GetOrCreateConnection() public méthode

Gets or creates connection to the cluster.
public GetOrCreateConnection ( ConnectionScope scope, PartitionKey partitionKey ) : Connection
scope ConnectionScope
partitionKey PartitionKey
Résultat Connection
BalancedConnectionStrategy Class Documentation
Exemple #1
0
        public async Task BalancedStrategyLowTreshold()
        {
            using(ShimsContext.Create())
            {
                //create cluster
                var config = new CqlConnectionStringBuilder {NewConnectionTreshold = 5};

                var cluster = new Cluster(config);

                //create nodes
                var n = new Node(IPAddress.Parse("127.0.0.1"), cluster);
                var n2 = new Node(IPAddress.Parse("127.0.0.2"), cluster);
                var n3 = new Node(IPAddress.Parse("127.0.0.3"), cluster);
                var n4 = new Node(IPAddress.Parse("127.0.0.4"), cluster);
                var nodes = new Ring();
                nodes.Update(new List<Node> {n, n2, n3, n4}, "RandomPartitioner",
                             new Logger(new NullLogger(), LogLevel.None));

                ShimAllConnections();

                var logger = cluster.LoggerManager.GetLogger("BalancedStrategyLowTresholdTest");

                IConnectionStrategy strategy = new BalancedConnectionStrategy(nodes, config);

                const int nr = 8;

                for(int i = 0; i < nr; i++)
                {
                    Connection connection;

                    using(logger.ThreadBinding())
                    {
                        connection = strategy.GetOrCreateConnection(ConnectionScope.Command, PartitionKey.None);
                    }

                    await
                        connection.SendRequestAsync(new QueryFrame("", CqlConsistency.Any, null), logger, 10,
                                                    CancellationToken.None);
                }

                Assert.AreEqual(nodes.Sum(nd => nd.ConnectionCount), nr);
                Assert.IsTrue(nodes.All(nd => nd.ConnectionCount == nr/4));
            }
        }
Exemple #2
0
        public async Task BalancedStrategyManyRequestLowMaxConnections()
        {
            using (ShimsContext.Create())
            {
                //create cluster
                var config = new ClusterConfig { NewConnectionTreshold = 5, MaxConnections = 6 };

                var cluster = new Cluster(config);

                //create nodes
                var n1 = new Node(IPAddress.Parse("127.0.0.1"), cluster);
                var n2 = new Node(IPAddress.Parse("127.0.0.2"), cluster);
                var n3 = new Node(IPAddress.Parse("127.0.0.3"), cluster);
                var n4 = new Node(IPAddress.Parse("127.0.0.4"), cluster);
                var nodes = new Ring(new List<Node> { n1, n2, n3, n4 }, "RandomPartitioner");

                ShimAllConnections();

                var logger = cluster.LoggerManager.GetLogger("BalancedStrategyManyRequestLowMaxConnectionsTest");

                IConnectionStrategy strategy = new BalancedConnectionStrategy(nodes, config);

                const int nr = 80;

                for (int i = 0; i < nr; i++)
                {
                    Connection connection;

                    using (logger.ThreadBinding())
                        connection = strategy.GetOrCreateConnection(PartitionKey.None);

                    await connection.SendRequestAsync(new QueryFrame("", CqlConsistency.Any), logger, 10);
                }

                Assert.AreEqual(6, nodes.Sum(nd => nd.ConnectionCount));
                Assert.IsTrue(nodes.All(n => n.Load == 80 * 10 / 4));
            }
        }