/**
* @param array $conf An associative array with one member:
* - connection: The IDatabase connection object
*/
public function __construct(array $conf)
{
parent::__construct($conf);
if (!isset($conf['connection'])) {
throw new InvalidArgumentException("Missing 'connection' argument.");
}
$lb = new LoadBalancerSingle(array_merge($this->baseLoadBalancerParams(), $conf));
$this->initLoadBalancer($lb);
$this->lb = $lb;
}
/**
* @see LBFactory::__construct()
* @param array $conf Parameters of LBFactory::__construct() as well as:
* - servers : list of server configuration maps to Database::factory().
* Additionally, the server maps should have a 'load' key, which is used to decide
* how often clients connect to one server verses the others. A 'max lag' key should
* also be set on server maps, indicating how stale the data can be before the load
* balancer tries to avoid using it. The map can have 'is static' set to disable blocking
* replication sync checks (intended for archive servers with unchanging data).
* - externalClusters : map of cluster names to server arrays. The servers arrays have the
* same format as "servers" above.
*/
public function __construct(array $conf)
{
parent::__construct($conf);
$this->servers = isset($conf['servers']) ? $conf['servers'] : [];
foreach ($this->servers as $i => $server) {
if ($i == 0) {
$this->servers[$i]['master'] = true;
} else {
$this->servers[$i]['replica'] = true;
}
}
$this->externalClusters = isset($conf['externalClusters']) ? $conf['externalClusters'] : [];
$this->loadMonitorClass = isset($conf['loadMonitorClass']) ? $conf['loadMonitorClass'] : 'LoadMonitor';
}
/**
* @param array $conf
* @throws MWException
*/
public function __construct(array $conf)
{
parent::__construct($conf);
$this->chronProt = new ChronologyProtector();
$this->conf = $conf;
$required = array('sectionsByDB', 'sectionLoads', 'serverTemplate');
$optional = array('groupLoadsBySection', 'groupLoadsByDB', 'hostsByName', 'externalLoads', 'externalTemplateOverrides', 'templateOverridesByServer', 'templateOverridesByCluster', 'masterTemplateOverrides', 'readOnlyBySection', 'loadMonitorClass');
foreach ($required as $key) {
if (!isset($conf[$key])) {
throw new MWException(__CLASS__ . ": {$key} is required in configuration");
}
$this->{$key} = $conf[$key];
}
foreach ($optional as $key) {
if (isset($conf[$key])) {
$this->{$key} = $conf[$key];
}
}
}
public function __construct(array $conf)
{
parent::__construct($conf);
$this->loadMonitorClass = isset($conf['loadMonitorClass']) ? $conf['loadMonitorClass'] : null;
}
/**
* @param array $conf An associative array with one member:
* - connection: The DatabaseBase connection object
*/
public function __construct(array $conf)
{
parent::__construct($conf);
$this->lb = new LoadBalancerSingle(['readOnlyReason' => $this->readOnlyReason, 'trxProfiler' => $this->trxProfiler] + $conf);
}
public function __construct(array $conf)
{
parent::__construct($conf);
$this->chronProt = new ChronologyProtector();
$this->loadMonitorClass = isset($conf['loadMonitorClass']) ? $conf['loadMonitorClass'] : null;
}
/**
* @see LBFactory::__construct()
*
* Template override precedence (highest => lowest):
* - templateOverridesByServer
* - masterTemplateOverrides
* - templateOverridesBySection/templateOverridesByCluster
* - externalTemplateOverrides
* - serverTemplate
* Overrides only work on top level keys (so nested values will not be merged).
*
* Server configuration maps should be of the format Database::factory() requires.
* Additionally, a 'max lag' key should also be set on server maps, indicating how stale the
* data can be before the load balancer tries to avoid using it. The map can have 'is static'
* set to disable blocking replication sync checks (intended for archive servers with
* unchanging data).
*
* @param array $conf Parameters of LBFactory::__construct() as well as:
* - sectionsByDB Map of database names to section names.
* - sectionLoads 2-d map. For each section, gives a map of server names to
* load ratios. For example:
* [
* 'section1' => [
* 'db1' => 100,
* 'db2' => 100
* ]
* ]
* - serverTemplate Server configuration map intended for Database::factory().
* Note that "host", "hostName" and "load" entries will be
* overridden by "sectionLoads" and "hostsByName".
* - groupLoadsBySection 3-d map giving server load ratios for each section/group.
* For example:
* [
* 'section1' => [
* 'group1' => [
* 'db1' => 100,
* 'db2' => 100
* ]
* ]
* ]
* - groupLoadsByDB 3-d map giving server load ratios by DB name.
* - hostsByName Map of hostname to IP address.
* - externalLoads Map of external storage cluster name to server load map.
* - externalTemplateOverrides Set of server configuration maps overriding
* "serverTemplate" for external storage.
* - templateOverridesByServer 2-d map overriding "serverTemplate" and
* "externalTemplateOverrides" on a server-by-server basis.
* Applies to both core and external storage.
* - templateOverridesBySection 2-d map overriding the server configuration maps by section.
* - templateOverridesByCluster 2-d map overriding the server configuration maps by external
* storage cluster.
* - masterTemplateOverrides Server configuration map overrides for all master servers.
* - loadMonitorClass Name of the LoadMonitor class to always use.
* - readOnlyBySection A map of section name to read-only message.
* Missing or false for read/write.
*/
public function __construct(array $conf)
{
parent::__construct($conf);
$this->conf = $conf;
$required = ['sectionsByDB', 'sectionLoads', 'serverTemplate'];
$optional = ['groupLoadsBySection', 'groupLoadsByDB', 'hostsByName', 'externalLoads', 'externalTemplateOverrides', 'templateOverridesByServer', 'templateOverridesByCluster', 'templateOverridesBySection', 'masterTemplateOverrides', 'readOnlyBySection', 'loadMonitorClass'];
foreach ($required as $key) {
if (!isset($conf[$key])) {
throw new InvalidArgumentException(__CLASS__ . ": {$key} is required.");
}
$this->{$key} = $conf[$key];
}
foreach ($optional as $key) {
if (isset($conf[$key])) {
$this->{$key} = $conf[$key];
}
}
}
/**
* @param array $conf An associative array with one member:
* - connection: The DatabaseBase connection object
*/
public function __construct(array $conf)
{
parent::__construct($conf);
$this->lb = new LoadBalancerSingle($conf);
}
/**
* @param array $conf An associative array with one member:
* - connection: The DatabaseBase connection object
*/
public function __construct(array $conf)
{
parent::__construct($conf);
$conf['readOnlyReason'] = $this->readOnlyReason;
$this->lb = new LoadBalancerSingle($conf);
}
