parse.php

@@ -1,48 +1,89 @@
<?php
require_once(__DIR__.'/lib/fetch.php');
require_once(__DIR__.'/lib/mapper.php');

$logger = new Monolog\Logger('Parse changes');

$sources = [
   'buses' => [
      'gtfs' => 'ftp://ztp.krakow.pl/VehiclePositions_A.pb',
      'gtfs_file' => 'VehiclePositions_A.pb',
      'ttss' => 'http://91.223.13.70/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
      'ttss_file' => 'vehicles_A.json',
      'result' => 'mapping_A.json',
   ],
];
require_once(__DIR__.'/vendor/autoload.php');
require_once(__DIR__.'/config.php');

foreach($sources as $name => $source) {
   $logger = new Monolog\Logger('fetch_'.$name);
   try {
      $logger->info('Fetching '.$name.' position data from FTP...');
      $updated = ftp_fetch_if_newer($source['gtfs'], __DIR__.'/data/'.$source['gtfs_file']);
      $updated = Fetch::ftp($source['gtfsrt'], $source['gtfsrt_file']);
      if(!$updated) {
         $logger->info('Nothing to do, remote file not newer than local one');
         continue;
      }
      
      $logger->info('Fetching '.$name.' positions from TTSS...');
      fetch($source['ttss'], __DIR__.'/data/'.$source['ttss_file']);
      $logger->info('Fetching '.$name.' position data from TTSS...');
      Fetch::generic($source['ttss'], $source['ttss_file']);
      
      $logger->info('Loading data...');
      $mapper = new Mapper();
      $mapper->loadTTSS(__DIR__.'/data/'.$source['ttss_file']);
      $mapper->loadGTFS(__DIR__.'/data/'.$source['gtfs_file']);
		
      $mapper->loadTTSS($source['ttss_file']);
      $timeDifference = time() - $mapper->getTTSSDate();
      if(abs($timeDifference) > 120) {
         throw new Exception('TTSS timestamp difference ('.$timeDifference.'s) is too high, aborting!');
      }
		
      $mapper->loadGTFSRT($source['gtfsrt_file']);
      $timeDifference = time() - $mapper->getGTFSRTDate();
      if(abs($timeDifference) > 120) {
         throw new Exception('GTFSRT timestamp difference ('.$timeDifference.'s) is too high, aborting!');
      }
		
      $db = new Database($source['database']);
      
      $logger->info('Finding correct offset...');
      $offset = $mapper->findOffset();
      if($offset) {
         $logger->info('Got offset '.$offset.', creating mapping...');
         $mapping = $mapper->getMapping($offset);
         $json = json_encode($mapping);
         if(!file_put_contents(__DIR__.'/data/'.$source['result'].'.tmp', $json)) {
            throw new Exception('Result save failed');
         }
         rename(__DIR__.'/data/'.$source['result'].'.tmp', __DIR__.'/data/'.$source['result']);
      if(!$offset) {
         throw new Exception('Offset not found');
      }
		
      $logger->info('Got offset '.$offset.', creating mapping...');
      $mapping = $mapper->mapUsingOffset($offset);
		
      $logger->info('Checking the data for correctness...');
      $weight = count($mapping);
		
      $correct = 0;
      $incorrect = 0;
      $old = 0;
      $maxWeight = 0;
      foreach($mapping as $id => $num) {
         $dbVehicle = $db->getById($id);
         if($dbVehicle) {
            $maxWeight = max($maxWeight, (int)$dbVehicle['weight']);
            if($num === $dbVehicle['num']) {
               $correct += 1;
            } else {
               $incorrect += 1;
            }
            continue;
         }
			
         $dbVehicle = $db->getByNum($num);
         if($dbVehicle && $dbVehicle['id'] !== $id) {
            $old += 1;
         }
      }

      $logger->info('Weight: '.$weight.', correct: '.$correct.', incorrect: '.$incorrect.', old: '.$old);
		
      if($incorrect > $correct && $maxWeight > $weight) {
         throw new Exception('Ignoring result due to better data already present');
      }
		
		
      $logger->info('Creating mapping...');
		
      $db->addMapping($mapping);
		
      $finalMapping = Output::createMapping($db, $source['mapper'], $source);
		
		
      $logger->info('Creating vehicle list...');
		
      Output::createVehiclesList($mapper->getTTSSTrips(), $finalMapping, $source);
		
      $logger->info('Finished');
   } catch(Throwable $e) {
      $logger->error($e->getMessage(), ['exception' => $e, 'exception_string' => (string)$e]);