PHP Daemon
PEAR有一个System_Daemon
作者网站上的说明: http://kevin.vanzonneveld.net/techblog/article/create_daemons_in_php/
类似这样安装:
aptitude -y update
aptitude -y install php-pear
pear install -f system_daemon
aptitude -y install php-pear
pear install -f system_daemon
像这样使用:
require_once "System/Daemon.php";
// Bare minimum setup
System_Daemon::setOption("appName", "simple");
System_Daemon::setOption("authorEmail", "[email protected]");
// Spawn Deamon!
System_Daemon::start();
// Your PHP Here!
while (true) {
doTask();
}
// Stop daemon!
System_Daemon::stop();
// Bare minimum setup
System_Daemon::setOption("appName", "simple");
System_Daemon::setOption("authorEmail", "[email protected]");
// Spawn Deamon!
System_Daemon::start();
// Your PHP Here!
while (true) {
doTask();
}
// Stop daemon!
System_Daemon::stop();
综合实例
#!/usr/bin/php -q
<?php
/**
* System_Daemon turns PHP-CLI scripts into daemons.
*
* PHP version 5
*
* @category System
* @package System_Daemon
* @author Kevin <[email protected]>
* @copyright 2008 Kevin van Zonneveld
* @license http://www.opensource.org/licenses/bsd-license.php
* @version SVN: Release: $Id: logparser.php 215 2009-04-25 10:10:18Z kevin $
* @link http://trac.plutonia.nl/projects/system_daemon
*/
/**
* System_Daemon Example Code
*
* If you run this code successfully, a daemon will be spawned
* but unless have already generated the init.d script, you have
* no real way of killing it yet.
*
* In this case wait 3 runs, which is the maximum for this example.
*
*
* In panic situations, you can always kill you daemon by typing
*
* killall -9 logparser.php
* OR:
* killall -9 php
*
*/
// Allowed arguments & their defaults
$runmode = array(
"no-daemon" => false,
"help" => false,
"write-initd" => false
);
// Scan command line attributes for allowed arguments
foreach ($argv as $k=>$arg) {
if (substr($arg, 0, 2) == "--" && isset($runmode[substr($arg, 2)])) {
$runmode[substr($arg, 2)] = true;
}
}
// Help mode. Shows allowed argumentents and quit directly
if ($runmode["help"] == true) {
echo "Usage: ".$argv[0]." [runmode]\n";
echo "Available runmodes:\n";
foreach ($runmode as $runmod=>$val) {
echo " --".$runmod."\n";
}
die();
}
// Make it possible to test in source directory
// This is for PEAR developers only
ini_set('include_path', ini_get('include_path').':..');
// Include Class
error_reporting(E_ALL);
require_once "System/Daemon.php";
// Setup
$options = array(
"appName" => "logparser",
"appDir" => dirname(__FILE__),
"appDescription" => "Parses vsftpd logfiles and stores them in MySQL",
"authorName" => "Kevin van Zonneveld",
"authorEmail" => "[email protected]",
"sysMaxExecutionTime" => "0",
"sysMaxInputTime" => "0",
"sysMemoryLimit" => "1024M",
"appRunAsGID" => 1000,
"appRunAsUID" => 1000
);
System_Daemon::setOptions($options);
// Overrule the signal handler with any function
System_Daemon::setSigHandler(SIGCONT, array("System_Daemon",
"defaultSigHandler"));
// This program can also be run in the forground with runmode --no-daemon
if (!$runmode["no-daemon"]) {
// Spawn Daemon
System_Daemon::start();
}
// With the runmode --write-initd, this program can automatically write a
// system startup file called: 'init.d'
// This will make sure your daemon will be started on reboot
if (!$runmode["write-initd"]) {
System_Daemon::log(System_Daemon::LOG_INFO, "not writing ".
"an init.d script this time");
} else {
if (($initd_location = System_Daemon::writeAutoRun()) === false) {
System_Daemon::log(System_Daemon::LOG_NOTICE, "unable to write ".
"init.d script");
} else {
System_Daemon::log(System_Daemon::LOG_INFO, "sucessfully written ".
"startup script: ".$initd_location);
}
}
// Run your code
// Here comes your own actual code
// This variable gives your own code the ability to breakdown the daemon:
$runningOkay = true;
// This variable keeps track of how many 'runs' or 'loops' your daemon has
// done so far. For example purposes, we're quitting on 3.
$cnt = 1;
// While checks on 3 things in this case:
// - That the Daemon Class hasn't reported it's dying
// - That your own code has been running Okay
// - That we're not executing more than 3 runs
while (!System_Daemon::isDying() && $runningOkay && $cnt <=3) {
// What mode are we in?
$mode = "'".(System_Daemon::isInBackground() ? "" : "non-" ).
"daemon' mode";
// Log something using the Daemon class's logging facility
// Depending on runmode it will either end up:
// - In the /var/log/logparser.log
// - On screen (in case we're not a daemon yet)
System_Daemon::log(System_Daemon::LOG_INFO,
System_Daemon::getOption("appName").
" running in ".$mode." ".$cnt."/3");
// In the actuall logparser program, You could replace 'true'
// With e.g. a parseLog('vsftpd') function, and have it return
// either true on success, or false on failure.
$runningOkay = true;
//$runningOkay = parseLog('vsftpd');
// Should your parseLog('vsftpd') return false, then
// the daemon is automatically shut down.
// An extra log entry would be nice, we're using level 3,
// which is critical.
// Level 4 would be fatal and shuts down the daemon immediately,
// which in this case is handled by the while condition.
if (!$runningOkay) {
System_Daemon::log(System_Daemon::LOG_ERR, "parseLog() ".
"produced an error, ".
"so this will be my last run");
}
// Relax the system by sleeping for a little bit
// iterate also clears statcache
System_Daemon::iterate(2);
$cnt++;
}
// Shut down the daemon nicely
// This is ignored if the class is actually running in the foreground
System_Daemon::stop();
?>
<?php
/**
* System_Daemon turns PHP-CLI scripts into daemons.
*
* PHP version 5
*
* @category System
* @package System_Daemon
* @author Kevin <[email protected]>
* @copyright 2008 Kevin van Zonneveld
* @license http://www.opensource.org/licenses/bsd-license.php
* @version SVN: Release: $Id: logparser.php 215 2009-04-25 10:10:18Z kevin $
* @link http://trac.plutonia.nl/projects/system_daemon
*/
/**
* System_Daemon Example Code
*
* If you run this code successfully, a daemon will be spawned
* but unless have already generated the init.d script, you have
* no real way of killing it yet.
*
* In this case wait 3 runs, which is the maximum for this example.
*
*
* In panic situations, you can always kill you daemon by typing
*
* killall -9 logparser.php
* OR:
* killall -9 php
*
*/
// Allowed arguments & their defaults
$runmode = array(
"no-daemon" => false,
"help" => false,
"write-initd" => false
);
// Scan command line attributes for allowed arguments
foreach ($argv as $k=>$arg) {
if (substr($arg, 0, 2) == "--" && isset($runmode[substr($arg, 2)])) {
$runmode[substr($arg, 2)] = true;
}
}
// Help mode. Shows allowed argumentents and quit directly
if ($runmode["help"] == true) {
echo "Usage: ".$argv[0]." [runmode]\n";
echo "Available runmodes:\n";
foreach ($runmode as $runmod=>$val) {
echo " --".$runmod."\n";
}
die();
}
// Make it possible to test in source directory
// This is for PEAR developers only
ini_set('include_path', ini_get('include_path').':..');
// Include Class
error_reporting(E_ALL);
require_once "System/Daemon.php";
// Setup
$options = array(
"appName" => "logparser",
"appDir" => dirname(__FILE__),
"appDescription" => "Parses vsftpd logfiles and stores them in MySQL",
"authorName" => "Kevin van Zonneveld",
"authorEmail" => "[email protected]",
"sysMaxExecutionTime" => "0",
"sysMaxInputTime" => "0",
"sysMemoryLimit" => "1024M",
"appRunAsGID" => 1000,
"appRunAsUID" => 1000
);
System_Daemon::setOptions($options);
// Overrule the signal handler with any function
System_Daemon::setSigHandler(SIGCONT, array("System_Daemon",
"defaultSigHandler"));
// This program can also be run in the forground with runmode --no-daemon
if (!$runmode["no-daemon"]) {
// Spawn Daemon
System_Daemon::start();
}
// With the runmode --write-initd, this program can automatically write a
// system startup file called: 'init.d'
// This will make sure your daemon will be started on reboot
if (!$runmode["write-initd"]) {
System_Daemon::log(System_Daemon::LOG_INFO, "not writing ".
"an init.d script this time");
} else {
if (($initd_location = System_Daemon::writeAutoRun()) === false) {
System_Daemon::log(System_Daemon::LOG_NOTICE, "unable to write ".
"init.d script");
} else {
System_Daemon::log(System_Daemon::LOG_INFO, "sucessfully written ".
"startup script: ".$initd_location);
}
}
// Run your code
// Here comes your own actual code
// This variable gives your own code the ability to breakdown the daemon:
$runningOkay = true;
// This variable keeps track of how many 'runs' or 'loops' your daemon has
// done so far. For example purposes, we're quitting on 3.
$cnt = 1;
// While checks on 3 things in this case:
// - That the Daemon Class hasn't reported it's dying
// - That your own code has been running Okay
// - That we're not executing more than 3 runs
while (!System_Daemon::isDying() && $runningOkay && $cnt <=3) {
// What mode are we in?
$mode = "'".(System_Daemon::isInBackground() ? "" : "non-" ).
"daemon' mode";
// Log something using the Daemon class's logging facility
// Depending on runmode it will either end up:
// - In the /var/log/logparser.log
// - On screen (in case we're not a daemon yet)
System_Daemon::log(System_Daemon::LOG_INFO,
System_Daemon::getOption("appName").
" running in ".$mode." ".$cnt."/3");
// In the actuall logparser program, You could replace 'true'
// With e.g. a parseLog('vsftpd') function, and have it return
// either true on success, or false on failure.
$runningOkay = true;
//$runningOkay = parseLog('vsftpd');
// Should your parseLog('vsftpd') return false, then
// the daemon is automatically shut down.
// An extra log entry would be nice, we're using level 3,
// which is critical.
// Level 4 would be fatal and shuts down the daemon immediately,
// which in this case is handled by the while condition.
if (!$runningOkay) {
System_Daemon::log(System_Daemon::LOG_ERR, "parseLog() ".
"produced an error, ".
"so this will be my last run");
}
// Relax the system by sleeping for a little bit
// iterate also clears statcache
System_Daemon::iterate(2);
$cnt++;
}
// Shut down the daemon nicely
// This is ignored if the class is actually running in the foreground
System_Daemon::stop();
?>
控制 Daemon
执行daemon
chmod a+x ./logparser.php
./logparser.php
./logparser.php
检查daemon
Your daemon has no way of communicating through your console, so check for messages in:
tail /var/log/logparser.log
看看是不是还在运行:
ps uf -C logparser.php
Kill daemon
Without the start/stop files (see below for howto), you need to:
killall -9 logparser.php
开始 / 停止 (只支持Debian & Ubuntu)
真正的daemons有一个init.d文件. 记得怎么样启动apache吧?
/etc/init.d/apache2 restart
用这个方法停止更好:
/etc/init.d/logparser stop
/etc/init.d/logparser start
/etc/init.d/logparser start
Well with System_Daemon you can write autostartup files using the writeAutoRun() method, look:
$path = System_Daemon::writeAutoRun();
On success, this will return the path to the autostartup file: /etc/init.d/logparser, and you're good to go!
启动时运行daemon
在 Debian & Ubuntu 上输入以下命令:
update-rc.d logparser defaults
现在系统启动就会自动运行logparser.
如果要停止, 输入如下命令:
update-rc.d -f logparser remove
另外, PHP的进程控制, 可以看
http://www.php.net/manual/en/book.pcntl.php