From 63b8020969434756a7b966ae615c28bf7680f2f8 Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Tue, 24 Mar 2015 17:09:42 -0700
Subject: more work on expiration, make system limits useful - even in
 retrospect

---
 doc/hidden_configs.bb |  5 ++++-
 include/expire.php    | 34 +++++++++++++++++++++++++---------
 include/items.php     |  6 +++++-
 3 files changed, 34 insertions(+), 11 deletions(-)

diff --git a/doc/hidden_configs.bb b/doc/hidden_configs.bb
index ea945f8d2..c6181b9dd 100644
--- a/doc/hidden_configs.bb
+++ b/doc/hidden_configs.bb
@@ -89,8 +89,11 @@ This document assumes you're an administrator.
         There also exist CLI utilities for performing this operation, which you
         may prefer, especially if you're a large site.
     [b]system > default_expire_days[/b]
-        When creating a new channel, set the default expiration of connections
+        set the default expiration of connections' (matrix/network)
         posts to this number of days.
+	[b]system > expire_limit
+		Don't expire any more than this number of posts per channel per
+		expiration run to keep from exhausting memory. Default 5000.
     [b]system > dlogfile[/b]
         Logfile to use for logging development errors.  Exactly the same as
         logger otherwise.  This isn't magic, and requires your own logging
diff --git a/include/expire.php b/include/expire.php
index 9ef0f7b69..e414a6e7d 100644
--- a/include/expire.php
+++ b/include/expire.php
@@ -38,6 +38,9 @@ function expire_run($argv, $argc){
 	logger('expire: start', LOGGER_DEBUG);
 	
 	$site_expire = get_config('system', 'default_expire_days');
+
+	logger('site_expire: ' . $site_expire);
+
 	if(intval($site_expire)) {
 		$r = q("SELECT channel_id, channel_address, channel_pageflags, channel_expire_days from channel where true");
 	}
@@ -52,15 +55,18 @@ function expire_run($argv, $argc){
 			if($rr['channel_pageflags'] & PAGE_SYSTEM)
 				continue;
 
+			if(intval($site_expire) && (intval($site_expire) < intval($rr['channel_expire_days'])) ||
+				intval($rr['channel_expire_days'] == 0)) {
+				$expire_days = $site_expire;
+			}
+			else {
+				$expire_days = $rr['channel_expire_days'];
+			}
+
+
 			// if the site expiration is non-zero and less than person expiration, use that
-			logger('Expire: ' . $rr['channel_address'] . ' interval: ' . ((intval($site_expire) && intval($site_expire) < intval($rr['channel_expire_days'])) 
-				? $site_expire 
-				: $rr['channel_expire_days']), LOGGER_DEBUG);
-			item_expire($rr['channel_id'],
-				((intval($site_expire) && intval($site_expire) < intval($rr['channel_expire_days'])) 
-				? $site_expire 
-				: $rr['channel_expire_days'])
-			);
+			logger('Expire: ' . $rr['channel_address'] . ' interval: ' . $expire_days, LOGGER_DEBUG);
+			item_expire($rr['channel_id'], $expire_days);
 		}
 	}
 
@@ -74,8 +80,18 @@ function expire_run($argv, $argc){
 		$expire_days = get_config('system','sys_expire_days');
 		if($expire_days === false)
 			$expire_days = 30;
+
+		if(intval($site_expire) && (intval($site_expire) < intval($expire_days))) {
+			$expire_days = $site_expire;
+		}
+
+		logger('Expire: sys interval: ' . $expire_days, LOGGER_DEBUG);
+
 		if($expire_days)
-			item_expire($x['channel_id'],(($site_expire && $site_expire < $expire_days) ? $site_expire : $expire_days));
+			item_expire($x['channel_id'],$expire_days);
+
+		logger('Expire: sys: done', LOGGER_DEBUG);
+
 	}
 
 	return;
diff --git a/include/items.php b/include/items.php
index a1515ad88..da0e50c4c 100755
--- a/include/items.php
+++ b/include/items.php
@@ -3922,6 +3922,10 @@ function item_expire($uid,$days) {
 
 	$expire_network_only = 1;
 
+	$expire_limit = get_config('system','expire_limit');
+	if(! intval($expire_limit))
+		$expire_limit = 5000;
+
 	$sql_extra = ((intval($expire_network_only)) ? " AND not (item_flags & " . intval(ITEM_WALL) . ") > 0 " : "");
 
 	$r = q("SELECT * FROM `item` 
@@ -3930,7 +3934,7 @@ function item_expire($uid,$days) {
 		AND `id` = `parent` 
 		$sql_extra
 		AND NOT ( item_flags & %d )>0
-		AND (item_restrict = 0 ) ",
+		AND (item_restrict = 0 ) LIMIT $expire_limit ",
 		intval($uid),
 		db_utcnow(), db_quoteinterval(intval($days).' DAY'),
 		intval(ITEM_RETAINED)
-- 
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