Source of handler_bgwriter.go - PostgreSQL

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** See the License for the specific language governing permissions and
** limitations under the License.
**/
​
package plugin
​
import (
    "context"
    "errors"
​
    "git.zabbix.com/ap/plugin-support/zbxerr"
    "github.com/jackc/pgx/v4"
    "golang.zabbix.com/sdk/zbxerr"
)
​
// bgwriterHandler executes select  with statistics from pg_stat_bgwriter
// and returns JSON if all is OK or nil otherwise.
func bgwriterHandler(ctx context.Context, conn PostgresClient,
    _ string, _ map[string]string, _ ...string) (interface{}, error) {
    var bgwriterJSON string
​
    query := `
  SELECT row_to_json (T)