true, false);
var metadata = new Metadata(config);
metadata.AddHost(new IPEndPoint(IPAddress.Parse(testCluster.InitialContactPoint), ProtocolOptions.DefaultPort));
var clusterMock = new Mock <ICluster>();
clusterMock.Setup(c => c.AllHosts()).Returns(() => metadata.Hosts.ToCollection());
lbp.Initialize(clusterMock.Object);
using (var cc = NewInstance(testCluster, config))
{
cc.Init().Wait(InitTimeout);
testCluster.Stop(1);
Assert.Throws <NoHostAvailableException>(() => TaskHelper.WaitToComplete(cc.Reconnect()));
Assert.Throws <NoHostAvailableException>(() => TaskHelper.WaitToComplete(cc.Reconnect()));
Assert.Throws <NoHostAvailableException>(() => TaskHelper.WaitToComplete(cc.Reconnect()));
Assert.Throws <NoHostAvailableException>(() => TaskHelper.WaitToComplete(cc.Reconnect()));
testCluster.Start(1);
Assert.DoesNotThrow(() => TaskHelper.WaitToComplete(cc.Reconnect()));
}
testCluster.ShutDown();
}
public void Should_MapDefaultProfileToDefaultOptionsCorrectly_When_AllSettingsAreProvided()
{
var go = new GraphOptions();
var lbp = new RoundRobinPolicy();
var sep = new ConstantSpeculativeExecutionPolicy(1000, 1);
var rp = new LoggingRetryPolicy(new DefaultRetryPolicy());
var cluster =
Cluster
.Builder()
.AddContactPoint("127.0.0.1")
.WithSocketOptions(new SocketOptions().SetReadTimeoutMillis(3000))
.WithExecutionProfiles(opts =>
{
opts.WithProfile("default", profile => profile
.WithConsistencyLevel(ConsistencyLevel.EachQuorum)
.WithSerialConsistencyLevel(ConsistencyLevel.LocalSerial)
.WithReadTimeoutMillis(9999)
.WithLoadBalancingPolicy(lbp)
.WithSpeculativeExecutionPolicy(sep)
.WithRetryPolicy(rp)
.WithGraphOptions(go));
})
.Build();
Assert.AreEqual(1, cluster.Configuration.RequestOptions.Count);
var options = cluster.Configuration.RequestOptions["default"];
Assert.AreEqual(ConsistencyLevel.EachQuorum, options.ConsistencyLevel);
Assert.AreEqual(ConsistencyLevel.LocalSerial, options.SerialConsistencyLevel);
Assert.AreEqual(9999, options.ReadTimeoutMillis);
Assert.AreSame(lbp, options.LoadBalancingPolicy);
Assert.AreSame(sep, options.SpeculativeExecutionPolicy);
Assert.AreSame(rp, options.RetryPolicy);
Assert.AreSame(go, options.GraphOptions);
}
public void Should_MapProfileToOptionsWithSomeSettingsFromBaseProfile_When_ADerivedProfileIsProvided()
{
var lbp = new RoundRobinPolicy();
var sep = new ConstantSpeculativeExecutionPolicy(1000, 1);
var sepProfile = new ConstantSpeculativeExecutionPolicy(200, 50);
var rp = new LoggingRetryPolicy(new DefaultRetryPolicy());
var rpProfile = new LoggingRetryPolicy(new IdempotenceAwareRetryPolicy(new DefaultRetryPolicy()));
var tg = new AtomicMonotonicTimestampGenerator();
var cluster = Cluster
.Builder()
.AddContactPoint("127.0.0.1")
.WithQueryOptions(
new QueryOptions()
.SetConsistencyLevel(ConsistencyLevel.EachQuorum)
.SetSerialConsistencyLevel(ConsistencyLevel.Serial)
.SetDefaultIdempotence(true)
.SetPageSize(5)
.SetPrepareOnAllHosts(false)
.SetReprepareOnUp(false))
.WithSocketOptions(new SocketOptions().SetReadTimeoutMillis(300))
.WithLoadBalancingPolicy(lbp)
.WithSpeculativeExecutionPolicy(sep)
.WithRetryPolicy(rp)
.WithExecutionProfiles(opts => opts
.WithProfile("baseProfile", baseProfile => baseProfile
.WithConsistencyLevel(ConsistencyLevel.Quorum)
.WithSpeculativeExecutionPolicy(sepProfile)
.WithRetryPolicy(rpProfile))
.WithDerivedProfile("test1", "baseProfile", profileBuilder => profileBuilder
.WithConsistencyLevel(ConsistencyLevel.All)
.WithSerialConsistencyLevel(ConsistencyLevel.LocalSerial)))
.WithQueryTimeout(30)
.WithTimestampGenerator(tg)
.Build();
Assert.AreEqual(3, cluster.Configuration.RequestOptions.Count);
var options = cluster.Configuration.RequestOptions["test1"];
Assert.AreEqual(ConsistencyLevel.All, options.ConsistencyLevel);
Assert.AreEqual(ConsistencyLevel.LocalSerial, options.SerialConsistencyLevel);
Assert.AreEqual(300, options.ReadTimeoutMillis);
Assert.AreSame(lbp, options.LoadBalancingPolicy);
Assert.AreSame(sepProfile, options.SpeculativeExecutionPolicy);
Assert.AreSame(rpProfile, options.RetryPolicy);
Assert.AreEqual(true, options.DefaultIdempotence);
Assert.AreEqual(5, options.PageSize);
Assert.AreEqual(30, options.QueryAbortTimeout);
Assert.AreSame(tg, options.TimestampGenerator);
}
public async Task Should_Issue_Reconnect_Once()
{
var lbp = new RoundRobinPolicy();
var config = new Configuration(
new Cassandra.Policies(lbp, new ConstantReconnectionPolicy(1000), FallthroughRetryPolicy.Instance),
new ProtocolOptions(),
null,
new SocketOptions(),
new ClientOptions(),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator());
var testCluster = TestClusterManager.GetNonShareableTestCluster(1, DefaultMaxClusterCreateRetries, true, false);
var metadata = new Metadata(config);
metadata.AddHost(new IPEndPoint(IPAddress.Parse(testCluster.InitialContactPoint), ProtocolOptions.DefaultPort));
var clusterMock = new Mock <ICluster>();
clusterMock.Setup(c => c.AllHosts()).Returns(() => metadata.Hosts.ToCollection());
lbp.Initialize(clusterMock.Object);
using (var cc = NewInstance(testCluster, config))
{
await cc.Init();
testCluster.Stop(1);
const int lengthPerProcessor = 20;
var arr = new Task[Environment.ProcessorCount * lengthPerProcessor];
Parallel.For(0, Environment.ProcessorCount, j =>
{
for (var i = 0; i < lengthPerProcessor; i++)
{
arr[j * lengthPerProcessor + i] = cc.Reconnect();
}
});
// When any of the tasks completes, all the task should have completed
await Task.WhenAny(arr);
await Task.Delay(20);
var notFaultedTaskStatus = arr.Where(t => !t.IsFaulted)
.Select(t => (TaskStatus?)t.Status).FirstOrDefault();
Assert.Null(notFaultedTaskStatus, "Expected only faulted tasks");
var ex = Assert.Throws <NoHostAvailableException>(() => TaskHelper.WaitToComplete(arr[0]));
Assert.AreEqual(1, ex.Errors.Count);
Assert.IsInstanceOf <SocketException>(ex.Errors.Values.First());
}
testCluster.ShutDown();
}
public void RoundRobinIsCyclicTest()
{
byte hostLength = 4;
var hostList = GetHostList(hostLength);
var clusterMock = new Mock <ICluster>();
clusterMock
.Setup(c => c.AllHosts())
.Returns(hostList)
.Verifiable();
//Initialize the balancing policy
var policy = new RoundRobinPolicy();
policy.Initialize(clusterMock.Object);
var balancedHosts = policy.NewQueryPlan(null, new SimpleStatement());
//Take a list of hosts of 4, it should get 1 of every one in a cyclic order.
var firstRound = balancedHosts.ToList();
Assert.AreEqual(hostLength, firstRound.Count);
foreach (var host in hostList)
{
//Check that each host appears only once
Assert.AreEqual(1, firstRound.Where(h => h.Equals(host)).Count());
}
//test the same but in the following times
var followingRounds = new List <Host>();
for (var i = 0; i < 10; i++)
{
followingRounds.AddRange(policy.NewQueryPlan(null, new SimpleStatement()));
}
Assert.AreEqual(10 * hostLength, followingRounds.Count);
//Check that the cyclic order is correct
for (var i = 1; i < followingRounds.Count - 2; i++)
{
Assert.AreNotSame(followingRounds[i - 1], followingRounds[i]);
Assert.AreNotSame(followingRounds[i + 1], followingRounds[i]);
Assert.AreNotSame(followingRounds[i + 2], followingRounds[i]);
}
clusterMock.Verify();
}
public void Should_GetNoSettingFromBaseProfile_When_DerivedProfileHasAllSettings()
{
var go = new GraphOptions().SetName("ee");
var goProfile = new GraphOptions().SetName("tt");
var lbp = new RoundRobinPolicy();
var sep = new ConstantSpeculativeExecutionPolicy(1000, 1);
var rp = new LoggingRetryPolicy(new DefaultRetryPolicy());
var sepProfile = new ConstantSpeculativeExecutionPolicy(200, 50);
var lbpProfile = new TokenAwarePolicy(new DCAwareRoundRobinPolicy());
var rpProfile = new LoggingRetryPolicy(new IdempotenceAwareRetryPolicy(new DefaultRetryPolicy()));
var baseProfileBuilder = new ExecutionProfileBuilder();
baseProfileBuilder
.WithLoadBalancingPolicy(lbp)
.WithSpeculativeExecutionPolicy(sep)
.WithSerialConsistencyLevel(ConsistencyLevel.LocalSerial)
.WithConsistencyLevel(ConsistencyLevel.Quorum)
.WithReadTimeoutMillis(3000)
.WithGraphOptions(go)
.WithRetryPolicy(rp);
var baseProfile = baseProfileBuilder.Build();
var derivedProfileBuilder = new ExecutionProfileBuilder();
derivedProfileBuilder
.WithLoadBalancingPolicy(lbpProfile)
.WithSpeculativeExecutionPolicy(sepProfile)
.WithSerialConsistencyLevel(ConsistencyLevel.Serial)
.WithConsistencyLevel(ConsistencyLevel.LocalQuorum)
.WithReadTimeoutMillis(5000)
.WithGraphOptions(goProfile)
.WithRetryPolicy(rpProfile);
var derivedProfile = derivedProfileBuilder.Build();
var profile = new ExecutionProfile(baseProfile, derivedProfile);
Assert.AreSame(lbpProfile, profile.LoadBalancingPolicy);
Assert.AreSame(sepProfile, profile.SpeculativeExecutionPolicy);
Assert.AreSame(rpProfile, profile.RetryPolicy);
Assert.AreEqual(5000, profile.ReadTimeoutMillis);
Assert.AreEqual(ConsistencyLevel.Serial, profile.SerialConsistencyLevel);
Assert.AreEqual(ConsistencyLevel.LocalQuorum, profile.ConsistencyLevel);
Assert.AreSame(goProfile, profile.GraphOptions);
}
public void RoundRobinIsCyclicTestInParallel()
{
byte hostLength = 4;
var hostList = GetHostList(hostLength);
var clusterMock = new Mock <ICluster>();
clusterMock
.Setup(c => c.AllHosts())
.Returns(hostList)
.Verifiable();
//Initialize the balancing policy
var policy = new RoundRobinPolicy();
policy.Initialize(clusterMock.Object);
Action action = () =>
{
var resultingHosts = new List <Host>();
var hostEnumerator = policy.NewQueryPlan(null, new SimpleStatement());
foreach (var h in hostEnumerator)
{
//Slow down to try to execute it at the same time
Thread.Sleep(50);
resultingHosts.Add(h);
}
Assert.AreEqual(hostLength, resultingHosts.Count);
Assert.AreEqual(hostLength, resultingHosts.Distinct().Count());
};
var actions = new List <Action>();
for (var i = 0; i < 100; i++)
{
actions.Add(action);
}
var parallelOptions = new ParallelOptions();
parallelOptions.TaskScheduler = new ThreadPerTaskScheduler();
parallelOptions.MaxDegreeOfParallelism = 1000;
Parallel.Invoke(parallelOptions, actions.ToArray());
clusterMock.Verify();
}
public void Should_MapDefaultProfileToOptionsWithAllSettingsFromCluster_When_NoSettingIsProvided()
{
var go = new GraphOptions();
var lbp = new RoundRobinPolicy();
var sep = new ConstantSpeculativeExecutionPolicy(1000, 1);
var rp = new LoggingRetryPolicy(new DefaultRetryPolicy());
var tg = new AtomicMonotonicTimestampGenerator();
var cluster = Cluster
.Builder()
.AddContactPoint("127.0.0.1")
.WithQueryOptions(
new QueryOptions()
.SetConsistencyLevel(ConsistencyLevel.EachQuorum)
.SetSerialConsistencyLevel(ConsistencyLevel.LocalSerial)
.SetDefaultIdempotence(true)
.SetPageSize(5)
.SetPrepareOnAllHosts(false)
.SetReprepareOnUp(false))
.WithSocketOptions(new SocketOptions().SetReadTimeoutMillis(9999))
.WithLoadBalancingPolicy(lbp)
.WithSpeculativeExecutionPolicy(sep)
.WithRetryPolicy(rp)
.WithExecutionProfiles(opts => { opts.WithProfile("default", profile => { }); })
.WithQueryTimeout(30)
.WithTimestampGenerator(tg)
.WithGraphOptions(go)
.Build();
Assert.AreEqual(1, cluster.Configuration.RequestOptions.Count);
var options = cluster.Configuration.RequestOptions["default"];
Assert.AreEqual(ConsistencyLevel.EachQuorum, options.ConsistencyLevel);
Assert.AreEqual(ConsistencyLevel.LocalSerial, options.SerialConsistencyLevel);
Assert.AreEqual(9999, options.ReadTimeoutMillis);
Assert.AreSame(lbp, options.LoadBalancingPolicy);
Assert.AreSame(sep, options.SpeculativeExecutionPolicy);
Assert.AreSame(rp, options.RetryPolicy);
Assert.AreEqual(true, options.DefaultIdempotence);
Assert.AreEqual(5, options.PageSize);
Assert.AreEqual(30, options.QueryAbortTimeout);
Assert.AreSame(tg, options.TimestampGenerator);
Assert.AreSame(go, options.GraphOptions);
}
public void RoundRobinIsCyclicTest()
{
byte hostLength = 4;
var hostList = GetHostList(hostLength);
var clusterMock = new Mock<ICluster>();
clusterMock
.Setup(c => c.AllHosts())
.Returns(hostList)
.Verifiable();
//Initialize the balancing policy
var policy = new RoundRobinPolicy();
policy.Initialize(clusterMock.Object);
var balancedHosts = policy.NewQueryPlan(null, new SimpleStatement());
//Take a list of hosts of 4, it should get 1 of every one in a cyclic order.
var firstRound = balancedHosts.ToList();
Assert.AreEqual(hostLength, firstRound.Count);
foreach (var host in hostList)
{
//Check that each host appears only once
Assert.AreEqual(1, firstRound.Where(h => h.Equals(host)).Count());
}
//test the same but in the following times
var followingRounds = new List<Host>();
for (var i = 0; i < 10; i++)
{
followingRounds.AddRange(policy.NewQueryPlan(null, new SimpleStatement()));
}
Assert.AreEqual(10 * hostLength, followingRounds.Count);
//Check that the cyclic order is correct
for (var i = 1; i < followingRounds.Count - 2; i++)
{
Assert.AreNotSame(followingRounds[i - 1], followingRounds[i]);
Assert.AreNotSame(followingRounds[i + 1], followingRounds[i]);
Assert.AreNotSame(followingRounds[i + 2], followingRounds[i]);
}
clusterMock.Verify();
}
public void Should_Reconnect_Once_If_Called_Serially()
{
var lbp = new RoundRobinPolicy();
var config = new Configuration(
new Cassandra.Policies(lbp, new ConstantReconnectionPolicy(1000), FallthroughRetryPolicy.Instance),
new ProtocolOptions(),
null,
new SocketOptions(),
new ClientOptions(),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator());
config.BufferPool = new Microsoft.IO.RecyclableMemoryStreamManager();
var testCluster = TestClusterManager.GetNonShareableTestCluster(1, DefaultMaxClusterCreateRetries, true, false);
var metadata = new Metadata(config);
metadata.AddHost(new IPEndPoint(IPAddress.Parse(testCluster.InitialContactPoint), ProtocolOptions.DefaultPort));
var clusterMock = new Mock <ICluster>();
clusterMock.Setup(c => c.AllHosts()).Returns(() => metadata.Hosts.ToCollection());
lbp.Initialize(clusterMock.Object);
using (var cc = NewInstance(testCluster, config))
{
cc.Init();
testCluster.Stop(1);
var t1 = cc.Reconnect();
var t2 = cc.Reconnect();
var t3 = cc.Reconnect();
var t4 = cc.Reconnect();
Assert.AreEqual(t1, t2);
Assert.AreEqual(t1, t3);
Assert.AreEqual(t1, t4);
var ex = Assert.Throws <NoHostAvailableException>(() => TaskHelper.WaitToComplete(t1));
Assert.AreEqual(1, ex.Errors.Count);
Assert.IsInstanceOf <SocketException>(ex.Errors.Values.First());
}
testCluster.ShutDown();
}
public void Should_Schedule_Reconnections_In_The_Background()
{
var lbp = new RoundRobinPolicy();
var config = new Configuration(
new Cassandra.Policies(lbp, new ConstantReconnectionPolicy(1000), FallthroughRetryPolicy.Instance),
new ProtocolOptions(),
null,
new SocketOptions(),
new ClientOptions(),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator());
config.BufferPool = new Microsoft.IO.RecyclableMemoryStreamManager();
var testCluster = TestClusterManager.GetNonShareableTestCluster(1, DefaultMaxClusterCreateRetries, true, false);
var metadata = new Metadata(config);
metadata.AddHost(new IPEndPoint(IPAddress.Parse(testCluster.InitialContactPoint), ProtocolOptions.DefaultPort));
var clusterMock = new Mock <ICluster>();
clusterMock.Setup(c => c.AllHosts()).Returns(() => metadata.Hosts.ToCollection());
lbp.Initialize(clusterMock.Object);
using (var cc = NewInstance(testCluster, config, metadata))
{
cc.Init();
var host = metadata.Hosts.First();
testCluster.Stop(1);
host.SetDown();
Thread.Sleep(2000);
Assert.False(host.IsUp);
testCluster.Start(1);
host.BringUpIfDown();
//Should reconnect using timer
Thread.Sleep(5000);
Assert.DoesNotThrow(() => cc.Query("SELECT key FROM system.local", false));
}
testCluster.ShutDown();
}
public void Should_SetLegacyProperties_When_PoliciesAreProvidedByDefaultProfile()
{
var lbp1 = new RoundRobinPolicy();
var sep1 = new ConstantSpeculativeExecutionPolicy(1000, 1);
var lbp2 = new RoundRobinPolicy();
var sep2 = new ConstantSpeculativeExecutionPolicy(1000, 1);
var retryPolicy = new DefaultRetryPolicy();
var retryPolicy2 = new DefaultRetryPolicy();
var cluster =
Cluster.Builder()
.AddContactPoint("127.0.0.1")
.WithLoadBalancingPolicy(lbp1)
.WithSpeculativeExecutionPolicy(sep1)
.WithRetryPolicy(retryPolicy)
.WithSocketOptions(new SocketOptions().SetReadTimeoutMillis(123))
.WithQueryOptions(
new QueryOptions()
.SetConsistencyLevel(ConsistencyLevel.All)
.SetSerialConsistencyLevel(ConsistencyLevel.LocalSerial))
.WithExecutionProfiles(opt => opt
.WithProfile("default", profile =>
profile
.WithLoadBalancingPolicy(lbp2)
.WithSpeculativeExecutionPolicy(sep2)
.WithRetryPolicy(retryPolicy2)
.WithConsistencyLevel(ConsistencyLevel.Quorum)
.WithSerialConsistencyLevel(ConsistencyLevel.Serial)
.WithReadTimeoutMillis(4412)))
.Build();
Assert.AreSame(retryPolicy2, cluster.Configuration.Policies.ExtendedRetryPolicy);
Assert.AreSame(retryPolicy2, cluster.Configuration.Policies.RetryPolicy);
Assert.AreSame(sep2, cluster.Configuration.Policies.SpeculativeExecutionPolicy);
Assert.AreSame(lbp2, cluster.Configuration.Policies.LoadBalancingPolicy);
Assert.AreEqual(4412, cluster.Configuration.SocketOptions.ReadTimeoutMillis);
Assert.AreEqual(ConsistencyLevel.Quorum, cluster.Configuration.QueryOptions.GetConsistencyLevel());
Assert.AreEqual(ConsistencyLevel.Serial, cluster.Configuration.QueryOptions.GetSerialConsistencyLevel());
}
public void Should_Reconnect_Once_If_Called_Serially()
{
var lbp = new RoundRobinPolicy();
var config = new Configuration(
new Cassandra.Policies(lbp, new ConstantReconnectionPolicy(1000), FallthroughRetryPolicy.Instance),
new ProtocolOptions(),
null,
new SocketOptions(),
new ClientOptions(),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator());
config.BufferPool = new Microsoft.IO.RecyclableMemoryStreamManager();
var testCluster = TestClusterManager.GetNonShareableTestCluster(1, DefaultMaxClusterCreateRetries, true, false);
var metadata = new Metadata(config);
metadata.AddHost(new IPEndPoint(IPAddress.Parse(testCluster.InitialContactPoint), ProtocolOptions.DefaultPort));
var clusterMock = new Mock<ICluster>();
clusterMock.Setup(c => c.AllHosts()).Returns(() => metadata.Hosts.ToCollection());
lbp.Initialize(clusterMock.Object);
using (var cc = NewInstance(testCluster, config))
{
cc.Init();
testCluster.Stop(1);
var t1 = cc.Reconnect();
var t2 = cc.Reconnect();
var t3 = cc.Reconnect();
var t4 = cc.Reconnect();
Assert.AreEqual(t1, t2);
Assert.AreEqual(t1, t3);
Assert.AreEqual(t1, t4);
var ex = Assert.Throws<NoHostAvailableException>(() => TaskHelper.WaitToComplete(t1));
Assert.AreEqual(1, ex.Errors.Count);
Assert.IsInstanceOf<SocketException>(ex.Errors.Values.First());
}
testCluster.ShutDown();
}
public DistanceChangingLbp()
{
_childPolicy = new RoundRobinPolicy();
}
public void TestInitialize()
{
contract = new XmlQualifiedName("Service", "urn:org:services");
roundRobin = new RoundRobinPolicy(target => target.ContractTypeNames.Contains(contract));
}
public void RoundRobinIsCyclicTestInParallel()
{
byte hostLength = 4;
var hostList = GetHostList(hostLength);
var clusterMock = new Mock<ICluster>();
clusterMock
.Setup(c => c.AllHosts())
.Returns(hostList)
.Verifiable();
//Initialize the balancing policy
var policy = new RoundRobinPolicy();
policy.Initialize(clusterMock.Object);
Action action = () =>
{
var resultingHosts = new List<Host>();
var hostEnumerator = policy.NewQueryPlan(null, new SimpleStatement());
foreach (var h in hostEnumerator)
{
//Slow down to try to execute it at the same time
Thread.Sleep(50);
resultingHosts.Add(h);
}
Assert.AreEqual(hostLength, resultingHosts.Count);
Assert.AreEqual(hostLength, resultingHosts.Distinct().Count());
};
var actions = new List<Action>();
for (var i = 0; i < 100; i++)
{
actions.Add(action);
}
var parallelOptions = new ParallelOptions();
parallelOptions.TaskScheduler = new ThreadPerTaskScheduler();
parallelOptions.MaxDegreeOfParallelism = 1000;
Parallel.Invoke(parallelOptions, actions.ToArray());
clusterMock.Verify();
}
public void TestInitialize()
{
contract = new XmlQualifiedName("Service", "urn:org:services");
roundRobin = new RoundRobinPolicy(target => target.ContractTypeNames.Contains(contract));
}
public void Should_Reconnect_After_Several_Failed_Attempts()
{
var lbp = new RoundRobinPolicy();
var config = new Configuration(
new Cassandra.Policies(lbp, new ConstantReconnectionPolicy(1000), FallthroughRetryPolicy.Instance),
new ProtocolOptions(),
null,
new SocketOptions(),
new ClientOptions(),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator());
var testCluster = TestClusterManager.GetNonShareableTestCluster(1, DefaultMaxClusterCreateRetries, true, false);
var metadata = new Metadata(config);
metadata.AddHost(new IPEndPoint(IPAddress.Parse(testCluster.InitialContactPoint), ProtocolOptions.DefaultPort));
var clusterMock = new Mock<ICluster>();
clusterMock.Setup(c => c.AllHosts()).Returns(() => metadata.Hosts.ToCollection());
lbp.Initialize(clusterMock.Object);
using (var cc = NewInstance(testCluster, config))
{
cc.Init();
testCluster.Stop(1);
Assert.Throws<NoHostAvailableException>(() => TaskHelper.WaitToComplete(cc.Reconnect()));
Assert.Throws<NoHostAvailableException>(() => TaskHelper.WaitToComplete(cc.Reconnect()));
Assert.Throws<NoHostAvailableException>(() => TaskHelper.WaitToComplete(cc.Reconnect()));
Assert.Throws<NoHostAvailableException>(() => TaskHelper.WaitToComplete(cc.Reconnect()));
testCluster.Start(1);
Assert.DoesNotThrow(() => TaskHelper.WaitToComplete(cc.Reconnect()));
}
testCluster.ShutDown();
}
