73 lines
1.4 KiB
Go
73 lines
1.4 KiB
Go
package sql
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"errors"
|
|
|
|
"code.icb4dc0.de/prskr/nurse/check"
|
|
"code.icb4dc0.de/prskr/nurse/config"
|
|
"code.icb4dc0.de/prskr/nurse/grammar"
|
|
"code.icb4dc0.de/prskr/nurse/validation"
|
|
)
|
|
|
|
var _ check.SystemChecker = (*SelectCheck)(nil)
|
|
|
|
type SelectCheck struct {
|
|
*sql.DB
|
|
validators validation.Validator[*sql.Rows]
|
|
Query string
|
|
}
|
|
|
|
func (s *SelectCheck) UnmarshalCheck(c grammar.Check, lookup config.ServerLookup) error {
|
|
const serverAndKeyArgsNumber = 2
|
|
inst := c.Initiator
|
|
if err := grammar.ValidateParameterCount(inst.Params, serverAndKeyArgsNumber); err != nil {
|
|
return err
|
|
}
|
|
|
|
var err error
|
|
if s.DB, err = dbFromParam(inst.Params[0], lookup); err != nil {
|
|
return err
|
|
}
|
|
|
|
if s.Query, err = inst.Params[1].AsString(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if s.validators, err = registry.ValidatorsForFilters(c.Validators); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (s *SelectCheck) Execute(ctx check.Context) error {
|
|
for {
|
|
select {
|
|
case <-ctx.Done():
|
|
return ctx.Err()
|
|
default:
|
|
attemptCtx, cancel := ctx.AttemptContext()
|
|
err := s.executeAttempt(attemptCtx)
|
|
cancel()
|
|
if err == nil {
|
|
return nil
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s *SelectCheck) executeAttempt(ctx context.Context) (err error) {
|
|
var rows *sql.Rows
|
|
rows, err = s.QueryContext(ctx, s.Query)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
defer func() {
|
|
err = errors.Join(rows.Close(), rows.Err())
|
|
}()
|
|
|
|
return s.validators.Validate(rows)
|
|
}
|