[#53] Accept more than one metric type

config/prod.exs

@@ -34,7 +34,8 @@ config :poa_backend,
 config :poa_backend,
        :metrics,
        [
-         :ethereum_metrics
+         :ethereum_metrics,
+         :networking_metrics
        ]
 
 # here we have to define the relationship between receivers and metric types. The format is {receiver_id, [metric_type]}.
@@ -42,7 +43,7 @@ config :poa_backend,
 config :poa_backend,
        :subscriptions,
        [
-         {:dashboard_receiver, [:ethereum_metrics]}
+         {:dashboard_receiver, [:ethereum_metrics, :networking_metrics]}
        ]
 
 # here we define the configuration for the Authorisation endpoint

lib/poa_backend/metrics/supervisor.ex

@@ -12,7 +12,7 @@ defmodule POABackend.Metrics.Supervisor do
     metrics = Application.get_env(:poa_backend, :metrics)
 
     children = for metric <- metrics do
-      worker(POABackend.Metric, [metric])
+      worker(POABackend.Metric, [metric], id: metric)
     end
 
     opts = [strategy: :one_for_one]