internal static void DeleteFailoverRelationship(DhcpServerFailoverRelationship relationship)
{
// refresh relationship instance
relationship = (DhcpServerFailoverRelationship)relationship.Server.FailoverRelationships.GetRelationship(relationship.Name);
if (relationship.scopeAddresses.Count > 0)
{
throw new InvalidOperationException("This failover relationship contains configured scopes. Deconfigure the scopes before deleting the relationship.");
}
var result = Api.DhcpV4FailoverDeleteRelationship(relationship.Server.Address, relationship.Name);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException(nameof(Api.DhcpV4FailoverDeleteScopeFromRelationship), result, "Failed to delete relationship");
}
var partnerServer = relationship.ConnectToPartner();
result = Api.DhcpV4FailoverDeleteRelationship(partnerServer.Address, relationship.Name);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException(nameof(Api.DhcpV4FailoverDeleteScopeFromRelationship), result, "Failed to delete relationship on partner server");
}
}
internal static void ReplicateScopeRelationship(DhcpServerFailoverRelationship relationship, DhcpServerScope sourceScope)
{
var partner = relationship.ConnectToPartner();
var destinationScope = partner.Scopes.GetScope(sourceScope.Address);
sourceScope.ReplicateTo((DhcpServerScope)destinationScope);
}
private static void ReplicateRelationship(DhcpServerFailoverRelationship relationship)
{
var scopes = relationship.Scopes.ToList();
var partner = relationship.ConnectToPartner();
foreach (var sourceScope in scopes)
{
var destinationScope = partner.Scopes.GetScope(sourceScope.Address);
((DhcpServerScope)sourceScope).ReplicateTo((DhcpServerScope)destinationScope);
}
}
internal static void AddScopeToFailoverRelationship(DhcpServerFailoverRelationship relationship, DhcpServerScope scope)
{
var partnerServer = (DhcpServer)relationship.ConnectToPartner();
// create/replicate
var partnerScope = CreateOrReplicatePartnerScope(partnerServer, scope);
// determine relationship primary/secondary servers
DhcpServer primaryServer;
DhcpServer secondaryServer;
if (relationship.ServerType == DhcpServerFailoverServerType.PrimaryServer)
{
primaryServer = relationship.Server;
secondaryServer = partnerServer;
}
else
{
primaryServer = partnerServer;
secondaryServer = relationship.Server;
}
using (var relationshipNative = new DHCP_FAILOVER_RELATIONSHIP_Managed(relationshipName: relationship.Name,
scopes: new DHCP_IP_ARRAY_Managed(scope.Address.ToNativeAsNetwork())))
{
// update relationship on primary server
var result = Api.DhcpV4FailoverAddScopeToRelationship(primaryServer.Address, in relationshipNative);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException(nameof(Api.DhcpV4FailoverAddScopeToRelationship), result, "Failed to add scope to failover relationship on primary server");
}
// update relationship on secondary server
result = Api.DhcpV4FailoverAddScopeToRelationship(secondaryServer.Address, in relationshipNative);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException(nameof(Api.DhcpV4FailoverAddScopeToRelationship), result, "Failed to add scope to failover relationship on secondary server");
}
}
// update local cache
relationship.scopeAddresses.Add(scope.Address);
// activate scope on partner (if the scope is active on primary)
if (scope.State == DhcpServerScopeState.Enabled || scope.State == DhcpServerScopeState.EnabledSwitched)
{
partnerScope = (DhcpServerScope)partnerServer.Scopes.GetScope(partnerScope.Address);
partnerScope.Activate();
}
}