public static ExpirationHint ReadExpHint(CompactReader reader)
{
ExpirationHintType expHint = ExpirationHintType.Parent;
expHint = (ExpirationHintType)reader.ReadInt16();
ExpirationHint tmpObj = null;
switch (expHint)
{
case ExpirationHintType.NULL:
return(null);
case ExpirationHintType.Parent:
tmpObj = (ExpirationHint)reader.ReadObject();
return((ExpirationHint)tmpObj);
case ExpirationHintType.FixedExpiration:
FixedExpiration fe = new FixedExpiration();
((ICompactSerializable)fe).Deserialize(reader);
return((ExpirationHint)fe);
case ExpirationHintType.IdleExpiration:
IdleExpiration ie = new IdleExpiration();
((ICompactSerializable)ie).Deserialize(reader);
return((ExpirationHint)ie);
default:
break;
}
return(null);
}
public static FixedIdleExpiration Create(PoolManager poolManager, TimeSpan idleTime, DateTime absoluteTime)
{
var expiration = Create(poolManager);
Construct(expiration, FixedExpiration.Create(poolManager, absoluteTime), IdleExpiration.Create(poolManager, idleTime));
return(expiration);
}
public static ExpirationHint ReadExpHint(CompactReader reader, PoolManager poolManager)
{
ExpirationHintType expHint = ExpirationHintType.Parent;
expHint = (ExpirationHintType)reader.ReadInt16();
switch (expHint)
{
case ExpirationHintType.NULL:
return(null);
case ExpirationHintType.Parent:
return((ExpirationHint)reader.ReadObject());
case ExpirationHintType.FixedExpiration:
var fe = FixedExpiration.Create(poolManager);
fe.Deserialize(reader);
return(fe);
case ExpirationHintType.TTLExpiration:
var ttle = TTLExpiration.Create(poolManager);
((ICompactSerializable)ttle).Deserialize(reader);
return(ttle);
case ExpirationHintType.FixedIdleExpiration:
var fie = FixedIdleExpiration.Create(poolManager);
((ICompactSerializable)fie).Deserialize(reader);
return(fie);
#if !(DEVELOPMENT || CLIENT)
case ExpirationHintType.NodeExpiration:
var ne = NodeExpiration.Create(poolManager);
((ICompactSerializable)ne).Deserialize(reader);
return(ne);
#endif
case ExpirationHintType.IdleExpiration:
var ie = IdleExpiration.Create(poolManager);
((ICompactSerializable)ie).Deserialize(reader);
return(ie);
case ExpirationHintType.AggregateExpirationHint:
var aeh = AggregateExpirationHint.Create(poolManager);
((ICompactSerializable)aeh).Deserialize(reader);
return(aeh);
case ExpirationHintType.DependencyHint:
break;
default:
break;
}
return(null);
}
public static ExpirationHint GetExpirationHint(DateTime absoluteExpiration, TimeSpan slidingExpiration)
{
ExpirationHint hint = null;
if (DateTime.MaxValue.ToUniversalTime().Equals(absoluteExpiration) && TimeSpan.Zero.Equals(slidingExpiration))
return null;
if (DateTime.MaxValue.ToUniversalTime().Equals(absoluteExpiration))
hint = new IdleExpiration(slidingExpiration);
else
{
absoluteExpiration = absoluteExpiration.ToUniversalTime();
hint = new FixedExpiration(absoluteExpiration);
}
return hint;
}
public static ExpirationHint GetExpirationHint(DateTime absoluteExpiration, TimeSpan slidingExpiration)
{
ExpirationHint hint = null;
if (DateTime.MaxValue.ToUniversalTime().Equals(absoluteExpiration) && TimeSpan.Zero.Equals(slidingExpiration))
{
return(null);
}
if (DateTime.MaxValue.ToUniversalTime().Equals(absoluteExpiration))
{
hint = new IdleExpiration(slidingExpiration);
}
else
{
absoluteExpiration = absoluteExpiration.ToUniversalTime();
hint = new FixedExpiration(absoluteExpiration);
}
return(hint);
}
private static ExpirationHint GetExpirationHint(PoolManager poolManager, DateTime absoluteExpiration, TimeSpan slidingExpiration)
{
ExpirationHint hint = null;
if (ExpirationConstants.AbsoluteNoneExpiration.ToUniversalTime().Equals(absoluteExpiration) && ExpirationConstants.SlidingNoneExpiration.Equals(slidingExpiration))
{
return(null);
}
if (!ExpirationConstants.AbsoluteNoneExpiration.ToUniversalTime().Equals(absoluteExpiration.ToUniversalTime()))
{
absoluteExpiration = absoluteExpiration.ToUniversalTime();
hint = FixedExpiration.Create(poolManager, absoluteExpiration);
}
else if (!ExpirationConstants.SlidingNoneExpiration.Equals(slidingExpiration))
{
hint = IdleExpiration.Create(poolManager, slidingExpiration);
}
return(hint);
}
/// <summary>
/// Called by the scheduler to remove the items that has expired
/// </summary>
public bool Expire()
{
//indicates whether some items expired during this interval or not...
bool expired = false;
//if user has updated the file then the new values will be reloaded.
_sleepInterval = ServiceConfiguration.ExpirationBulkRemoveDelay;
_removeThreshhold = ServiceConfiguration.ExpirationBulkRemoveSize;
CacheBase cacheInst = _context.CacheImpl;
CacheBase cache = _context.CacheInternal;
Cache rootCache = _context.CacheRoot;
if (cache == null)
{
throw new InvalidOperationException("No cache instance defined");
}
bool allowExpire = AllowClusteredExpiry;
//in case of replication and por, only the coordinator/sub-coordinator is responsible to expire the items.
if (!allowExpire)
{
return(false);
}
ClusteredArrayList selectedKeys = new ClusteredArrayList();
int oldItemsCount = 0;
HashVector oldeItems = null;
try
{
StartLogging();
DateTime startTime = DateTime.Now;
int currentTime = AppUtil.DiffSeconds(startTime);
int cleanSize = (int)Math.Ceiling(cache.Count * _cleanRatio);
//set the flag that we are going to expire the items.
if (_cacheLastAccessLoggingIntervalPassed >= _cacheLastAccessLoggingInterval)
{
_cacheLastAccessLoggingInterval = CacheLastAccessLoggingInterval;
_cacheLastAccessCountEnabled = IsCacheLastAccessCountEnabled;
_cacheLastAccessCountLoggingEnabled = IsCacheLastAccessLoggingEnabled;
_cacheLastAccessInterval = CacheLastAccessCountInterval;
}
else
{
_cacheLastAccessLoggingIntervalPassed++;
}
if (_cacheLastAccessCountEnabled && _cacheLastAccessCountLoggingEnabled)
{
if (_cacheLastAccessLoggingIntervalPassed >= _cacheLastAccessLoggingInterval)
{
_cacheLastAccessLoggingIntervalPassed = 0;
oldeItems = new HashVector();
}
}
lock (_mainIndex.SyncRoot)
{
IDictionaryEnumerator em = _mainIndex.GetEnumerator();
if (em != null)
{
while (em.MoveNext())
{
ExpirationHint hint = em.Value as ExpirationHint;
if (hint != null && _cacheLastAccessCountEnabled && hint is IdleExpiration)
{
IdleExpiration slidingExpHint = hint as IdleExpiration;
TimeSpan diff = AppUtil.GetDateTime(AppUtil.DiffSeconds(DateTime.Now)) - AppUtil.GetDateTime(slidingExpHint.LastAccessTime);
if (diff.TotalMinutes >= _cacheLastAccessInterval)
{
oldItemsCount++;
if (oldeItems != null)
{
oldeItems.Add(em.Key, null);
}
}
}
if (hint == null || hint.SortKey.CompareTo(currentTime) >= 0)
{
continue;
}
if (hint.DetermineExpiration(_context))
{
selectedKeys.Add(em.Key);
if (cleanSize > 0 && selectedKeys.Count == cleanSize)
{
break;
}
}
}
}
}
if (NCacheLog.IsInfoEnabled)
{
NCacheLog.Info("ExpirationManager.Expire()", String.Format("Expiry time for {0}/{1} Items: " + (DateTime.UtcNow - startTime), selectedKeys.Count, /*_expiryIndex.KeyCount*/ cache.Count));
}
}
catch (Exception e)
{
NCacheLog.Error("ExpirationManager.Expire(bool)", "LocalCache(Expire): " + e.ToString());
}
finally
{
_context.PerfStatsColl.IncrementCacheLastAccessCountStats(oldItemsCount);
ApplyLoggs();
ClusteredArrayList dependentItems = new ClusteredArrayList();
DateTime startTime = DateTime.Now;
HashVector expiredItemTable = new HashVector();
expiredItemTable.Add(ItemRemoveReason.Expired, selectedKeys);//Time based expiration
try
{
IDictionaryEnumerator ide = expiredItemTable.GetEnumerator();
while (ide.MoveNext())
{
selectedKeys = ide.Value as ClusteredArrayList;
ItemRemoveReason removedReason = (ItemRemoveReason)ide.Key;
if (selectedKeys.Count > 0)
{
//new architectural changes begins from here.
ClusteredArrayList keysTobeRemoved = new ClusteredArrayList();
for (int i = 0; i < selectedKeys.Count && !_cacheCleared; i++)
{
keysTobeRemoved.Add(selectedKeys[i]);
if (keysTobeRemoved.Count % _removeThreshhold == 0)
{
try
{
if (this.IsDisposed)
{
break;
}
OperationContext operationContext = new OperationContext(OperationContextFieldName.OperationType, OperationContextOperationType.CacheOperation);
object[][] keysExposed = keysTobeRemoved.ToInternalArray();
foreach (object[] collection in keysExposed)
{
cache.RemoveSync(collection, removedReason, false, operationContext);
}
//set the flag that item has expired from cache...
expired = true;
if (_context.PerfStatsColl != null)
{
_context.PerfStatsColl.IncrementExpiryPerSecStatsBy(keysTobeRemoved.Count);
}
}
catch (Exception e)
{
NCacheLog.Error("ExpiryManager.Expire", "an error occurred while removing expired items. Error " + e.ToString());
}
keysTobeRemoved.Clear();
//we stop the activity of the current thread so that normal user operation is not affected.
Thread.Sleep(_sleepInterval);
}
}
if (!this.IsDisposed && keysTobeRemoved.Count > 0)
{
try
{
OperationContext operationContext = new OperationContext(OperationContextFieldName.OperationType, OperationContextOperationType.CacheOperation);
object[][] keysExposed = keysTobeRemoved.ToInternalArray();
foreach (object[] keyCollection in keysExposed)
{
cache.RemoveSync(keyCollection, removedReason, false, operationContext);
}
//set the flag that item has expired from cache...
expired = true;
if (_context.PerfStatsColl != null)
{
_context.PerfStatsColl.IncrementExpiryPerSecStatsBy(keysTobeRemoved.Count);
}
}
catch (Exception e)
{
NCacheLog.Error("ExpiryManager.Expire", "an error occurred while removing expired items. Error " + e.ToString());
}
}
}
}
}
finally
{
_transitoryIndex.Clear();
lock (this)
{
_cacheCleared = false;
}
if (oldeItems != null)
{
StringBuilder sb = new StringBuilder();
IDictionaryEnumerator ide = oldeItems.GetEnumerator();
int count = 1;
while (ide.MoveNext())
{
sb.Append(ide.Key + ", ");
if (count % 10 == 0)
{
sb.Append("\r\n");
count = 1;
}
else
{
count++;
}
}
NCacheLog.Info(sb.ToString().Trim());
}
}
}
return(expired);
}
public static ExpirationHint GetExpirationHintObj(long absoluteExpiration, long slidingExpiration, string serializationContext)
{
ExpirationHint hint = null;
//We expect Web.Cache to send in UTC DateTime, AbsoluteExpiration is dealt in UTC
if (absoluteExpiration != 0 && absoluteExpiration != DateTime.MaxValue.ToUniversalTime().Ticks) hint = new FixedExpiration(new DateTime(absoluteExpiration, DateTimeKind.Utc));
if (slidingExpiration != 0) hint = new IdleExpiration(new TimeSpan(slidingExpiration));
return hint;
}
private static ExpirationHint GetExpirationHint(ExpirationPolicy policy, DateTime absoluteExpiration, TimeSpan slidingExpiration)
{
ExpirationHint hint = null;
if (policy.SlidingExpiration.LongerEnabled || policy.SlidingExpiration.DefaultEnabled || policy.AbsoluteExpiration.LongerEnabled || policy.AbsoluteExpiration.DefaultEnabled)
{
if ((absoluteExpiration == AbsoluteDefaultExpiration.ToUniversalTime() || absoluteExpiration == AbsoluteLongerExpiration.ToUniversalTime() || (slidingExpiration == SlidingDefaultExpiration || slidingExpiration == SlidingLongerExpiration)))
{
#region In case user provides sliding expiration as an enum
if (absoluteExpiration == DateTime.MaxValue)
{
if (slidingExpiration == SlidingLongerExpiration && policy.SlidingExpiration.LongerEnabled)
{
hint = new IdleExpiration(new TimeSpan(policy.SlidingExpiration.Longer * TICKS));
}
else if (slidingExpiration == SlidingDefaultExpiration && policy.SlidingExpiration.DefaultEnabled)
{
hint = new IdleExpiration(new TimeSpan(policy.SlidingExpiration.Default * TICKS));
}
}
#endregion
#region In case user provides absolute expiration as an enum
if (slidingExpiration == TimeSpan.Zero)
{
if (absoluteExpiration == AbsoluteLongerExpiration.ToUniversalTime() && policy.AbsoluteExpiration.LongerEnabled)// check if Longer is enabled in config
{
hint = new FixedExpiration(DateTime.Now.AddSeconds(policy.AbsoluteExpiration.Longer).ToUniversalTime());
}
else if (absoluteExpiration == AbsoluteDefaultExpiration.ToUniversalTime() && policy.AbsoluteExpiration.DefaultEnabled)
{
hint = new FixedExpiration(DateTime.Now.AddSeconds(policy.AbsoluteExpiration.Default).ToUniversalTime());
}
}
#endregion
// If no expirations were enabled we have to assign the default expiration
}
else
{
if (hint == null)
{
hint = new FixedExpiration(DateTime.Now.AddSeconds(policy.AbsoluteExpiration.Default).ToUniversalTime());
}
}
}
if (DateTime.MaxValue.ToUniversalTime().Equals(absoluteExpiration) && TimeSpan.Zero.Equals(slidingExpiration))
{
return(null);
}
if (DateTime.MaxValue.ToUniversalTime().Equals(absoluteExpiration))
{
hint = new IdleExpiration(slidingExpiration);
}
else
{
absoluteExpiration = absoluteExpiration.ToUniversalTime();
hint = new FixedExpiration(absoluteExpiration);
}
return(hint);
}
public static ExpirationHint ReadExpHint(CompactReader reader)
{
ExpirationHintType expHint = ExpirationHintType.Parent;
expHint = (ExpirationHintType)reader.ReadInt16();
ExpirationHint tmpObj = null;
switch (expHint)
{
case ExpirationHintType.NULL:
return(null);
case ExpirationHintType.Parent:
tmpObj = (ExpirationHint)reader.ReadObject();
return((ExpirationHint)tmpObj);
case ExpirationHintType.FixedExpiration:
FixedExpiration fe = new FixedExpiration();
((ICompactSerializable)fe).Deserialize(reader);
return((ExpirationHint)fe);
case ExpirationHintType.TTLExpiration:
TTLExpiration ttle = new TTLExpiration();
((ICompactSerializable)ttle).Deserialize(reader);
return((ExpirationHint)ttle);
case ExpirationHintType.TTLIdleExpiration:
TTLIdleExpiration ttlie = new TTLIdleExpiration();
((ICompactSerializable)ttlie).Deserialize(reader);
return((ExpirationHint)ttlie);
case ExpirationHintType.FixedIdleExpiration:
FixedIdleExpiration fie = new FixedIdleExpiration();
((ICompactSerializable)fie).Deserialize(reader);
return((ExpirationHint)fie);
case ExpirationHintType.FileDependency:
FileDependency fd = new FileDependency();
((ICompactSerializable)fd).Deserialize(reader);
return((ExpirationHint)fd);
case ExpirationHintType.KeyDependency:
KeyDependency kd = new KeyDependency();
((ICompactSerializable)kd).Deserialize(reader);
return((ExpirationHint)kd);
#if !(DEVELOPMENT || CLIENT)
case ExpirationHintType.NodeExpiration:
NodeExpiration ne = new NodeExpiration();
((ICompactSerializable)ne).Deserialize(reader);
return((ExpirationHint)ne);
#endif
case ExpirationHintType.Sql7CacheDependency:
Sql7CacheDependency s7cd = new Sql7CacheDependency();
((ICompactSerializable)s7cd).Deserialize(reader);
return((ExpirationHint)s7cd);
case ExpirationHintType.OleDbCacheDependency:
OleDbCacheDependency oledbDependency = new OleDbCacheDependency();
((ICompactSerializable)oledbDependency).Deserialize(reader);
return((ExpirationHint)oledbDependency);
case ExpirationHintType.SqlYukonCacheDependency:
SqlYukonCacheDependency sycd = new SqlYukonCacheDependency();
((ICompactSerializable)sycd).Deserialize(reader);
return((ExpirationHint)sycd);
case ExpirationHintType.OracleCacheDependency:
OracleCacheDependency orclcd = new OracleCacheDependency();
((ICompactSerializable)orclcd).Deserialize(reader);
return((ExpirationHint)orclcd);
case ExpirationHintType.IdleExpiration:
IdleExpiration ie = new IdleExpiration();
((ICompactSerializable)ie).Deserialize(reader);
return((ExpirationHint)ie);
case ExpirationHintType.AggregateExpirationHint:
AggregateExpirationHint aeh = new AggregateExpirationHint();
((ICompactSerializable)aeh).Deserialize(reader);
return((ExpirationHint)aeh);
case ExpirationHintType.DBCacheDependency:
DBCacheDependency dbcd = new DBCacheDependency();
((ICompactSerializable)dbcd).Deserialize(reader);
return((ExpirationHint)dbcd);
case ExpirationHintType.ExtensibleDependency:
ExtensibleDependency ed = new ExtensibleDependency();
ed = (ExtensibleDependency)reader.ReadObject();
return((ExpirationHint)ed);
case ExpirationHintType.NosDBCacheDependency:
NosDBCacheDependency nosDbd = new NosDBCacheDependency();
((ICompactSerializable)nosDbd).Deserialize(reader);
return(nosDbd);
case ExpirationHintType.DependencyHint:
break;
default:
break;
}
return(null);
}
/// <summary>
/// Called by the scheduler to remove the items that has expired
/// </summary>
public bool Expire()
{
//indicates whether some items expired during this interval or not...
bool expired = false;
//if user has updated the file then the new values will be reloaded.
_sleepInterval = ServiceConfiguration.ExpirationBulkRemoveDelay;
_removeThreshhold = ServiceConfiguration.ExpirationBulkRemoveSize;
//notification is sent for a max of 100k data if multiple items...
//otherwise if a single item is greater than 100k then notification is sent for
//that item only...
int notifThreshold = 30 * 1024;
CacheBase cacheInst = _context.CacheImpl;
CacheBase cache = _context.CacheInternal;
Cache rootCache = _context.CacheRoot;
object[] keys = null;
object[] values = null;
if (cache == null)
{
throw new InvalidOperationException("No cache instance defined");
}
if (_context.ReaderMgr != null)
{
_context.ReaderMgr.ExpireReader(CleanInterval);
}
bool allowExpire = AllowClusteredExpiry;
//in case of replication and por, only the coordinator/sub-coordinator is responsible to expire the items.
if (!allowExpire)
{
return(false);
}
ClusteredArrayList selectedKeys = new ClusteredArrayList();
ClusteredArrayList dependencyChangedSelectedKeys = new ClusteredArrayList();
int oldItemsCount = 0;
HashVector oldeItems = null;
try
{
StartLogging();
DateTime startTime = DateTime.Now;
int currentTime = AppUtil.DiffSeconds(startTime);
if (_context.IsDbSyncCoordinator)
{
_cdbSyncMgr.AcquireSyncData();
// get the modified keys. and bulk remove them all. this returns
// keys from both sql and oledb providers.
IDictionary dbkeys = _cdbSyncMgr.GetExpiredKeys();
if (dbkeys.Count > 0)
{
ClusteredArrayList expire = dbkeys["expire-items"] as ClusteredArrayList;
ClusteredArrayList resync = dbkeys["resync-items"] as ClusteredArrayList;
if (_context.CacheImpl == null)
{
return(false);
}
if (expire.Count > 0)
{
OperationContext operationContext = new OperationContext(OperationContextFieldName.OperationType, OperationContextOperationType.CacheOperation);
operationContext.Add(OperationContextFieldName.RaiseCQNotification, true);
_topLevelCache.CascadedRemove(expire, ItemRemoveReason.DependencyChanged, true, operationContext);
_cdbSyncMgr.FlushSyncData();
//set the flag that item has expired from cache.
expired = true;
}
if (resync.Count > 0 && _context.DsMgr != null)
{
IEnumerator e = resync.GetEnumerator();
while (e.MoveNext())
{
CacheEntry oldEntry = cache.Get(e.Current, new OperationContext(OperationContextFieldName.OperationType, OperationContextOperationType.CacheOperation));
if (oldEntry != null)
{
_context.DsMgr.ResyncCacheItemAsync(e.Current, oldEntry.ExpirationHint, null, oldEntry.GroupInfo, oldEntry.QueryInfo, oldEntry.ResyncProviderName);
}
else
{
_context.DsMgr.ResyncCacheItemAsync(e.Current, oldEntry.ExpirationHint, null, null, null, oldEntry.ResyncProviderName);
}
}
}
}
}
int cleanSize = (int)Math.Ceiling(cache.Count * _cleanRatio);
//set the flag that we are going to expire the items.
if (_cacheLastAccessLoggingIntervalPassed >= _cacheLastAccessLoggingInterval)
{
_cacheLastAccessLoggingInterval = CacheLastAccessLoggingInterval;
_cacheLastAccessCountEnabled = IsCacheLastAccessCountEnabled;
_cacheLastAccessCountLoggingEnabled = IsCacheLastAccessLoggingEnabled;
_cacheLastAccessInterval = CacheLastAccessCountInterval;
}
else
{
_cacheLastAccessLoggingIntervalPassed++;
}
if (_cacheLastAccessCountEnabled && _cacheLastAccessCountLoggingEnabled)
{
if (_cacheLastAccessLoggingIntervalPassed >= _cacheLastAccessLoggingInterval)
{
_cacheLastAccessLoggingIntervalPassed = 0;
oldeItems = new HashVector();
}
}
lock (_mainIndex.SyncRoot)
{
IDictionaryEnumerator em = _mainIndex.GetEnumerator(); //added by muds
if (em != null)
{
while (em.MoveNext())
{
ExpirationHint hint = em.Value as ExpirationHint;
if (hint != null && _cacheLastAccessCountEnabled && hint is IdleExpiration)
{
IdleExpiration slidingExpHint = hint as IdleExpiration;
TimeSpan diff = AppUtil.GetDateTime(AppUtil.DiffSeconds(DateTime.Now)) - AppUtil.GetDateTime(slidingExpHint.LastAccessTime);
if (diff.TotalMinutes >= _cacheLastAccessInterval)
{
oldItemsCount++;
if (oldeItems != null)
{
oldeItems.Add(em.Key, null);
}
}
}
if (hint == null || hint.SortKey.CompareTo(currentTime) >= 0)
{
continue;
}
if (!allowExpire && hint.IsRoutable)
{
continue;
}
if (hint.DetermineExpiration(_context))
{
if (hint.NeedsReSync && _context.DsMgr != null)
{
//get old entry to know existing groupinfo and queryinfo for tag purposes.
CacheEntry oldEntry = cache.Get(em.Key, new OperationContext(OperationContextFieldName.OperationType, OperationContextOperationType.CacheOperation));
if (oldEntry != null)
{
_context.DsMgr.ResyncCacheItemAsync(em.Key, hint, null, oldEntry.GroupInfo, oldEntry.QueryInfo, oldEntry.ResyncProviderName);
}
else
{
_context.DsMgr.ResyncCacheItemAsync(em.Key, hint, null, null, null, oldEntry.ResyncProviderName);
}
}
else
{
if (hint.GetExpiringHint() is FixedExpiration || hint.GetExpiringHint() is IdleExpiration)
{
selectedKeys.Add(em.Key);
}
else
{
dependencyChangedSelectedKeys.Add(em.Key);
}
}
if (cleanSize > 0 && selectedKeys.Count == cleanSize)
{
break;
}
}
}
}
}
if (NCacheLog.IsInfoEnabled)
{
NCacheLog.Info("ExpirationManager.Expire()", String.Format("Expiry time for {0}/{1} Items: " + (DateTime.UtcNow - startTime), selectedKeys.Count, /*_expiryIndex.KeyCount*/ cache.Count));
}
}
catch (Exception e)
{
NCacheLog.Error("ExpirationManager.Expire(bool)", "LocalCache(Expire): " + e.ToString());
}
finally
{
_context.PerfStatsColl.IncrementCacheLastAccessCountStats(oldItemsCount);
ApplyLoggs();
ClusteredArrayList dependentItems = new ClusteredArrayList();
ClusteredArrayList removedItems = new ClusteredArrayList();
DateTime startTime = DateTime.Now;
HashVector expiredItemTable = new HashVector();
expiredItemTable.Add(ItemRemoveReason.Expired, selectedKeys); //Time based expiration
expiredItemTable.Add(ItemRemoveReason.DependencyChanged, dependencyChangedSelectedKeys); //FileDependency or any other
try
{
IDictionaryEnumerator ide = expiredItemTable.GetEnumerator();
while (ide.MoveNext())
{
selectedKeys = ide.Value as ClusteredArrayList;
ItemRemoveReason removedReason = (ItemRemoveReason)ide.Key;
if (selectedKeys.Count > 0)
{
//new architectural changes begins from here.
ClusteredArrayList keysTobeRemoved = new ClusteredArrayList();
for (int i = 0; i < selectedKeys.Count && !_cacheCleared; i++)
{
keysTobeRemoved.Add(selectedKeys[i]);
if (keysTobeRemoved.Count % _removeThreshhold == 0)
{
try
{
if (this.IsDisposed)
{
break;
}
OperationContext operationContext = new OperationContext(OperationContextFieldName.OperationType, OperationContextOperationType.CacheOperation);
operationContext.Add(OperationContextFieldName.RaiseCQNotification, true);
object[][] keysExposed = keysTobeRemoved.ToInternalArray();
foreach (object[] keyCollection in keysExposed)
{
ArrayList removed = cache.RemoveSync(keyCollection, removedReason, false, operationContext) as ArrayList;
if (removed != null)
{
removedItems.AddRange(removed);
}
}
//set the flag that item has expired from cache...
expired = true;
if (_context.PerfStatsColl != null)
{
_context.PerfStatsColl.IncrementExpiryPerSecStatsBy(keysTobeRemoved.Count);
}
}
catch (Exception e)
{
NCacheLog.Error("ExpiryManager.Expire", "an error occurred while removing expired items. Error " + e.ToString());
}
keysTobeRemoved.Clear();
if (removedItems != null && removedItems.Count > 0)
{
dependentItems.AddRange(removedItems);
removedItems.Clear();
}
//we stop the activity of the current thread so that normal user operation is not affected.
Thread.Sleep(_sleepInterval * 1000);
}
}
if (!this.IsDisposed && keysTobeRemoved.Count > 0)
{
try
{
OperationContext operationContext = new OperationContext(OperationContextFieldName.OperationType, OperationContextOperationType.CacheOperation);
operationContext.Add(OperationContextFieldName.RaiseCQNotification, true);
object[][] keysExposed = keysTobeRemoved.ToInternalArray();
foreach (object[] keyCollection in keysExposed)
{
ArrayList removed = cache.RemoveSync(keyCollection, removedReason, false, operationContext) as ArrayList;
if (removed != null)
{
removedItems.AddRange(removed);
}
}
//set the flag that item has expired from cache...
expired = true;
if (_context.PerfStatsColl != null)
{
_context.PerfStatsColl.IncrementExpiryPerSecStatsBy(keysTobeRemoved.Count);
}
if (removedItems != null && removedItems.Count > 0)
{
dependentItems.AddRange(removedItems);
removedItems.Clear();
}
}
catch (Exception e)
{
NCacheLog.Error("ExpiryManager.Expire", "an error occurred while removing expired items. Error " + e.ToString());
}
}
}
}
if (!this.IsDisposed && dependentItems.Count > 0)
{
ClusteredArrayList removableList = new ClusteredArrayList();
if (rootCache != null)
{
foreach (object depenentItme in dependentItems)
{
if (depenentItme == null)
{
continue;
}
removableList.Add(depenentItme);
if (removableList.Count % 100 == 0)
{
try
{
if (this.IsDisposed)
{
break;
}
OperationContext operationContext = new OperationContext(OperationContextFieldName.OperationType, OperationContextOperationType.CacheOperation);
operationContext.Add(OperationContextFieldName.RaiseCQNotification, true);
rootCache.CascadedRemove(removableList, ItemRemoveReason.DependencyChanged, true, operationContext);
if (_context.PerfStatsColl != null)
{
_context.PerfStatsColl.IncrementExpiryPerSecStatsBy(removableList.Count);
}
}
catch (Exception exc)
{
NCacheLog.Error("ExpiryManager.Expire", "an error occurred while removing dependent items. Error " + exc.ToString());
}
removableList.Clear();
}
}
if (!this.IsDisposed && removableList.Count > 0)
{
try
{
OperationContext operationContext = new OperationContext(OperationContextFieldName.OperationType, OperationContextOperationType.CacheOperation);
operationContext.Add(OperationContextFieldName.RaiseCQNotification, true);
rootCache.CascadedRemove(removableList, ItemRemoveReason.DependencyChanged, true, operationContext);
if (_context.PerfStatsColl != null)
{
_context.PerfStatsColl.IncrementExpiryPerSecStatsBy(removableList.Count);
}
}
catch (Exception exc)
{
NCacheLog.Error("ExpiryManager.Expire", "an error occurred while removing dependent items. Error " + exc.ToString());
}
removableList.Clear();
}
}
}
}
finally
{
_transitoryIndex.Clear();
lock (this)
{
_cacheCleared = false;
}
if (oldeItems != null)
{
StringBuilder sb = new StringBuilder();
IDictionaryEnumerator ide = oldeItems.GetEnumerator();
int count = 1;
while (ide.MoveNext())
{
sb.Append(ide.Key + ", ");
if (count % 10 == 0)
{
sb.Append("\r\n");
count = 1;
}
else
{
count++;
}
}
NCacheLog.Info(sb.ToString().Trim());
}
}
}
return(expired);
}
public static ExpirationHint ReadExpHint(CompactReader reader)
{
ExpirationHintType expHint = ExpirationHintType.Parent;
expHint = (ExpirationHintType)reader.ReadInt16();
ExpirationHint tmpObj = null;
switch (expHint)
{
case ExpirationHintType.NULL:
return null;
case ExpirationHintType.Parent:
tmpObj = (ExpirationHint)reader.ReadObject();
return (ExpirationHint)tmpObj;
case ExpirationHintType.FixedExpiration:
FixedExpiration fe = new FixedExpiration();
((ICompactSerializable)fe).Deserialize(reader);
return (ExpirationHint)fe;
case ExpirationHintType.IdleExpiration:
IdleExpiration ie = new IdleExpiration();
((ICompactSerializable)ie).Deserialize(reader);
return (ExpirationHint)ie;
default:
break;
}
return null;
}
