everytab/pipeline/05_bundle_gen/db.go

41 lines
971 B
Go

package main
import (
"context"
"github.com/jackc/pgx/v5/pgxpool"
)
type HostRow struct {
ID int64
Hostname string
Protocol string
HtmlTitle string
IframeAllowed bool
BestIconHash string
}
// fetchHostsPage gets a page of hosts with titles, ordered by id for disk locality.
func fetchHostsPage(ctx context.Context, pool *pgxpool.Pool, lastID int64, limit int) ([]HostRow, error) {
rows, err := pool.Query(ctx, `
SELECT id, hostname, protocol, html_title, COALESCE(iframe_allowed, true), COALESCE(best_icon_hash, '')
FROM hosts
WHERE html_title IS NOT NULL AND id > $1
ORDER BY id
LIMIT $2
`, lastID, limit)
if err != nil {
return nil, err
}
defer rows.Close()
var hosts []HostRow
for rows.Next() {
var h HostRow
if err := rows.Scan(&h.ID, &h.Hostname, &h.Protocol, &h.HtmlTitle, &h.IframeAllowed, &h.BestIconHash); err != nil {
return nil, err
}
hosts = append(hosts, h)
}
return hosts, rows.Err()
}