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resultwriter.go
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/
resultwriter.go
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package postgres
import (
"context"
"database/sql"
"encoding/json"
"errors"
"github.com/gosom/scrapemate"
"github.com/gosom/google-maps-scraper/gmaps"
)
func NewResultWriter(db *sql.DB) scrapemate.ResultWriter {
return &resultWriter{db: db}
}
type resultWriter struct {
db *sql.DB
}
func (r *resultWriter) Run(ctx context.Context, in <-chan scrapemate.Result) error {
for result := range in {
entry, ok := result.Data.(*gmaps.Entry)
if !ok {
return errors.New("invalid data type")
}
if err := r.saveEntry(ctx, entry); err != nil {
return err
}
}
return nil
}
func (r *resultWriter) saveEntry(ctx context.Context, entry *gmaps.Entry) error {
q := `INSERT INTO results
(data)
VALUES
($1) ON CONFLICT DO NOTHING
`
data, err := json.Marshal(entry)
if err != nil {
return err
}
_, err = r.db.ExecContext(ctx, q, data)
return err
}