Files
webgui/emhttp/plugins/dynamix/include/publish.php
2025-04-17 13:55:10 -04:00

72 lines
2.5 KiB
PHP

<?PHP
/* Copyright 2005-2023, Lime Technology
* Copyright 2012-2023, Bergware International.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2,
* as published by the Free Software Foundation.
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*/
?>
<?
$docroot ??= ($_SERVER['DOCUMENT_ROOT'] ?: '/usr/local/emhttp');
require_once "$docroot/webGui/include/Wrappers.php";
function curl_socket($socket, $url, $message='') {
$com = curl_init($url);
curl_setopt_array($com, [CURLOPT_UNIX_SOCKET_PATH => $socket, CURLOPT_RETURNTRANSFER => 1]);
if ($message) curl_setopt_array($com, [CURLOPT_POSTFIELDS => $message, CURLOPT_POST => 1]);
$reply = curl_exec($com);
curl_close($com);
if ($reply===false) my_logger("curl to $url failed", 'curl_socket');
return $reply;
}
function publish($endpoint, $message, $len=1) {
static $com = [];
static $lens = [];
if ( is_file("/tmp/publishPaused") )
return false;
// Check for the unlikely case of a buffer length change
if ( (($lens[$endpoint] ?? 1) !== $len) && isset($com[$endpoint]) ) {
curl_close($com[$endpoint]);
unset($com[$endpoint]);
}
if ( !isset($com[$endpoint]) ) {
$lens[$endpoint] = $len;
$com[$endpoint] = curl_init("http://localhost/pub/$endpoint?buffer_length=$len");
curl_setopt_array($com[$endpoint],[
CURLOPT_UNIX_SOCKET_PATH => "/var/run/nginx.socket",
CURLOPT_HTTPHEADER => ['Accept:text/json'],
CURLOPT_POST => 1,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_FAILONERROR => true
]);
}
curl_setopt($com[$endpoint], CURLOPT_POSTFIELDS, $message);
$reply = curl_exec($com[$endpoint]);
$err = curl_error($com[$endpoint]);
if ($err) {
curl_close($com[$endpoint]);
unset($com[$endpoint]);
preg_match_all("/[0-9]+/",$err,$matches);
// 500: out of shared memory when creating a channel
// 507: out of shared memory publishing a message
if ( ($matches[0][0] ?? "") == 507 || ($matches[0][0] ?? "") == 500 ) {
my_logger("Nchan out of shared memory. Reloading nginx");
// prevent multiple attempts at restarting from other scripts using publish.php
touch("/tmp/publishPaused");
exec("/etc/rc.d/rc.nginx restart");
@unlink("/tmp/publishPaused");
}
}
if ($reply===false) my_logger("curl to $endpoint failed", 'publish');
return $reply;
}
?>