LICENSE

New file
@@ -0,0 +1,29 @@
BSD 3-Clause License

Copyright (c) 2016-2019, Jacek Kowalski (http://jacekk.info)
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

3. Neither the name Jacekk.info, nor Jacekk.net, nor the names of its
   contributors may be used to endorse or promote products derived from this
   software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 README.md

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@@ -0,0 +1,6 @@
# Mapping of TTSS ID to vehicle number

## Usage

To gather vehicle to ID mapping run `parse.php`.
Files `mapping_A.json` and `mapping_T.json` are put in `data` directory.

 config.php

New file
@@ -0,0 +1,38 @@
<?php
$sources = [
    'bus' => [
        'gtfsrt' => 'ftp://ztp.krakow.pl/VehiclePositions_A.pb',
        'gtfsrt_file' => 'VehiclePositions_A.pb',
        'ttss' => 'http://ttss.mpk.krakow.pl/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
        'ttss_file' => 'vehicles_A.json',
        'database' => 'mapping_A.sqlite3',
        'result' => 'mapping_A.json',
        'mapper' => 'numToTypeB',
    ],
    'tram' => [
        'gtfsrt' => 'ftp://ztp.krakow.pl/VehiclePositions_T.pb',
        'gtfsrt_file' => 'VehiclePositions_T.pb',
        'ttss' => 'http://www.ttss.krakow.pl/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
        'ttss_file' => 'vehicles_T.json',
        'database' => 'mapping_T.sqlite3',
        'result' => 'mapping_T.json',
        'mapper' => 'numToTypeT',
    ],
    'tram2' => [
        'gtfsrt' => 'ftp://ztp.krakow.pl/VehiclePositions.pb',
        'gtfsrt_file' => 'VehiclePositions_T.pb',
        'ttss' => 'http://www.ttss.krakow.pl/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
        'ttss_file' => 'vehicles_T.json',
        'database' => 'mapping_T.sqlite3',
        'result' => 'mapping_T.json',
        'mapper' => 'numToTypeT',
    ],
]; 

foreach($sources as $name => &$source) {
    foreach(['gtfsrt_file', 'ttss_file', 'database', 'result'] as $field) {
        $source[$field] = __DIR__.'/data/'.$source[$field];
    }
    $source['result_temp'] = $source['result'].'.tmp';
}
unset($source);

 lib/database.php

@@ -1,9 +1,10 @@
<?php
class Database {
    private $pdo;
    private $getByIdStatement;
    private $getByNumStatement;
    private $addStatement;
	
    private $cacheId;
    private $cacheNum;
    
    public function __construct($file) {
        $this->pdo = new PDO('sqlite:'.$file);
@@ -15,9 +16,9 @@
            weight INT
        )');
        
        $this->getByIdStatement = $this->pdo->prepare('SELECT num, weight FROM vehicles WHERE id=? LIMIT 1');
        $this->getByNumStatement = $this->pdo->prepare('SELECT id, weight FROM vehicles WHERE num=? LIMIT 1');
        $this->addStatement = $this->pdo->prepare('INSERT OR REPLACE INTO vehicles (id, num, weight) VALUES (?, ?, ?)');
        $this->addStatement = $this->pdo->prepare('INSERT OR REPLACE INTO vehicles (id, num, weight) VALUES (:id, :num, :weight)');
		
        $this->_cacheClear();
    }
    
    public function beginTransaction() {
@@ -32,29 +33,66 @@
        $this->pdo->rollback();
    }
    
    protected function _cachePopulate() {
        if($this->cacheId === NULL) {
            $st = $this->pdo->prepare('SELECT * FROM vehicles');
            $st->execute();
            $result = $st->fetchAll(PDO::FETCH_ASSOC);
			
            $this->cacheId = [];
            $this->cacheNum = [];
            foreach($result as $vehicle) {
                $this->_cacheAdd($vehicle);
            }
        }
    }
	
    protected function _cacheAdd($vehicle) {
        $this->_cachePopulate();
        $this->cacheId[$vehicle['id']] = $vehicle;
        $this->cacheNum[$vehicle['num']] = $vehicle;
    }
	
    protected function _cacheClear() {
        $this->cacheId = NULL;
        $this->cacheNum = NULL;
    }
	
    public function getAll() {
        $this->_cachePopulate();
        return $this->cacheId;
    }
	
    public function getById($id) {
        $this->getByIdStatement->execute([$id]);
        return $this->getByIdStatement->fetch();
        $this->_cachePopulate();
        return $this->cacheId[$id] ?? NULL;
    }
    
    public function getByNum($num) {
        $st = $this->getByNumStatement->execute([(int)substr($num, 2)]);
        return $this->getByNumStatement->fetch();
        $this->_cachePopulate();
        return $this->cacheNum[$num] ?? NULL;
    }
    
    public function clear() {
        $this->pdo->query('DELETE FROM vehicles');
        $this->_cacheClear();
    }
    
    public function add($id, $num, $weight) {
        $this->addStatement->execute([$id, $num, $weight]);
        $vehicle = [
            'id' => (string)$id,
            'num' => (string)$num,
            'weight' => (string)$weight
        ];
        $this->addStatement->execute($vehicle);
        $this->_cacheAdd($vehicle);
    }
    
    public function addMapping($mapping) {
        $this->beginTransaction();
        $weight = count($mapping);
        foreach($mapping as $id => $vehicle) {
            $this->add($id, (int)substr($vehicle['num'], 2), $weight);
        foreach($mapping as $id => $num) {
            $this->add($id, $num, $weight);
        }
        $this->commit();
    }

 lib/mapper.php

@@ -1,7 +1,4 @@
<?php
require_once(__DIR__.'/../vendor/autoload.php');
require_once(__DIR__.'/vehicle_types.php');

use transit_realtime\FeedMessage;

class Mapper {
@@ -42,8 +39,8 @@
                    continue;
                }
            }
            $this->ttssTrips[(int)$vehicle->tripId] = [
                'id' => $vehicle->id,
            $this->ttssTrips[(string)$vehicle->tripId] = [
                'id' => (string)$vehicle->id,
                'latitude' => (float)$vehicle->latitude / 3600000.0,
                'longitude' => (float)$vehicle->longitude / 3600000.0,
            ];
@@ -67,7 +64,7 @@
            $trip = $vehiclePosition->getTrip();
            $tripId = $trip->getTripId();
            $this->gtfsrtTrips[self::convertTripId($tripId)] = [
                'id' => $entity->getId(),
                'id' => (string)$entity->getId(),
                'num' => $vehicle->getLicensePlate(),
                'tripId' => $tripId,
                'latitude' => $position->getLatitude(),
@@ -126,23 +123,12 @@
        return $bestOffset;
    }
    
    public function mapUsingOffset($offset, $mapper) {
    public function mapUsingOffset($offset) {
        $result = [];
        foreach($this->gtfsrtTrips as $gtfsTripId => $gtfsTrip) {
            $ttssTripId = $gtfsTripId + $offset;
            if(isset($this->ttssTrips[$ttssTripId])) {
                $data = $mapper($gtfsTrip['id']);
                $num = $gtfsTrip['num'];
                if(!is_array($data) || !isset($data['num'])) {
                    $data = [
                        'num' => $num ?: '??'.$gtfsTrip['id'],
                        'low' => NULL,
                    ];
                } elseif($data['num'] != $num) {
                    // Ignore due to incorrect depot markings in the data
                    //$this->logger->warn('Got '.$num.', database has '.$data['num']);
                }
                $result[$this->ttssTrips[$ttssTripId]['id']] = $data;
                $result[$this->ttssTrips[$ttssTripId]['id']] = $gtfsTrip['id'];
            }
        }
        return $result;

 lib/vehicle_types.php

@@ -11,7 +11,11 @@
            ];
        }
    }
    return [];
    return [
        'num' => '??'.$id,
        'type' => '?',
        'low' => NULL,
    ];
}
function numToTypeT($id) {
$data = <<<'END'

 parse.php

@@ -1,48 +1,14 @@
<?php
require_once(__DIR__.'/vendor/autoload.php');
require_once(__DIR__.'/lib/database.php');
require_once(__DIR__.'/lib/fetch.php');
require_once(__DIR__.'/lib/mapper.php');

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

$sources = [
    'bus' => [
        'gtfsrt' => 'ftp://ztp.krakow.pl/VehiclePositions_A.pb',
        'gtfsrt_file' => 'VehiclePositions_A.pb',
        'ttss' => 'http://ttss.mpk.krakow.pl/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
        'ttss_file' => 'vehicles_A.json',
        'database' => 'mapping_A.sqlite3',
        'result' => 'mapping_A.json',
        'mapper' => 'numToTypeB',
    ],
    'tram' => [
        'gtfsrt' => 'ftp://ztp.krakow.pl/VehiclePositions_T.pb',
        'gtfsrt_file' => 'VehiclePositions_T.pb',
        'ttss' => 'http://www.ttss.krakow.pl/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
        'ttss_file' => 'vehicles_T.json',
        'database' => 'mapping_T.sqlite3',
        'result' => 'mapping_T.json',
        'mapper' => 'numToTypeT',
    ],
    'tram2' => [
        'gtfsrt' => 'ftp://ztp.krakow.pl/VehiclePositions.pb',
        'gtfsrt_file' => 'VehiclePositions_T.pb',
        'ttss' => 'http://www.ttss.krakow.pl/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
        'ttss_file' => 'vehicles_T.json',
        'database' => 'mapping_T.sqlite3',
        'result' => 'mapping_T.json',
        'mapper' => 'numToTypeT',
    ],
];
require_once(__DIR__.'/lib/vehicle_types.php');
require_once(__DIR__.'/config.php');

foreach($sources as $name => $source) {
    $logger = new Monolog\Logger('fetch_'.$name);
    try {
        foreach(['gtfsrt_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['gtfsrt'], $source['gtfsrt_file']);
        if(!$updated) {
@@ -77,7 +43,7 @@
        }
        
        $logger->info('Got offset '.$offset.', creating mapping...');
        $mapping = $mapper->mapUsingOffset($offset, $source['mapper']);
        $mapping = $mapper->mapUsingOffset($offset);
        
        $logger->info('Checking the data for correctness...');
        $weight = count($mapping);
@@ -86,11 +52,11 @@
        $incorrect = 0;
        $old = 0;
        $maxWeight = 0;
        foreach($mapping as $id => $vehicle) {
        foreach($mapping as $id => $num) {
            $dbVehicle = $db->getById($id);
            if($dbVehicle) {
                $maxWeight = max($maxWeight, $dbVehicle['weight']);
                if((int)substr($vehicle['num'], 2) == (int)$dbVehicle['num']) {
                $maxWeight = max($maxWeight, (int)$dbVehicle['weight']);
                if($num === $dbVehicle['num']) {
                    $correct += 1;
                } else {
                    $incorrect += 1;
@@ -98,32 +64,26 @@
                continue;
            }
            
            $dbVehicle = $db->getByNum($vehicle['num']);
            if($dbVehicle && $dbVehicle['id'] != $id) {
            $dbVehicle = $db->getByNum($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 > $correct) {
            $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 = $mapping + $previousMapping;
            ksort($mapping);
        $jsonContent = [];
        foreach($db->getAll() as $vehicle) {
            $jsonContent[$vehicle['id']] = $source['mapper']($vehicle['num']);
        }
        
        $json = json_encode($mapping);
        $json = json_encode($jsonContent);
        if(!file_put_contents($source['result_temp'], $json)) {
            throw new Exception('Result save failed');
        }

 regenerate.php

New file
@@ -0,0 +1,28 @@
<?php
require_once(__DIR__.'/vendor/autoload.php');
require_once(__DIR__.'/lib/database.php');
require_once(__DIR__.'/lib/vehicle_types.php');
require_once(__DIR__.'/config.php');

foreach($sources as $name => $source) {
    $logger = new Monolog\Logger('regenerate_'.$name);
    try {
        $logger->info('Regenerating '.$name.'...');
		
        $db = new Database($source['database']);
		
        $jsonContent = [];
        foreach($db->getAll() as $vehicle) {
            $jsonContent[$vehicle['id']] = $source['mapper']($vehicle['num']);
        }
		
        $json = json_encode($jsonContent);
        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]);
    }
}