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add multiprocess update daemon

This commit is contained in:
Andrew Dolgov 2008-01-23 10:19:36 +01:00
parent d476113752
commit 02008cb19a
3 changed files with 226 additions and 3 deletions
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13
functions.php
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@ -468,12 +468,19 @@
_debug("update_rss_feed: start");
}
$result = db_query($link, "SELECT id,update_interval,auth_login,auth_pass,cache_images
FROM ttrss_feeds WHERE id = '$feed'");
if (DB_TYPE == "pgsql") {
$updstart_thresh_qpart = "(ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started >= NOW() - INTERVAL '120 seconds')";
} else {
$updstart_thresh_qpart = "(ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started >= DATE_SUB(NOW(), INTERVAL 120 SECOND))";
}
$result = db_query($link, "SELECT id,update_interval,auth_login,
auth_pass,cache_images
FROM ttrss_feeds WHERE id = '$feed' AND $updstart_thresh_qpart");
if (db_num_rows($result) == 0) {
if (defined('DAEMON_EXTENDED_DEBUG') || $_GET['xdebug']) {
_debug("update_rss_feed: feed $feed [$feed_url] NOT FOUND");
_debug("update_rss_feed: feed $feed [$feed_url] NOT FOUND/SKIPPED");
}
return;
}

55
update_daemon2.php Normal file
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@ -0,0 +1,55 @@
#!/usr/bin/php
<?php
// This is an experimental multiprocess update daemon
// It consists of the master server (this file) and
// client batch script (update_daemon2_client.php) which
// should only be run by the server process
declare(ticks = 1);
require "config.php";
define('MAX_JOBS', 2);
define('CLIENT_PROCESS', './update_daemon2_client.php SRV_RUN_OK');
define('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL);
$running_jobs = 0;
$last_checkpoint = -1;
function sigchld_handler($signal) {
global $running_jobs;
if ($running_jobs > 0) $running_jobs--;
print posix_getpid() . ": SIGCHLD received, jobs left: $running_jobs\n";
pcntl_waitpid(-1, $status, WNOHANG);
}
pcntl_signal(SIGCHLD, 'sigchld_handler');
while (true) {
$next_spawn = $last_checkpoint + SPAWN_INTERVAL - time();
print "[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec\n";
if ($last_checkpoint + SPAWN_INTERVAL < time()) {
for ($j = $running_jobs; $j < MAX_JOBS; $j++) {
print "[MASTER] spawning client $j...";
$pid = pcntl_fork();
if ($pid == -1) {
die("fork failed!\n");
} else if ($pid) {
$running_jobs++;
print "OK [$running_jobs]\n";
} else {
pcntl_signal(SIGCHLD, SIG_IGN);
passthru(CLIENT_PROCESS);
exit(0);
}
}
$last_checkpoint = time();
}
sleep(1);
}
?>

161
update_daemon2_client.php Normal file
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@ -0,0 +1,161 @@
#!/usr/bin/php
<?php
// define('DEFAULT_ERROR_LEVEL', E_ALL);
define('DEFAULT_ERROR_LEVEL', E_ERROR | E_WARNING | E_PARSE);
if ($argv[1] != "SRV_RUN_OK") {
die("This script should be started by update_daemon2.php.\n");
}
declare(ticks = 1);
define('MAGPIE_CACHE_DIR', '/var/tmp/magpie-ttrss-cache-daemon');
define('SIMPLEPIE_CACHE_DIR', '/var/tmp/simplepie-ttrss-cache-daemon');
define('DISABLE_SESSIONS', true);
require_once "version.php";
if (strpos(VERSION, ".99") !== false) {
define('DAEMON_EXTENDED_DEBUG', true);
}
define('PURGE_INTERVAL', 3600); // seconds
require_once "sanity_check.php";
require_once "config.php";
if (!ENABLE_UPDATE_DAEMON) {
die("Please enable option ENABLE_UPDATE_DAEMON in config.php\n");
}
require_once "db.php";
require_once "db-prefs.php";
require_once "functions.php";
require_once "magpierss/rss_fetch.inc";
error_reporting(DEFAULT_ERROR_LEVEL);
function sigalrm_handler() {
die("received SIGALRM, hang in feed update?\n");
}
pcntl_signal(SIGALRM, sigalrm_handler);
$link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
if (!$link) {
if (DB_TYPE == "mysql") {
print mysql_error();
}
// PG seems to display its own errors just fine by default.
return;
}
if (DB_TYPE == "pgsql") {
pg_query("set client_encoding = 'utf-8'");
pg_set_client_encoding("UNICODE");
} else {
if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
db_query($link, "SET NAMES " . MYSQL_CHARSET);
// db_query($link, "SET CHARACTER SET " . MYSQL_CHARSET);
}
}
$last_purge = 0;
// if (!make_stampfile('update_daemon.stamp')) {
// print "error: unable to create stampfile";
// die;
// }
if (time() - $last_purge > PURGE_INTERVAL) {
_debug("Purging old posts (random 30 feeds)...");
global_purge_old_posts($link, true, 30);
$last_purge = time();
}
// Process all other feeds using last_updated and interval parameters
$random_qpart = sql_random_function();
if (DAEMON_UPDATE_LOGIN_LIMIT > 0) {
if (DB_TYPE == "pgsql") {
$login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
} else {
$login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
}
} else {
$login_thresh_qpart = "";
}
if (DB_TYPE == "pgsql") {
$update_limit_qpart = "AND ttrss_feeds.last_updated < NOW() - INTERVAL '".(DAEMON_SLEEP_INTERVAL*2)." seconds'";
} else {
$update_limit_qpart = "AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ".(DAEMON_SLEEP_INTERVAL*2)." SECOND)";
}
if (DB_TYPE == "pgsql") {
$updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started >= NOW() - INTERVAL '120 seconds')";
} else {
$updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started >= DATE_SUB(NOW(), INTERVAL 120 SECOND))";
}
$result = db_query($link, "SELECT feed_url,ttrss_feeds.id,owner_uid,
SUBSTRING(last_updated,1,19) AS last_updated,
update_interval
FROM
ttrss_feeds,ttrss_users
WHERE
ttrss_users.id = owner_uid $login_thresh_qpart $update_limit_qpart
$updstart_thresh_qpart
ORDER BY $random_qpart DESC LIMIT " . DAEMON_FEED_LIMIT);
$user_prefs_cache = array();
_debug(sprintf("Scheduled %d feeds to update...\n", db_num_rows($result)));
while ($line = db_fetch_assoc($result)) {
$upd_intl = $line["update_interval"];
$user_id = $line["owner_uid"];
if (!$upd_intl || $upd_intl == 0) {
if (!$user_prefs_cache[$user_id]['DEFAULT_UPDATE_INTERVAL']) {
$upd_intl = get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $user_id);
$user_prefs_cache[$user_id]['DEFAULT_UPDATE_INTERVAL'] = $upd_intl;
} else {
$upd_intl = $user_prefs_cache[$user_id]['DEFAULT_UPDATE_INTERVAL'];
}
}
if ($upd_intl < 0) {
# print "Updates disabled.\n";
continue;
}
_debug("Feed: " . $line["feed_url"] . ", " . $line["last_updated"]);
// _debug(sprintf("\tLU: %d, INTL: %d, UID: %d) ",
// time() - strtotime($line["last_updated"]), $upd_intl*60, $user_id));
if (!$line["last_updated"] ||
time() - strtotime($line["last_updated"]) > ($upd_intl * 60)) {
_debug("Updating...");
pcntl_alarm(300);
update_rss_feed($link, $line["feed_url"], $line["id"], true);
pcntl_alarm(0);
sleep(1); // prevent flood (FIXME make this an option?)
} else {
_debug("Update not needed.");
}
}
if (DAEMON_SENDS_DIGESTS) send_headlines_digests($link);
db_close($link);
?>