discourse/lib/message_bus_diags.rb

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# frozen_string_literal: true
class MessageBusDiags
@host_info = {}
def self.my_id
@my_id ||= "#{Discourse.os_hostname}-#{Process.pid}"
end
def self.seen_host(name)
@host_info[name] = DateTime.now
end
def self.establish_peer_names
MessageBus.publish "/server-name", channel: "/server-name-reply/#{my_id}"
end
def self.seen_hosts
@host_info
end
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unless @subscribed
MessageBus.subscribe "/server-name-reply/#{my_id}" do |msg|
MessageBusDiags.seen_host(msg.data)
end
MessageBus.subscribe "/server-name" do |msg|
MessageBus.publish msg.data["channel"], MessageBusDiags.my_id
end
@subscribed = true
end
end