func (s *server) doSearch(ctx context.Context, backend *Backend, q *client.Query) (*api.ReplySearch, error) {
var cl client.Client
var search client.Search
var err error
select {
case cl = <-backend.Clients:
case <-ctx.Done():
return nil, ErrTimedOut
}
defer backend.CheckIn(cl)
search, err = cl.Query(q)
if err != nil {
log.Printf(ctx, "error talking to backend err=%s", err)
return nil, err
}
reply := &api.ReplySearch{Results: make([]*client.Result, 0)}
for r := range search.Results() {
reply.Results = append(reply.Results, r)
}
reply.Info, err = search.Close()
if err != nil {
return nil, err
}
return reply, nil
}
func (bk *Backend) CheckIn(c client.Client) {
if c.Err() != nil {
c.Close()
bk.pending <- struct{}{}
return
}
bk.Clients <- c
}