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Spawn is the core lib for Spawn Actors System
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lib/actors/node/default_split_brain_detector.ex
defmodule Actors.Node.DefaultSplitBrainDetector do
@moduledoc false
@behaviour Actors.SplitBrainDetector
alias Actors.Exceptions.NetworkPartitionException
@activated_status "ACTIVATED"
@impl true
def check_network_partition(actor_id, status, node) do
if do_check(actor_id, status, node) do
{:error, :network_partition_detected}
else
{:ok, :continue}
end
end
@impl true
def check_network_partition!(actor_id, status, node) do
if do_check(actor_id, status, node) do
raise NetworkPartitionException
end
end
defp do_check(actor_id, status, node) do
host_actor_found? =
actor_id
|> Spawn.Cluster.StateHandoff.Manager.get()
|> Enum.find_value(false, &(&1.node == Node.self()))
status === @activated_status and node != Atom.to_string(Node.self()) and not host_actor_found?
end
end