Class: EventStoreClient::GRPC::Cluster::GossipDiscover

Inherits:
Object
  • Object
show all
Defined in:
lib/event_store_client/adapters/grpc/cluster/gossip_discover.rb

Constant Summary collapse

DiscoverError = 
Class.new(StandardError)
READ_ONLY_STATES =

Order is important - it plays role of states priority as well

%i[ReadOnlyReplica PreReadOnlyReplica ReadOnlyLeaderless].freeze
ALLOWED_NODE_STATES = 
(%i[Leader Follower] + READ_ONLY_STATES).freeze

Instance Method Summary collapse

Constructor Details

#initialize(config:) ⇒ GossipDiscover

Returns a new instance of GossipDiscover.

Parameters:



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# File 'lib/event_store_client/adapters/grpc/cluster/gossip_discover.rb', line 20

def initialize(config:)
  @config = config
end

Instance Method Details

#call(nodes, failed_member:) ⇒ EventStoreClient::GRPC::Cluster::Member

Parameters:

Returns:

Raises:



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# File 'lib/event_store_client/adapters/grpc/cluster/gossip_discover.rb', line 28

def call(nodes, failed_member:)
  nodes = sort_nodes(nodes, failed_member)

  attempts = config.eventstore_url.max_discover_attempts
  attempts.times do
    nodes.each do |node|
      suitable_member = suitable_member_of_node(node)
      next unless suitable_member

      return suitable_member
    end

    sleep(config.eventstore_url.discover_interval / 1000.0)
  end

  raise DiscoverError, "Failed to discover suitable host after #{attempts} attempts."
end