feat: add device deletion started event (astarte-platform#126)

protoc --elixir_out=. --elixir_opt=package_prefix=astarte.core.triggers.simple_events lib/astarte_core/triggers/simple_events/*.proto

the event has been assigned code 21 to leave space to device creation

Signed-off-by: Francesco Noacco <francesco.noacco@secomind.com>

Author: noaccOS

lib/astarte_core/triggers/simple_events/device_deletion_started_event.pb.ex

@@ -0,0 +1,5 @@
+defmodule Astarte.Core.Triggers.SimpleEvents.DeviceDeletionStartedEvent do
+  @moduledoc false
+
+  use Protobuf, protoc_gen_elixir_version: "0.15.0", syntax: :proto3
+end

lib/astarte_core/triggers/simple_events/device_deletion_started_event.proto

@@ -0,0 +1,22 @@
+//
+// This file is part of Astarte.
+//
+// Copyright 2025 SECO Mind Srl
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+syntax = "proto3";
+
+message DeviceDeletionStartedEvent {
+}

lib/astarte_core/triggers/simple_events/simple_event.pb.ex

@@ -77,6 +77,11 @@ defmodule Astarte.Core.Triggers.SimpleEvents.SimpleEvent do
     json_name: "deviceErrorEvent",
     oneof: 0
 
+  field :device_deletion_started_event, 21,
+    type: Astarte.Core.Triggers.SimpleEvents.DeviceDeletionStartedEvent,
+    json_name: "deviceDeletionStartedEvent",
+    oneof: 0
+
   field :device_deletion_finished_event, 22,
     type: Astarte.Core.Triggers.SimpleEvents.DeviceDeletionFinishedEvent,
     json_name: "deviceDeletionFinishedEvent",

lib/astarte_core/triggers/simple_events/simple_event.proto

@@ -20,6 +20,7 @@ syntax = "proto3";
 
 import "lib/astarte_core/triggers/simple_events/device_connected_event.proto";
 import "lib/astarte_core/triggers/simple_events/device_disconnected_event.proto";
+import "lib/astarte_core/triggers/simple_events/device_deletion_started_event.proto";
 import "lib/astarte_core/triggers/simple_events/device_deletion_finished_event.proto";
 import "lib/astarte_core/triggers/simple_events/device_error_event.proto";
 import "lib/astarte_core/triggers/simple_events/incoming_data_event.proto";
@@ -57,6 +58,7 @@ message SimpleEvent {
         InterfaceRemovedEvent interface_removed_event = 16;
         InterfaceMinorUpdatedEvent interface_minor_updated_event = 17;
         DeviceErrorEvent device_error_event = 19;
+        DeviceDeletionStartedEvent device_deletion_started_event = 21;
         DeviceDeletionFinishedEvent device_deletion_finished_event = 22;
     }
 }