Laravel is I recently used a lot and the more I like a PHP framework, because there is no backward-compatible historical baggage, fully object-oriented style, with the help of facades elegant IOC Container implementation, the use of Composer package management, can easily introduce and use the best components in the open source community ... In short, this is a real let you "code Happy" "Master-level PHP development framework."
When trying to deploy their laravel App to Aliyun, a problem has been encountered: Laravel supports Memcached caching, Aliyun OCS is also Memcached based caching, but Aliyun OCS uses SASL authentication and Laravel Memcached driver does not implement the relevant methods, even if the PHP Memcached on the server enabled the SASL authentication option, there is no way to set user name and password.
In Laravel, there are many ways to solve such problems. I chose the quickest and easiest way: to extend Laravel own Memcached drive, and to specify the username and password by Memcached the Setsaslauthdata method of the object itself.
Background knowledge
This is the use of the Illuminate\cache\cachemanager extend method (inherited from Illuminate\support\manager). Let's take a look at the definition of this method:
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/**
* Register a custom driver creator Closure.
*
* @param string $driver
* @param Closure $callback
* @return \illuminate\support\manager|static
*/
Public function Extend ($driver, Closure $callback) {}
This method receives two parameters, the first is a string representing your custom driver name, and the second is a closure callback function, which is the method to execute when calling your custom driver. By reading the Illuminate\cache\cachemanager source code, we can see that creating a driven function returns an Illuminate\cache\repository instance, illuminate\cache\ The Repository constructor is as follows:
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/**
* Create a new cache repository instance.
*
* @param \illuminate\cache\storeinterface $store
*/
Public function __construct (Storeinterface $store)
{
$this->store = $store;
}
It requires an object that implements the Illuminate\cache\storeinterface interface, which defines the method that the Cache object can execute. Since my plan is to extend the original Memcached cache driver, in Illuminate\cache\cachemanager source code, you can see that laravel is creating Memcached-driven:
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/**
* Create An instance of the Memcached cache driver.
*
* @return \illuminate\cache\memcachedstore
*/
protected function Creatememcacheddriver ()
{
$servers = $this->app[' config ' [' cache.memcached '];
$memcached = $this->app[' memcached.connector ']->connect ($servers);
Return $this->repository (new Memcachedstore ($memcached, $this->getprefix ()));
}
It first reads your defined Memcached server from the configuration file, and then creates a Memcached object (implemented by Illuminate\cache\memcachedconnector, which is actually creating a standard Memcached object. Then call the Memcached Addserver method to specify the server to connect to, and then return the instantiated Memcached object. )
Extend your own cache driver
Once you know the background, you can expand your cache driver. Ideas are as follows:
1. In the app/config/cache.php file, add three configuration items to set up "whether to use SASL authentication", "SASL Authentication Account", "SASL Authentication password".
2. In the bootstrap/start.php file, call the Cache::extend method extension driver.
3. In the app/config/cache.php file, modify the driver configuration entry to specify that the system uses its own extended drive.
Adding Configuration Items
First, open the app/config/cache.php file and find:
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' memcached ' => Array (
Array (' Host ' => ' 127.0.0.1 ', ' Port ' => 11211, ' weight ' => 100),
),
Modified to:
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' memcached ' => Array (
Array (' Host ' => ' 127.0.0.1 ', ' Port ' => 11211, ' weight ' => 100),
),
' Memcached_sasl ' => ' true ',//enable SASL authentication
' Memcached_user ' => ' your OCS username ',//your OCS user name
' Memcached_pass ' => ' Your OCS password ',//Your OCS password
Extended Drive
Then, open the bootstrap/start.php file and return $app on the last line; Insert code before:
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Based on the system's own Memcached cache driver, extend a cache driver named saslmemcached
Cache::extend (' saslmemcached ', function ($app) {
Read the Memcached server configuration from the configuration file
$servers = $app [' config '] [' cache.memcached '];
Use the Illuminate\cache\memcachedconnector class to create a new Memcached object
$memcached = $app [' Memcached.connector ']->connect ($servers);
If the PHP Memcached extension on the server supports SASL authentication
if (Ini_get (' MEMCACHED.USE_SASL ')) {
Read the SASL authenticated username from the configuration file
$user = $app [' config '] [' cache.memcached_user '];
Read the SASL authentication password from the configuration file
$pass = $app [' config '] [' cache.memcached_pass '];
Disable Memcached compression (in Aliyun's documentation ...) ）
$memcached->setoption (Memcached::opt_compression, false);
Specify Memcached to use binary protocol (SASL authentication requirements)
$memcached->setoption (Memcached::opt_binary_protocol, true);
Specify the account password for SASL authentication
$memcached->setsaslauthdata ($user, $pass);
}
Read the cache prefix from the configuration file
$prefix = $app [' config '] [' cache.prefix '];
Creating Memcachedstore Objects
$store = new \illuminate\cache\memcachedstore ($memcached, $prefix);
Creates a Repository object and returns
return new \illuminate\cache\repository ($store);
});
Modify the configuration to use your own extended cache driver
Open the app/config/cache.php file and find:
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"Driver" => "file",//default is to use the files cache
Modified to:
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"Driver" => "saslmemcached",//The driver name of the extension implementation just now
Now you can get laravel to use the Aliyun OCS caching service on your Aliyun ECS server. (Provided your PHP supports Memcached extensions, and SASL authentication is enabled, refer to: http://help.aliyun.com/doc/view/13553932.html
