add image queue crawler

config/app.php.txt

@@ -94,19 +94,44 @@ define('CRAWL_STOP_DISK_QUOTA_MB_LEFT', 500);
  */
 define('CRAWL_PAGE_LIMIT', 10);
 
+/*
+ * Images (URI) processing limit in the crawler.php queue
+ *
+ * This option related to CRAWL_IMAGE_SECONDS_OFFSET value
+ * and the crontab task frequency (https://github.com/YGGverse/YGGo#crontab)
+ *
+ * Usually up to 20 pages per minute,
+ * to prevent websites overload by sending GET crawling requests
+ *
+ */
+define('CRAWL_IMAGE_LIMIT', 20);
+
 /*
  * Renew page index by timing offset provided
  *
  * This option works with CRAWL_PAGE_LIMIT step queue
  *
  * Pay attention, that CRAWL_PAGE_LIMIT + CRAWL_PAGE_SECONDS_OFFSET pair
- * must have enought value to crawl all pages collected in the DB index
+ * must have enough value to crawl all pages collected in the DB index
  *
  * or the crawler can stuck in queue
  *
  */
 define('CRAWL_PAGE_SECONDS_OFFSET', 60*60*24*30*12);
 
+/*
+ * Renew image index by timing offset provided
+ *
+ * This option works with CRAWL_IMAGE_LIMIT step queue
+ *
+ * Pay attention, that CRAWL_IMAGE_LIMIT + CRAWL_IMAGE_SECONDS_OFFSET pair
+ * must have enough value to crawl all images collected in the DB index
+ *
+ * or the crawler can stuck in queue
+ *
+ */
+define('CRAWL_IMAGE_SECONDS_OFFSET', 60*60*24*30*12);
+
 /*
  * Only URL addresses match this rule will be auto-crawled
  *
@@ -216,7 +241,7 @@ define('CLEAN_HOST_LIMIT', 20);
  * This option works with CLEAN_HOST_LIMIT step queue
  *
  * Pay attention, that CLEAN_HOST_LIMIT + CLEAN_HOST_SECONDS_OFFSET pair
- * must have enought value to process all pages in the DB index
+ * must have enough value to process all pages in the DB index
  *
  * or the cleaner can stuck in queue
  *

crontab/crawler.php

@@ -28,7 +28,9 @@ if (CRAWL_STOP_DISK_QUOTA_MB_LEFT > disk_free_space('/') / 1000000) {
 $timeStart = microtime(true);
 
 $hostPagesProcessed  = 0;
+$hostImagesProcessed = 0;
 $hostPagesIndexed    = 0;
+$hostImagesIndexed   = 0;
 $hostPagesAdded      = 0;
 $hostImagesAdded     = 0;
 $hostsAdded          = 0;
@@ -36,8 +38,49 @@ $hostsAdded         = 0;
 // Connect database
 $db = new MySQL(DB_HOST, DB_PORT, DB_NAME, DB_USERNAME, DB_PASSWORD);
 
-// Process crawl queue
-foreach ($db->getCrawlQueue(CRAWL_PAGE_LIMIT, time() - CRAWL_PAGE_SECONDS_OFFSET) as $queueHostPage) {
+// Process images crawl queue
+foreach ($db->getHostImageCrawlQueue(CRAWL_IMAGE_LIMIT, time() - CRAWL_IMAGE_SECONDS_OFFSET) as $queueHostImage) {
+
+  // Build URL from the DB
+  $queueHostImageURL = $queueHostImage->scheme . '://' . $queueHostImage->name . ($queueHostImage->port ? ':' . $queueHostImage->port : false) . $queueHostImage->uri;
+
+  $curl = new Curl($queueHostImageURL);
+
+  // Update image index anyway, with the current time and http code
+  $hostImagesProcessed += $db->updateHostImageCrawlQueue($queueHostImage->hostImageId, time(), $curl->getCode());
+
+  // Skip next image processing non 200 code
+  if (200 != $curl->getCode()) {
+
+    continue;
+  }
+
+  // Save image content on data settings enabled
+  if (!CRAWL_HOST_DEFAULT_META_ONLY) {
+
+    // Skip next image processing images without returned data
+    if (!$content = $curl->getContent()) {
+
+      continue;
+    }
+
+    // Convert remote image data to base64 string to prevent direct URL call
+    if (!$hostImageType = @pathinfo($queueHostImageURL, PATHINFO_EXTENSION)) {
+
+      continue;
+    }
+
+    if (!$hostImageBase64 = @base64_encode($curl->getContent())) {
+
+      continue;
+    }
+
+    $hostImagesIndexed += $db->updateHostImageData($hostImage->hostImageId, (string) 'data:image/' . $hostImageType . ';base64,' . $hostImageBase64, time());
+  }
+}
+
+// Process pages crawl queue
+foreach ($db->getHostPageCrawlQueue(CRAWL_PAGE_LIMIT, time() - CRAWL_PAGE_SECONDS_OFFSET) as $queueHostPage) {
 
   // Build URL from the DB
   $queueHostPageURL = $queueHostPage->scheme . '://' . $queueHostPage->name . ($queueHostPage->port ? ':' . $queueHostPage->port : false) . $queueHostPage->uri;
@@ -45,7 +88,7 @@ foreach ($db->getCrawlQueue(CRAWL_PAGE_LIMIT, time() - CRAWL_PAGE_SECONDS_OFFSET
   $curl = new Curl($queueHostPageURL);
 
   // Update page index anyway, with the current time and http code
-  $hostPagesProcessed += $db->updateCrawlQueue($queueHostPage->hostPageId, time(), $curl->getCode());
+  $hostPagesProcessed += $db->updateHostPageCrawlQueue($queueHostPage->hostPageId, time(), $curl->getCode());
 
   // Skip next page processing non 200 code
   if (200 != $curl->getCode()) {
@@ -427,6 +470,8 @@ foreach ($db->getCrawlQueue(CRAWL_PAGE_LIMIT, time() - CRAWL_PAGE_SECONDS_OFFSET
 echo 'Pages processed: ' . $hostPagesProcessed . PHP_EOL;
 echo 'Pages indexed: ' . $hostPagesIndexed . PHP_EOL;
 echo 'Pages added: ' . $hostPagesAdded . PHP_EOL;
+echo 'Images processed: ' . $hostImagesProcessed . PHP_EOL;
+echo 'Images indexed: ' . $hostImagesIndexed . PHP_EOL;
 echo 'Images added: ' . $hostImagesAdded . PHP_EOL;
 echo 'Hosts added: ' . $hostsAdded . PHP_EOL;
 echo 'Total time: ' . microtime(true) - $timeStart . PHP_EOL;

library/mysql.php

@@ -502,7 +502,7 @@ class MySQL {
   }
 
   // Crawl tools
-  public function getCrawlQueue(int $limit, int $timeFrom) {
+  public function getHostPageCrawlQueue(int $limit, int $timeFrom) {
 
     $query = $this->_db->prepare('SELECT `hostPage`.`hostId`,
                                          `hostPage`.`hostPageId`,
@@ -530,7 +530,7 @@ class MySQL {
     return $query->fetchAll();
   }
 
-  public function updateCrawlQueue(string $hostPageId, int $timeUpdated, int $httpCode) {
+  public function updateHostPageCrawlQueue(int $hostPageId, int $timeUpdated, int $httpCode) {
 
     $query = $this->_db->prepare('UPDATE `hostPage` SET `timeUpdated` = ?, `httpCode` = ? WHERE `hostPageId` = ? LIMIT 1');
 
@@ -538,4 +538,36 @@ class MySQL {
 
     return $query->rowCount();
   }
+
+  public function getHostImageCrawlQueue(int $limit, int $timeFrom) {
+
+    $query = $this->_db->prepare('SELECT `hostImage`.`hostId`,
+                                         `hostImage`.`hostImageId`,
+                                         `hostImage`.`uri`,
+                                         `host`.`scheme`,
+                                         `host`.`name`,
+                                         `host`.`port`
+
+                                          FROM `hostImage`
+                                          JOIN `host` ON (`host`.`hostId` = `hostImage`.`hostId`)
+
+                                          WHERE (`hostImage`.`timeUpdated` IS NULL OR `hostImage`.`timeUpdated` < ? ) AND `host`.`status` <> 0
+
+                                          ORDER BY `hostImage`.`hostImageId`
+
+                                          LIMIT ' . (int) $limit);
+
+    $query->execute([$timeFrom]);
+
+    return $query->fetchAll();
+  }
+
+  public function updateHostImageCrawlQueue(int $hostImageId, int $timeUpdated, int $httpCode) {
+
+    $query = $this->_db->prepare('UPDATE `hostImage` SET `timeUpdated` = ?, `httpCode` = ? WHERE `hostImageId` = ? LIMIT 1');
+
+    $query->execute([$timeUpdated, $httpCode, $hostImageId]);
+
+    return $query->rowCount();
+  }
 }

public/api.php

@@ -1,7 +1,7 @@
 <?php
 
 // Current version
-define('API_VERSION', 0.3);
+define('API_VERSION', 0.4);
 
 // Load system dependencies
 require_once('../config/app.php');
@@ -132,6 +132,7 @@ if (API_ENABLED) {
               'crawlHostDefaultStatus'      => CRAWL_HOST_DEFAULT_STATUS,
               'crawlHostDefaultMetaOnly'    => CRAWL_HOST_DEFAULT_META_ONLY,
               'crawlHostPageSecondsOffset'  => CRAWL_PAGE_SECONDS_OFFSET,
+              'crawlHostImageSecondsOffset' => CRAWL_IMAGE_SECONDS_OFFSET,
               'cleanHostSecondsOffset'      => CLEAN_HOST_SECONDS_OFFSET,
               'crawlRobotsDefaultRules'     => CRAWL_ROBOTS_DEFAULT_RULES,
               'crawlRobotsPostfixRules'     => CRAWL_ROBOTS_POSTFIX_RULES,