Review, clean up of CLI documentation

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Will Rossiter 2014-09-27 17:53:21 +12:00 committed by Cam Findlay
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summary: Automate SilverStripe, run cronjobs or sync with other platforms through the sake Command Line Interface.
summary: Automate SilverStripe, run Cron Jobs or sync with other platforms through the Command Line Interface.
# Command line usage
# Command Line
## Introduction
SilverStripe can call [controllers](../controllers) through a command line interface (CLI) just as easily as through a
web browser. This can be used to automate tasks with cron jobs, run unit tests, or anything else that needs to interface
over the command line.
SilverStripe can call controllers through commandline `php` just as easily as through a web browser.
This can be handy to automate tasks with cron jobs, run unit tests and maintenance tasks,
and a whole bunch of other scripted goodness.
The main entry point for any commandline execution is `cli-script.php`. For example, to run a database rebuild
from the commandline, use this command:
The main entry point for any command line execution is `cli-script.php`. For example, to run a database rebuild
from the command line, use this command:
:::bash
cd your-webroot/
php framework/cli-script.php dev/build
Make sure that your commandline php version uses the same configuration as your webserver (run `php -i` to find out more).
<div class="notice">
Your command line php version is likely to use a different configuration as your webserver (run `php -i` to find out
more). This can be a good thing, your CLI can be configured to use higher memory limits than you would want your website
to have.
</div>
## GET parameters as arguments
## Sake: SilverStripe Make
You can add parameters to the command by using normal form encoding.
All parameters will be available in `$_GET` within SilverStripe.
Sake is a simple wrapper around `cli-script.php`. It also tries to detect which `php` executable to use if more than one
are available.
cd your-webroot/
php framework/cli-script.php myurl myparam=1 myotherparam=2
## SAKE: SilverStripe make
Sake is a simple wrapper around `cli-script.php`. It also tries to detect which `php` executable to use
if more than one are available.
**If you are using a debian server:** Check you have the php-cli package installed for sake to work.
If you get an error when running the command php -v, then you may not have php-cli installed so sake won't work.
<div class="info" markdown='1'>
If you are using a debian server: Check you have the php-cli package installed for sake to work. If you get an error
when running the command php -v, then you may not have php-cli installed so sake won't work.
</div>
### Installation
@ -39,66 +36,65 @@ You can copy the `sake` file into `/usr/bin/sake` for easier access (this is opt
cd your-webroot/
sudo ./framework/sake installsake
Note: This currently only works on unix-like systems, not on Windows.
<div class="warning">
This currently only works on UNIX-like systems, not on Windows.
</div>
## Configuration
### Configuration
Sometimes SilverStripe needs to know the URL of your site, for example, when sending an email. When you're visiting
your site in a web browser this is easy to work out, but if you're executing scripts on the command-line, it has no way
of knowing.
Sometimes SilverStripe needs to know the URL of your site, for example, when sending an email or generating static
files. When you're visiting your site in a web browser this is easy to work out, but if you're executing scripts on the
command line, it has no way of knowing.
To work this out, you should add lines of this form to your [_ss_environment.php](/topics/environment-management) file.
To work this out, you should add lines of this form to your [_ss_environment.php](/getting_started/environment_management)
file.
:::php
global $_FILE_TO_URL_MAPPING;
$_FILE_TO_URL_MAPPING['/Users/sminnee/Sites'] = 'http://localhost';
The above statement tells SilverStripe that anything executed under the `/Users/sminnee/Sites` directly will have the
base URL `http://localhost`.
What the line says is that any Folder under /Users/sminnee/Sites/ can be accessed in a web browser from
http://localhost. For example, /Users/sminnee/Sites/mysite will be available at http://localhost/mysite.
You can add multiple file to url mapping definitions. The most specific mapping will be used. For example:
You can add multiple file to url mapping definitions. The most specific mapping will be used. For example:
:::php
global $_FILE_TO_URL_MAPPING;
$_FILE_TO_URL_MAPPING['/Users/sminnee/Sites'] = 'http://localhost';
$_FILE_TO_URL_MAPPING['/Users/sminnee/Sites/mysite'] = 'http://mysite.localhost';
### Usage
Using this example, /Users/sminnee/Sites/mysite/ would be accessed at http://mysite.localhost/, and
/Users/sminnee/Sites/othersite/ would be accessed at http://localhost/othersite/
## Usage
Sake will either run `./framework/cli-script.php` or `./cli-script.php`, depending on what's available.
It's particularly useful for running build tasks...
Sake is particularly useful for running build tasks
:::bash
cd /your/site/folder
sake dev/build "flush=1"
sake dev/tests/all
It can also be handy if you have a long running script.
:::bash
cd /your/site/folder
sake dev/tasks/MyReallyLongTask
### Running processes
You can use sake to make daemon processes for your application.
Step 1: Make a task or controller class that runs a loop. Because SilverStripe has memory leaks, you should make the PHP
process exit when it hits some reasonable memory limit. Sake will automatically restart your process whenever it exits.
Step 1: Make a task or controller class that runs a loop. To avoid memory leaks, you should make the PHP process exit
when it hits some reasonable memory limit. Sake will automatically restart your process whenever it exits.
The other thing you should do is include some appropriate sleep()s so that your process doesn't hog the system. The
best thing to do is to have a short sleep when the process is in the middle of doing things, and a long sleep when
doesn't have anything to do.
Step 2: Include some appropriate sleep()s so that your process doesn't hog the system. The best thing to do is to have
a short sleep when the process is in the middle of doing things, and a long sleep when doesn't have anything to do.
This code provides a good template:
:::php
<?php
class MyProcess extends Controller {
private static $allowed_actions = array(
@ -119,37 +115,36 @@ This code provides a good template:
}
}
Step 2: Install the "daemon" command-line tool on your server.
Step 3: Install the "daemon" command-line tool on your server.
Step 3: Use sake to start and stop your process
Step 4: Use sake to start and stop your process
:::bash
sake -start MyProcess
sake -stop MyProcess
<div class="notice">
Sake stores Pid and log files in the site root directory.
</div>
Note that sake processes are currently a little brittle, in that the pid and log
files are placed in the site root directory, rather than somewhere sensible like
/var/log or /var/run.
## GET parameters as arguments
### Running Regular Tasks With Cron
You can add parameters to the command by using normal form encoding. All parameters will be available in `$_GET` within
SilverStripe. Using the `cli-script.php` directly:
On a unix machine, you can typically run a scheduled task with a [cron job](http://en.wikipedia.org/wiki/Cron),
using one of the following command-line calls:
:::bash
cd your-webroot/
php framework/cli-script.php myurl myparam=1 myotherparam=2
```
/path/to/site_root/framework/sake dev/tasks/MyTask
php /path/to/site_root/framework/cli-script.php dev/tasks/MyTask
```
Or if you're using `sake`
If you find that your cron job appears to be retrieving the login screen, then you may need to use `php-cli`
instead. This is typical of a cPanel-based setup.
:::bash
sake myurl "myparam=1&myotherparam=2"
```
php-cli /path/to/site_root/framework/cli-script.php dev/tasks/MyTask
```
## Running Regular Tasks With Cron
A good approach to setting up and testing your task to run with cron is:
On a UNIX machine, you can typically run a scheduled task with a [cron job](http://en.wikipedia.org/wiki/Cron). You can
execute any `BuildTask` in SilverStripe as a cron job using `Sake`.
1. Try running the task via the command-line on your server. `/path/to/site_root/framework/sake dev/tasks/MyTask`
2. Set up a cron job to run the task every minute. `* * * * * /path/to/site_root/framework/sake dev/tasks/MyTask`
3. Finally, set the task to run when you want it to. `0 2 * * * /path/to/site_root/framework/sake dev/tasks/MyTask` (2am)
:::bash
* * * * * /your/site/folder/sake dev/tasks/MyTask