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Revert "MDL-63466 core_message: removed get_last_message_time_created_cache_key"

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This reverts commit 4f22d7f23b022c143910a9a136fecbd325dce356.
This commit is contained in:
Andrew Nicols 2018-10-26 14:53:58 +08:00
parent 621e7eb022
commit 4699b8bc41
3 changed files with 17 additions and 4 deletions
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3
lib/messagelib.php
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@ -295,7 +295,8 @@ function message_send(\core\message\message $eventdata) {
if (!empty($eventdata->convid)) {
// Cache the timecreated value of the last message in this conversation.
$cache = cache::make('core', 'message_time_last_message_in_conversation');
$cache->set($eventdata->convid, $tabledata->timecreated);
$key = \core_message\helper::get_last_message_time_created_cache_key($eventdata->convid);
$cache->set($key, $tabledata->timecreated);
}
}

8
message/classes/api.php
View File

@ -630,8 +630,9 @@ class api {
}
// Check the cache to see if we even need to do a DB query.
$cache = \cache::make('core', 'message_time_last_message_in_conversation');
$lastcreated = $cache->get($conversationid);
$cache = \cache::make('core', 'message_time_last_message_between_users');
$key = helper::get_last_message_time_created_cache_key($conversationid);
$lastcreated = $cache->get($key);
// The last known message time is earlier than the one being requested so we can
// just return an empty result set rather than having to query the DB.
@ -667,7 +668,8 @@ class api {
if (!empty($timefrom)) {
// Check the cache to see if we even need to do a DB query.
$cache = \cache::make('core', 'message_time_last_message_in_conversation');
$lastcreated = $cache->get($convid);
$key = helper::get_last_message_time_created_cache_key($convid);
$lastcreated = $cache->get($key);
// The last known message time is earlier than the one being requested so we can
// just return an empty result set rather than having to query the DB.

10
message/classes/helper.php
View File

@ -440,6 +440,16 @@ class helper {
return sha1(implode('-', $userids));
}
/**
* Returns the cache key for the time created value of the last message of this conversation.
*
* @param int $convid The conversation identifier.
* @return string The key.
*/
public static function get_last_message_time_created_cache_key(int $convid) {
return $convid;
}
/**
* Checks if legacy messages exist for a given user.
*