INFRA-3661 : Filter out errors for duplicate key value pairs (#450)

* INFRA-3661 : Filter out errors for duplicate key value pairs

* INFRA-3661 : PR review changes

* INFRA-3611 : Remove whitespace

common/util/constant.go

@@ -142,3 +142,7 @@ const (
 const (
 	ADD_INCIDENT_USER_MAPPING = "ADD_INCIDENT_USER_MAPPING"
 )
+
+const (
+	DUPLICATE_KEY_VALUE_ERROR_CODE = "23505"
+)

repository/incidentUser/incident_user_repository_impl.go

@@ -1,7 +1,12 @@
 package incidentUser
 
 import (
+	"errors"
+	"fmt"
+	"github.com/jackc/pgx/v5/pgconn"
 	"gorm.io/gorm"
+	"houston/common/util"
+	"houston/logger"
 	"houston/model/incidentUser"
 )
 
@@ -16,10 +21,14 @@ func (repo *incidentUserRepositoryImpl) AddIncidentUser(incidentId uint, userId
 	})
 
 	if result.Error != nil {
-		return result.Error
+		logger.Error(fmt.Sprintf("failed to add incident-user mapping with incidentId %d and userId %d:  %v", incidentId, userId, result.Error))
+		var pgErr *pgconn.PgError
+		if errors.As(result.Error, &pgErr) && pgErr.Code == util.DUPLICATE_KEY_VALUE_ERROR_CODE {
+			return nil
+		}
 	}
 
-	return nil
+	return result.Error
 }
 
 func (repo *incidentUserRepositoryImpl) RemoveIncidentUser(incidentId uint, userId uint) error {