parse.php

@@ -1,4 +1,5 @@
<?php
require_once(__DIR__.'/lib/database.php');
require_once(__DIR__.'/lib/fetch.php');
require_once(__DIR__.'/lib/mapper.php');

@@ -10,34 +11,94 @@
      'gtfs_file' => 'VehiclePositions_A.pb',
      'ttss' => 'http://91.223.13.70/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
      'ttss_file' => 'vehicles_A.json',
      'database' => 'mapping_A.sqlite3',
      'result' => 'mapping_A.json',
   ],
];

foreach($sources as $name => $source) {
   $logger = new Monolog\Logger('fetch_'.$name);
   try {
      foreach(['gtfs_file', 'ttss_file', 'database', 'result'] as $field) {
         $source[$field] = __DIR__.'/data/'.$source[$field];
      }
      $source['result_temp'] = $source['result'].'.tmp';
		
      $logger->info('Fetching '.$name.' position data from FTP...');
      $updated = ftp_fetch_if_newer($source['gtfs'], __DIR__.'/data/'.$source['gtfs_file']);
      $updated = ftp_fetch_if_newer($source['gtfs'], $source['gtfs_file']);
      if(!$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']);
      fetch($source['ttss'],$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']);
      $mapper->loadGTFS($source['gtfs_file']);
		
      $db = new Database($source['database']);
      
      $logger->info('Finding correct offset...');
      $offset = $mapper->findOffset();
      if($offset) {
         $logger->info('Got offset '.$offset.', creating mapping...');
         $mapping = $mapper->getMapping($offset);
         echo json_encode($mapping);
      if(!$offset) {
         throw new Exception('Offset not found');
      }
		
      $logger->info('Got offset '.$offset.', creating mapping...');
      $mapping = $mapper->getMapping($offset);
		
      $logger->info('Checking the data for correctness...');
      $weight = count($mapping);
		
      $correct = 0;
      $incorrect = 0;
      $old = 0;
      $maxWeight = 0;
      foreach($mapping as $id => $vehicle) {
         $dbVehicle = $db->getById($id);
         if($dbVehicle) {
            $maxWeight = max($maxWeight, $dbVehicle['weight']);
            if((int)substr($vehicle['num'], 2) == (int)$dbVehicle['num']) {
               $correct += 1;
            } else {
               $incorrect += 1;
            }
            continue;
         }
			
         $dbVehicle = $db->getByNum($vehicle['num']);
         if($dbVehicle && $dbVehicle['id'] != $id) {
            $old += 1;
         }
      }
      $logger->info('Weight: '.$weight.', correct: '.$correct.', incorrect: '.$incorrect.', old: '.$old);
		
      $previousMapping = NULL;
      if($incorrect > $correct && $maxWeight > $weight) {
         throw new Exception('Ignoring result due to better data already present');
      } elseif($old > 0 && $incorrect == 0) {
         $logger->warn('Replacing DB data with the new mapping');
         $db->clear();
      } else {
         $previousMapping = @json_decode(@file_get_contents($source['result']), TRUE);
      }
		
      $db->addMapping($mapping);
		
      if(is_array($previousMapping)) {
         $logger->info('Merging previous data with current mapping');
         $mapping = $previousMapping + $mapping;
         ksort($mapping);
      }
		
      $json = json_encode($mapping);
      if(!file_put_contents($source['result_temp'], $json)) {
         throw new Exception('Result save failed');
      }
      rename($source['result_temp'], $source['result']);
      $logger->info('Finished');
   } catch(Throwable $e) {
      $logger->error($e->getMessage(), ['exception' => $e, 'exception_string' => (string)$e]);