Esempio n. 1
0
func getStreamError(stream sqltypes.ResultStream, err error) error {
	if err != nil {
		return err
	}
	for {
		_, err := stream.Recv()
		switch err {
		case nil:
			// keep going
		case io.EOF:
			return nil
		default:
			return err
		}
	}
}
Esempio n. 2
0
func (stc *ScatterConn) processOneStreamingResult(mu *sync.Mutex, stream sqltypes.ResultStream, err error, replyErr *error, fieldSent *bool, sendReply func(reply *sqltypes.Result) error) error {
	if err != nil {
		return err
	}
	for {
		qr, err := stream.Recv()
		if err != nil {
			if err == io.EOF {
				return nil
			}
			return err
		}

		mu.Lock()
		if *replyErr != nil {
			mu.Unlock()
			// we had an error sending results, drain input
			for {
				if _, err := stream.Recv(); err != nil {
					break
				}
			}
			return nil
		}

		// only send field info once for scattered streaming
		if len(qr.Fields) > 0 && len(qr.Rows) == 0 {
			if *fieldSent {
				mu.Unlock()
				continue
			}
			*fieldSent = true
		}
		*replyErr = sendReply(qr)
		mu.Unlock()
	}
}
Esempio n. 3
0
func testEchoStreamExecute(t *testing.T, conn *vtgateconn.VTGateConn) {
	var stream sqltypes.ResultStream
	var err error
	var qr *sqltypes.Result

	ctx := callerid.NewContext(context.Background(), callerID, nil)

	stream, err = conn.StreamExecute(ctx, echoPrefix+query, bindVars, tabletType)
	if err != nil {
		t.Fatal(err)
	}
	qr, err = stream.Recv()
	checkEcho(t, "StreamExecute", qr, err, map[string]string{
		"callerId":   callerIDEcho,
		"query":      echoPrefix + query,
		"bindVars":   bindVarsEcho,
		"tabletType": tabletTypeEcho,
	})

	stream, err = conn.StreamExecuteShards(ctx, echoPrefix+query, keyspace, shards, bindVars, tabletType)
	if err != nil {
		t.Fatal(err)
	}
	qr, err = stream.Recv()
	checkEcho(t, "StreamExecuteShards", qr, err, map[string]string{
		"callerId":   callerIDEcho,
		"query":      echoPrefix + query,
		"keyspace":   keyspace,
		"shards":     shardsEcho,
		"bindVars":   bindVarsEcho,
		"tabletType": tabletTypeEcho,
	})

	stream, err = conn.StreamExecuteKeyspaceIds(ctx, echoPrefix+query, keyspace, keyspaceIDs, bindVars, tabletType)
	if err != nil {
		t.Fatal(err)
	}
	qr, err = stream.Recv()
	checkEcho(t, "StreamExecuteKeyspaceIds", qr, err, map[string]string{
		"callerId":    callerIDEcho,
		"query":       echoPrefix + query,
		"keyspace":    keyspace,
		"keyspaceIds": keyspaceIDsEcho,
		"bindVars":    bindVarsEcho,
		"tabletType":  tabletTypeEcho,
	})

	stream, err = conn.StreamExecuteKeyRanges(ctx, echoPrefix+query, keyspace, keyRanges, bindVars, tabletType)
	if err != nil {
		t.Fatal(err)
	}
	qr, err = stream.Recv()
	checkEcho(t, "StreamExecuteKeyRanges", qr, err, map[string]string{
		"callerId":   callerIDEcho,
		"query":      echoPrefix + query,
		"keyspace":   keyspace,
		"keyRanges":  keyRangesEcho,
		"bindVars":   bindVarsEcho,
		"tabletType": tabletTypeEcho,
	})
}