}
$items = [];
+ $creation_dates = [];
// Limit the number of items that are about to be fetched
$total_items = ($entries->length - 1);
$item["parent-uri"] = $item["uri"];
- if (!$dryRun) {
- $condition = ["`uid` = ? AND `uri` = ? AND `network` IN (?, ?)",
- $importer["uid"], $item["uri"], Protocol::FEED, Protocol::DFRN];
- $previous = Item::selectFirst(['id'], $condition);
- if (DBA::isResult($previous)) {
- Logger::info("Item with uri " . $item["uri"] . " for user " . $importer["uid"] . " already existed under id " . $previous["id"]);
- continue;
- }
- }
-
$item["title"] = XML::getFirstNodeValue($xpath, 'atom:title/text()', $entry);
if (empty($item["title"])) {
$item["edited"] = $updated;
}
+ if (!$dryRun) {
+ $condition = ["`uid` = ? AND `uri` = ? AND `network` IN (?, ?)",
+ $importer["uid"], $item["uri"], Protocol::FEED, Protocol::DFRN];
+ $previous = Item::selectFirst(['id', 'created'], $condition);
+ if (DBA::isResult($previous)) {
+ // Use the creation date when the post had been stored. It can happen this date changes in the feed.
+ $creation_dates[] = $previous['created'];
+ Logger::info("Item with uri " . $item["uri"] . " for user " . $importer["uid"] . " already existed under id " . $previous["id"]);
+ continue;
+ }
+ $creation_dates[] = DateTimeFormat::utc($item['created']);
+ }
+
$creator = XML::getFirstNodeValue($xpath, 'author/text()', $entry);
if (empty($creator)) {
}
}
+ if (!$dryRun) {
+ self::adjustPollFrequency($contact, $creation_dates);
+ }
+
return ["header" => $author, "items" => $items];
}
+ /**
+ * Automatically adjust the poll frequency according to the post frequency
+ *
+ * @param array $contact
+ * @param array $creation_dates
+ * @return void
+ */
+ private static function adjustPollFrequency(array $contact, array $creation_dates)
+ {
+ if (($contact['priority'] > 3) || ($contact['network'] != Protocol::FEED)) {
+ Logger::info('Contact is no feed or has a low priority, skip.', ['id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url'], 'priority' => $contact['priority'], 'network' => $contact['network']]);
+ return;
+ }
+
+ if (!empty($creation_dates)) {
+ // Count the post frequency and the earliest and latest post date
+ $frequency = [];
+ $oldest = time();
+ $newest = 0;
+ $oldest_date = $newest_date = '';
+
+ foreach ($creation_dates as $date) {
+ $timestamp = strtotime($date);
+ $day = intdiv($timestamp, 86400);
+ $hour = $timestamp % 86400;
+
+ // Only have a look at values from the last seven days
+ if (((time() / 86400) - $day) < 7) {
+ if (empty($frequency[$day])) {
+ $frequency[$day] = ['count' => 1, 'low' => $hour, 'high' => $hour];
+ } else {
+ ++$frequency[$day]['count'];
+ if ($frequency[$day]['low'] > $hour) {
+ $frequency[$day]['low'] = $hour;
+ }
+ if ($frequency[$day]['high'] < $hour) {
+ $frequency[$day]['high'] = $hour;
+ }
+ }
+ }
+ if ($oldest > $day) {
+ $oldest = $day;
+ $oldest_date = $date;
+ }
+
+ if ($newest < $day) {
+ $newest = $day;
+ $newest_date = $date;
+ }
+ }
+
+ if (($newest == $oldest) && count($creation_dates) > 1) {
+ Logger::info('Feed has no different creation dates, quitting', ['date' => $newest_date, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
+ return;
+ }
+
+ if (((time() / 86400) - $newest) > 30) {
+ Logger::info('Feed had not posted for a month, switching to daily polling', ['newest' => $newest_date, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
+ $priority = 3; // Poll once a day
+ }
+
+ if (count($creation_dates) == 1) {
+ Logger::info('Feed had posted a single time, switching to daily polling', ['newest' => $newest_date, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
+ $priority = 3; // Poll once a day
+ }
+
+ if (empty($priority) && (($newest - $oldest) > count($creation_dates))) {
+ Logger::info('Less than a post per day, switching to daily polling', ['posts' => count($creation_dates), 'oldest' => $oldest_date, 'newest' => $newest_date, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
+ $priority = 3; // Poll once a day
+ }
+
+ if (empty($priority)) {
+ // Calculate the highest "posts per day" value
+ $max = 1;
+ foreach ($frequency as $entry) {
+ if (($entry['count'] == 1) || ($entry['high'] == $entry['low'])) {
+ continue;
+ }
+
+ // We take the earliest and latest post day and interpolate the number of post per day
+ // that would had been created with this post frequency
+
+ // Assume at least four hours between oldest and newest post per day - should be okay for news outlets
+ $duration = max($entry['high'] - $entry['low'], 14400);
+ $ppd = (86400 / $duration) * $entry['count'];
+ if ($ppd > $max) {
+ $max = $ppd;
+ }
+ }
+
+ if ($max >= 24) {
+ $priority = 0; // Poll with the minimum poll intervall
+ } elseif ($max >= 12) {
+ $priority = 1; // Poll hourly
+ } elseif ($max > 1) {
+ $priority = 2; // Poll twice a day
+ } else {
+ /// @todo In the future we could calculate the days between the posts to set even lower priorities
+ $priority = 3; // Poll once a day
+ }
+ Logger::info('Calculated priority by the posts per day', ['priority' => $priority, 'max' => round($max, 2), 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
+ }
+ } else {
+ Logger::info('No posts, switching to daily polling', ['id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
+ $priority = 3; // Poll once a day
+ }
+
+ if ($contact['priority'] != $priority) {
+ Logger::info('Adjusting priority', ['old' => $contact['priority'], 'new' => $priority, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
+ }
+ }
+
/**
* Convert a tag array to a tag string
*
projects / friendica.git / commitdiff