Exemple #1
0
/*
 * CopyIntoStream
 *
 * COPY events to a stream from an input source
 */
void
CopyIntoStream(Relation rel, TupleDesc desc, HeapTuple *tuples, int ntuples)
{
	bool snap = ActiveSnapshotSet();
	ResultRelInfo rinfo;
	StreamInsertState *sis;

	MemSet(&rinfo, 0, sizeof(ResultRelInfo));
	rinfo.ri_RangeTableIndex = 1; /* dummy */
	rinfo.ri_TrigDesc = NULL;
	rinfo.ri_RelationDesc = rel;

	if (snap)
		PopActiveSnapshot();

	BeginStreamModify(NULL, &rinfo, list_make1(desc), 0, 0);
	sis = (StreamInsertState *) rinfo.ri_FdwState;
	Assert(sis);

	if (sis->queries)
	{
		TupleTableSlot *slot = MakeSingleTupleTableSlot(RelationGetDescr(rel));
		int i;

		for (i = 0; i < ntuples; i++)
		{
			ExecStoreTuple(tuples[i], slot, InvalidBuffer, false);
			ExecStreamInsert(NULL, &rinfo, slot, NULL);
			ExecClearTuple(slot);
		}

		ExecDropSingleTupleTableSlot(slot);

		Assert(sis->ntups == ntuples);
		pgstat_increment_cq_write(ntuples, sis->nbytes);
	}

	EndStreamModify(NULL, &rinfo);

	if (snap)
		PushActiveSnapshot(GetTransactionSnapshot());
}
Exemple #2
0
static void
pipeline_stream_insert_batch(TransformState *t)
{
	int i;

	if (t->ntups == 0)
		return;

	Assert(t->tg_rel);

	for (i = 0; i < t->cont_query->tgnargs; i++)
	{
		RangeVar *rv = makeRangeVarFromNameList(stringToQualifiedNameList(t->cont_query->tgargs[i]));
		Relation rel = heap_openrv(rv, AccessShareLock);
		Size size;

		if (t->acks)
		{
			int i;

			for (i = 0; i < t->nacks; i++)
			{
				InsertBatchAck *ack = &t->acks[i];
				InsertBatchIncrementNumWTuples(ack->batch, t->ntups);
			}
		}

		size = SendTuplesToContWorkers(rel, RelationGetDescr(t->tg_rel), t->tups, t->ntups, t->acks, t->nacks);

		heap_close(rel, NoLock);

		if (size)
		{
			pgstat_increment_cq_write(t->ntups, size);
			pgstat_report_streamstat(false);
		}
	}

	if (t->acks)
	{
		pfree(t->acks);
		t->acks = NULL;
		t->nacks = 0;
	}

	if (t->ntups)
	{
		for (i = 0; i < t->ntups; i++)
			heap_freetuple(t->tups[i]);

		pfree(t->tups);
		t->tups = NULL;
		t->ntups = 0;
		t->nmaxtups = 0;
	}
	else
	{
		Assert(t->tups == NULL);
		Assert(t->nmaxtups == 0);
	}
}