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update_daemon2: import single-file version from landure

This commit is contained in:
Andrew Dolgov 2008-01-23 17:19:32 +01:00
parent 73d3b9b1f6
commit ffa7cbae80
2 changed files with 206 additions and 173 deletions
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215
update_daemon2.php
View File

@ -1,23 +1,50 @@
#!/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
// This is an experimental multiprocess update daemon.
// Some configurable variable may be found below.
// define('DEFAULT_ERROR_LEVEL', E_ALL);
define('DEFAULT_ERROR_LEVEL', E_ERROR | E_WARNING | E_PARSE);
declare(ticks = 1);
require_once "config.php";
require_once "functions.php";
define('MAGPIE_CACHE_DIR', '/var/tmp/magpie-ttrss-cache-daemon');
define('SIMPLEPIE_CACHE_DIR', '/var/tmp/simplepie-ttrss-cache-daemon');
define('DISABLE_SESSIONS', true);
define('MAX_JOBS', 2);
define('CLIENT_PROCESS', './update_daemon2_client.php SRV_RUN_OK');
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";
define('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL);
define('PHP_EXECUTABLE', '/usr/bin/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);
$running_jobs = 0;
$last_checkpoint = -1;
function sigalrm_handler() {
die("received SIGALRM, hang in feed update?\n");
}
function sigchld_handler($signal) {
global $running_jobs;
if ($running_jobs > 0) $running_jobs--;
@ -30,6 +57,7 @@
die("Received SIGINT. Exiting.\n");
}
pcntl_signal(SIGALRM, 'sigalrm_handler');
pcntl_signal(SIGCHLD, 'sigchld_handler');
pcntl_signal(SIGINT, 'sigint_handler');
@ -38,6 +66,11 @@
"Maybe another daemon is already running.\n");
}
if (file_is_locked("update_daemon.lock")) {
die("error: Can't create lockfile. ".
"Maybe another daemon is already running.\n");
}
if (!pcntl_fork()) {
$lock_handle = make_lockfile("update_daemon.lock");
@ -49,6 +82,21 @@
while (true) { sleep(100); }
}
// Testing database connection.
// It is unnecessary to start the fork loop if database is not ok.
$link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
if (!$link) {
if (DB_TYPE == "mysql") {
print mysql_error();
}
// PG seems to display its own errors just fine by default.
return;
}
db_close($link);
while (true) {
$next_spawn = $last_checkpoint + SPAWN_INTERVAL - time();
@ -70,7 +118,156 @@
} else {
pcntl_signal(SIGCHLD, SIG_IGN);
pcntl_signal(SIGINT, SIG_DFL);
passthru(PHP_EXECUTABLE . ' ' . CLIENT_PROCESS);
// ****** Updating RSS code *******
// Only run in fork process.
$start_timestamp = time();
$link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
if (!$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);
}
}
// We disable stamp file, since it is of no use in a multiprocess update.
// not really, tho for the time being -fox
if (!make_stampfile('update_daemon.stamp')) {
print "warning: unable to create stampfile";
}
// $last_purge = 0;
// if (time() - $last_purge > PURGE_INTERVAL) {
// FIXME : $last_purge is of no use in a multiprocess update.
// FIXME : We ALWAYS purge old posts.
_debug("Purging old posts (random 30 feeds)...");
global_purge_old_posts($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)));
// Here is a little cache magic in order to minimize risk of double feed updates.
$feeds_to_update = array();
while ($line = db_fetch_assoc($result)) {
$feeds_to_update[$line['id']] = $line;
}
// We update the feed last update started date before anything else.
// There is no lag due to feed contents downloads
// It prevent an other process to update the same feed.
$feed_ids = array_keys($feeds_to_update);
if($feed_ids) {
db_query($link, sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
WHERE id IN (%s)", implode(',', $feed_ids)));
}
while ($line = array_pop($feeds_to_update)) {
$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);
print "Elapsed time: " . (time() - $start_timestamp) . " second(s)\n";
db_close($link);
// We are in a fork.
// We wait a little before exiting to avoid to be faster than our parent process.
sleep(1);
// We exit in order to avoid fork bombing.
exit(0);
}
}

164
update_daemon2_client.php
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@ -1,164 +0,0 @@
#!/usr/bin/php
<?php
// define('DEFAULT_ERROR_LEVEL', E_ALL);
define('DEFAULT_ERROR_LEVEL', E_ERROR | E_WARNING | E_PARSE);
$start_timestamp = time();
if ($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 "warning: unable to create stampfile";
}
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);
print "Elapsed time: " . (time() - $start_timestamp) . " second(s)\n";
db_close($link);
?>