public void NoQuorumDoesNotObtainLock()
{
var l = Redlock.TryLock("r", "n", TimeSpan.FromSeconds(1), _noQuorum, _log);
Assert.Null(l);
Assert.NotEmpty(_log.Logs.Where(x => x.Exception != null && x.LogLevel == LogLevel.Error));
}
public void Sequential()
{
for (var i = 0; i < 10; i++)
{
var l = Redlock.TryLock("r", i.ToString(), TimeSpan.FromSeconds(10), _5Inst, _log);
Assert.NotNull(l);
l !.Value.Dispose();
}
}
public void TestWhenLockedAnotherLockRequestIsRejected()
{
var dlm = new Redlock(ConnectionMultiplexer.Connect("127.0.0.1:6379"));
Lock lockObject;
Lock newLockObject;
var locked = dlm.Lock(ResourceName, new TimeSpan(0, 0, 10), out lockObject);
Assert.IsTrue(locked, "Unable to get lock");
locked = dlm.Lock(ResourceName, new TimeSpan(0, 0, 10), out newLockObject);
Assert.IsFalse(locked, "lock taken, it shouldn't be possible");
dlm.Unlock(lockObject);
}
public void TestThatSequenceLockedUnlockedAndLockedAgainIsSuccessfull()
{
var dlm = new Redlock(ConnectionMultiplexer.Connect("127.0.0.1:6379"));
Lock lockObject;
Lock newLockObject;
var locked = dlm.Lock(ResourceName, new TimeSpan(0, 0, 10), out lockObject);
Assert.IsTrue(locked, "Unable to get lock");
dlm.Unlock(lockObject);
locked = dlm.Lock(ResourceName, new TimeSpan(0, 0, 10), out newLockObject);
Assert.IsTrue(locked, "Unable to get lock");
dlm.Unlock(newLockObject);
}
public void TestWhenLockedAnotherLockRequestIsRejected()
{
var dlm = new Redlock(ConnectionMultiplexer.Connect("127.0.0.1:6379"));
Lock lockObject;
Lock newLockObject;
var locked = dlm.Lock(resourceName, new TimeSpan(0, 0, 10), out lockObject);
Assert.IsTrue(locked, "Unable to get lock");
locked = dlm.Lock(resourceName, new TimeSpan(0, 0, 10), out newLockObject);
Assert.IsFalse(locked, "lock taken, it shouldn't be possible");
dlm.Unlock(lockObject);
}
public void TestThatSequenceLockedUnlockedAndLockedAgainIsSuccessfull()
{
var dlm = new Redlock(ConnectionMultiplexer.Connect("127.0.0.1:6379"));
Lock lockObject;
Lock newLockObject;
var locked = dlm.Lock(resourceName, new TimeSpan(0, 0, 10), out lockObject);
Assert.IsTrue(locked, "Unable to get lock");
dlm.Unlock(lockObject);
locked = dlm.Lock(resourceName, new TimeSpan(0, 0, 10), out newLockObject);
Assert.IsTrue(locked, "Unable to get lock");
dlm.Unlock(newLockObject);
}
public void MultiThread_NoOverlaps()
{
const string resource = nameof(MultiThread_NoOverlaps);
var threads = new Thread[16];
var threadWaitMs = 100;
using var cts = new CancellationTokenSource(threads.Length * threadWaitMs + 75000);
var repeater = new CancellationRedlockRepeater(cts.Token);
var locksCount = 0;
var exceptions = new ConcurrentBag <Exception>();
for (var i = 0; i < threads.Length; i++)
{
var threadId = i;
threads[i] = new Thread(() =>
{
try
{
var nonce = threadId.ToString();
var ttl = TimeSpan.FromSeconds(10);
using var l = Redlock.Lock(resource, nonce, ttl, _5Inst, _log, repeater, 50);
Assert.Equal(0, locksCount);
Interlocked.Increment(ref locksCount);
Thread.Sleep(threadWaitMs);
Assert.Equal(1, locksCount);
Interlocked.Decrement(ref locksCount);
}
catch (Exception e)
{
exceptions.Add(e);
}
});
threads[i].Start();
}
foreach (var thread in threads)
{
thread.Join();
}
Assert.Empty(exceptions);
}
public void TestWhenLockedAnotherLockRequestIsRejected()
{
var configBuilder = new ConfigurationBuilder();
configBuilder
.AddJsonFile("app.json", true);
var configRoot = configBuilder.Build();
var dlm = new Redlock(ConnectionMultiplexer.Connect(configRoot[ServerA_Key]));
Lock lockObject;
Lock newLockObject;
var locked = dlm.Lock(resourceName, new TimeSpan(0, 0, 10), out lockObject);
Assert.IsTrue(locked, "Unable to get lock");
locked = dlm.Lock(resourceName, new TimeSpan(0, 0, 10), out newLockObject);
Assert.IsFalse(locked, "lock taken, it shouldn't be possible");
dlm.Unlock(lockObject);
}
public void TestThatSequenceLockedUnlockedAndLockedAgainIsSuccessfull()
{
var configBuilder = new ConfigurationBuilder();
configBuilder
.AddJsonFile("app.json", true);
var configRoot = configBuilder.Build();
var dlm = new Redlock(ConnectionMultiplexer.Connect(configRoot[ServerA_Key]));
Lock lockObject;
Lock newLockObject;
var locked = dlm.Lock(resourceName, new TimeSpan(0, 0, 10), out lockObject);
Assert.IsTrue(locked, "Unable to get lock");
dlm.Unlock(lockObject);
locked = dlm.Lock(resourceName, new TimeSpan(0, 0, 10), out newLockObject);
Assert.IsTrue(locked, "Unable to get lock");
dlm.Unlock(newLockObject);
}
private static void LockExec(Action work, Redlock redLock, Lock lockObject, bool locked)
{
try
{
if (locked)
{
work();
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (locked)
{
redLock.Unlock(lockObject);
}
}
}
public void IntegrationTest()
{
using var l = Redlock.Lock("r", "n", TimeSpan.FromSeconds(10), _5Inst, _log, NoopRedlockRepeater.Instance, 50);
}
public void TimeoutExpires_ThenNewLockCanBeObtained()
{
using var l1 = Redlock.Lock("r", "n1", TimeSpan.FromSeconds(0.5), _5Inst, _log, NoopRedlockRepeater.Instance, 50);
Thread.Sleep(800);
using var l2 = Redlock.Lock("r", "n2", TimeSpan.FromSeconds(1), _5Inst, _log, NoopRedlockRepeater.Instance, 50);
}
private readonly Redlock _redlock; //分布式锁
public ProcessMessageLockHandler(Redlock redlock)
{
_redlock = redlock;
}
private static void GetLockObjetc(string resource, TimeSpan expiryTime, TimeSpan waitTime, Redlock redLock, out Lock lockObject, out bool locked)
{
locked = redLock.Lock(resource, expiryTime, out lockObject);
if (waitTime.Seconds == 0)
{
return;
}
int waitSecond = waitTime.Seconds;
while (!locked && waitSecond > 1)
{
locked = redLock.Lock(resource, expiryTime, out lockObject);
if (locked)
{
break;
}
#region 超时
Thread.Sleep(1000);
waitSecond--;
#endregion
}
}
