From 350bb868b37c159525cdd6971758a9d8131da5f2 Mon Sep 17 00:00:00 2001
From: Kaushik Iska <iska.kaushik@gmail.com>
Date: Sun, 10 Dec 2023 13:53:34 -0500
Subject: [PATCH] fix value

---
 flow/connectors/postgres/client.go | 40 +++++++++++++++++++-----------
 1 file changed, 25 insertions(+), 15 deletions(-)

diff --git a/flow/connectors/postgres/client.go b/flow/connectors/postgres/client.go
index 92a1b181c9..ba7e53a8dc 100644
--- a/flow/connectors/postgres/client.go
+++ b/flow/connectors/postgres/client.go
@@ -12,6 +12,7 @@ import (
 	"github.com/PeerDB-io/peer-flow/model"
 	"github.com/jackc/pglogrepl"
 	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgtype"
 	log "github.com/sirupsen/logrus"
 	"golang.org/x/exp/maps"
 )
@@ -205,33 +206,42 @@ func (c *PostgresConnector) GetSlotInfo(slotName string) ([]*protos.SlotInfo, er
 	if slotName != "" {
 		specificSlotClause = fmt.Sprintf(" WHERE slot_name = '%s'", slotName)
 	}
-	rows, err := c.pool.Query(c.ctx, "SELECT slot_name, redo_lsn::Text,restart_lsn::text,confirmed_flush_lsn::text,active,"+
-		"round((pg_current_wal_lsn() - confirmed_flush_lsn) / 1024 / 1024) AS MB_Behind"+
-		" FROM pg_control_checkpoint(), pg_replication_slots"+specificSlotClause+";")
+	rows, err := c.pool.Query(c.ctx, `
+    SELECT
+        slot_name,
+        redo_lsn::text,
+        restart_lsn::text,
+        confirmed_flush_lsn::text,
+        active,
+        round((pg_current_wal_lsn() - confirmed_flush_lsn) / 1024 / 1024) AS MB_Behind
+    FROM
+        pg_control_checkpoint(),
+        pg_replication_slots`+specificSlotClause+`;`)
+
 	if err != nil {
 		return nil, err
 	}
 	defer rows.Close()
 	var slotInfoRows []*protos.SlotInfo
 	for rows.Next() {
-		var redoLSN string
-		var slotName string
-		var restartLSN string
-		var confirmedFlushLSN string
-		var active bool
-		var lagInMB float32
+		var redoLSN pgtype.Text
+		var slotName pgtype.Text
+		var restartLSN pgtype.Text
+		var confirmedFlushLSN pgtype.Text
+		var active pgtype.Bool
+		var lagInMB pgtype.Float4
 		err := rows.Scan(&slotName, &redoLSN, &restartLSN, &confirmedFlushLSN, &active, &lagInMB)
 		if err != nil {
 			return nil, err
 		}
 
 		slotInfoRows = append(slotInfoRows, &protos.SlotInfo{
-			RedoLSN:           redoLSN,
-			RestartLSN:        restartLSN,
-			ConfirmedFlushLSN: confirmedFlushLSN,
-			SlotName:          slotName,
-			Active:            active,
-			LagInMb:           lagInMB,
+			RedoLSN:           redoLSN.String,
+			RestartLSN:        restartLSN.String,
+			ConfirmedFlushLSN: confirmedFlushLSN.String,
+			SlotName:          slotName.String,
+			Active:            active.Bool,
+			LagInMb:           lagInMB.Float32,
 		})
 	}
 	return slotInfoRows, nil