comparison src/DML/MainVisBundle/Command/Views/Geography/ParsePlacesCommand.php @ 0:493bcb69166c

added public content
author Daniel Wolff
date Tue, 09 Feb 2016 20:54:02 +0100
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-1:000000000000 0:493bcb69166c
1 <?php
2 namespace DML\MainVisBundle\Command\Views\Geography;
3
4 use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
5 use Symfony\Component\Console\Input\InputArgument;
6 use Symfony\Component\Console\Input\InputInterface;
7 use Symfony\Component\Console\Input\InputOption;
8 use Symfony\Component\Console\Output\OutputInterface;
9
10 class ParsePlacesCommand extends ContainerAwareCommand
11 {
12 protected $sourceURL = "http://mirg.city.ac.uk/cp/api/v4/listPlaces?format=json";
13 protected $nominatimURLTemplate = "http://nominatim.openstreetmap.org/search?format=json&limit=1&addressdetails=1&email=%s&q=%s";
14 protected $nominatimEmail = "alexander.kachkaev@city.ac.uk";
15 protected $nominatimAppName = "DML VIS (place name caching script)"; //
16 protected $resultRelativePath = "$/views/geography/parsedPlaces.json";
17 protected $secondsBetweenRequests = 1;
18
19 protected function configure()
20 {
21 $this
22 ->setName('dml:views:geography:parse-places')
23 ->setDescription('For each place attribute found at the cliopatria server, collects geo data from OSM Nominatim and saves the result to a web dir')
24 ->addOption(
25 'reset',
26 null,
27 InputOption::VALUE_NONE,
28 'Resets the result file before the start'
29 )
30 ->addOption(
31 'process-nulls',
32 null,
33 InputOption::VALUE_NONE,
34 'Re-obtains data for items that were null in the result (could not be geocoded eariler)'
35 )
36 ;
37 }
38
39 protected function execute(InputInterface $input, OutputInterface $output)
40 {
41 $output->writeln(sprintf("Reading from <comment>%s</comment>", $this->sourceURL));
42
43 $sourceData = json_decode(file_get_contents($this->sourceURL), true);
44
45 $placeNames = array();
46 foreach($sourceData["result"]["places"] as $placeEntity) {
47 array_push($placeNames, $placeEntity["name"]);
48 }
49
50 $output->writeln(sprintf("<comment>%s</comment> places found.", sizeof($placeNames)));
51
52 $resultPath = $this->getContainer()->getParameter("kernel.root_dir") . '/../' . $this->resultRelativePath;
53
54 $result = array();
55 if (!file_exists($resultPath) || $input->getOption("reset")) {
56 $output->writeln(sprintf("Starting from scratch...", sizeof($placeNames)));
57 $placeNamesToProcess = $placeNames;
58 } else {
59 $result = json_decode(file_get_contents($resultPath), true);
60 $existingPlaceNames = array_keys($result);
61 $placeNamesToProcess = array_diff($placeNames, $existingPlaceNames);
62
63 if ($input->getOption("process-nulls")) {
64 foreach($existingPlaceNames as $placeName) {
65 if ($result[$placeName] == null) {
66 array_push($placeNamesToProcess, $placeName);
67 }
68 }
69 }
70 }
71 $output->writeln(sprintf("<comment>%s</comment> place names to process.", sizeof($placeNamesToProcess)));
72
73 foreach($placeNamesToProcess as $placeName) {
74 $output->write(sprintf('<comment>%s</comment>', $placeName));
75 $chunks = explode(',', str_replace(array("(", ")"), array(",", ""), $placeName));
76 $placeResult = null;
77 for ($i = 0; $i < sizeof($chunks); $i++) {
78 $query = implode(', ', array_slice($chunks, $i));
79 $queryURL = sprintf($this->nominatimURLTemplate, urlencode($this->nominatimEmail), urlencode($query));
80
81 $allowedNOfErrors = 5;
82 while (--$allowedNOfErrors) {
83 sleep($this->secondsBetweenRequests);
84 $ch = curl_init($queryURL);
85 curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
86 curl_setopt($ch,CURLOPT_TIMEOUT,30);
87 curl_setopt($ch,CURLOPT_USERAGENT,$this->nominatimAppName);
88 $curlOutput = curl_exec($ch);
89 $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
90 curl_close($ch);
91
92 if ($httpcode !== 200) {
93 $output->write(sprintf('<error>!%s!</error>', $httpcode));
94 } else {
95 $nominatimResult = json_decode($curlOutput, true);
96 if (sizeof($nominatimResult)) {
97 $placeResult = $nominatimResult[0]['address'];
98 if ($i) {
99 $placeResult['trim'] = $i;
100 }
101 }
102 break;
103 }
104 }
105 if (!$allowedNOfErrors) {
106 throw new \Exception("Too many consequent errors in \"$queryURL\" :\n $curlOutput");
107 }
108 if ($placeResult) {
109 break;
110 } else {
111 $output->write(sprintf('<info>%s</info>', $i + 1));
112 }
113 }
114 if ($placeResult) {
115 $output->writeln('<info>+</info>');
116 } else {
117 $output->writeln('<error>-</error>');
118 }
119
120 $result[$placeName] = $placeResult;
121
122 $encodedResult = json_encode($result);
123 $encodedResult = str_replace(array('null,', '},', '}}'), array("null,\n", "},\n", "}\n}"), $encodedResult);
124
125 file_put_contents($resultPath, $encodedResult);
126 }
127
128 $output->writeln("Done.");
129 }
130 }