// private methods
private FailPoint ConfigureFailPoint(string failpointCommand)
{
var cluster = DriverTestConfiguration.Client.Cluster;
var session = NoCoreSession.NewHandle();
return(FailPoint.Configure(cluster, session, BsonDocument.Parse(failpointCommand)));
}
// private methods
private FailPoint ConfigureFailPoint(IMongoClient client, int errorCode)
{
var session = NoCoreSession.NewHandle();
var args = BsonDocument.Parse($"{{ mode : {{ times : 1 }}, data : {{ failCommands : [\"insert\"], errorCode : {errorCode} }} }}");
return(FailPoint.Configure(client.Cluster, session, "failCommand", args));
}
public void SelectServer_loadbalancing_prose_test([Values(false, true)] bool async)
{
RequireServer.Check()
.Supports(Feature.ShardedTransactions, Feature.FailPointsBlockConnection)
.ClusterType(ClusterType.Sharded);
RequireMultipleShardRouters();
// temporary disable the test on Win Auth topologies, due to operations timings irregularities
if (CoreTestConfiguration.ConnectionString.Tls == true &&
RequirePlatform.GetCurrentOperatingSystem() == SupportedOperatingSystem.Windows)
{
throw new SkipException("Win Auth topologies temporary not supported due to timings irregularities.");
}
const string applicationName = "loadBalancingTest";
const int threadsCount = 10;
const int commandsPerThreadCount = 10;
const double maxCommandsOnSlowServerRatio = 0.3; // temporary set slow server load to 30% from 25% until find timings are investigated
const double operationsCountTolerance = 0.10;
var failCommand = BsonDocument.Parse($"{{ configureFailPoint: 'failCommand', mode : {{ times : 10000 }}, data : {{ failCommands : [\"find\"], blockConnection: true, blockTimeMS: 500, appName: '{applicationName}' }} }}");
DropCollection();
var eventCapturer = CreateEventCapturer();
using (var client = CreateDisposableClient(eventCapturer, applicationName))
{
var slowServer = client.Cluster.SelectServer(WritableServerSelector.Instance, default);
var fastServer = client.Cluster.SelectServer(new DelegateServerSelector((_, servers) => servers.Where(s => s.ServerId != slowServer.ServerId)), default);
using var failPoint = FailPoint.Configure(slowServer, NoCoreSession.NewHandle(), failCommand);
var database = client.GetDatabase(_databaseName);
CreateCollection();
var collection = database.GetCollection <BsonDocument>(_collectionName);
// warm up connections
var channels = new ConcurrentBag <IChannelHandle>();
ThreadingUtilities.ExecuteOnNewThreads(threadsCount, i =>
{
channels.Add(slowServer.GetChannel(default));
channels.Add(fastServer.GetChannel(default));