public void FirstUsageCheckConcurrentThreads()
{
var response = new
{
cluster_name = "elasticsearch",
nodes = new
{
node1 = new
{
name = "Node Name 1",
transport_address = "127.0.0.1:9300",
host = "127.0.0.1",
ip = "127.0.01",
version = "5.0.0-alpha3",
build_hash = "e455fd0",
roles = new List <string>(),
http = new
{
bound_address = new[] { "127.0.0.1:9200" }
},
settings = new Dictionary <string, object>
{
{ "cluster.name", "elasticsearch" },
{ "node.name", "Node Name 1" }
}
}
}
};
var responseBody = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(response));
var inMemoryConnection = new WaitingInMemoryConnection(
TimeSpan.FromSeconds(1),
responseBody);
var sniffingPipeline = CreatePipeline(
uris => new SniffingConnectionPool(uris),
connection: inMemoryConnection,
settingsSelector: s => s.RequestTimeout(TimeSpan.FromSeconds(2)));
var semaphoreSlim = new SemaphoreSlim(1, 1);
/**
* start three tasks that will initiate a sniff on startup. The first task will successfully
* sniff on startup with the remaining two waiting tasks exiting without exception and releasing
* the `SemaphoreSlim`.
*/
var task1 = Task.Run(() => sniffingPipeline.FirstPoolUsage(semaphoreSlim));
var task2 = Task.Run(() => sniffingPipeline.FirstPoolUsage(semaphoreSlim));
var task3 = Task.Run(() => sniffingPipeline.FirstPoolUsage(semaphoreSlim));
var exception = Record.Exception(() => Task.WaitAll(task1, task2, task3));
exception.Should().BeNull();
}
public void FirstUsageCheckConcurrentThreads()
{
var response = new
{
cluster_name = "elasticsearch",
nodes = new
{
node1 = new
{
name = "Node Name 1",
transport_address = "127.0.0.1:9300",
host = "127.0.0.1",
ip = "127.0.01",
version = "5.0.0-alpha3",
build = "e455fd0",
http_address = "127.0.0.1:9200",
settings = new JObject
{
{ "client.type", "node" },
{ "cluster.name", "elasticsearch" },
{ "config.ignore_system_properties", "true" },
{ "name", "Node Name 1" },
{ "path.home", "c:\\elasticsearch\\elasticsearch" },
{ "path.logs", "c:/ elasticsearch/logs" }
}
}
}
};
var responseBody = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(response));
var inMemoryConnection = new WaitingInMemoryConnection(
TimeSpan.FromSeconds(1),
responseBody);
var sniffingPipeline = CreatePipeline(
uris => new SniffingConnectionPool(uris),
connection: inMemoryConnection,
settingsSelector: s => s.RequestTimeout(TimeSpan.FromSeconds(2)));
var semaphoreSlim = new SemaphoreSlim(1, 1);
/**
* start three tasks that will initiate a sniff on startup. The first task will successfully
* sniff on startup with the remaining two waiting tasks exiting without exception and releasing
* the `SemaphoreSlim`.
*/
var task1 = System.Threading.Tasks.Task.Run(() => sniffingPipeline.FirstPoolUsage(semaphoreSlim));
var task2 = System.Threading.Tasks.Task.Run(() => sniffingPipeline.FirstPoolUsage(semaphoreSlim));
var task3 = System.Threading.Tasks.Task.Run(() => sniffingPipeline.FirstPoolUsage(semaphoreSlim));
var exception = Record.Exception(() => System.Threading.Tasks.Task.WaitAll(task1, task2, task3));
exception.Should().BeNull();
}
public void FirstUsageCheckConcurrentThreads()
{
//hide
var response = new
{
cluster_name = "elasticsearch",
nodes = new
{
node1 = new
{
name = "Node Name 1",
transport_address = "127.0.0.1:9300",
host = "127.0.0.1",
ip = "127.0.01",
version = "5.0.0-alpha3",
build_hash = "e455fd0",
roles = new List <string>(),
http = new
{
bound_address = new[] { "127.0.0.1:9200" }
},
settings = new Dictionary <string, object>
{
{ "cluster.name", "elasticsearch" },
{ "node.name", "Node Name 1" }
}
}
}
};
//hide
var responseBody = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(response));
/** We can demonstrate this with the following example. First, let's configure
* a custom `IConnection` implementation that's simply going to return a known
* 200 response after one second
*/
var inMemoryConnection = new WaitingInMemoryConnection(
TimeSpan.FromSeconds(1),
responseBody);
/**
* Next, we create a <<sniffing-connection-pool, Sniffing connection pool>> using our
* custom connection and a timeout for how long a request can take before the client
* times out
*/
var sniffingPipeline = CreatePipeline(
uris => new SniffingConnectionPool(uris),
connection: inMemoryConnection,
settingsSelector: s => s.RequestTimeout(TimeSpan.FromSeconds(2)));
/**Now, with a `SemaphoreSlim` in place that allows only one thread to enter at a time,
* start three tasks that will initiate a sniff on startup.
*
* The first task will successfully sniff on startup with the remaining two waiting
* tasks exiting without exception. The `SemaphoreSlim` is also released, ready for
* when sniffing needs to take place again
*/
var semaphoreSlim = new SemaphoreSlim(1, 1);
var task1 = Task.Run(() => sniffingPipeline.FirstPoolUsage(semaphoreSlim));
var task2 = Task.Run(() => sniffingPipeline.FirstPoolUsage(semaphoreSlim));
var task3 = Task.Run(() => sniffingPipeline.FirstPoolUsage(semaphoreSlim));
var exception = Record.Exception(() => Task.WaitAll(task1, task2, task3));
exception.Should().BeNull();
semaphoreSlim.CurrentCount.Should().Be(1);
}
