/**
* Writes status information about the current crawl so that the webserver
* app can use it for its display.
*
* @param array $sites contains the most recently crawled sites
*/
function writeCrawlStatus(&$sites)
{
$crawl_status = array();
$stat_file = CRAWL_DIR . "/schedules/crawl_status.txt";
if (file_exists($stat_file)) {
$crawl_status = unserialize(file_get_contents($stat_file));
if (!isset($crawl_status['CRAWL_TIME']) || $crawl_status['CRAWL_TIME'] != $this->crawl_time) {
$crawl_status = array();
// status of some other crawl
}
}
$crawl_status['MOST_RECENT_FETCHER'] = $this->most_recent_fetcher;
if (isset($sites[self::RECENT_URLS])) {
$crawl_status['MOST_RECENT_URLS_SEEN'] = $sites[self::RECENT_URLS];
}
$crawl_status['CRAWL_TIME'] = $this->crawl_time;
$info_bundle = IndexArchiveBundle::getArchiveInfo(CRAWL_DIR . '/cache/' . self::index_data_base_name . $this->crawl_time);
$index_archive_info = unserialize($info_bundle['DESCRIPTION']);
$crawl_status['COUNT'] = $info_bundle['COUNT'];
$now = time();
$change_in_time = ONE_HOUR + 1;
while (count($this->hourly_crawl_data) > 0 && $change_in_time > ONE_HOUR) {
$least_recent_hourly_pair = array_pop($this->hourly_crawl_data);
$change_in_time = $now - $least_recent_hourly_pair[0];
}
if ($change_in_time <= ONE_HOUR) {
$this->hourly_crawl_data[] = $least_recent_hourly_pair;
}
array_unshift($this->hourly_crawl_data, array($now, $info_bundle['VISITED_URLS_COUNT']));
$crawl_status['VISITED_COUNT_HISTORY'] = $this->hourly_crawl_data;
$crawl_status['VISITED_URLS_COUNT'] = $info_bundle['VISITED_URLS_COUNT'];
$crawl_status['DESCRIPTION'] = $index_archive_info['DESCRIPTION'];
$crawl_status['QUEUE_PEAK_MEMORY'] = memory_get_peak_usage();
file_put_contents($stat_file, serialize($crawl_status), LOCK_EX);
chmod($stat_file, 0777);
crawlLog("End checking for new URLs data memory usage" . memory_get_usage());
crawlLog("The current crawl description is: " . $index_archive_info['DESCRIPTION']);
crawlLog("Number of unique pages so far: " . $info_bundle['VISITED_URLS_COUNT']);
crawlLog("Total urls extracted so far: " . $info_bundle['COUNT']);
if (isset($sites[self::RECENT_URLS])) {
crawlLog("Of these, the most recent urls are:");
foreach ($sites[self::RECENT_URLS] as $url) {
crawlLog("URL: " . iconv("UTF-8", "ISO-8859-1//IGNORE", $url));
}
}
}
/**
* Gets a list of all index archives of crawls that have been conducted
*
* @param bool $return_arc_bundles whether index bundles used for indexing
* arc or other archive bundles should be included in the lsit
* @param bool $return_recrawls whether index archive bundles generated as
* a result of recrawling should be included in the result
* @param array $machine_urls an array of urls of yioop queue servers
* @param bool $cache whether to try to get/set the data to a cache file
*
* @return array available IndexArchiveBundle directories and
* their meta information this meta information includes the time of
* the crawl, its description, the number of pages downloaded, and the
* number of partitions used in storing the inverted index
*/
function getCrawlList($return_arc_bundles = false, $return_recrawls = false, $machine_urls = NULL, $cache = false)
{
if ($machine_urls != NULL && !$this->isSingleLocalhost($machine_urls)) {
$arg = $return_arc_bundles && $return_recrawls ? 3 : ($return_recrawls ? 2 : ($return_arc_bundles ? 1 : 0));
$cache_file = CRAWL_DIR . "/cache/" . self::network_crawllist_base_name . "{$arg}.txt";
if ($cache && file_exists($cache_file) && filemtime($cache_file) + 300 > time()) {
return unserialize(file_get_contents($cache_file));
}
$list_strings = $this->execMachines("getCrawlList", $machine_urls, $arg);
$list = $this->aggregateCrawlList($list_strings);
if ($cache) {
file_put_contents($cache_file, serialize($list));
}
return $list;
}
$list = array();
$dirs = glob(CRAWL_DIR . '/cache/' . self::index_data_base_name . '*', GLOB_ONLYDIR);
foreach ($dirs as $dir) {
$crawl = array();
$pre_timestamp = strstr($dir, self::index_data_base_name);
$crawl['CRAWL_TIME'] = substr($pre_timestamp, strlen(self::index_data_base_name));
$info = IndexArchiveBundle::getArchiveInfo($dir);
$index_info = @unserialize($info['DESCRIPTION']);
$crawl['DESCRIPTION'] = "";
if (!$return_recrawls && isset($index_info[self::CRAWL_TYPE]) && $index_info[self::CRAWL_TYPE] == self::ARCHIVE_CRAWL) {
continue;
} else {
if ($return_recrawls && isset($index_info[self::CRAWL_TYPE]) && $index_info[self::CRAWL_TYPE] == self::ARCHIVE_CRAWL) {
$crawl['DESCRIPTION'] = "RECRAWL::";
}
}
$sched_path = CRAWL_DIR . '/schedules/' . self::schedule_data_base_name . $crawl['CRAWL_TIME'];
$crawl['RESUMABLE'] = false;
if (is_dir($sched_path)) {
$sched_dir = opendir($sched_path);
while (($name = readdir($sched_dir)) !== false) {
$sub_path = "{$sched_path}/{$name}";
if (!is_dir($sub_path) || $name == '.' || $name == '..') {
continue;
}
$sub_dir = opendir($sub_path);
$i = 0;
while (($sub_name = readdir($sub_dir)) !== false && $i < 5) {
if ($sub_name[0] == 'A' && $sub_name[1] == 't') {
$crawl['RESUMABLE'] = true;
break 2;
}
}
closedir($sub_dir);
}
closedir($sched_dir);
}
if (isset($index_info['DESCRIPTION'])) {
$crawl['DESCRIPTION'] .= $index_info['DESCRIPTION'];
}
$crawl['VISITED_URLS_COUNT'] = isset($info['VISITED_URLS_COUNT']) ? $info['VISITED_URLS_COUNT'] : 0;
$crawl['COUNT'] = isset($info['COUNT']) ? $info['COUNT'] : 0;
$crawl['NUM_DOCS_PER_PARTITION'] = isset($info['NUM_DOCS_PER_PARTITION']) ? $info['NUM_DOCS_PER_PARTITION'] : 0;
$crawl['WRITE_PARTITION'] = isset($info['WRITE_PARTITION']) ? $info['WRITE_PARTITION'] : 0;
$list[] = $crawl;
}
if ($return_arc_bundles) {
$dirs = glob(CRAWL_DIR . '/archives/*', GLOB_ONLYDIR);
foreach ($dirs as $dir) {
$crawl = array();
$crawl['CRAWL_TIME'] = crc32($dir);
$crawl['DESCRIPTION'] = "ARCFILE::";
$crawl['ARC_DIR'] = $dir;
$ini_file = "{$dir}/arc_description.ini";
if (!file_exists($ini_file)) {
continue;
} else {
$ini = parse_ini_with_fallback($ini_file);
$crawl['ARC_TYPE'] = $ini['arc_type'];
$crawl['DESCRIPTION'] .= $ini['description'];
}
$crawl['VISITED_URLS_COUNT'] = 0;
$crawl['COUNT'] = 0;
$crawl['NUM_DOCS_PER_PARTITION'] = 0;
$crawl['WRITE_PARTITION'] = 0;
$list[] = $crawl;
}
}
return $list;
}
