Class: Mongo::Cluster::Topology::ReplicaSetNoPrimary

Inherits:
Base
  • Object
show all
Defined in:
lib/mongo/cluster/topology/replica_set_no_primary.rb

Overview

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

Direct Known Subclasses

ReplicaSetWithPrimary

Constant Summary collapse

NAME =
Deprecated.

The display name for the topology.

Since:

  • 2.0.0

'Replica Set'.freeze

Constants included from Loggable

Loggable::PREFIX

Instance Attribute Summary

Attributes inherited from Base

#compatibility_error, #logical_session_timeout, #monitoring, #options, #server_descriptions

Attributes included from Monitoring::Publishable

#monitoring

Instance Method Summary collapse

Methods inherited from Base

#addresses, #compatible?, #data_bearing_servers?, #initialize, #max_election_id, #max_set_version, #new_max_election_id, #new_max_set_version, #replica_set_name

Methods included from Monitoring::Publishable

#publish_event, #publish_sdam_event

Methods included from Loggable

#log_debug, #log_error, #log_fatal, #log_info, #log_warn, #logger

Constructor Details

This class inherits a constructor from Mongo::Cluster::Topology::Base

Instance Method Details

#display_nameString

Get the display name.

Examples:

Get the display name.

ReplicaSet.display_name

Returns:

  • (String)

    The display name.

Since:

  • 2.0.0



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# File 'lib/mongo/cluster/topology/replica_set_no_primary.rb', line 40

def display_name
  self.class.name.gsub(/.*::/, '')
end

#has_readable_server?(cluster, server_selector = nil) ⇒ true, false

Determine if the topology would select a readable server for the provided candidates and read preference.

Examples:

Is a readable server present?

topology.has_readable_server?(cluster, server_selector)

Parameters:

  • cluster (Cluster)

    The cluster.

  • server_selector (ServerSelector) (defaults to: nil)

    The server selector.

Returns:

  • (true, false)

    If a readable server is present.

Since:

  • 2.4.0



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# File 'lib/mongo/cluster/topology/replica_set_no_primary.rb', line 76

def has_readable_server?(cluster, server_selector = nil)
  (server_selector || ServerSelector.get(mode: :primary)).candidates(cluster).any?
end

#has_writable_server?(cluster) ⇒ true, false

Determine if the topology would select a writable server for the provided candidates.

Examples:

Is a writable server present?

topology.has_writable_server?(servers)

Parameters:

  • cluster (Cluster)

    The cluster.

Returns:

  • (true, false)

    If a writable server is present.

Since:

  • 2.4.0



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# File 'lib/mongo/cluster/topology/replica_set_no_primary.rb', line 91

def has_writable_server?(cluster)
  cluster.servers.any?{ |server| server.primary? }
end

#replica_set?true

A replica set topology is a replica set.

Examples:

Is the topology a replica set?

topology.replica_set?

Returns:

  • (true)

    Always true.

Since:

  • 2.0.0



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# File 'lib/mongo/cluster/topology/replica_set_no_primary.rb', line 103

def replica_set?; true; end

#servers(servers) ⇒ Array<Server>

Select appropriate servers for this topology.

Examples:

Select the servers.

ReplicaSet.servers(servers)

Parameters:

  • servers (Array<Server>)

    The known servers.

Returns:

  • (Array<Server>)

    The servers in the replica set.

Since:

  • 2.0.0



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# 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

#sharded?false

A replica set topology is not sharded.

Examples:

Is the topology sharded?

ReplicaSet.sharded?

Returns:

  • (false)

    Always false.

Since:

  • 2.0.0



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# File 'lib/mongo/cluster/topology/replica_set_no_primary.rb', line 130

def sharded?; false; end

#single?false

A replica set topology is not single.

Examples:

Is the topology single?

ReplicaSet.single?

Returns:

  • (false)

    Always false.

Since:

  • 2.0.0



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# File 'lib/mongo/cluster/topology/replica_set_no_primary.rb', line 140

def single?; false; end

#summaryObject

Note:

This method is experimental and subject to change.

Since:

  • 2.7.0



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# 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

#unknown?false

A replica set topology is not unknown.

Examples:

Is the topology unknown?

ReplicaSet.unknown?

Returns:

  • (false)

    Always false.

Since:

  • 2.0.0



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# File 'lib/mongo/cluster/topology/replica_set_no_primary.rb', line 150

def unknown?; false; end