1 files changed, 74 insertions, 0 deletions
diff --git a/crawler/CrawlController.php b/crawler/CrawlController.php
new file mode 100644
index 0000000..e5a270b
--- /dev/null
+++ b/crawler/CrawlController.php
@@ -0,0 +1,74 @@
+<?php
+/**
+ * User: Marvin Borner
+ * Date: 14/09/2018
+ * Time: 23:48
+ */
+
+include 'mysql_conf.inc';
+
+class CrawlController
+{
+    public function __construct()
+    {
+        set_time_limit(3600000);
+        error_reporting(E_ERROR | E_PARSE);
+
+        $currentlyCrawled = $argv[1] ?? '';
+
+        while (true) {
+            crawl($currentlyCrawled);
+        }
+    }
+
+    public function crawl($url)
+    {
+        global $currentlyCrawled;
+
+        if (Database::alreadyCrawled(Algorithms::cleanUrl($url))) {
+            print "\t\e[91mUrl already crawled " . $url . "\n";
+
+            Database::removeFromQueue($currentlyCrawled);
+            $currentlyCrawled = $this->getFromQueue('DESC');
+        } else {
+            $requestResponse = getContent($url);
+            $currentlyCrawled = $requestResponse[3];
+            if (preg_match('/2\d\d/', $requestResponse[1])) { // success
+                print 'Download Size: ' . $requestResponse[2];
+
+                $htmlPath = Algorithms::createPathFromHtml($requestResponse[0]);
+                $urlInfo = Algorithms::getUrlInfo($htmlPath);
+                $allLinks = Algorithms::getLinks($htmlPath);
+
+                Database::writeToQueue($allLinks);
+                $this->saveData($urlInfo, $currentlyCrawled);
+
+                Database::removeFromQueue($currentlyCrawled);
+                $currentlyCrawled = Database::getFromQueue('DESC'); // set new from start
+            } else {
+                print "\t\e[91mError " . $requestResponse[1] . ' ' . $currentlyCrawled . "\n";
+
+                Database::urlHasError($currentlyCrawled); // prevents re-crawling of error url
+                Database::removeFromQueue($currentlyCrawled);
+                $currentlyCrawled = Database::getFromQueue('ASC'); // set new from end
+            }
+        }
+    }
+
+    public function saveData($urlInfo, $url)
+    {
+        if ($url !== '') {
+            print "\e[96mFinished previous url - crawling: " . $url . "\n";
+
+            $title = $urlInfo['title'] ?? '';
+            $description = $urlInfo['description'] ?? '';
+            $language = $urlInfo['language'] ?? 'en';
+            $hash = md5($url);
+            $data = [$title, $description, $language, $hash];
+
+            Database::saveUrlData($data);
+        }
+    }
+
+
+}
+\ No newline at end of file