php_crontab
, (*1)
php crontab base on pcntl and react/event-loop, (*2)
中文说明, (*3)
Why use php_crontab?
When we have a handful of crontab tasks, crontab service is enough for us to manage them.
If we have many crontab tasks, there will be some problems like:
+ The crontab tasks are managed in a text file. If there are no comment, it will be
hard for fresh man to understand what they are.
+ If the crontab tasks are distributed in different servers, it will be hard to manage them.
+ If you want to collect the crontab tasks' logs, it will be not easy.
+ Tasks of different users must written in different files.
Based on the above reasons, we need a crontab manager which can manage crontab tasks together and configure the tasks., (*4)
How to use php_crontab?
First composer require jenner/crontab.
There are two ways to use php_crontab to manage your crontab tasks.
You can just write a php script and add it to the crontab config file
with the command crontab -e. The php script should run every minute. For example tests/simple.php
Or you can write a php daemon script which will run as a service and will not exit until someone kill it.
It will check the tasks every minute. For example tests/daemon.php, (*5)
Import
composer require jenner/crontab
Properties
- The crontab tasks can be stored in any way you what. For example, mysql, reids.
What's more? You can develop a web application to manage them.
- The tasks of different users can be managed together.
- Multi-Process, every task is a process.
- You can set the user and group of a crontab task
- STDOUT can be redirected
- Based on react/event-loop, it can run as a daemon.
- A HTTP server which you can manage the crontab tasks through it.
- Dynamic task loader, you can register a task loader by Daemon::registerTaskLoader,
which will execute every 60 seconds and update the crontab tasks.
HTTP interfaces
HTTP METHOD: GET
+ add add new task to crontab server
+ get_by_name get task by name
+ remove_by_name remove task by name
+ clear clear all task
+ get get all tasks
+ start start crontab loop
+ stop stop crontab loop, (*6)
Examples:, (*7)
http://host:port/add?name=name&cmd=cmd&time=time&out=out&user=user&group=group&comment=comment
http://host:port/get_by_name?name=name
http://host:port/remove_by_name?name=name
http://host:port/clear
http://host:port/get
http://host:port/start
http://host:port/stop
TODO
- add log handler interface.
- add http log handler, socket log handler, file handler and so on.
- separate stdout and stderr. use different handlers
run based on crontab service, (*8)
* * * * * php demo.php
```php
<?php
$missions = [
[
'name' => 'ls',
'cmd' => "ls -al",
'out' => '/tmp/php_crontab.log',
'err' => '/tmp/php_crontab.log',
'time' => '* * * * ',
'user' => 'www',
'group' => 'www'
],
[
'name' => 'ls',
'cmd' => "ls -al",
'out' => '/tmp/php_crontab.log',
'err' => '/tmp/php_crontab.log',
'time' => ' * * * *',
'user' => 'www',
'group' => 'www'
],
];, (*9)
$tasks = array();
foreach($missions as $mission){
$tasks[] = new \Jenner\Crontab\Mission($mission['name'], $mission['cmd'], $mission['time'], $mission['out']);
}, (*10)
$crontab_server = new \Jenner\Crontab\Crontab(null, $tasks);
$crontab_server->start(time());, (*11)
**run as a daemon**
it will check the task configs every minute.
```php
$missions = [
[
'name' => 'ls',
'cmd' => "ls -al",
'out' => '/tmp/php_crontab.log',
'err' => '/tmp/php_crontab.log',
'time' => '* * * * *',
'user' => 'www',
'group' => 'www'
],
[
'name' => 'ls',
'cmd' => "ls -al",
'out' => '/tmp/php_crontab.log',
'err' => '/tmp/php_crontab.log',
'time' => '* * * * *',
'user' => 'www',
'group' => 'www'
],
];
$daemon = new \Jenner\Crontab\Daemon($missions);
$daemon->start();
Or use the task loader, (*12)
function task_loader() {
$missions = [
[
'name' => 'ls',
'cmd' => "ls -al",
'out' => '/tmp/php_crontab.log',
'time' => '* * * * *',
'user' => 'www',
'group' => 'www'
],
[
'name' => 'ls',
'cmd' => "ls -al",
'out' => '/tmp/php_crontab.log',
'time' => '* * * * *',
'user' => 'www',
'group' => 'www'
],
];
return $missions;
}
$daemon = new \Jenner\Crontab\Daemon();
$daemon->registerTaskLoader("task_loader");
$daemon->start();
run as a daemon and start the http server, (*13)
$missions = [
[
'name' => 'ls',
'cmd' => "ls -al",
'out' => '/tmp/php_crontab.log',
'err' => '/tmp/php_crontab.log',
'time' => '* * * * *',
'user' => 'www',
'group' => 'www'
],
[
'name' => 'ls',
'cmd' => "ls -al",
'out' => '/tmp/php_crontab.log',
'err' => '/tmp/php_crontab.log',
'time' => '* * * * *',
'user' => 'www',
'group' => 'www'
],
];
$http_daemon = new \Jenner\Crontab\HttpDaemon($missions, "php_crontab.log");
$http_daemon->start($port = 6364);
Then you can manage the crontab task by curl like:, (*14)
curl http://127.0.0.1:6364/get_by_name?name=ls
curl http://127.0.0.1:6364/remove_by_name?name=hostname
curl http://127.0.0.1:6364/get
run the script, (*15)
[root@jenner php_crontab]# ./bin/php_crontab
php_crontab help:
-c --config crontab tasks config file
-p --port http server port
-f --pid-file daemon pid file
-l --log crontab log file
[root@jenner php_crontab]#nohup ./bin/php_crontab -c xxoo.php -p 8080 -f /var/php_crontab.pid -l /var/logs/php_crontab.log >/dev/null &
blog:www.huyanping.cn, (*16)
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