[Paused] Remove code associated with the old orchestrator

.dialyzer_ignore.exs

@@ -1,7 +1,6 @@
 [
   {"lib/x509/certificate.ex", "Unknown type: X509.ASN1.record/1."},
   {"lib/x509/certificate/extension.ex", "Unknown type: X509.ASN1.record/1."},
-  {"lib/nerves_hub/deployments/orchestrator.ex", :unmatched_return, 1},
   {"lib/nerves_hub_web/channels/device_channel.ex", :unmatched_return, 1},
   {"lib/nerves_hub_web/channels/device_socket.ex", :unmatched_return, 1}
 ]

config/runtime.exs

@@ -50,9 +50,7 @@ config :nerves_hub,
         System.get_env("FEATURES_HEALTH_UI_POLLING_SECONDS", "60") |> String.to_integer()
     ]
   ],
-  new_ui: System.get_env("NEW_UI_ENABLED", "true") == "true",
-  display_deployment_orchestrator_strategy:
-    System.get_env("DISPLAY_DEPLOYMENT_ORCHESTRATOR_STRATEGY", "false") == "true"
+  new_ui: System.get_env("NEW_UI_ENABLED", "true") == "true"
 
 config :nerves_hub, :device_socket_drainer,
   batch_size: String.to_integer(System.get_env("DEVICE_SOCKET_DRAINER_BATCH_SIZE", "1000")),

lib/nerves_hub/application.ex

@@ -28,7 +28,6 @@ defmodule NervesHub.Application do
         {Ecto.Migrator,
          repos: Application.fetch_env!(:nerves_hub, :ecto_repos),
          skip: Application.get_env(:nerves_hub, :database_auto_migrator) != true},
-        {Registry, keys: :unique, name: NervesHub.Devices.Registry},
         {Finch, name: Swoosh.Finch}
       ] ++
         NervesHub.StatsdMetricsReporter.config() ++
@@ -75,13 +74,11 @@ defmodule NervesHub.Application do
 
   defp deployments_orchestrator("test"), do: []
 
-  # When running in the default `multi` mode, start a deployments orchestrator supervisor
-  # on every node. But when running in `clustered` mode, run the `ProcessHub` supervisor
-  # on the `web` or `all` nodes only.
+  # Only run the `ProcessHub` supervisor on the `web` or `all` nodes.
   defp deployments_orchestrator(_) do
     case Application.get_env(:nerves_hub, :app) do
       ["device"] ->
-        [NervesHub.Deployments.Supervisor]
+        []
 
       _ ->
         [

lib/nerves_hub/deployments.ex

@@ -22,11 +22,10 @@
     Repo.all(Deployment)
   end
 
-  @spec should_run_in_distributed_orchestrator() :: [Deployment.t()]
-  def should_run_in_distributed_orchestrator() do
+  @spec should_run_orchestrator() :: [Deployment.t()]
+  def should_run_orchestrator() do
     Deployment
     |> where(is_active: true)
-    |> where(orchestrator_strategy: :distributed)
     |> Repo.all()
   end
 
@@ -293,14 +292,6 @@
           end
         end
 
-        if Map.has_key?(changeset.changes, :orchestrator_strategy) do
-          if deployment.orchestrator_strategy == :distributed do
-            start_deployments_distributed_orchestrator_event(deployment)
-          else
-            shutdown_deployments_distributed_orchestrator_event(deployment)
-          end
-        end
-
         {:ok, deployment}
 
       {:error, changeset} ->
@@ -389,7 +380,7 @@
   def broadcast(deployment, event, payload \\ %{})
 
   def broadcast(:none, event, payload) do
     Phoenix.Channel.Server.broadcast(
       NervesHub.PubSub,
       "deployment:none",
       event,
@@ -397,17 +388,8 @@
     )
   end
 
-  def broadcast(:monitor, event, payload) do
-    Phoenix.Channel.Server.broadcast(
-      NervesHub.PubSub,
-      "deployment:monitor",
-      event,
-      payload
-    )
-  end
-
   def broadcast(%Deployment{id: id}, event, payload) do
     Phoenix.Channel.Server.broadcast(
       NervesHub.PubSub,
       "deployment:#{id}",
       event,
@@ -603,56 +585,39 @@
   end
 
   def deployment_created_event(deployment) do
-    # the old orchestrator
-    _ = broadcast(:monitor, "deployments/new", %{deployment_id: deployment.id})
-
-    # the new orchestrator
-    _ = DistributedOrchestrator.start_orchestrator(deployment)
-
-    :ok
-  end
-
-  def start_deployments_distributed_orchestrator_event(deployment) do
     DistributedOrchestrator.start_orchestrator(deployment)
 
     :ok
   end
 
-  def shutdown_deployments_distributed_orchestrator_event(deployment) do
-    Phoenix.Channel.Server.broadcast(
-      NervesHub.PubSub,
-      "orchestrator:deployment:#{deployment.id}",
-      "deactivated",
-      %{}
-    )
-
-    :ok
-  end
-
   def deployment_activated_event(deployment) do
     DistributedOrchestrator.start_orchestrator(deployment)
 
     :ok
   end
 
   def deployment_deactivated_event(deployment) do
-    Phoenix.Channel.Server.broadcast(
-      NervesHub.PubSub,
-      "orchestrator:deployment:#{deployment.id}",
-      "deactivated",
-      %{}
-    )
+    :ok =
+      Phoenix.Channel.Server.broadcast(
+        NervesHub.PubSub,
+        "orchestrator:deployment:#{deployment.id}",
+        "deactivated",
+        %{}
+      )
 
     :ok
   end
 
   def deployment_deleted_event(deployment) do
-    _ =
-      if deployment.orchestrator_strategy == :distributed do
-        broadcast(deployment, "deleted")
-      end
+    :ok =
+      Phoenix.Channel.Server.broadcast(
+        NervesHub.PubSub,
+        "orchestrator:deployment:#{deployment.id}",
+        "deactivated",
+        %{}
+      )
 
-    broadcast(:monitor, "deployments/delete", %{deployment_id: deployment.id})
+    :ok = broadcast(deployment, "deleted")
 
     :ok
   end

lib/nerves_hub/deployments/deployment.ex

@@ -39,8 +39,7 @@ defmodule NervesHub.Deployments.Deployment do
     :penalty_timeout_minutes,
     :connecting_code,
     :total_updating_devices,
-    :current_updated_devices,
-    :orchestrator_strategy
+    :current_updated_devices
   ]
 
   schema "deployments" do
@@ -74,9 +73,6 @@ defmodule NervesHub.Deployments.Deployment do
 
     field(:device_count, :integer, virtual: true)
 
-    # temporary addition while we feature test a new deployment management strategy
-    field(:orchestrator_strategy, Ecto.Enum, values: [:multi, :distributed], default: :multi)
-
     timestamps()
   end
 

lib/nerves_hub/deployments/distributed/orchestrator.ex

@@ -251,12 +251,7 @@ defmodule NervesHub.Deployments.Distributed.Orchestrator do
       ) do
     {:ok, deployment} = Deployments.get_deployment(state.deployment)
 
-    # shutdown the orchestrator if the deployment is updated to use the old `:multi` strategy
-    if deployment.orchestrator_strategy == :distributed do
-      maybe_trigger_update(%{state | deployment: deployment})
-    else
-      {:stop, :normal, state}
-    end
+    maybe_trigger_update(%{state | deployment: deployment})
   end
 
   def handle_info(%Broadcast{topic: "deployment:" <> _, event: "deleted"}, state) do
@@ -276,10 +271,13 @@ defmodule NervesHub.Deployments.Distributed.Orchestrator do
     maybe_trigger_update(state)
   end
 
-  def start_orchestrator(
-        %Deployment{is_active: true, orchestrator_strategy: :distributed} = deployment
-      ) do
-    ProcessHub.start_child(:deployment_orchestrators, child_spec(deployment))
+  def start_orchestrator(%Deployment{is_active: true} = deployment) do
+    _ =
+      if Application.get_env(:nerves_hub, :deploy_env) != "test" do
+        ProcessHub.start_child(:deployment_orchestrators, child_spec(deployment))
+      end
+
+    :ok
   end
 
   def start_orchestrator(_) do

lib/nerves_hub/deployments/distributed/orchestrator_registration.ex

@@ -31,7 +31,7 @@ defmodule NervesHub.Deployments.Distributed.OrchestratorRegistration do
   @impl GenServer
   def handle_info(:start_orchestrators, _) do
     _ =
-      Deployments.should_run_in_distributed_orchestrator()
+      Deployments.should_run_orchestrator()
       |> Enum.map(fn deployment ->
         Orchestrator.child_spec(deployment)
       end)