internal RpcDatabaseCopyStatus2 GetCopyStatus(RpcGetDatabaseCopyStatusFlags2 flags)
{
if ((flags & RpcGetDatabaseCopyStatusFlags2.ReadThrough) == RpcGetDatabaseCopyStatusFlags2.None)
{
return(this.GetCachedCopyStatus(flags));
}
RpcDatabaseCopyStatus2 copyStatusWithTimeout = this.GetCopyStatusWithTimeout(flags);
CopyStatusServerCachedEntry copyStatusServerCachedEntry = this.UpdateCachedCopyStatus(copyStatusWithTimeout);
return(copyStatusServerCachedEntry.CopyStatus);
}
private CopyStatusServerCachedEntry UpdateCachedCopyStatus(RpcDatabaseCopyStatus2 status)
{
CopyStatusServerCachedEntry copyStatusServerCachedEntry = new CopyStatusServerCachedEntry(status);
CopyStatusServerCachedEntry cachedStatus;
lock (this.m_statusCacheLocker)
{
if (CopyStatusHelper.CheckCopyStatusNewer(copyStatusServerCachedEntry, this.m_cachedStatus))
{
this.m_cachedStatus = copyStatusServerCachedEntry;
}
cachedStatus = this.m_cachedStatus;
}
return(cachedStatus);
}
private RpcDatabaseCopyStatus2 GetCachedCopyStatus(RpcGetDatabaseCopyStatusFlags2 flags)
{
CopyStatusServerCachedEntry copyStatusServerCachedEntry = this.m_cachedStatus;
if (this.IsCopyStatusReadThroughNeeded(copyStatusServerCachedEntry))
{
TimeSpan copyStatusServerTimeout = ReplicaInstanceContainer.CopyStatusServerTimeout;
bool flag = Monitor.TryEnter(this.m_statusCallLocker);
try
{
if (!flag)
{
ManualOneShotEvent.Result result = this.m_firstCachedStatusCallCompleted.WaitOne(copyStatusServerTimeout);
if (result != ManualOneShotEvent.Result.Success)
{
throw new ReplayServiceRpcCopyStatusTimeoutException(this.ReplicaInstance.Configuration.DisplayName, (int)copyStatusServerTimeout.TotalSeconds);
}
lock (this.m_statusCacheLocker)
{
copyStatusServerCachedEntry = this.m_cachedStatus;
if (copyStatusServerCachedEntry == null)
{
throw new ReplayServiceRpcCopyStatusTimeoutException(this.ReplicaInstance.Configuration.DisplayName, (int)copyStatusServerTimeout.TotalSeconds);
}
if (copyStatusServerCachedEntry.CreateTimeUtc < DateTime.UtcNow - ReplicaInstanceContainer.CopyStatusStaleTimeout)
{
Exception ex = new ReplayServiceRpcCopyStatusTimeoutException(this.ReplicaInstance.Configuration.DisplayName, (int)ReplicaInstanceContainer.CopyStatusStaleTimeout.TotalSeconds);
copyStatusServerCachedEntry.CopyStatus.CopyStatus = CopyStatusEnum.Failed;
copyStatusServerCachedEntry.CopyStatus.ErrorMessage = ex.Message;
copyStatusServerCachedEntry.CopyStatus.ExtendedErrorInfo = new ExtendedErrorInfo(ex);
}
return(copyStatusServerCachedEntry.CopyStatus);
}
}
copyStatusServerCachedEntry = this.m_cachedStatus;
if (this.IsCopyStatusReadThroughNeeded(copyStatusServerCachedEntry))
{
try
{
ExTraceGlobals.ReplayServiceRpcTracer.TraceDebug <string, Guid>((long)this.GetHashCode(), "GetCachedCopyStatus() for DB '{0}' ({1}): Cache TTL expired or force refresh requested.", this.ReplicaInstance.Configuration.DisplayName, this.ReplicaInstance.Configuration.IdentityGuid);
RpcDatabaseCopyStatus2 copyStatusWithTimeout = this.GetCopyStatusWithTimeout(flags);
copyStatusServerCachedEntry = this.UpdateCachedCopyStatus(copyStatusWithTimeout);
}
catch (TimeoutException arg)
{
ExTraceGlobals.ReplayServiceRpcTracer.TraceError <string, TimeoutException>((long)this.GetHashCode(), "GetCachedCopyStatus() Timeout for DB '{0}': {1}", this.ReplicaInstance.Configuration.DisplayName, arg);
throw new ReplayServiceRpcCopyStatusTimeoutException(this.ReplicaInstance.Configuration.DisplayName, (int)copyStatusServerTimeout.TotalSeconds);
}
finally
{
this.m_firstCachedStatusCallCompleted.Set();
}
}
}
finally
{
if (flag)
{
Monitor.Exit(this.m_statusCallLocker);
}
}
}
return(copyStatusServerCachedEntry.CopyStatus);
}
private bool IsCopyStatusReadThroughNeeded(CopyStatusServerCachedEntry cachedStatus)
{
return(cachedStatus == null || cachedStatus.ForceRefresh || cachedStatus.CreateTimeUtc < DateTime.UtcNow - ReplicaInstanceContainer.CopyStatusCacheTTL);
}
