public static void Main()
{
/* Enable debug messages. */
//Debug.Listeners.Add(new TextWriterTraceListener(System.Console.Out));
String taskName = "org.gridgain.examples.task.CharCountTask";
String taskArg = "Hello Dot Net World";
IGridClient client = CreateClient();
try
{
// Show grid topology.
X.WriteLine(">>> Client created, current grid topology: " + ToString(client.Compute().Nodes()));
IGridClientCompute prj = client.Compute();
// Execute test task that will count total number of nodes in grid.
int wordCnt = prj.Execute <int>(taskName, taskArg);
X.WriteLine(">>> Task result [args='" + taskArg + "', wordCnt=" + wordCnt + ']');
}
catch (GridClientException e)
{
Console.WriteLine("Unexpected grid client exception happens: {0}", e);
}
finally
{
GridClientFactory.StopAll();
}
}
public static void Main()
{
/* Enable debug messages. */
//Debug.Listeners.Add(new TextWriterTraceListener(System.Console.Out));
String taskName = "org.gridgain.examples.misc.client.api.ClientExampleTask";
String taskArg = ".NET client - ";
IGridClient client = CreateClient();
try {
// Show grid topology.
X.WriteLine(">>> Client created, current grid topology: " + ToString(client.Compute().Nodes()));
// Random node ID.
Guid randNodeId = client.Compute().Nodes()[0].Id;
// Note that in this example we get a fixed projection for task call because we cannot guarantee that
// other nodes contain ClientExampleTask in classpath.
IGridClientCompute prj = client.Compute().Projection(delegate(IGridClientNode node) {
return(node.Id.Equals(randNodeId));
});
// Execute test task that will count total number of nodes in grid.
int entryCnt = prj.Execute <int>(taskName, taskArg + "predicate projection");
X.WriteLine(">>> Predicate projection : there are totally " + entryCnt + " nodes in the grid");
// Same as above, using different projection API.
IGridClientNode clntNode = prj.Node(randNodeId);
prj = prj.Projection(clntNode);
entryCnt = prj.Execute <int>(taskName, taskArg + "node projection");
X.WriteLine(">>> GridClientNode projection : there are totally " + entryCnt + " nodes in the grid");
// Use of collections is also possible.
prj = prj.Projection(new IGridClientNode[] { clntNode });
entryCnt = prj.Execute <int>(taskName, taskArg + "nodes collection projection");
X.WriteLine(">>> Collection projection : there are totally " + entryCnt + " nodes in the grid");
// Balancing - may be random or round-robin. Users can create
// custom load balancers as well.
IGridClientLoadBalancer balancer = new GridClientRandomBalancer();
// Balancer may be added to predicate or collection examples.
prj = client.Compute().Projection(delegate(IGridClientNode node) {
return(node.Id.Equals(randNodeId));
}, balancer);
entryCnt = prj.Execute <int>(taskName, taskArg + "predicate projection with balancer");
X.WriteLine(">>> Predicate projection with balancer : there are totally " + entryCnt +
" nodes in the grid");
// Now let's try round-robin load balancer.
balancer = new GridClientRoundRobinBalancer();
prj = prj.Projection(new IGridClientNode[] { clntNode }, balancer);
entryCnt = prj.Execute <int>(taskName, taskArg + "node projection with balancer");
X.WriteLine(">>> GridClientNode projection : there are totally " + entryCnt + " nodes in the grid");
// Execution may be asynchronous.
IGridClientFuture <int> fut = prj.ExecuteAsync <int>(taskName, taskArg + "asynchronous execution");
X.WriteLine(">>> Execute async : there are totally " + fut.Result + " nodes in the grid");
// GridClientCompute can be queried for nodes participating in it.
ICollection <IGridClientNode> c = prj.Nodes(new Guid[] { randNodeId });
X.WriteLine(">>> Nodes with Guid " + randNodeId + " : " + ToString(c));
// Nodes may also be filtered with predicate. Here
// we create projection which only contains local node.
c = prj.Nodes(delegate(IGridClientNode node) {
return(node.Id.Equals(randNodeId));
});
X.WriteLine(">>> Nodes filtered with predicate : " + ToString(c));
// Information about nodes may be refreshed explicitly.
clntNode = prj.RefreshNode(randNodeId, true, true);
X.WriteLine(">>> Refreshed node : " + clntNode);
// As usual, there's also an asynchronous version.
IGridClientFuture <IGridClientNode> futClntNode = prj.RefreshNodeAsync(randNodeId, false, false);
X.WriteLine(">>> Refreshed node asynchronously : " + futClntNode.Result);
// Nodes may also be refreshed by IP address.
String clntAddr = "127.0.0.1";
foreach (var addr in clntNode.AvailableAddresses(GridClientProtocol.Tcp))
{
if (addr != null)
{
clntAddr = addr.Address.ToString();
}
}
// Force node metrics refresh (by default it happens periodically in the background).
clntNode = prj.RefreshNode(clntAddr, true, true);
X.WriteLine(">>> Refreshed node by IP : " + clntNode);
// Asynchronous version.
futClntNode = prj.RefreshNodeAsync(clntAddr, false, false);
X.WriteLine(">>> Refreshed node by IP asynchronously : " + futClntNode.Result);
// Topology as a whole may be refreshed, too.
ICollection <IGridClientNode> top = prj.RefreshTopology(true, true);
X.WriteLine(">>> Refreshed topology : " + ToString(top));
// Asynchronous version.
IGridClientFuture <IList <IGridClientNode> > topFut = prj.RefreshTopologyAsync(false, false);
X.WriteLine(">>> Refreshed topology asynchronously : " + ToString(topFut.Result));
}
catch (GridClientException e) {
Console.WriteLine("Unexpected grid client exception happens: {0}", e);
}
finally {
GridClientFactory.StopAll();
}
}