/// <summary>
/// Attempts to create a node on the specified machine using the specified provider.
/// </summary>
/// <param name="nodeProvider">The provider used to create the node.</param>
/// <param name="nodeConfiguration">The <see cref="NodeConfiguration"/> to use.</param>
/// <param name="numberOfNodesToCreate">Number of nodes to be reused ot created.</param>
/// <returns>List of created nodes.</returns>
private IList <NodeInfo> AttemptCreateNode(INodeProvider nodeProvider, NodeConfiguration nodeConfiguration, int numberOfNodesToCreate)
{
// If no provider was passed in, we obviously can't create a node.
if (nodeProvider == null)
{
ErrorUtilities.ThrowInternalError("No node provider provided.");
return(new List <NodeInfo>());
}
// Are there any free slots on this provider?
if (nodeProvider.AvailableNodes == 0)
{
return(new List <NodeInfo>());
}
// Assign a global ID to the node we are about to create.
int fromNodeId;
if (nodeProvider is NodeProviderInProc)
{
fromNodeId = _inprocNodeId;
}
else
{
// Reserve node numbers for all needed nodes.
fromNodeId = Interlocked.Add(ref _nextNodeId, numberOfNodesToCreate) - numberOfNodesToCreate;
}
// Create the node and add it to our mapping.
IList <NodeInfo> nodes = nodeProvider.CreateNodes(fromNodeId, this, AcquiredNodeConfigurationFactory, numberOfNodesToCreate);
foreach (NodeInfo node in nodes)
{
_nodeIdToProvider.Add(node.NodeId, nodeProvider);
}
return(nodes);
NodeConfiguration AcquiredNodeConfigurationFactory(NodeInfo nodeInfo)
{
var config = nodeConfiguration.Clone();
config.NodeId = nodeInfo.NodeId;
return(config);
}
}