Initial work on PingManager

lib/ping_manager.rb

@@ -0,0 +1,54 @@
+class W3DHub
+  class PingManager
+    Container = Struct.new(:pinger, :last_ping_time_ms)
+    PING_INTERVAL = 60_000
+
+    def initialize
+      @containers = {}
+      @addresses = []
+    end
+
+    def monitor(task)
+      task.async do |subtask|
+        while BackgroundWorker.alive?
+          # activate new addresses
+          @addresses.each do |address|
+            @containers[address] ||= Container.new(Ping.new(address: address), -PING_INTERVAL * 2)
+          end
+
+          # cleanup old addresses
+          @containers.each_key do |key|
+            @containers.delete(key) unless @addresses.find { |a| a == key }
+          end
+
+          # ping the pingers
+          @containers.each_value do |container|
+            next unless Gosu.milliseconds - container.last_ping_time_ms >= PING_INTERVAL
+
+            container.last_ping_time_ms = Gosu.milliseconds
+
+            subtask.async do
+              container.pinger.ping
+              pp [container.pinger.address, container.pinger.average_ping]
+            end
+          end
+
+          sleep 0.001
+        end
+      end
+    end
+
+    def add_address(address)
+      @addresses << address
+      @addresses.uniq!
+    end
+
+    def ping_for(address)
+      @containers[address]&.pinger&.average_ping&.round || -1
+    end
+
+    def remove_address(address)
+      @addresses.delete(address)
+    end
+  end
+end