Mongo::getHosts

(PECL mongo >=1.1.0)

Mongo::getHosts — Updates status for all hosts associated with this

Описание

public array Mongo::getHosts ( void )

This method can only be used with a connection to a replica set. It returns the status of all of the hosts in the set.

See the query section of this manual for information on distributing reads to slaves.

Список параметров

У этой функции нет параметров.

Возвращаемые значения

Returns an array of information about the hosts in the set. Includes each host's hostname, its health (1 is healthy), its state (1 is primary, 2 is secondary, 0 is anything else), the amount of time it took to ping the server, and when the last ping occurred. For example, on a three-member replica set, it might look something like:

array(2) {
  ["A:27017"]=>
  array(4) {
    ["health"]=>
    int(1)
    ["state"]=>
    int(2)
    ["ping"]=>
    int(369)
    ["lastPing"]=>
    int(1309470644)
  }
  ["B:27017"]=>
  array(4) {
    ["health"]=>
    int(1)
    ["state"]=>
    int(1)
    ["ping"]=>
    int(139)
    ["lastPing"]=>
    int(1309470644)
  }
  ["C:27017"]=>
  array(4) {
    ["health"]=>
    int(1)
    ["state"]=>
    int(2)
    ["ping"]=>
    int(1012)
    ["lastPing"]=>
    int(1309470644)
  }
}

In the example above, B and C are secondaries (state 2). B is likely to be selected for queries if slaveOkay is set, as it has a lower ping time (and thus is likely closer or handling less load) than C.