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Exportall as chunked export to avoid mem-exhaust

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int2001
2025-12-05 05:52:59 +00:00
parent 28a0e1d95b
commit ab13ea1af0
2 changed files with 79 additions and 4 deletions
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41
application/controllers/Adif.php
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@@ -85,17 +85,50 @@ class adif extends CI_Controller {
}
// Export all QSO Data in ASC Order of Date.
// Export all QSO Data in ASC Order of Date - use chunks to avoid memory exhaustion
public function exportall() {
// Set memory limit to unlimited to allow heavy usage
$this->require_tab_access('export');
ini_set('memory_limit', '-1');
set_time_limit(300);
$this->load->model('adif_data');
$this->load->library('AdifHelper');
$data['qsos'] = $this->adif_data->export_all(null, $this->input->post('from', true), $this->input->post('to', true));
$from = $this->input->post('from', true);
$to = $this->input->post('to', true);
$this->load->view('adif/data/exportall', $data);
$filename = $this->session->userdata('user_callsign').'-'.date('Ymd-Hi').'.adi';
header('Content-Type: text/plain; charset=utf-8');
header('Content-Disposition: attachment; filename="'.$filename.'"');
// Output ADIF header // No chance to use exportall-view any longer, because of chunking logic
echo "Wavelog ADIF export\n";
echo "<ADIF_VER:5>3.1.6\n";
echo "<PROGRAMID:".strlen($this->config->item('app_name')).">".$this->config->item('app_name')."\r\n";
echo "<PROGRAMVERSION:".strlen($this->optionslib->get_option('version')).">".$this->optionslib->get_option('version')."\r\n";
echo "<EOH>\n\n";
// Stream QSOs in 5K chunks
$offset = 0;
$chunk_size = 5000;
do {
$qsos = $this->adif_data->export_all_chunked(null, $from, $to, false, null, $offset, $chunk_size);
if ($qsos->num_rows() > 0) {
foreach ($qsos->result() as $qso) {
echo $this->adifhelper->getAdifLine($qso);
}
// Free memory
$qsos->free_result();
}
$offset += $chunk_size;
} while ($qsos->num_rows() > 0);
exit;
}