class Mongo::Cluster::Topology::ReplicaSetNoPrimary
Defines behavior when a cluster is in replica set topology, and there is no primary or the primary has not yet been discovered by the driver.
@since 2.0.0
Constants
- NAME
The display name for the topology.
@since 2.0.0 @deprecated
Public Instance Methods
Get the display name.
@example Get the display name.
ReplicaSet.display_name
@return [ String ] The display name.
@since 2.0.0
# File lib/mongo/cluster/topology/replica_set_no_primary.rb, line 40 def display_name self.class.name.gsub(/.*::/, '') end
Determine if the topology would select a readable server for the provided candidates and read preference.
@example Is a readable server present?
topology.has_readable_server?(cluster, server_selector)
@param [ Cluster
] cluster The cluster. @param [ ServerSelector
] server_selector The server
selector.
@return [ true, false ] If a readable server is present.
@since 2.4.0
# File lib/mongo/cluster/topology/replica_set_no_primary.rb, line 76 def has_readable_server?(cluster, server_selector = nil) (server_selector || ServerSelector.primary).candidates(cluster).any? end
Determine if the topology would select a writable server for the provided candidates.
@example Is a writable server present?
topology.has_writable_server?(servers)
@param [ Cluster
] cluster The cluster.
@return [ true, false ] If a writable server is present.
@since 2.4.0
# File lib/mongo/cluster/topology/replica_set_no_primary.rb, line 91 def has_writable_server?(cluster) cluster.servers.any?{ |server| server.primary? } end
A replica set topology is a replica set.
@example Is the topology a replica set?
topology.replica_set?
@return [ true ] Always true.
@since 2.0.0
# File lib/mongo/cluster/topology/replica_set_no_primary.rb, line 103 def replica_set?; true; end
Select appropriate servers for this topology.
@example Select the servers.
ReplicaSet.servers(servers)
@param [ Array<Server> ] servers The known servers.
@return [ Array<Server> ] The servers in the replica set.
@since 2.0.0
# File lib/mongo/cluster/topology/replica_set_no_primary.rb, line 115 def servers(servers) servers.select do |server| (replica_set_name.nil? || server.replica_set_name == replica_set_name) && server.primary? || server.secondary? end end
A replica set topology is not sharded.
@example Is the topology sharded?
ReplicaSet.sharded?
@return [ false ] Always false.
@since 2.0.0
# File lib/mongo/cluster/topology/replica_set_no_primary.rb, line 130 def sharded?; false; end
A replica set topology is not single.
@example Is the topology single?
ReplicaSet.single?
@return [ false ] Always false.
@since 2.0.0
# File lib/mongo/cluster/topology/replica_set_no_primary.rb, line 140 def single?; false; end
@note This method is experimental and subject to change.
@api experimental @since 2.7.0
# File lib/mongo/cluster/topology/replica_set_no_primary.rb, line 48 def summary details = server_descriptions.keys.join(',') if details != '' details << ',' end details << "name=#{replica_set_name}" if max_set_version details << ",v=#{max_set_version}" end if max_election_id details << ",e=#{max_election_id && max_election_id.to_s.sub(/^0+/, '')}" end "#{display_name}[#{details}]" end
A replica set topology is not unknown.
@example Is the topology unknown?
ReplicaSet.unknown?
@return [ false ] Always false.
@since 2.0.0
# File lib/mongo/cluster/topology/replica_set_no_primary.rb, line 150 def unknown?; false; end
Private Instance Methods
Mongo::Cluster::Topology::Base#validate_options
# File lib/mongo/cluster/topology/replica_set_no_primary.rb, line 154 def validate_options(options, cluster) if options[:replica_set_name] == '' options = options.merge(replica_set_name: nil) end unless options[:replica_set_name] raise ArgumentError, 'Cannot instantiate a replica set topology without a replica set name' end super(options, cluster) end