public void Execute()
{
if (listener != null)
{
listener.OnConfigurationChanged(eventArgs);
}
}
public void OnConfigurationChanged(ConfigChangeEventArgs arguments)
{
ChangeType type = ChangeType.None;
if (arguments != null)
{
string clusterName = arguments.GetParamValue <string>(EventParamName.ClusterName);
if (clusterName != null && !clusterName.Equals(context.ClusterName))
{
return;
}
type = arguments.GetParamValue <ChangeType>(EventParamName.ConfigurationChangeType);
switch (type)
{
case ChangeType.DistributionStrategyConfigured:
case ChangeType.DatabaseCreated:
case ChangeType.DatabaseDropped:
case ChangeType.CollectionCreated:
case ChangeType.CollectionMoved:
case ChangeType.CollectionDropped:
case ChangeType.ConfigRestored:
case ChangeType.ResyncDatabase:
case ChangeType.IntraShardStateTrxferCompleted:
if (this.configChangeListener != null)
{
configChangeListener.OnConfigurationChanged(arguments);
}
break;
case ChangeType.ConfigurationUpdated:
break;
case ChangeType.ShardAdded:
{
ShardInfo newShard = null;
if (context.ConfigurationSession != null)
{
ClusterInfo latestInfo = context.ConfigurationSession.GetDatabaseClusterInfo(arguments.GetParamValue <string>(EventParamName.ClusterName));
newShard = latestInfo.GetShardInfo(arguments.GetParamValue <string>(EventParamName.ShardName));
}
OnShardAdded(newShard);
if (this._clusterListener != null)
{
_clusterListener.OnShardAdd(newShard);
}
}
break;
case ChangeType.ShardRemovedForceful:
if (this._clusterListener != null)
{
ShardInfo removedShard = new ShardInfo()
{
Name = arguments.GetParamValue <string>(EventParamName.ShardName)
};
_clusterListener.OnShardRemove(removedShard, false);
}
break;
case ChangeType.ShardRemovedGraceful:
if (this._clusterListener != null)
{
ShardInfo removedShard = new ShardInfo()
{
Name = arguments.GetParamValue <string>(EventParamName.ShardName)
};
_clusterListener.OnShardRemove(removedShard, true);
}
break;
case ChangeType.DistributionChanged:
if (this._clusterListener != null)
{
_clusterListener.OnDistributionChanged();
}
break;
//write code for check if the primary has been changed for remote shard(s) connect with the new one
case ChangeType.MembershipChanged:
case ChangeType.PrimarySelected:
case ChangeType.NodeJoined:
// AR: This should be removing the node from the restoration manager of the local shard.
//if (arguments.ConfigurationChangeType == ChangeType.PrimarySelected || arguments.ConfigurationChangeType == ChangeType.PrimaryGone)
//{
// ControlConfigurationChangeTask(arguments);
if (arguments.GetParamValue <ChangeType>(EventParamName.ConfigurationChangeType) == ChangeType.MembershipChanged)
{
HandlePrimaryChangeForRemoteshard(arguments);
}
//}
//if (arguments.ConfigurationChangeType.Equals(ChangeType.PrimarySelected) && arguments.Membership.Primary != null || (arguments.ConfigurationChangeType.Equals(ChangeType.PrimaryGone) && arguments.Membership.Primary == null))
//{
//HandleMembershipChangeForRemoteShard();
//}
//OnMembershipChanged(arguments);
//HandlePrimaryChangeForRemoteshard(arguments);
//HandleMembershipChanged();
break;
case ChangeType.NodeAdded:
case ChangeType.NodeRemoved:
case ChangeType.PriorityChanged:
case ChangeType.NodeLeft:
case ChangeType.PrimaryGone:
if (_localShard != null)
{
((LocalShard)_localShard).OnConfigurationChanged(arguments);
}
break;
case ChangeType.RangeUpdated:
_clusterListener.OnRangesUpdated();
break;
case ChangeType.NewRangeAdded:
_clusterListener.OnNewRangeAdded();
break;
default:
//write code for check if the primary has been changed for remote shard(s) connect with the new one
break;
}
}
}
