private bool TrySelectDomainController(ITopologyConfigurationSession session, string domainControllerFqdn, PartitionId partitionId, bool checkSuitability, out Guid resultInvocationId)
{
ExTraceGlobals.ActiveDirectoryTracer.TraceDebug <string>((long)base.TenantExternalDirectoryId.GetHashCode(), "MergePageToken.TrySelectDomainController dc {0}", domainControllerFqdn);
resultInvocationId = Guid.Empty;
string text;
LocalizedString localizedString;
if (checkSuitability && !SuitabilityVerifier.IsServerSuitableIgnoreExceptions(domainControllerFqdn, false, null, out text, out localizedString))
{
ExTraceGlobals.ActiveDirectoryTracer.TraceWarning <string, string>((long)base.TenantExternalDirectoryId.GetHashCode(), "DC {0} is not available for Tenant Full Backsync, error {1}", domainControllerFqdn, localizedString.ToString());
return(false);
}
ITopologyConfigurationSession configSession = DirectorySessionFactory.Default.CreateTopologyConfigurationSession(domainControllerFqdn, true, ConsistencyMode.IgnoreInvalid, null, ADSessionSettings.FromAccountPartitionRootOrgScopeSet(partitionId), 461, "TrySelectDomainController", "f:\\15.00.1497\\sources\\dev\\data\\src\\directory\\Sync\\BackSync\\MergePageToken.cs");
WatermarkMap replicationCursors = SyncConfiguration.GetReplicationCursors(configSession, false, true);
if (replicationCursors.ContainsAllChanges(base.Watermarks))
{
Guid invocationIdByFqdn = session.GetInvocationIdByFqdn(domainControllerFqdn);
long num;
if (base.Watermarks.TryGetValue(invocationIdByFqdn, out num))
{
base.ObjectUpdateSequenceNumber = num + 1L;
base.TombstoneUpdateSequenceNumber = num + 1L;
base.InvocationId = invocationIdByFqdn;
if (base.UseContainerizedUsnChangedIndex)
{
base.SoftDeletedObjectUpdateSequenceNumber = num + 1L;
}
ExTraceGlobals.ActiveDirectoryTracer.TraceDebug((long)base.TenantExternalDirectoryId.GetHashCode(), "DC {0}({1})has all changes reported by the Tenant Full Sync Watermarks for {2} and CAN be used. \r\nFull sync watermarks: \r\n{3}\r\nDC replication cursors: \r\n{4}", new object[]
{
domainControllerFqdn,
base.InvocationId,
base.TenantExternalDirectoryId,
base.Watermarks.SerializeToString(),
replicationCursors.SerializeToString()
});
resultInvocationId = invocationIdByFqdn;
return(true);
}
ExTraceGlobals.ActiveDirectoryTracer.TraceDebug((long)base.TenantExternalDirectoryId.GetHashCode(), "DC {0}({1})has all changes reported by the Tenant Full Sync Watermarks for {2} but cannot be used since its invocationId is not part of the TFS watermarks. \r\nFull sync watermarks: \r\n{3}\r\n", new object[]
{
domainControllerFqdn,
base.InvocationId,
base.TenantExternalDirectoryId,
base.Watermarks.SerializeToString()
});
}
else
{
ExTraceGlobals.ActiveDirectoryTracer.TraceDebug((long)base.TenantExternalDirectoryId.GetHashCode(), "DC {0} does not have all changes reported by the Tenant Full Sync Watermarks for {1} and cannot be used. \r\nFull sync watermarks: \r\n{2}\r\nDC replication cursors: \r\n{3}", new object[]
{
domainControllerFqdn,
base.TenantExternalDirectoryId,
base.Watermarks.SerializeToString(),
replicationCursors.SerializeToString()
});
}
return(false);
}
private bool IsMergeNeeded(PartitionId partitionId)
{
ADReplicationCursorCollection cursors = this.dirSyncCookie.Cursors;
ExTraceGlobals.MergeTracer.TraceDebug <ADReplicationCursorCollection>((long)base.TenantExternalDirectoryId.GetHashCode(), "MergePageToken.IsMergeNeeded original cursors from dirsync cookie = {0}", cursors);
WatermarkMap watermarkMap = this.FilterOutNotExistingDCs(cursors, partitionId);
ExTraceGlobals.MergeTracer.TraceDebug <string>((long)base.TenantExternalDirectoryId.GetHashCode(), "MergePageToken.IsMergeNeeded cursors from dirsync cookie filtered only for live DCs = {0}", watermarkMap.SerializeToString());
ExTraceGlobals.MergeTracer.TraceDebug <string>((long)base.TenantExternalDirectoryId.GetHashCode(), "MergePageToken.IsMergeNeeded watermarks from token = {0}", base.Watermarks.SerializeToString());
bool flag = watermarkMap.Any((KeyValuePair <Guid, long> dcw) => !base.Watermarks.ContainsKey(dcw.Key) || base.Watermarks[dcw.Key] < dcw.Value);
ExTraceGlobals.MergeTracer.TraceDebug <bool>((long)base.TenantExternalDirectoryId.GetHashCode(), "MergePageToken.IsMergeNeeded isMergeNeeded = {0}", flag);
return(flag);
}