/*
* Function: SendTuple - Sends a portion or whole tuple to the AMS layer.
*/
SendReturnCode
SendTuple(MotionLayerState *mlStates,
ChunkTransportState *transportStates,
int16 motNodeID,
HeapTuple tuple,
int16 targetRoute)
{
MotionNodeEntry *pMNEntry;
TupleChunkListData tcList;
MemoryContext oldCtxt;
SendReturnCode rc;
AssertArg(tuple != NULL);
/*
* Analyze tools. Do not send any thing if this slice is in the bit mask
*/
if (gp_motion_slice_noop != 0 && (gp_motion_slice_noop & (1 << currentSliceId)) != 0)
return SEND_COMPLETE;
/*
* Pull up the motion node entry with the node's details. This includes
* details that affect sending, such as whether the motion node needs to
* include backup segment-dbs.
*/
pMNEntry = getMotionNodeEntry(mlStates, motNodeID, "SendTuple");
#ifdef AMS_VERBOSE_LOGGING
elog(DEBUG5, "Serializing HeapTuple for sending.");
#endif
if (targetRoute != BROADCAST_SEGIDX)
{
struct directTransportBuffer b;
getTransportDirectBuffer(transportStates, motNodeID, targetRoute, &b);
if (b.pri != NULL && b.prilen > TUPLE_CHUNK_HEADER_SIZE)
{
int sent = 0;
sent = SerializeTupleDirect(tuple, &pMNEntry->ser_tup_info, &b);
if (sent > 0)
{
putTransportDirectBuffer(transportStates, motNodeID, targetRoute, sent);
/* fill-in tcList fields to update stats */
tcList.num_chunks = 1;
tcList.serialized_data_length = sent;
/* update stats */
statSendTuple(mlStates, pMNEntry, &tcList);
return SEND_COMPLETE;
}
}
/* Otherwise fall-through */
}
/* Create and store the serialized form, and some stats about it. */
oldCtxt = MemoryContextSwitchTo(mlStates->motion_layer_mctx);
SerializeTupleIntoChunks(tuple, &pMNEntry->ser_tup_info, &tcList);
MemoryContextSwitchTo(oldCtxt);
#ifdef AMS_VERBOSE_LOGGING
elog(DEBUG5, "Serialized HeapTuple for sending:\n"
"\ttarget-route %d \n"
"\t%d bytes in serial form\n"
"\tbroken into %d chunks",
targetRoute,
tcList.serialized_data_length,
tcList.num_chunks);
#endif
/* do the send. */
if (!SendTupleChunkToAMS(mlStates, transportStates, motNodeID, targetRoute, tcList.p_first))
{
pMNEntry->stopped = true;
rc = STOP_SENDING;
}
else
{
/* update stats */
statSendTuple(mlStates, pMNEntry, &tcList);
rc = SEND_COMPLETE;
}
/* cleanup */
clearTCList(&pMNEntry->ser_tup_info.chunkCache, &tcList);
return rc;
}
void
CheckAndSendRecordCache(MotionLayerState *mlStates,
ChunkTransportState *transportStates,
int16 motNodeID,
int16 targetRoute)
{
MotionNodeEntry *pMNEntry;
TupleChunkListData tcList;
MemoryContext oldCtxt;
ChunkTransportStateEntry *pEntry = NULL;
MotionConn *conn;
getChunkTransportState(transportStates, motNodeID, &pEntry);
/*
* for broadcast we only mark sent_record_typmod for connection 0 for
* efficiency and convenience
*/
if (targetRoute == BROADCAST_SEGIDX)
conn = &pEntry->conns[0];
else
conn = &pEntry->conns[targetRoute];
/*
* Analyze tools. Do not send any thing if this slice is in the bit mask
*/
if (gp_motion_slice_noop != 0 && (gp_motion_slice_noop & (1 << currentSliceId)) != 0)
return;
/*
* Pull up the motion node entry with the node's details. This includes
* details that affect sending, such as whether the motion node needs to
* include backup segment-dbs.
*/
pMNEntry = getMotionNodeEntry(mlStates, motNodeID, "SendRecordCache");
if (!ShouldSendRecordCache(conn, &pMNEntry->ser_tup_info))
return;
#ifdef AMS_VERBOSE_LOGGING
elog(DEBUG5, "Serializing RecordCache for sending.");
#endif
/* Create and store the serialized form, and some stats about it. */
oldCtxt = MemoryContextSwitchTo(mlStates->motion_layer_mctx);
SerializeRecordCacheIntoChunks(&pMNEntry->ser_tup_info, &tcList, conn);
MemoryContextSwitchTo(oldCtxt);
#ifdef AMS_VERBOSE_LOGGING
elog(DEBUG5, "Serialized RecordCache for sending:\n"
"\ttarget-route %d \n"
"\t%d bytes in serial form\n"
"\tbroken into %d chunks",
targetRoute,
tcList.serialized_data_length,
tcList.num_chunks);
#endif
/* do the send. */
if (!SendTupleChunkToAMS(mlStates, transportStates, motNodeID, targetRoute, tcList.p_first))
{
pMNEntry->stopped = true;
}
else
{
/* update stats */
statSendTuple(mlStates, pMNEntry, &tcList);
}
/* cleanup */
clearTCList(&pMNEntry->ser_tup_info.chunkCache, &tcList);
UpdateSentRecordCache(conn);
}
