private ISession GetSession(
ISpeculativeExecutionPolicy speculativeExecutionPolicy = null, bool warmup = true,
ILoadBalancingPolicy lbp = null, PoolingOptions pooling = null)
{
if (_testCluster == null)
{
throw new Exception("Test cluster not initialized");
}
var builder = Cluster.Builder()
.AddContactPoint(_testCluster.InitialContactPoint)
.WithSpeculativeExecutionPolicy(speculativeExecutionPolicy)
.WithLoadBalancingPolicy(lbp ?? Cassandra.Policies.DefaultLoadBalancingPolicy)
.WithRetryPolicy(DowngradingConsistencyRetryPolicy.Instance)
.WithSocketOptions(new SocketOptions().SetReadTimeoutMillis(0));
if (pooling != null)
{
builder.WithPoolingOptions(pooling);
}
var cluster = builder.Build();
_clusters.Add(cluster);
var session = cluster.Connect();
if (warmup)
{
TestHelper.ParallelInvoke(() => session.Execute(QueryLocal), 10);
}
_addressNode1 = IPAddress.Parse(_testCluster.ClusterIpPrefix + "1");
return session;
}
internal Configuration(Policies policies,
ProtocolOptions protocolOptions,
PoolingOptions poolingOptions,
SocketOptions socketOptions,
ClientOptions clientOptions,
IAuthInfoProvider authProvider)
{
this._policies = policies;
this._protocolOptions = protocolOptions;
this._poolingOptions = poolingOptions;
this._socketOptions = socketOptions;
this._clientOptions = clientOptions;
this._authProvider = authProvider;
}
public Configuration(Policies policies,
ProtocolOptions protocolOptions,
PoolingOptions poolingOptions,
SocketOptions socketOptions,
ClientOptions clientOptions,
IAuthInfoProvider authProvider,
bool metricsEnabled)
{
this._policies = policies;
this._protocolOptions = protocolOptions;
this._poolingOptions = poolingOptions;
this._socketOptions = socketOptions;
this._clientOptions = clientOptions;
this._authProvider = authProvider;
this._metricsEnabled = metricsEnabled;
}
private static Configuration GetConfig(int coreConnections = 3, int maxConnections = 8)
{
var pooling = new PoolingOptions()
.SetCoreConnectionsPerHost(HostDistance.Local, coreConnections)
.SetMaxConnectionsPerHost(HostDistance.Local, maxConnections);
var config = new Configuration(Policies.DefaultPolicies,
new ProtocolOptions(),
pooling,
new SocketOptions(),
new ClientOptions(),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator());
config.BufferPool = new Microsoft.IO.RecyclableMemoryStreamManager();
return config;
}
internal Configuration(Policies policies,
ProtocolOptions protocolOptions,
PoolingOptions poolingOptions,
SocketOptions socketOptions,
ClientOptions clientOptions,
IAuthProvider authProvider,
IAuthInfoProvider authInfoProvider,
QueryOptions queryOptions)
{
_policies = policies;
_protocolOptions = protocolOptions;
_poolingOptions = poolingOptions;
_socketOptions = socketOptions;
_clientOptions = clientOptions;
_authProvider = authProvider;
_authInfoProvider = authInfoProvider;
_queryOptions = queryOptions;
}
public void SpeculativeExecution_Pause_Using_All_Stream_Ids()
{
var maxProtocolVersion = Cluster.MaxProtocolVersion;
_testCluster = TestClusterManager.GetNonShareableTestCluster(2, 1, true, false);
Cluster.MaxProtocolVersion = 2;
try
{
var pooling = new PoolingOptions().SetCoreConnectionsPerHost(HostDistance.Local, 1);
var session = GetSession(new ConstantSpeculativeExecutionPolicy(50L, 1), true, null, pooling);
const int pauseThreshold = 140 * 2;
var tasks = new List<Task<IPAddress>>();
var semaphore = new SemaphoreSlim(150 * 2);
for (var i = 0; i < 512; i++)
{
//Pause after the stream ids are in use for the connections
if (i == pauseThreshold)
{
_testCluster.PauseNode(1);
}
semaphore.Wait();
tasks.Add(session
.ExecuteAsync(new SimpleStatement(QueryLocal).SetIdempotence(true))
.Continue(t =>
{
semaphore.Release();
return t.Result.Info.QueriedHost.Address;
}));
}
Task.WaitAll(tasks.Select(t => (Task)t).ToArray());
_testCluster.ResumeNode(1);
//There shouldn't be any query using node1 as coordinator passed the threshold.
Assert.AreEqual(0, tasks.Skip(pauseThreshold).Count(t => t.Result.Equals(_addressNode1)));
Thread.Sleep(1000);
}
finally
{
Cluster.MaxProtocolVersion = maxProtocolVersion;
}
}
private static Configuration GetConfig(QueryOptions queryOptions = null, Cassandra.Policies policies = null, PoolingOptions poolingOptions = null)
{
return(new TestConfigurationBuilder
{
Policies = policies ?? new Cassandra.Policies(),
PoolingOptions = poolingOptions,
QueryOptions = queryOptions ?? DefaultQueryOptions
}.Build());
}
/// <summary>
/// Gets the pooling options. If not specified, gets the default by protocol version
/// </summary>
internal PoolingOptions GetPoolingOptions(byte protocolVersion)
{
if (this._poolingOptions != null)
{
return this._poolingOptions;
}
this._poolingOptions = PoolingOptions.GetDefault(protocolVersion);
return this._poolingOptions;
}
public void GetRequest_Batch_With_Empty_Timestamp_Generator()
{
var batch = new BatchStatement();
batch.Add(new SimpleStatement("QUERY"));
var policies = new Cassandra.Policies(
Cassandra.Policies.DefaultLoadBalancingPolicy, Cassandra.Policies.DefaultReconnectionPolicy,
Cassandra.Policies.DefaultRetryPolicy, Cassandra.Policies.DefaultSpeculativeExecutionPolicy,
new NoTimestampGenerator());
var config = RequestHandlerTests.GetConfig(new QueryOptions(), policies, PoolingOptions.Create());
var request = RequestHandler.GetRequest(batch, Serializer, config.DefaultRequestOptions);
var bodyBuffer = GetBodyBuffer(request);
// The batch request is composed by:
// <type><n><query_1>...<query_n><consistency><flags>[<serial_consistency>][<timestamp>]
var offset = 1 + 2 + 1;
var queryLength = BeConverter.ToInt32(bodyBuffer, offset);
Assert.AreEqual(5, queryLength);
// skip query, n_params and consistency
offset += 4 + queryLength + 2 + 2;
var flags = GetQueryFlags(bodyBuffer, ref offset);
Assert.False(flags.HasFlag(QueryFlags.WithDefaultTimestamp));
// Only serial consistency left
Assert.AreEqual(bodyBuffer.Length, offset + 2);
}
public void GetRequest_Batch_With_Provided_Timestamp()
{
var batch = new BatchStatement();
batch.Add(new SimpleStatement("QUERY"));
var providedTimestamp = DateTimeOffset.Now;
// To microsecond precision
providedTimestamp = providedTimestamp.Subtract(TimeSpan.FromTicks(providedTimestamp.Ticks % 10));
batch.SetTimestamp(providedTimestamp);
var config = RequestHandlerTests.GetConfig(new QueryOptions(), Cassandra.Policies.DefaultPolicies, PoolingOptions.Create());
var request = RequestHandler.GetRequest(batch, Serializer, config.DefaultRequestOptions);
var bodyBuffer = GetBodyBuffer(request);
// The batch request is composed by:
// <type><n><query_1>...<query_n><consistency><flags>[<serial_consistency>][<timestamp>]
var offset = 1 + 2 + 1;
var queryLength = BeConverter.ToInt32(bodyBuffer, offset);
Assert.AreEqual(5, queryLength);
// skip query, n_params and consistency
offset += 4 + queryLength + 2 + 2;
var flags = GetQueryFlags(bodyBuffer, ref offset);
Assert.True(flags.HasFlag(QueryFlags.WithDefaultTimestamp));
// Skip serial consistency
offset += 2;
var timestamp = TypeSerializer.UnixStart.AddTicks(BeConverter.ToInt64(bodyBuffer, offset) * 10);
Assert.AreEqual(providedTimestamp, timestamp);
}
private Connection CreateConnection(ProtocolOptions protocolOptions = null, SocketOptions socketOptions = null, PoolingOptions poolingOptions = null)
{
if (socketOptions == null)
{
socketOptions = new SocketOptions();
}
if (protocolOptions == null)
{
protocolOptions = new ProtocolOptions();
}
var config = new Configuration(
new Cassandra.Policies(),
protocolOptions,
poolingOptions,
socketOptions,
new ClientOptions(false, 20000, null),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator(),
new StartupOptionsFactory(),
new SessionFactoryBuilder(),
new Dictionary <string, IExecutionProfile>(),
new RequestOptionsMapper(),
null);
return(CreateConnection(GetProtocolVersion(), config));
}
public void GetRequest_Batch_With_Timestamp_Generator()
{
var batch = new BatchStatement();
batch.Add(new SimpleStatement("QUERY"));
var startDate = DateTimeOffset.Now;
// To microsecond precision
startDate = startDate.Subtract(TimeSpan.FromTicks(startDate.Ticks % 10));
var config = RequestHandlerTests.GetConfig(new QueryOptions(), Cassandra.Policies.DefaultPolicies, PoolingOptions.Create());
var request = RequestHandler.GetRequest(batch, Serializer, config.DefaultRequestOptions);
var bodyBuffer = GetBodyBuffer(request);
// The batch request is composed by:
// <type><n><query_1>...<query_n><consistency><flags>[<serial_consistency>][<timestamp>]
var offset = 1;
// n = 1
Assert.AreEqual(1, BeConverter.ToInt16(bodyBuffer, offset));
// Query_1 <kind><string><n_params>
offset += 2;
// kind = 0, not prepared
Assert.AreEqual(0, bodyBuffer[offset++]);
var queryLength = BeConverter.ToInt32(bodyBuffer, offset);
Assert.AreEqual(5, queryLength);
// skip query, n_params and consistency
offset += 4 + queryLength + 2 + 2;
var flags = GetQueryFlags(bodyBuffer, ref offset);
Assert.True(flags.HasFlag(QueryFlags.WithDefaultTimestamp));
// Skip serial consistency
offset += 2;
var timestamp = TypeSerializer.UnixStart.AddTicks(BeConverter.ToInt64(bodyBuffer, offset) * 10);
Assert.GreaterOrEqual(timestamp, startDate);
Assert.LessOrEqual(timestamp, DateTimeOffset.Now.Add(TimeSpan.FromMilliseconds(100)));
}
internal FakeObjectPool(PoolManager poolManager, PoolingOptions <T> options)
: base(poolManager, new PoolingOptions <T>(options.Instantiator, 0, 0))
{
}
private Connection CreateConnection(ProtocolOptions protocolOptions = null, SocketOptions socketOptions = null, PoolingOptions poolingOptions = null)
{
if (socketOptions == null)
{
socketOptions = new SocketOptions();
}
if (protocolOptions == null)
{
protocolOptions = new ProtocolOptions();
}
var config = new Configuration(
new Dse.Policies(),
protocolOptions,
poolingOptions,
socketOptions,
new ClientOptions(false, 20000, null),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator());
return(CreateConnection(GetLatestProtocolVersion(), config));
}
internal FakeSimpleObjectPool(PoolManager poolManager, PoolingOptions <T> options)
: base(poolManager, 0, options.Instantiator)
{
}
private Connection CreateConnection(ProtocolOptions protocolOptions = null, SocketOptions socketOptions = null, PoolingOptions poolingOptions = null)
{
if (socketOptions == null)
{
socketOptions = new SocketOptions();
}
if (protocolOptions == null)
{
protocolOptions = new ProtocolOptions();
}
var config = new Configuration(
new Cassandra.Policies(),
protocolOptions,
poolingOptions,
socketOptions,
new ClientOptions(false, 20000, null),
NoneAuthProvider.Instance,
null,
new QueryOptions(),
new DefaultAddressTranslator());
config.BufferPool = new RecyclableMemoryStreamManager();
config.Timer = new HashedWheelTimer();
return(CreateConnection(GetLatestProtocolVersion(), config));
}
public async Task Should_Throw_NoHostAvailableException_When_All_Host_Are_Busy()
{
const int connectionLength = 2;
const int maxRequestsPerConnection = 50;
var lbp = new TestHelper.OrderedLoadBalancingPolicy().UseRoundRobin();
var builder = Cluster.Builder()
.WithPoolingOptions(
PoolingOptions.Create()
.SetCoreConnectionsPerHost(HostDistance.Local, connectionLength)
.SetMaxConnectionsPerHost(HostDistance.Local, connectionLength)
.SetHeartBeatInterval(0)
.SetMaxRequestsPerConnection(maxRequestsPerConnection))
.WithSocketOptions(new SocketOptions().SetReadTimeoutMillis(0))
.WithLoadBalancingPolicy(lbp);
using (var testCluster = SimulacronCluster.CreateNew(new SimulacronOptions {
Nodes = "3"
}))
using (var cluster = builder.AddContactPoint(testCluster.InitialContactPoint).Build())
{
const string query = "SELECT * FROM simulated_ks.table1";
testCluster.Prime(new
{
when = new { query },
then = new { result = "success", delay_in_ms = 3000 }
});
var session = await cluster.ConnectAsync().ConfigureAwait(false);
var hosts = cluster.AllHosts().ToArray();
await TestHelper.TimesLimit(() =>
session.ExecuteAsync(new SimpleStatement("SELECT key FROM system.local")), 100, 16).ConfigureAwait(false);
// Wait until all connections to all host are created
await TestHelper.WaitUntilAsync(() =>
{
var state = session.GetState();
return(state.GetConnectedHosts().All(h => state.GetInFlightQueries(h) == connectionLength));
}).ConfigureAwait(false);
lbp.UseFixedOrder();
const int busyExceptions = 10;
var length = maxRequestsPerConnection * connectionLength * hosts.Length + Environment.ProcessorCount +
busyExceptions;
var tasks = new List <Task <Exception> >(length);
for (var i = 0; i < length; i++)
{
tasks.Add(TestHelper.EatUpException(session.ExecuteAsync(new SimpleStatement(query))));
}
var results = await Task.WhenAll(tasks).ConfigureAwait(false);
// Only successful responses or NoHostAvailableException expected
Assert.Null(results.FirstOrDefault(e => e != null && !(e is NoHostAvailableException)));
// At least the first n (maxRequestsPerConnection * connectionLength * hosts.length) succeeded
Assert.That(results.Count(e => e == null),
Is.GreaterThanOrEqualTo(maxRequestsPerConnection * connectionLength * hosts.Length));
// At least the following m (busyExceptions) failed
var failed = results.Where(e => e is NoHostAvailableException).Cast <NoHostAvailableException>()
.ToArray();
Assert.That(failed, Has.Length.GreaterThanOrEqualTo(busyExceptions));
foreach (var ex in failed)
{
Assert.That(ex.Errors, Has.Count.EqualTo(hosts.Length));
foreach (var kv in ex.Errors)
{
Assert.IsInstanceOf <BusyPoolException>(kv.Value);
var busyException = (BusyPoolException)kv.Value;
Assert.AreEqual(kv.Key, busyException.Address);
Assert.That(busyException.ConnectionLength, Is.EqualTo(connectionLength));
Assert.That(busyException.MaxRequestsPerConnection, Is.EqualTo(maxRequestsPerConnection));
Assert.That(busyException.Message, Is.EqualTo(
$"All connections to host {busyException.Address} are busy, {maxRequestsPerConnection}" +
$" requests are in-flight on each {connectionLength} connection(s)"));
}
}
}
}
public void GetRequest_Batch_With_64K_Queries()
{
var batch = new BatchStatement();
for (var i = 0; i < ushort.MaxValue; i++)
{
batch.Add(new SimpleStatement("QUERY"));
}
var config = RequestHandlerTests.GetConfig(new QueryOptions(), Cassandra.Policies.DefaultPolicies, PoolingOptions.Create());
var request = RequestHandler.GetRequest(batch, Serializer, config.DefaultRequestOptions);
var bodyBuffer = GetBodyBuffer(request);
// The batch request is composed by:
// <type><n><query_1>...<query_n><consistency><flags>[<serial_consistency>][<timestamp>]
CollectionAssert.AreEqual(new byte[] { 0xff, 0xff }, bodyBuffer.Skip(1).Take(2));
}
private Connection CreateConnection(ProtocolOptions protocolOptions = null, SocketOptions socketOptions = null, PoolingOptions poolingOptions = null)
{
if (socketOptions == null)
{
socketOptions = new SocketOptions();
}
if (protocolOptions == null)
{
protocolOptions = new ProtocolOptions();
}
var config = new TestConfigurationBuilder
{
ProtocolOptions = protocolOptions,
PoolingOptions = poolingOptions,
SocketOptions = socketOptions,
ClientOptions = new ClientOptions(false, 20000, null)
}.Build();
return(CreateConnection(GetProtocolVersion(), config));
}