public void Can_create_distributed_lock()
{
var key = "lockkey";
int lockTimeout = 2;
var distributedLock = new DistributedLock();
long lockExpire;
Assert.AreEqual(distributedLock.Lock(key, lockTimeout, lockTimeout, out lockExpire, Redis), DistributedLock.LOCK_ACQUIRED);
//can't re-lock
distributedLock = new DistributedLock();
Assert.AreEqual(distributedLock.Lock(key, lockTimeout, lockTimeout, out lockExpire, Redis), DistributedLock.LOCK_NOT_ACQUIRED);
// re-acquire lock after timeout
Thread.Sleep(lockTimeout * 1000 + 1000);
distributedLock = new DistributedLock();
Assert.AreEqual(distributedLock.Lock(key, lockTimeout, lockTimeout, out lockExpire, Redis), DistributedLock.LOCK_RECOVERED);
Assert.IsTrue(distributedLock.Unlock(key, lockExpire, Redis));
//can now lock
distributedLock = new DistributedLock();
Assert.AreEqual(distributedLock.Lock(key, lockTimeout, lockTimeout, out lockExpire, Redis), DistributedLock.LOCK_ACQUIRED);
//cleanup
Assert.IsTrue(distributedLock.Unlock(key, lockExpire, Redis));
}
/// <summary>
///
/// </summary>
/// <param name="key"></param>
public override void Unlock(object key)
{
if (!AcquiredLocks.ContainsKey(key))
return;
using (var disposable = new PooledRedisClientManager.DisposablePooledClient<SerializingRedisClient>(ClientManager))
{
var aLock = new DistributedLock();
var globalKey = CacheNamespace.GlobalKey(key, RedisNamespace.NumTagsForLockKey);
if (aLock.Unlock(globalKey, AcquiredLocks[key], disposable.Client))
AcquiredLocks.Remove(key);
}
}
public SerializingRedisClient(string host, int port)
: base(host, port)
{
myLock = new DistributedLock(this);
}
/// <summary>
///
/// </summary>
/// <param name="key"></param>
public override void Lock(object key)
{
using (var disposable = new PooledRedisClientManager.DisposablePooledClient<SerializingRedisClient>(ClientManager))
{
long lockExpire = 0;
var aLock = new DistributedLock();
var globalKey = CacheNamespace.GlobalKey(key, RedisNamespace.NumTagsForLockKey);
try
{
long rc = aLock.Lock(globalKey, _lockAcquisitionTimeout, _lockTimeout, out lockExpire, disposable.Client);
if (rc != DistributedLock.LOCK_NOT_ACQUIRED)
AcquiredLocks[key] = lockExpire;
}
catch (Exception)
{
if (lockExpire != 0)
aLock.Unlock(globalKey, lockExpire, disposable.Client);
}
}
}
