/// <summary>
/// Check stream reallocation.
/// </summary>
/// <param name="mem">Memory.</param>
private void CheckStreamReallocate(IPlatformMemory mem)
{
Assert.IsTrue(mem.Capacity >= 256);
int dataLen = 2048 + 13;
Random rand = new Random();
byte[] data = new byte[dataLen];
for (int i = 0; i < data.Length; i++)
{
data[i] = (byte)rand.Next(0, 255);
}
PlatformMemoryStream stream = mem.Stream();
stream.WriteByteArray(data);
stream.SynchronizeOutput();
Assert.IsTrue(mem.Capacity >= dataLen);
stream.Reset();
stream.SynchronizeInput();
byte[] data0 = stream.ReadByteArray(dataLen);
Assert.AreEqual(data, data0);
}
private long ComputeJobExecute(long memPtr)
{
using (PlatformMemoryStream stream = IgniteManager.Memory.Get(memPtr).GetStream())
{
var job = Job(stream.ReadLong());
var cancel = stream.ReadBool();
stream.Reset();
job.ExecuteRemote(stream, cancel);
}
return(0);
}
private long CacheInvoke(long memPtr)
{
using (PlatformMemoryStream stream = IgniteManager.Memory.Get(memPtr).GetStream())
{
var result = ReadAndRunCacheEntryProcessor(stream, _ignite);
stream.Reset();
result.Write(stream, _ignite.Marshaller);
stream.SynchronizeOutput();
}
return(0);
}
private long CacheStoreInvoke(long memPtr)
{
using (PlatformMemoryStream stream = IgniteManager.Memory.Get(memPtr).GetStream())
{
try
{
var store = _handleRegistry.Get <CacheStore>(stream.ReadLong(), true);
return(store.Invoke(stream, _ignite));
}
catch (Exception e)
{
stream.Reset();
_ignite.Marshaller.StartMarshal(stream).WriteObject(e);
return(-1);
}
}
}
public void Map(PlatformMemoryStream stream)
{
IList <IClusterNode> subgrid;
ClusterGroupImpl prj = (ClusterGroupImpl)_compute.ClusterGroup;
var ignite = (Ignite)prj.Ignite;
// 1. Unmarshal topology info if topology changed.
var reader = prj.Marshaller.StartUnmarshal(stream);
if (reader.ReadBoolean())
{
long topVer = reader.ReadLong();
List <IClusterNode> nodes = new List <IClusterNode>(reader.ReadInt());
int nodesCnt = reader.ReadInt();
subgrid = new List <IClusterNode>(nodesCnt);
for (int i = 0; i < nodesCnt; i++)
{
IClusterNode node = ignite.GetNode(reader.ReadGuid());
nodes.Add(node);
if (reader.ReadBoolean())
{
subgrid.Add(node);
}
}
// Update parent projection to help other task callers avoid this overhead.
// Note that there is a chance that topology changed even further and this update fails.
// It means that some of subgrid nodes could have left the Grid. This is not critical
// for us, because Java will handle it gracefully.
prj.UpdateTopology(topVer, nodes);
}
else
{
IList <IClusterNode> nodes = prj.NodesNoRefresh();
Debug.Assert(nodes != null, "At least one topology update should have occurred.");
subgrid = IgniteUtils.Shuffle(nodes);
}
// 2. Perform map.
IDictionary <IComputeJob <T>, IClusterNode> map;
Exception err;
try
{
map = _task.Map(subgrid, _arg);
err = null;
}
catch (Exception e)
{
map = null;
err = e;
// Java can receive another exception in case of marshalling failure but it is not important.
Finish(default(TR), e);
}
// 3. Write map result to the output stream.
stream.Reset();
BinaryWriter writer = prj.Marshaller.StartMarshal(stream);
try
{
if (err == null)
{
writer.WriteBoolean(true); // Success flag.
if (map == null)
{
writer.WriteBoolean(false); // Map produced no result.
}
else
{
writer.WriteBoolean(true); // Map produced result.
_jobHandles = WriteJobs(writer, map);
}
}
else
{
writer.WriteBoolean(false); // Map failed.
// Write error as string because it is not important for Java, we need only to print
// a message in the log.
writer.WriteString("Map step failed [errType=" + err.GetType().Name +
", errMsg=" + err.Message + ']');
}
}
catch (Exception e)
{
// Something went wrong during marshaling.
Finish(default(TR), e);
stream.Reset();
writer.WriteBoolean(false); // Map failed.
writer.WriteString(e.Message); // Write error message.
}
finally
{
prj.Marshaller.FinishMarshal(writer);
}
}