private static async Task GenerateUsers(IHDictionary <string, User> users)
{
await users.GetOrAddAsync("Rod", new User("Rod", 19, true));
await users.GetOrAddAsync("Jane", new User("Jane", 20, true));
await users.GetOrAddAsync("Freddy", new User("Freddy", 23, true));
}
private async Task SetTask(IHDictionary <string, string> dictionary, SemaphoreSlim started, int id)
{
var i = 0;
while (!_stop)
{
i++;
// put new value and update last state
// note: the value in the map/Near Cache is *always* larger or equal to valuePut
// assertion: valueMap >= valuePut
await dictionary.SetAsync(Key, i.ToString()).CAF();
_valuePut = i;
// ensure we have a value
if (i == 1)
{
started.Release();
}
// check if we see our last update
var valueStr = await dictionary.GetAsync(Key).CAF();
if (valueStr == null)
{
continue; // ignore nulls (?)
}
var valueInt = int.Parse(valueStr);
if (valueInt == i)
{
continue; // match = ok
}
_assertionViolationCount++;
Logger.LogWarning($"Err: set {i} but got {valueInt}.");
// maybe it needs a bit of time?
await Task.Delay(200).CAF();
// test again and stop if really lost
valueStr = await dictionary.GetAsync(Key).CAF();
valueInt = int.Parse(valueStr);
if (valueInt == i)
{
continue; // fixed
}
Logger.LogWarning($"Err: still getting {valueInt} instead of {i}.");
// maybe it needs a lot of time?
// in non-strict, we'll give it plenty
// abort all
_stop = true;
}
Logger.LogInformation($"AddOrUpdate task {id} performed {i} operations.");
}
public async Task TearDown()
{
if (_dictionary != null)
{
await _dictionary.DestroyAsync();
}
_dictionary = null;
if (_client != null)
{
await _client.DisposeAsync();
}
_client = null;
}
public async Task Init()
{
_client = await CreateAndStartClientAsync();
var client = _client as HazelcastClient;
Assert.That(client, Is.Not.Null);
SerializationService = client.SerializationService;
_dictionary = await _client.GetDictionaryAsync <object, object>("nc-" + TestUtils.RandomString());
var nearCache = GetNearCache(_dictionary);
Assert.That(nearCache, Is.InstanceOf <NearCaching.NearCache>());
}
private async Task RunTestInternal(IHDictionary <string, string> dictionary)
{
var tasks = new List <Task>();
const int readerTaskCount = 4;
// start 1 writer thread
using var started = new SemaphoreSlim(0);
tasks.Add(Task.Run(() => SetTask(dictionary, started, 0)));
// wait for writer thread to start before starting getter threads
var hasStarted = await started.WaitAsync(20_000);
if (!hasStarted)
{
Assert.Fail("Fail to start AddOrUpdate task.");
}
// start reader tasks
for (var i = 0; i < readerTaskCount; i++)
{
var id = i;
tasks.Add(Task.Run(() => GetTask(dictionary, id)));
}
// stop after maxRuntime seconds
var j = 0;
while (!_stop && j++ < MaxRuntime)
{
await Task.Delay(1000);
}
if (!_stop)
{
Logger.LogInformation("Good: problem did not occur within " + MaxRuntime + "s.");
}
_stop = true;
await Task.WhenAll(tasks);
}
private async Task GetTask(IHDictionary <string, string> dictionary, int id)
{
var n = 0;
while (!_stop)
{
n++;
// get the value
var valueStr = await dictionary.GetAsync(Key).CAF();
// that should never happen!
Assert.That(valueStr, Is.Not.Null);
// parse the value (to get some CPU load)
var valueInt = int.Parse(valueStr);
Assert.AreEqual(valueInt.ToString(), valueStr);
// slow down
await Task.Delay(100).CAF();
}
Logger.LogInformation($"Get task {id} performed {n} operations.");
}
public async Task Setup()
{
_dictionary = await Client.GetDictionaryAsync <object, object>(CreateUniqueName());
_ = await _dictionary.GetAsync(new object());
}
public async Task SetUp()
{
_dictionary = await Client.GetDictionaryAsync <string, HazelcastJsonValue>(CreateUniqueName());
}
internal NearCacheBase GetNearCache <TKey, TValue>(IHDictionary <TKey, TValue> dictionary)
{
return(dictionary is HDictionaryWithCache <TKey, TValue> cachedDictionary ? cachedDictionary.NearCache.InnerCache : null);
}