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Add Config adapter interfaces/classes

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Hypolite Petovan 2018-03-03 12:09:12 -05:00
parent cc688e2b4f
commit d760d33989
6 changed files with 619 additions and 0 deletions
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72
src/Core/Config/IConfigAdapter.php Normal file
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<?php
namespace Friendica\Core\Config;
/**
*
* @author Hypolite Petovan <mrpetovan@gmail.com>
*/
interface IConfigAdapter
{
/**
* @brief Loads all configuration values into a cached storage.
*
* All configuration values of the system are stored in global cache
* which is available under the global variable $a->config
*
* @param string $cat The category of the configuration values to load
*
* @return void
*/
public function load($cat = "config");
/**
* @brief Get a particular user's config variable given the category name
* ($family) and a key.
*
* Get a particular config value from the given category ($family)
* and the $key from a cached storage in $a->config[$uid].
* $instore is only used by the set_config function
* to determine if the key already exists in the DB
* If a key is found in the DB but doesn't exist in
* local config cache, pull it into the cache so we don't have
* to hit the DB again for this item.
*
* @param string $cat The category of the configuration value
* @param string $k The configuration key to query
* @param mixed $default_value optional, The value to return if key is not set (default: null)
* @param boolean $refresh optional, If true the config is loaded from the db and not from the cache (default: false)
*
* @return mixed Stored value or null if it does not exist
*/
public function get($cat, $k, $default_value = null, $refresh = false);
/**
* @brief Sets a configuration value for system config
*
* Stores a config value ($value) in the category ($family) under the key ($key)
* for the user_id $uid.
*
* Note: Please do not store booleans - convert to 0/1 integer values!
*
* @param string $family The category of the configuration value
* @param string $key The configuration key to set
* @param mixed $value The value to store
*
* @return mixed Stored $value or false if the database update failed
*/
public function set($cat, $k, $value);
/**
* @brief Deletes the given key from the system configuration.
*
* Removes the configured value from the stored cache in $a->config
* and removes it from the database.
*
* @param string $cat The category of the configuration value
* @param string $k The configuration key to delete
*
* @return mixed
*/
public function delete($cat, $k);
}

77
src/Core/Config/IPConfigAdapter.php Normal file
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<?php
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
namespace Friendica\Core\Config;
/**
*
* @author benlo
*/
interface IPConfigAdapter
{
/**
* @brief Loads all configuration values of a user's config family into a cached storage.
*
* All configuration values of the given user are stored in global cache
* which is available under the global variable $a->config[$uid].
*
* @param string $uid The user_id
* @param string $cat The category of the configuration value
*
* @return void
*/
public function load($uid, $cat);
/**
* @brief Get a particular user's config variable given the category name
* ($family) and a key.
*
* Get a particular user's config value from the given category ($family)
* and the $key from a cached storage in $a->config[$uid].
*
* @param string $uid The user_id
* @param string $cat The category of the configuration value
* @param string $k The configuration key to query
* @param mixed $default_value optional, The value to return if key is not set (default: null)
* @param boolean $refresh optional, If true the config is loaded from the db and not from the cache (default: false)
*
* @return mixed Stored value or null if it does not exist
*/
public function get($uid, $cat, $k, $default_value = null, $refresh = false);
/**
* @brief Sets a configuration value for a user
*
* Stores a config value ($value) in the category ($family) under the key ($key)
* for the user_id $uid.
*
* @note Please do not store booleans - convert to 0/1 integer values!
*
* @param string $uid The user_id
* @param string $cat The category of the configuration value
* @param string $k The configuration key to set
* @param string $value The value to store
*
* @return mixed Stored $value or false
*/
public function set($uid, $cat, $k, $value);
/**
* @brief Deletes the given key from the users's configuration.
*
* Removes the configured value from the stored cache in $a->config[$uid]
* and removes it from the database.
*
* @param string $uid The user_id
* @param string $cat The category of the configuration value
* @param string $k The configuration key to delete
*
* @return mixed
*/
public function delete($uid, $cat, $k);
}

132
src/Core/Config/JITConfigAdapter.php Normal file
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<?php
namespace Friendica\Core\Config;
use dba;
use Friendica\BaseObject;
use Friendica\Database\DBM;
require_once 'include/dba.php';
/**
* JustInTime ConfigAdapter
*
* Default Config Adapter. Provides the best performance for pages loading few configuration variables.
*
* @author Hypolite Petovan <mrpetovan@gmail.com>
*/
class JITConfigAdapter extends BaseObject implements IConfigAdapter
{
private $cache;
private $in_db;
public function load($cat = "config")
{
// We don't preload "system" anymore.
// This reduces the number of database reads a lot.
if ($cat === 'system') {
return;
}
$a = self::getApp();
$configs = dba::select('config', ['v', 'k'], ['cat' => $cat]);
while ($config = dba::fetch($configs)) {
$k = $config['k'];
if ($cat === 'config') {
$a->config[$k] = $config['v'];
} else {
$a->config[$cat][$k] = $config['v'];
self::$cache[$cat][$k] = $config['v'];
self::$in_db[$cat][$k] = true;
}
}
dba::close($configs);
}
public function get($cat, $k, $default_value = null, $refresh = false)
{
$a = self::getApp();
if (!$refresh) {
// Do we have the cached value? Then return it
if (isset($this->cache[$cat][$k])) {
if ($this->cache[$cat][$k] === '!<unset>!') {
return $default_value;
} else {
return $this->cache[$cat][$k];
}
}
}
$config = dba::selectFirst('config', ['v'], ['cat' => $cat, 'k' => $k]);
if (DBM::is_result($config)) {
// manage array value
$value = (preg_match("|^a:[0-9]+:{.*}$|s", $config['v']) ? unserialize($config['v']) : $config['v']);
// Assign the value from the database to the cache
$this->cache[$cat][$k] = $value;
$this->in_db[$cat][$k] = true;
return $value;
} elseif (isset($a->config[$cat][$k])) {
// Assign the value (mostly) from the .htconfig.php to the cache
$this->cache[$cat][$k] = $a->config[$cat][$k];
$this->in_db[$cat][$k] = false;
return $a->config[$cat][$k];
}
$this->cache[$cat][$k] = '!<unset>!';
$this->in_db[$cat][$k] = false;
return $default_value;
}
public function set($cat, $k, $value)
{
$a = self::getApp();
// We store our setting values in a string variable.
// So we have to do the conversion here so that the compare below works.
// The exception are array values.
$dbvalue = (!is_array($value) ? (string)$value : $value);
$stored = $this->get($cat, $k, null, true);
if (($stored === $dbvalue) && $this->in_db[$cat][$k]) {
return true;
}
if ($cat === 'config') {
$a->config[$k] = $dbvalue;
} elseif ($cat != 'system') {
$a->config[$cat][$k] = $dbvalue;
}
// Assign the just added value to the cache
$this->cache[$cat][$k] = $dbvalue;
// manage array value
$dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
$result = dba::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $k], true);
if ($result) {
$this->in_db[$cat][$k] = true;
return $value;
}
return $result;
}
public function delete($cat, $k)
{
if (isset($this->cache[$cat][$k])) {
unset($this->cache[$cat][$k]);
unset($this->in_db[$cat][$k]);
}
$result = dba::delete('config', ['cat' => $cat, 'k' => $k]);
return $result;
}
}

117
src/Core/Config/JITPConfigAdapter.php Normal file
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<?php
namespace Friendica\Core\Config;
use dba;
use Friendica\BaseObject;
use Friendica\Database\DBM;
require_once 'include/dba.php';
/**
* JustInTime PConfigAdapter
*
* Default PConfig Adapter. Provides the best performance for pages loading few configuration variables.
*
* @author Hypolite Petovan <mrpetovan@gmail.com>
*/
class JITPConfigAdapter extends BaseObject implements IPConfigAdapter
{
private $in_db;
public function load($uid, $cat)
{
$a = self::getApp();
$pconfigs = dba::select('pconfig', ['v', 'k'], ['cat' => $cat, 'uid' => $uid]);
if (DBM::is_result($pconfigs)) {
while ($pconfig = dba::fetch($pconfigs)) {
$k = $pconfig['k'];
$a->config[$uid][$cat][$k] = $pconfig['v'];
$this->in_db[$uid][$cat][$k] = true;
}
} else if ($cat != 'config') {
// Negative caching
$a->config[$uid][$cat] = "!<unset>!";
}
dba::close($pconfigs);
}
public function get($uid, $cat, $k, $default_value = null, $refresh = false)
{
$a = self::getApp();
if (!$refresh) {
// Looking if the whole family isn't set
if (isset($a->config[$uid][$cat])) {
if ($a->config[$uid][$cat] === '!<unset>!') {
return $default_value;
}
}
if (isset($a->config[$uid][$cat][$k])) {
if ($a->config[$uid][$cat][$k] === '!<unset>!') {
return $default_value;
}
return $a->config[$uid][$cat][$k];
}
}
$pconfig = dba::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
if (DBM::is_result($pconfig)) {
$val = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
$a->config[$uid][$cat][$k] = $val;
$this->in_db[$uid][$cat][$k] = true;
return $val;
} else {
$a->config[$uid][$cat][$k] = '!<unset>!';
$this->in_db[$uid][$cat][$k] = false;
return $default_value;
}
}
public function set($uid, $cat, $k, $value)
{
$a = self::getApp();
// We store our setting values in a string variable.
// So we have to do the conversion here so that the compare below works.
// The exception are array values.
$dbvalue = (!is_array($value) ? (string)$value : $value);
$stored = $this->get($uid, $cat, $k, null, true);
if (($stored === $dbvalue) && $this->in_db[$uid][$cat][$k]) {
return true;
}
$a->config[$uid][$cat][$k] = $dbvalue;
// manage array value
$dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
$result = dba::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $k], true);
if ($result) {
$this->in_db[$uid][$cat][$k] = true;
return $value;
}
return $result;
}
public function delete($uid, $cat, $k)
{
$a = self::getApp();
if (!empty($a->config[$uid][$cat][$k])) {
unset($a->config[$uid][$cat][$k]);
unset($this->in_db[$uid][$cat][$k]);
}
$result = dba::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
return $result;
}
}

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src/Core/Config/PreloadConfigAdapter.php Normal file
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<?php
namespace Friendica\Core\Config;
use dba;
use Exception;
use Friendica\BaseObject;
require_once 'include/dba.php';
/**
* Preload ConfigAdapter
*
* Minimize the number of database queries to retrieve configuration values at the cost of memory.
*
* @author Hypolite Petovan <mrpetovan@gmail.com>
*/
class PreloadConfigAdapter extends BaseObject implements IConfigAdapter
{
private $config_loaded = false;
public function __construct()
{
$this->load();
}
public function load($family = 'config')
{
if ($this->config_loaded) {
return;
}
$a = self::getApp();
$configs = dba::select('config', ['cat', 'v', 'k']);
while ($config = dba::fetch($configs)) {
$cat = $config['cat'];
$k = $config['k'];
$value = (preg_match("|^a:[0-9]+:{.*}$|s", $config['v']) ? unserialize($config['v']) : $config['v']);
if ($cat === 'config') {
$a->config[$k] = $value;
} else {
$a->config[$cat][$k] = $value;
}
}
dba::close($configs);
$this->config_loaded = true;
}
public function get($cat, $k, $default_value = null, $refresh = false)
{
$a = self::getApp();
$return = $default_value;
if ($cat === 'config') {
if (isset($a->config[$k])) {
$return = $a->config[$k];
}
} else {
if (isset($a->config[$cat][$k])) {
$return = $a->config[$cat][$k];
}
}
return $return;
}
public function set($cat, $k, $value)
{
$a = self::getApp();
// We store our setting values as strings.
// So we have to do the conversion here so that the compare below works.
// The exception are array values.
$compare_value = !is_array($value) ? (string)$value : $value;
if ($this->get($cat, $k) === $compare_value) {
return true;
}
if ($cat === 'config') {
$a->config[$k] = $value;
} else {
$a->config[$cat][$k] = $value;
}
// manage array value
$dbvalue = is_array($value) ? serialize($value) : $value;
$result = dba::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $k], true);
if (!$result) {
throw new Exception('Unable to store config value in [' . $cat . '][' . $k . ']');
}
return true;
}
public function delete($cat, $k)
{
$a = self::getApp();
if ($cat === 'config') {
if (isset($a->config[$k])) {
unset($a->config[$k]);
}
} else {
if (isset($a->config[$cat][$k])) {
unset($a->config[$cat][$k]);
}
}
$result = dba::delete('config', ['cat' => $cat, 'k' => $k]);
return $result;
}
}

102
src/Core/Config/PreloadPConfigAdapter.php Normal file
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<?php
namespace Friendica\Core\Config;
use dba;
use Exception;
use Friendica\BaseObject;
require_once 'include/dba.php';
/**
* Preload PConfigAdapter
*
* Minimize the number of database queries to retrieve configuration values at the cost of memory.
*
* @author Hypolite Petovan <mrpetovan@gmail.com>
*/
class PreloadPConfigAdapter extends BaseObject implements IPConfigAdapter
{
private $config_loaded = false;
public function __construct($uid)
{
$this->load($uid, 'config');
}
public function load($uid, $family)
{
if ($this->config_loaded) {
return;
}
$a = self::getApp();
$pconfigs = dba::select('pconfig', ['cat', 'v', 'k'], ['uid' => $uid]);
while ($pconfig = dba::fetch($pconfigs)) {
$cat = $pconfig['cat'];
$k = $pconfig['k'];
$value = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
$a->config[$uid][$cat][$k] = $value;
}
dba::close($pconfigs);
$this->config_loaded = true;
}
public function get($uid, $cat, $k, $default_value = null, $refresh = false)
{
$a = self::getApp();
$return = $default_value;
if (isset($a->config[$uid][$cat][$k])) {
$return = $a->config[$uid][$cat][$k];
}
return $return;
}
public function set($uid, $cat, $k, $value)
{
$a = self::getApp();
// We store our setting values as strings.
// So we have to do the conversion here so that the compare below works.
// The exception are array values.
$compare_value = !is_array($value) ? (string)$value : $value;
if ($this->get($uid, $cat, $k) === $compare_value) {
return true;
}
$a->config[$uid][$cat][$k] = $value;
// manage array value
$dbvalue = is_array($value) ? serialize($value) : $value;
$result = dba::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $k], true);
if (!$result) {
throw new Exception('Unable to store config value in [' . $uid . '][' . $cat . '][' . $k . ']');
}
return true;
}
public function delete($uid, $cat, $k)
{
$a = self::getApp();
if (!isset($a->config[$uid][$cat][$k])) {
return true;
}
unset($a->config[$uid][$cat][$k]);
$result = dba::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
return $result;
}
}