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cache downloaded feed data to minimize network access

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This commit is contained in:
Andrew Dolgov 2013-03-29 11:31:10 +04:00
parent 412865b99f
commit f074ffe945
1 changed files with 47 additions and 34 deletions
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81
include/rssfuncs.php
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@ -119,7 +119,7 @@
AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
$login_thresh_qpart $update_limit_qpart
$updstart_thresh_qpart
ORDER BY $random_qpart $query_limit");
ORDER BY feed_url,$random_qpart $query_limit");
$user_prefs_cache = array();
@ -149,7 +149,6 @@
if($debug) _debug("Feed: " . $line["feed_url"] . ", " . $line["last_updated"]);
update_rss_feed($link, $line["id"], true);
sleep(1); // prevent flood (FIXME make this an option?)
}
@ -202,36 +201,44 @@
$feed = db_escape_string($link, $feed);
/* if ($auth_login && $auth_pass ){
$url_parts = array();
preg_match("/(^[^:]*):\/\/(.*)/", $fetch_url, $url_parts);
if ($url_parts[1] && $url_parts[2]) {
$fetch_url = $url_parts[1] . "://$auth_login:$auth_pass@" . $url_parts[2];
}
} */
if ($override_url)
$fetch_url = $override_url;
if ($debug_enabled) {
_debug("update_rss_feed: fetching [$fetch_url]...");
}
// Ignore cache if new feed or manual update.
$cache_age = (is_null($last_updated) || $last_updated == '1970-01-01 00:00:00') ?
-1 : get_feed_update_interval($link, $feed) * 60;
$simplepie_cache_dir = CACHE_DIR . "/simplepie";
if ($override_url) $fetch_url = $override_url;
$date_feed_processed = date('Y-m-d H:i');
if (!is_dir($simplepie_cache_dir)) {
mkdir($simplepie_cache_dir);
$cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".xml";
// Ignore cache if new feed or manual update.
$cache_age = ($no_cache || is_null($last_updated) || $last_updated == '1970-01-01 00:00:00') ?
30 : get_feed_update_interval($link, $feed) * 60;
if ($debug_enabled) {
_debug("update_rss_feed: cache filename: $cache_filename exists: " . file_exists($cache_filename));
_debug("update_rss_feed: cache age: $cache_age; no cache: $no_cache");
}
$feed_data = fetch_file_contents($fetch_url, false,
$auth_login, $auth_pass, false, $no_cache ? 15 : 45);
$cached_feed_data_hash = false;
if (file_exists($cache_filename) &&
is_readable($cache_filename) &&
!$auth_login && !$auth_pass &&
filemtime($cache_filename) > time() - $cache_age) {
if ($debug_enabled) {
_debug("update_rss_feed: using local cache.");
}
$feed_data = file_get_contents($cache_filename);
$cached_feed_data_hash = sha1($feed_data);
}
if (!$feed_data) {
if ($debug_enabled) {
_debug("update_rss_feed: fetching [$fetch_url]...");
}
$feed_data = fetch_file_contents($fetch_url, false,
$auth_login, $auth_pass, false, $no_cache ? 15 : 45);
}
if (!$feed_data) {
global $fetch_last_error;
@ -249,6 +256,18 @@
return;
}
// cache data for later
if (!$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
if (sha1($feed_data) != $cached_feed_data_hash) {
if ($debug_enabled) {
_debug("update_rss_feed: saving $cache_filename");
}
@file_put_contents($cache_filename, $feed_data);
}
}
$pluginhost = new PluginHost($link);
$pluginhost->set_debug($debug_enabled);
$user_plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
@ -272,19 +291,13 @@
$rss->sanitize = new SanitizeDummy();
$rss->set_output_encoding('UTF-8');
$rss->set_raw_data($feed_data);
$rss->enable_cache(false);
if ($debug_enabled) {
_debug("feed update interval (sec): " .
get_feed_update_interval($link, $feed)*60);
}
$rss->enable_cache(!$no_cache);
if (!$no_cache) {
$rss->set_cache_location($simplepie_cache_dir);
$rss->set_cache_duration($cache_age);
}
@$rss->init();
// print_r($rss);