PHP Logger::logError方法代码示例

    /**
     * Zapisuje opis do zdjecia do pliku komentarzy.
     * 
     * @return bool True, jesli udalo sie zapisac opis.
     */
    function zapiszOpisZdjecia($opis) {
		$zawartoscPliku = file($this->nazwaPlikuKomentarzy);
		if (strtolower(substr($zawartoscPliku[0], 0, 3)) == "<b>") {
			// Zdjecie ma juz opis, nalezy zamienic go na nowy.
			$zawartoscPliku[0] = "<b>$opis</b><br><br>\n";
			if (NULL == ($uchwytPliku = fopen($this->nazwaPlikuKomentarzy, "w"))) {
				Logger::logError("Blad w DaneKomentarzyZPlikow::zapiszOpisZdjecia. Nie mozna otworzyc pliku '" . $this->nazwaPlikuKomentarzy . "'.");
				return false;
			} else {
				$zawartoscPliku = join("", $zawartoscPliku);
				fwrite($uchwytPliku, $zawartoscPliku);
		    	fclose($uchwytPliku);
		    	return true;
			}
		} else {
			// Zdjecie nie ma jeszcze opisu, nalezy go dopisac na poczatek pliku.
			if (NULL == ($uchwytPliku = fopen($this->nazwaPlikuKomentarzy, "w"))) {
				Logger::logError("Blad w DaneKomentarzyZPlikow::zapiszOpisZdjecia. Nie mozna otworzyc pliku '" . $this->nazwaPlikuKomentarzy . "'.");
				return false;
			} else {
				fwrite($uchwytPliku, "<b>$opis</b><br><br>\n");
				$zawartoscPliku = join("", $zawartoscPliku);
				fwrite($uchwytPliku, $zawartoscPliku);
				fclose($uchwytPliku);
				return true;
			}
		}
    }

 /**
  * If link is an image (Twitpic/Twitgoo/Yfrog/Flickr for now), insert direct path to thumb as expanded url.
  * @TODO Move image thumbnail processng to Expand URLs plugin.
  * @param Logger $logger
  * @param str $tweet
  * @param Array $urls
  */
 public static function processTweetURLs($logger, $tweet, $urls = null)
 {
     $link_dao = DAOFactory::getDAO('LinkDAO');
     if (!$urls) {
         $urls = Post::extractURLs($tweet['post_text']);
     }
     foreach ($urls as $u) {
         $logger->logInfo("processing url: {$u}", __METHOD__ . ',' . __LINE__);
         $is_image = 0;
         $title = '';
         $eurl = '';
         if (substr($u, 0, strlen('http://twitpic.com/')) == 'http://twitpic.com/') {
             $eurl = 'http://twitpic.com/show/thumb/' . substr($u, strlen('http://twitpic.com/'));
             $is_image = 1;
         } elseif (substr($u, 0, strlen('http://yfrog.com/')) == 'http://yfrog.com/') {
             $eurl = $u . '.th.jpg';
             $is_image = 1;
         } elseif (substr($u, 0, strlen('http://twitgoo.com/')) == 'http://twitgoo.com/') {
             $eurl = 'http://twitgoo.com/show/thumb/' . substr($u, strlen('http://twitgoo.com/'));
             $is_image = 1;
         } elseif (substr($u, 0, strlen('http://picplz.com/')) == 'http://picplz.com/') {
             $eurl = $u . '/thumb/';
             $is_image = 1;
         } elseif (substr($u, 0, strlen('http://flic.kr/')) == 'http://flic.kr/') {
             $is_image = 1;
         } elseif (substr($u, 0, strlen('http://instagr.am/')) == 'http://instagr.am/') {
             $is_image = 1;
         }
         if ($link_dao->insert($u, $eurl, $title, $tweet['post_id'], 'twitter', $is_image)) {
             $logger->logSuccess("Inserted " . $u . " (" . $eurl . ", " . $is_image . "), into links table", __METHOD__ . ',' . __LINE__);
         } else {
             $logger->logError("Did NOT insert " . $u . " (" . $eurl . ") into links table", __METHOD__ . ',' . __LINE__);
         }
     }
 }

 /**
  * For each API call left, grab oldest follow relationship, check if it exists, and update table.
  */
 public function cleanUpFollows()
 {
     $follow_dao = DAOFactory::getDAO('FollowDAO');
     $continue_fetching = true;
     while ($continue_fetching) {
         $oldfollow = $follow_dao->getOldestFollow('twitter');
         if ($oldfollow != null) {
             $endpoint = $this->api->endpoints['show_friendship'];
             $args = array();
             $args["source_id"] = $oldfollow["followee_id"];
             $args["target_id"] = $oldfollow["follower_id"];
             try {
                 $this->logger->logInfo("Checking stale follow last seen " . $oldfollow["last_seen"], __METHOD__ . ',' . __LINE__);
                 list($http_status, $payload) = $this->api->apiRequest($endpoint, $args);
                 if ($http_status == 200) {
                     $friendship = $this->api->parseJSONRelationship($payload);
                     if ($friendship['source_follows_target'] == 'true') {
                         $this->logger->logInfo("Updating follow last seen date: " . $args["source_id"] . " follows " . $args["target_id"], __METHOD__ . ',' . __LINE__);
                         $follow_dao->update($oldfollow["followee_id"], $oldfollow["follower_id"], 'twitter');
                     } else {
                         $this->logger->logInfo("Deactivating follow: " . $args["source_id"] . " does not follow " . $args["target_id"], __METHOD__ . ',' . __LINE__);
                         $follow_dao->deactivate($oldfollow["followee_id"], $oldfollow["follower_id"], 'twitter');
                     }
                     if ($friendship['target_follows_source'] == 'true') {
                         $this->logger->logInfo("Updating follow last seen date: " . $args["target_id"] . " follows " . $args["source_id"], __METHOD__ . ',' . __LINE__);
                         $follow_dao->update($oldfollow["follower_id"], $oldfollow["followee_id"], 'twitter');
                     } else {
                         $this->logger->logInfo("Deactivating follow: " . $args["target_id"] . " does not follow " . $args["source_id"], __METHOD__ . ',' . __LINE__);
                         $follow_dao->deactivate($oldfollow["follower_id"], $oldfollow["followee_id"], 'twitter');
                     }
                 } else {
                     $this->logger->logError("Got non-200 response for " . $endpoint->getShortPath(), __METHOD__ . ',' . __LINE__);
                     $error_code = $this->api->parseJSONErrorCodeAPI($payload);
                     if ($http_status == 403 && $error_code['error'] == 163) {
                         $this->logger->logError("Marking follow inactive due to 403 Source User Not Found " . "error response with API 163 error", __METHOD__ . ',' . __LINE__);
                         // deactivate in both directions
                         $follow_dao->deactivate($oldfollow["followee_id"], $oldfollow["follower_id"], 'twitter');
                         $follow_dao->deactivate($oldfollow["follower_id"], $oldfollow["followee_id"], 'twitter');
                     }
                     if ($http_status == 404) {
                         $this->logger->logError("Marking follow inactive due to 404 response", __METHOD__ . ',' . __LINE__);
                         // deactivate in both directions
                         $follow_dao->deactivate($oldfollow["followee_id"], $oldfollow["follower_id"], 'twitter');
                         $follow_dao->deactivate($oldfollow["follower_id"], $oldfollow["followee_id"], 'twitter');
                     }
                 }
             } catch (APICallLimitExceededException $e) {
                 $this->logger->logInfo($e->getMessage(), __METHOD__ . ',' . __LINE__);
                 break;
             }
         } else {
             $continue_fetching = false;
         }
     }
 }

    /**
     * Zwraca tablice obiektow zawierajacych informacje o galeriach zdjec.
     * 
     * Obiekty w tablicy maja pola takie, jak pola w bazodanowej tabeli "galeriaZdjec". 
     */
    function pobierzWszystkieGalerie() {
    	$daneGaleriiZdjec = FabrykaObiektowGaleriiZdjec::daneGaleriiZdjec();

    	$listaGaleriiZdjec = $daneGaleriiZdjec->pobierzWszystkieGalerie();
		
		if (count($listaGaleriiZdjec) == 0) {
			Logger::logError("Blad w metodzie ZarzadcaGaleriiZdjec::pobierzWszystkieGalerie. Nie znaleziono zadnej galerii zdjec.");
		}
		
		return $listaGaleriiZdjec;
    }

 /**
  * Save expanded version of all unexpanded URLs to data store, as well as intermediary short links.
  */
 public function expandOriginalURLs($flickr_api_key = null)
 {
     $links_to_expand = $this->link_dao->getLinksToExpand($this->link_limit);
     $this->logger->logUserInfo(count($links_to_expand) . " links to expand. Please wait. Working...", __METHOD__ . ',' . __LINE__);
     $total_expanded = 0;
     $total_errors = 0;
     $has_expanded_flickr_link = false;
     foreach ($links_to_expand as $index => $link) {
         if (Utils::validateURL($link->url)) {
             $endless_loop_prevention_counter = 0;
             $this->logger->logInfo("Expanding " . ($total_expanded + 1) . " of " . count($links_to_expand) . " (" . $link->url . ")", __METHOD__ . ',' . __LINE__);
             //make sure shortened short links--like t.co--get fully expanded
             $fully_expanded = false;
             $short_link = $link->url;
             while (!$fully_expanded) {
                 //begin Flickr thumbnail processing
                 if (isset($flickr_api_key) && substr($short_link, 0, strlen('http://flic.kr/')) == 'http://flic.kr/') {
                     self::expandFlickrThumbnail($flickr_api_key, $short_link, $link->url);
                     $has_expanded_flickr_link = true;
                     $fully_expanded = true;
                 }
                 //end Flickr thumbnail processing
                 $expanded_url = URLExpander::expandURL($short_link, $link->url, $index, count($links_to_expand), $this->link_dao, $this->logger);
                 if ($expanded_url == $short_link || $expanded_url == '' || $endless_loop_prevention_counter > self::EXPANSION_CAP) {
                     $fully_expanded = true;
                 } else {
                     $this->short_link_dao->insert($link->id, $short_link);
                 }
                 $short_link = $expanded_url;
                 $endless_loop_prevention_counter++;
             }
             if (!$has_expanded_flickr_link) {
                 if ($expanded_url != '') {
                     $image_src = URLProcessor::getImageSource($expanded_url);
                     $this->link_dao->saveExpandedUrl($link->url, $expanded_url, '', $image_src);
                     $total_expanded = $total_expanded + 1;
                 } else {
                     $this->logger->logError($link->url . " not a valid URL - relocates to nowhere", __METHOD__ . ',' . __LINE__);
                     $this->link_dao->saveExpansionError($link->url, "Invalid URL - relocates to nowhere");
                     $total_errors = $total_errors + 1;
                 }
             }
         } else {
             $total_errors = $total_errors + 1;
             $this->logger->logError($link->url . " not a valid URL", __METHOD__ . ',' . __LINE__);
             $this->link_dao->saveExpansionError($link->url, "Invalid URL");
         }
         $has_expanded_flickr_link = false;
     }
     $this->logger->logUserSuccess($total_expanded . " URLs successfully expanded (" . $total_errors . " errors).", __METHOD__ . ',' . __LINE__);
 }

 /**
  * If link is an image (Twitpic/Twitgoo/Yfrog/Flickr for now), insert direct path to thumb as expanded url.
  * @TODO Move image thumbnail processng to Expand URLs plugin.
  * @param Logger $logger
  * @param str $tweet
  * @param Array $urls
  */
 public static function processTweetURLs($logger, $tweet, $urls = null)
 {
     $link_dao = DAOFactory::getDAO('LinkDAO');
     if (!$urls) {
         $urls = Post::extractURLs($tweet['post_text']);
     }
     foreach ($urls as $u) {
         $logger->logInfo("processing url: {$u}", __METHOD__ . ',' . __LINE__);
         $is_image = 0;
         $title = '';
         $eurl = '';
         if (substr($u, 0, strlen('http://twitpic.com/')) == 'http://twitpic.com/') {
             $eurl = 'http://twitpic.com/show/thumb/' . substr($u, strlen('http://twitpic.com/'));
             $is_image = 1;
         } elseif (substr($u, 0, strlen('http://yfrog.com/')) == 'http://yfrog.com/') {
             $eurl = $u . '.th.jpg';
             $is_image = 1;
         } elseif (substr($u, 0, strlen('http://twitgoo.com/')) == 'http://twitgoo.com/') {
             $eurl = 'http://twitgoo.com/show/thumb/' . substr($u, strlen('http://twitgoo.com/'));
             $is_image = 1;
         } elseif (substr($u, 0, strlen('http://picplz.com/')) == 'http://picplz.com/') {
             $eurl = $u . '/thumb/';
             $is_image = 1;
         } elseif (substr($u, 0, strlen('http://flic.kr/')) == 'http://flic.kr/') {
             $is_image = 1;
         } elseif (substr($u, 0, strlen('http://instagr.am/')) == 'http://instagr.am/') {
             // see: http://instagr.am/developer/embedding/ for reference
             // the following does a redirect to the actual jpg
             // make a check for an end slash in the url -- if it is there (likely) then adding a second
             // slash prior to the 'media' string will break the expanded url
             if ($u[strlen($u) - 1] == '/') {
                 $eurl = $u . 'media/';
             } else {
                 $eurl = $u . '/media/';
             }
             $logger->logDebug("expanded instagram URL to: " . $eurl, __METHOD__ . ',' . __LINE__);
             $is_image = 1;
         }
         if ($link_dao->insert($u, $eurl, $title, $tweet['post_id'], 'twitter', $is_image)) {
             $logger->logSuccess("Inserted " . $u . " (" . $eurl . ", " . $is_image . "), into links table", __METHOD__ . ',' . __LINE__);
         } else {
             $logger->logError("Did NOT insert " . $u . " (" . $eurl . ") into links table", __METHOD__ . ',' . __LINE__);
         }
     }
 }

 /**
  * Check the validity of G+'s OAuth token by requestig the instance user's details.
  * Fetch details from Google+ API for the current instance user and insert into the datastore.
  * @param str $client_id
  * @param str $client_secret
  * @param str $access_token
  * @param str $refresh_token
  * @param str $owner_id
  * @return User
  */
 public function initializeInstanceUser($client_id, $client_secret, $access_token, $refresh_token, $owner_id)
 {
     $network = 'google+';
     $user_dao = DAOFactory::getDAO('UserDAO');
     $user_object = null;
     // Get owner user details and save them to DB
     $fields = array('fields' => 'displayName,id,image,tagline');
     $user_details = $this->api_accessor->apiRequest('people/me', $this->access_token, $fields);
     if (isset($user_details->error->code) && $user_details->error->code == '401') {
         //Token has expired, fetch and save a new one
         $tokens = self::getOAuthTokens($client_id, $client_secret, $refresh_token, 'refresh_token');
         if (isset($tokens->error) || !isset($tokens->access_token)) {
             $error_msg = "Oops! Something went wrong while obtaining OAuth tokens.<br>Google says \"";
             if (isset($tokens->error)) {
                 $error_msg .= $tokens->error;
             } else {
                 $error_msg .= Utils::varDumpToString($tokens);
             }
             $error_msg .= ".\" Please double-check your settings and try again.";
             $this->logger->logError($error_msg, __METHOD__ . ',' . __LINE__);
         } else {
             $owner_instance_dao = DAOFactory::getDAO('OwnerInstanceDAO');
             $owner_instance_dao->updateTokens($owner_id, $this->instance->id, $access_token, $refresh_token);
             $this->access_token = $tokens->access_token;
             //try again
             $user_details = $this->api_accessor->apiRequest('people/me', $this->access_token, $fields);
         }
     }
     if (isset($user_details)) {
         $user_details->network = $network;
         $user = $this->parseUserDetails($user_details);
     }
     if (isset($user)) {
         $user_object = new User($user, 'Owner initialization');
         $user_dao->updateUser($user_object);
     }
     if (isset($user_object)) {
         $this->logger->logSuccess("Successfully fetched " . $user_object->username . " " . $user_object->network . "'s details from Google+", __METHOD__ . ',' . __LINE__);
     } else {
         $this->logger->logInfo("Error fetching user details from the Google+ API, response was " . Utils::varDumpToString($user_details), __METHOD__ . ',' . __LINE__);
     }
     return $user_object;
 }

	/**
	 * Zwraca obiekt jednej z klas pochodnych klasy ZarzadcaKomentarzy.
	 * 
	 * Zaleznie od sposobu przechowywania komentarzy, zwracany obiekt jest obiektem klasy:
	 * - "pliki" ZarzadcaKomentarzyZPliku
	 * - "mysql" ZarzadcaKomentarzyZBazyDanychMysql
	 * - inny    null
	 */
	function daneKomentarzy() {
		$ustawieniaGaleriiZdjec = new UstawieniaGaleriiZdjec();
		
		$daneKomentarzy = null;
		
		switch ($ustawieniaGaleriiZdjec->domyslnySposobPrzechowywaniaKomentarzy) {
			case "mysql":
				include_once("DaneKomentarzyZBazyDanychMysql.class.php");
				$daneKomentarzy = new DaneKomentarzyZBazyDanychMysql($ustawieniaGaleriiZdjec->mysqlNazwaTabeliZKomentarzami);
				break;
			case "pliki":
				Logger::logError("Przechowywanie komentarzy do zdjec w plikach nie jest zaimplementowane.");				
				//include_once("DaneKomentarzyZPlikow.class.php");
				//$daneKomentarzy = new DaneKomentarzyZPlikow();
				break;
			default:
				Logger::logError("Nieznany typ przechowywania komentarzy: '" . $ustawieniaGaleriiZdjec->sposobPrzechowywaniaKomentarzy . "'");				
				break;
		}
		
		return $daneKomentarzy;
	}

 /**
  * For a given post, extract URLs and store them, including image_src if that's from a known source like Twitpic,
  * Twitgoo, Yfrog, Instagr.am.
  * @param str $post_text
  * @param int $post_id
  * @param str $network
  * @param Logger $logger
  * @param arr $urls Array of URLs, optionally set, defaults to null
  */
 public static function processPostURLs($post_text, $post_id, $network, $logger, $urls = null)
 {
     if (!$urls) {
         $urls = Post::extractURLs($post_text);
     }
     if ($urls) {
         $link_dao = DAOFactory::getDAO('LinkDAO');
         foreach ($urls as $url) {
             $logger->logInfo("Processing URL: {$url}", __METHOD__ . ',' . __LINE__);
             $image_src = self::getImageSource($url);
             //if we have an image_src, the URL is a known image source not in need of expansion
             $expanded_url = isset($image_src) ? $url : '';
             $link_array = array('url' => $url, 'expanded_url' => $expanded_url, "image_src" => $image_src, 'post_id' => $post_id, 'network' => $network);
             $link = new Link($link_array);
             if ($link_dao->insert($link)) {
                 $logger->logSuccess("Inserted " . $url . " (thumbnail " . $image_src . "), into links table", __METHOD__ . ',' . __LINE__);
             } else {
                 $logger->logError("Did NOT insert " . $url . " (thumbnail " . $image_src . ") into links table", __METHOD__ . ',' . __LINE__);
             }
         }
     }
 }

 /**
  * Convert parsed JSON of a profile or page's posts into ThinkUp posts and users
  * @param Object $stream
  * @param str $source The network for the post, either 'facebook' or 'facebook page'
  * @param int Page number being processed
  * @return int $total_added_posts How many posts (excluding comments) got added to the data store
  */
 private function processStream($stream, $network, $page_number)
 {
     $thinkup_posts = array();
     $total_added_posts = 0;
     $total_added_comments = 0;
     $thinkup_users = array();
     $total_added_users = 0;
     $thinkup_links = array();
     $total_links_added = 0;
     $thinkup_likes = array();
     $total_added_likes = 0;
     $profiles = array();
     //efficiency control vars
     $must_process_likes = true;
     $must_process_comments = true;
     $post_comments_added = 0;
     $post_likes_added = 0;
     $comments_difference = false;
     $likes_difference = false;
     $post_dao = DAOFactory::getDAO('PostDAO');
     foreach ($stream->data as $index => $p) {
         $post_id = explode("_", $p->id);
         $post_id = $post_id[1];
         $this->logger->logInfo("Beginning to process " . $post_id . ", post " . ($index + 1) . " of " . count($stream->data) . " on page " . $page_number, __METHOD__ . ',' . __LINE__);
         // stream can contain posts from multiple users.  get profile for this post
         $profile = null;
         if (!empty($profiles[$p->from->id])) {
             $profile = $profiles[$p->from->id];
         } else {
             $profile = $this->fetchUser($p->from->id, 'Post stream', true);
             $profiles[$p->from->id] = $profile;
         }
         //Assume profile comments are private and page posts are public
         $is_protected = $network == 'facebook' ? 1 : 0;
         //Get likes count
         $likes_count = 0;
         //Normalize likes to be one array
         if (isset($p->likes)) {
             $likes_count = $p->likes->summary->total_count;
             $p->likes = $this->normalizeLikes($p->likes);
         }
         // Normalize comments to be one array
         $comments_count = 0;
         if (isset($p->comments)) {
             $comments_count = $p->comments->summary->total_count;
             $p->comments = $this->normalizeComments($p->comments);
         }
         $post_in_storage = $post_dao->getPost($post_id, $network);
         //Figure out if we have to process likes and comments
         if (isset($post_in_storage)) {
             $this->logger->logInfo("Post " . $post_id . " already in storage", __METHOD__ . ',' . __LINE__);
             if ($post_in_storage->favlike_count_cache >= $likes_count) {
                 $must_process_likes = false;
                 $this->logger->logInfo("Already have " . $likes_count . " like(s) for post " . $post_id . " in storage; skipping like processing", __METHOD__ . ',' . __LINE__);
             } else {
                 $likes_difference = $likes_count - $post_in_storage->favlike_count_cache;
                 $this->logger->logInfo($likes_difference . " new like(s) to process for post " . $post_id, __METHOD__ . ',' . __LINE__);
             }
             if (isset($p->comments->summary->total_count)) {
                 if ($post_in_storage->reply_count_cache >= $p->comments->summary->total_count) {
                     $must_process_comments = false;
                     $this->logger->logInfo("Already have " . $post_in_storage->reply_count_cache . " comment(s) for post " . $post_id . "; skipping comment processing", __METHOD__ . ',' . __LINE__);
                 } else {
                     $comments_difference = $p->comments->summary->total_count - $post_in_storage->reply_count_cache;
                     $this->logger->logInfo($comments_difference . " new comment(s) of " . $p->comments->summary->total_count . " total to process for post " . $post_id, __METHOD__ . ',' . __LINE__);
                 }
             }
         } else {
             $this->logger->logInfo("Post " . $post_id . " not in storage", __METHOD__ . ',' . __LINE__);
         }
         if (!isset($profile)) {
             $this->logger->logError("No profile set", __METHOD__ . ',' . __LINE__);
         } else {
             if (!isset($post_in_storage)) {
                 $this->logger->logInfo("Post " . $post_id . " has " . $comments_count . " comments", __METHOD__ . ',' . __LINE__);
                 $post_to_process = array("post_id" => $post_id, "author_username" => $profile->username, "author_fullname" => $profile->username, "author_avatar" => $profile->avatar, "author_user_id" => $p->from->id, "post_text" => isset($p->message) ? $p->message : '', "pub_date" => $p->created_time, "favlike_count_cache" => $likes_count, "reply_count_cache" => $comments_count, "in_reply_to_user_id" => isset($p->to->data[0]->id) ? $p->to->data[0]->id : '', "in_reply_to_post_id" => '', "source" => '', 'network' => $network, 'is_protected' => $is_protected, 'location' => '');
                 $new_post_key = $this->storePostAndAuthor($post_to_process, "Owner stream");
                 if ($new_post_key !== false) {
                     $total_added_posts++;
                 }
                 if (isset($p->source) || isset($p->link)) {
                     // there's a link to store
                     $link_url = isset($p->source) ? $p->source : $p->link;
                     $link = new Link(array("url" => $link_url, "expanded_url" => '', "image_src" => isset($p->picture) ? $p->picture : '', "caption" => isset($p->caption) ? $p->caption : '', "description" => isset($p->description) ? $p->description : '', "title" => isset($p->name) ? $p->name : '', "post_key" => $new_post_key));
                     array_push($thinkup_links, $link);
                 }
                 $total_links_addded = $total_links_added + $this->storeLinks($thinkup_links);
                 if ($total_links_added > 0) {
                     $this->logger->logUserSuccess("Collected {$total_links_added} new links", __METHOD__ . ',' . __LINE__);
                 }
                 //free up memory
                 $thinkup_links = array();
             } else {
//.........这里部分代码省略.........

 /**
  *  Collects and stores information about the users videos from the YouTube APIs
  *  Currently collects and stores:
  *   - Basic video information such as title, author, description and location the video was shot in (if available)
  *  - Replies to the video
  *      -- This uses the YouTube V2 API due to the V3 API currently not supporting replies
  *   - All time counts for likes, dislikes, views, average view duration, average view percentage, favorites added,
  *   favorites removed, shares, subscribers gained and subscribers lost
  *     -- The totals for these are stored in the videos table, a history of these totals is stored in the
  *     count_history table under a type of [metric]_all_time and date of todays date
  *    -- A record of these metrics for indivdual days is also saved in the count_history table under a type of
  *    [metric] and date of the day the metric represents usually two days ago due to a delay in the availability
  *      of data from the Analytics API
  * @return null
  */
 public function fetchInstanceUserVideos()
 {
     $video_dao = DAOFactory::getDAO('VideoDAO');
     $user_dao = DAOFactory::getDAO('UserDAO');
     $post_dao = DAOFactory::getDAO('PostDAO');
     $count_history_dao = DAOFactory::getDAO('CountHistoryDAO');
     $instance_dao = DAOFactory::getDAO('InstanceDAO');
     // Get the users upload playlist ID
     $fields_for_ids = array('part' => 'contentDetails,statistics', 'mine' => 'true');
     $various_ids = $this->youtube_api_accessor->apiRequest('channels', $this->access_token, $fields_for_ids);
     $upload_id = $various_ids->items[0]->contentDetails->relatedPlaylists->uploads;
     // Also get their channel ID as we'll need it later on
     $channel_id = $various_ids->items[0]->id;
     // There are some required attributes about the author that YouTube doesn't return for the videos so we need
     // to query the database for them
     $author_details = $user_dao->getDetails($this->instance->network_user_id, 'youtube');
     $user_id = $this->instance->network_user_id;
     // Update the users subscriber count
     $subscriber_count = $various_ids->items[0]->statistics->subscriberCount;
     $author_details->follower_count = $subscriber_count;
     $user_dao->updateUser($author_details);
     $count_history_dao->insert($user_id, 'youtube', $subscriber_count, null, 'subscriber_count');
     // Calculate the time at which we should stop fetching videos
     $end_time = time() + $this->max_crawl_time;
     // Keep track of if we finished the crawl early due to timing out
     $had_to_finish_early = false;
     // Check if we already loaded all the old posts for this user
     $archive_loaded = $instance->is_archive_loaded_posts;
     // If the archive isn't loaded yet keep track of how many times we've tried to load it
     if (!$archive_loaded) {
         $attempts = $count_history_dao->getLatestCountByNetworkUserIDAndType($user_id, 'youtube', 'youtube_archive_attempts');
         if ($attempts == null) {
             // If this is the first crawler run
             $attempts['count'] = 0;
         }
         $attempts['count']++;
         $count_history_dao->insert($user_id, 'youtube', $attempts['count'], null, 'youtube_archive_attempts', null);
     }
     // Now page through their videos collecting the data
     $videos_fields = array('part' => 'snippet', 'maxResults' => '25', 'playlistId' => $upload_id, 'pageToken' => null);
     // We may get multiple pages
     do {
         // This is a page of IDs of videos the user has uploaded
         $user_videos = $this->youtube_api_accessor->apiRequest('playlistItems', $this->access_token, $videos_fields);
         // For each video store the relevant details about it
         foreach ($user_videos->items as $video) {
             // If we've hit the max crawl time stop
             if (time() >= $end_time) {
                 $this->logger->logUserInfo("Stopping this service users crawl because it has exceeded max time of " . $this->max_crawl_time / 60 . " minute(s). ", __METHOD__ . ',' . __LINE__);
                 $had_to_finish_early = true;
                 break 2;
             }
             $video_id = $video->snippet->resourceId->videoId;
             // Get the title, description, likes, dislikes, views, and details about where
             // the video was taken from the data API
             $video_fields = array('id' => $video_id, 'part' => 'statistics,id,snippet,recordingDetails,status');
             $video_details = $this->youtube_api_accessor->apiRequest('videos', $this->access_token, $video_fields);
             $item = $video_details->items[0];
             // Check we haven't used up our quota
             if (isset($video_details->error)) {
                 $this->logger->logError('Error querying YouTube Data API V3 ', __METHOD__ . ',' . __LINE__);
                 break;
             }
             $video_attributes['post_text'] = $item->snippet->title;
             $video_attributes['description'] = $item->snippet->description;
             $video_attributes['likes'] = $item->statistics->likeCount;
             $video_attributes['dislikes'] = $item->statistics->dislikeCount;
             $video_attributes['views'] = $item->statistics->viewCount;
             // Keep track of these all time counts
             $count_history_dao->insert($user_id, 'youtube', $video_attributes['likes'], $video_id, 'likes_all_time');
             $count_history_dao->insert($user_id, 'youtube', $video_attributes['dislikes'], $video_id, 'dislikes_all_time');
             $count_history_dao->insert($user_id, 'youtube', $video_attributes['views'], $video_id, 'views_all_time');
             $video_attributes['pub_date'] = $item->snippet->publishedAt;
             $video_attributes['post_id'] = $item->id;
             $video_attributes['location'] = $item->recordingDetails->locationDescription;
             $video_attributes['place'] = $item->recordingDetails->locationDescription;
             if (isset($item->recordingDetails->latitude)) {
                 $video_attributes['geo'] = $item->recordingDetails->latitude . "," . $item->recordingDetails->longitude;
             }
             $video_attributes['is_protected'] = self::determinePrivacyStatus($item->status->privacyStatus);
             $today = date('Y-m-d');
             $upload_date = substr($item->snippet->publishedAt, 0, 10);
             // Get the favourites added, favourites removed, shares, subscribers gained, subscribers lost
             // estimated minuites watched, average view duration, average view percentage
             $analytics_fields = array('ids' => 'channel==' . $channel_id, 'start-date' => $upload_date, 'end-date' => $today, 'metrics' => 'favoritesAdded,favoritesRemoved,shares,subscribersGained,subscribersLost,' . 'estimatedMinutesWatched,averageViewDuration,averageViewPercentage,views,likes,dislikes', 'filters' => 'video==' . $video_id);
//.........这里部分代码省略.........

 public function updateContext($user_id, $creator_id, $data, $context)
 {
     if (!$user_id || !$creator_id || !isset($data)) {
         $message = "Stories->updateContext() missing args";
         Logger::logError($message);
         throw new Exception($message);
     }
     //print_r($data);
     $db = Database::obtain();
     $data = $db->escape($data);
     $data = sanitize($data);
     $creator_id = $db->escape($creator_id);
     $creator_id = sanitize($creator_id);
     $context = $db->escape($context);
     $context = sanitize($context);
     $user_id = $db->escape($user_id);
     $user_id = sanitize($user_id);
     $sql = "UPDATE `users` SET `" . $context . "` = '" . $data . "' WHERE `id`='" . $db->escape($user_id) . "'";
     $db->query($sql);
 }

 /**
  * cleanUpMissedFavsUnFavs  pages back through the older pages of favs, checking for favs that are not yet in
  * the database, as well as favs that were added to the db but are no longer returned by Twitter's API.
  * However, that latter calculation, for un-fav'd tweets, is currently not reliable due to a bug on Twitter's end,
  * and so such tweets are not currently removed from the database.
  * Due to the same issue with the API, it's not clear whether all favs of older tweets are going to be actually
  * returned from Twitter (that is, it is currently not returning some actually-favorited tweets in a given range).
  * So, we may miss some older tweets that were in fact favorited, until Twitter fixes this.
  * The number of pages to page back for each run of the crawler is set by favs_cleanup_pages option.
  */
 public function cleanUpMissedFavsUnFavs()
 {
     // first, check that we have the resources to do work
     if (!($this->api->available && $this->api->available_api_calls_for_crawler)) {
         $this->logger->logInfo("terminating cleanUpMissedFavsUnFavs-- no API calls available", __METHOD__ . ',' . __LINE__);
         return true;
     }
     $this->logger->logInfo("In cleanUpMissedFavsUnFavs", __METHOD__ . ',' . __LINE__);
     $this->logger->logInfo("User id: " . $this->user->user_id . "\n", __METHOD__ . ',' . __LINE__);
     $fcount = 0;
     $favs_cleanup_pages = 1;
     // default number of pages to process each time the crawler runs
     // get plugin option value if it exists & is positive int, otherwise use default
     $topt = $this->twitter_options;
     if (isset($topt['favs_cleanup_pages'])) {
         $conf_favs_cleanup_pages = $topt['favs_cleanup_pages']->option_value;
         $this->logger->logInfo("conf_favs_cleanup_pages: {$conf_favs_cleanup_pages} ", __METHOD__ . ',' . __LINE__);
         if (is_integer((int) $conf_favs_cleanup_pages) && $conf_favs_cleanup_pages > 0) {
             $favs_cleanup_pages = $conf_favs_cleanup_pages;
         }
     }
     $this->logger->logInfo("favs_cleanup_pages: {$favs_cleanup_pages} ", __METHOD__ . ',' . __LINE__);
     $fpd = DAOFactory::getDAO('FavoritePostDAO');
     $pagesize = 20;
     // number of favs per page retrieved from the API call... (tbd: any way to get
     //this from the API?)
     // get 'favs_older_pages' plugin option value if it exists & is pos. int.  Use it to calculate default start
     // page if set, otherwise use default value.
     $default_start_page = 2;
     $topt = $this->twitter_options;
     if (isset($topt['favs_older_pages'])) {
         $conf_older_favs_pages = $topt['favs_older_pages']->option_value;
         if (is_integer((int) $conf_older_favs_pages) && $conf_older_favs_pages > 0) {
             $default_start_page = $conf_older_favs_pages + 1;
         }
     }
     $this->logger->logInfo("default start page: {$default_start_page} ", __METHOD__ . ',' . __LINE__);
     $last_page_of_favs = round($this->api->archive_limit / $pagesize);
     $last_unfav_page_checked = $this->instance->last_unfav_page_checked;
     $start_page = $last_unfav_page_checked > 0 ? $last_unfav_page_checked + 1 : $default_start_page;
     $this->logger->logInfo("start page: {$start_page}, with {$favs_cleanup_pages} cleanup pages", __METHOD__ . ',' . __LINE__);
     $curr_favs_count = $this->user->favorites_count;
     $count = 0;
     $page = $start_page;
     while ($count < $favs_cleanup_pages && $this->api->available && $this->api->available_api_calls_for_crawler) {
         // get the favs from that page
         try {
             list($tweets, $cURL_status, $twitter_data) = $this->getFavsPage($page);
         } catch (APICallLimitExceededException $e) {
             break;
         }
         if ($cURL_status != 200 || $tweets == -1) {
             $this->logger->logError("Error parsing favs. Twitter data: " . $twitter_data . " cURL status: " . $cURL_status, __METHOD__ . ',' . __LINE__);
         }
         if (sizeof($tweets) == 0) {
             // then done paging backwards through the favs.
             // reset pointer so that we start at the recent favs again next time through.
             $this->instance->last_unfav_page_checked = 0;
             break;
         }
         $min_tweet = $tweets[sizeof($tweets) - 1]['post_id'];
         $max_tweet = $tweets[0]['post_id'];
         $this->logger->logInfo("in cleanUpUnFavs, page {$page} min and max: {$min_tweet}, {$max_tweet}", __METHOD__ . ',' . __LINE__);
         foreach ($tweets as $fav) {
             $fav['network'] = 'twitter';
             // check whether the tweet is in the db-- if not, add it.
             if ($fpd->addFavorite($this->user->user_id, $fav) > 0) {
                 URLProcessor::processPostURLs($fav['post_text'], $fav['post_id'], 'twitter', $this->logger);
                 $this->logger->logInfo("added fav " . $fav['post_id'], __METHOD__ . ',' . __LINE__);
                 $fcount++;
             } else {
                 $status_message = "have already stored fav " . $fav['post_id'];
                 $this->logger->logDebug($status_message, __METHOD__ . ',' . __LINE__);
             }
         }
         // now for each favorited tweet in the database within the fetched range, check whether it's still
         // favorited. This part of the method is currently disabled due to issues with the Twitter API, which
         // is not returning all of the favorited tweets any more.  So, the fact that a previously-archived
         // tweet is not returned, no longer indicates that it was un-fav'd.
         // The method still IDs the 'missing' tweets, but no longer deletes them.  We may want to get rid of
         //  this check altogether at some point.
         $fposts = $fpd->getAllFavoritePostsUpperBound($this->user->user_id, 'twitter', $pagesize, $max_tweet + 1);
         foreach ($fposts as $old_fav) {
             $old_fav_id = $old_fav->post_id;
             if ($old_fav_id < $min_tweet) {
                 $this->logger->logInfo("Old fav {$old_fav_id} out of range ", __METHOD__ . ',' . __LINE__);
                 break;
                 // all the rest will be out of range also then
             }
             // look for the old_fav_id in the array of fetched favs
//.........这里部分代码省略.........

 protected static function logError($message, $category)
 {
     if (class_exists('Logger')) {
         Logger::logError($message, $category);
     }
 }

 /**
  * Delete cache
  *
  * @param	string	$uri	URI string
  * @return	bool
  */
 public function delete_cache($uri = '')
 {
     $cache_path = Core::$tempDir . DS . 'Output' . DS;
     if (!is_dir($cache_path)) {
         Logger::logError('Unable to find cache path: ' . $cache_path);
         return FALSE;
     }
     if (empty($uri)) {
         $uri = $this->uri->uri_string();
         if (($cache_query_string = $this->config->cache->cache_query_string) && !empty($_SERVER['QUERY_STRING'])) {
             if (is_array($cache_query_string)) {
                 $uri .= '?' . http_build_query(array_intersect_key($_GET, array_flip($cache_query_string)));
             } else {
                 $uri .= '?' . $_SERVER['QUERY_STRING'];
             }
         }
     }
     $cache_path .= md5($this->config->mainbase_url . $this->config->main->index_page . ltrim($uri, '/'));
     if (!@unlink($cache_path)) {
         Logger::logError('Unable to delete cache file for ' . $uri);
         return FALSE;
     }
     return TRUE;
 }