PHP Manual
MongoDB\Driver
The MongoDB\Driver\TopologyDescription class

The MongoDB\Driver\TopologyDescription class

(mongodb >=1.13.0)

Introduction

The MongoDB\Driver\TopologyDescription class is a value object that represents a topology to which the driver is connected. Instances of this class are returned by MongoDB\Driver\Monitoring\TopologyChangedEvent methods.

Class synopsis

final class MongoDB\Driver\TopologyDescription {

/* Constants */

const string TYPE_UNKNOWN = "Unknown";

const string TYPE_SINGLE = "Single";

const string TYPE_SHARDED = "Sharded";

const string TYPE_REPLICA_SET_NO_PRIMARY = "ReplicaSetNoPrimary";

const string TYPE_REPLICA_SET_WITH_PRIMARY = "ReplicaSetWithPrimary";

const string TYPE_LOAD_BALANCED = "LoadBalanced";

/* Methods */

final public getServers(): array

final public getType(): string

final public hasReadableServer(?MongoDB\Driver\ReadPreference $readPreference = null): bool

final public hasWritableServer(): bool

}

Predefined Constants

MongoDB\Driver\TopologyDescription::TYPE_UNKNOWN: Unknown topology type, returned by MongoDB\Driver\TopologyDescription::getType().
MongoDB\Driver\TopologyDescription::TYPE_SINGLE: Single server (i.e. direct connection), returned by MongoDB\Driver\TopologyDescription::getType().
MongoDB\Driver\TopologyDescription::TYPE_SHARDED: Sharded cluster, returned by MongoDB\Driver\TopologyDescription::getType().
MongoDB\Driver\TopologyDescription::TYPE_REPLICA_SET_NO_PRIMARY: Replica set with no primary server, returned by MongoDB\Driver\TopologyDescription::getType().
MongoDB\Driver\TopologyDescription::TYPE_REPLICA_SET_WITH_PRIMARY: Replica set with a primary server, returned by MongoDB\Driver\TopologyDescription::getType().
MongoDB\Driver\TopologyDescription::TYPE_LOAD_BALANCED: Load balanced topology, returned by MongoDB\Driver\TopologyDescription::getType().