42 lines
761 B
Go
42 lines
761 B
Go
package main
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import (
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"context"
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"database/sql"
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"flag"
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"log"
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"os"
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"time"
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"pg/src/with"
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)
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func main() {
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if err := with.Context(run); err != nil {
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panic(err)
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}
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}
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func run(ctx context.Context) error {
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fs := flag.NewFlagSet(os.Args[0], flag.ContinueOnError)
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c := fs.String("c", "sqlite://", "conn string")
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if err := fs.Parse(os.Args[1:]); err != nil {
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panic(err)
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}
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return with.SQL(ctx, *c, func(db *sql.DB) error {
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with.Every(ctx, 5*time.Second, func() {
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row := db.QueryRowContext(ctx, `SELECT 1`)
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var n int
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if err := row.Err(); err != nil {
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log.Println("query err:", err)
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} else if err := row.Scan(&n); err != nil {
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log.Println("scan err:", err)
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} else {
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log.Println("ping...")
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}
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})
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return ctx.Err()
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})
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}
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