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database notification API

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This commit is contained in:
Shish
2020-10-03 12:50:37 +00:00
parent 2ac695c135
commit e696357c06
2 changed files with 24 additions and 0 deletions
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19
core/dbengine.php
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@ -33,6 +33,8 @@ abstract class DBEngine
abstract public function set_timeout(PDO $db, int $time);
abstract public function get_version(PDO $db): string;
abstract public function notify(PDO $db, string $channel, ?string $data=null): void;
}
class MySQL extends DBEngine
@ -71,6 +73,10 @@ class MySQL extends DBEngine
// $db->exec("SET SESSION MAX_EXECUTION_TIME=".$time.";");
}
public function notify(PDO $db, string $channel, ?string $data=null): void
{
}
public function get_version(PDO $db): string
{
return $db->query('select version()')->fetch()[0];
@ -118,6 +124,15 @@ class PostgreSQL extends DBEngine
$db->exec("SET statement_timeout TO ".$time.";");
}
public function notify(PDO $db, string $channel, ?string $data=null): void
{
if ($data) {
$db->exec("NOTIFY $channel, '$data';");
} else {
$db->exec("NOTIFY $channel;");
}
}
public function get_version(PDO $db): string
{
return $db->query('select version()')->fetch()[0];
@ -229,6 +244,10 @@ class SQLite extends DBEngine
// There doesn't seem to be such a thing for SQLite, so it does nothing
}
public function notify(PDO $db, string $channel, ?string $data=null): void
{
}
public function get_version(PDO $db): string
{
return $db->query('select sqlite_version()')->fetch()[0];