Remove app_server_type from top level usage ping

App server type is moved from top level usage ping into topology
element.

changelogs/unreleased/225632-remove-app-server-type-from-top-level-usage-ping.yml

+---
+title: Remove app_server_type from top level usage ping
+merge_request: 37279
+author:
+type: other

doc/development/telemetry/usage_ping.md

@@ -822,9 +822,6 @@ The following is example content of the Usage Ping payload.
     "adapter": "postgresql",
     "version": "9.6.15"
   },
-  "app_server": {
-    "type": "console"
-  },
   "avg_cycle_analytics": {
     "issue": {
       "average": 999,

lib/gitlab/usage_data.rb

@@ -261,17 +261,8 @@ module Gitlab
           database: {
             adapter: alt_usage_data { Gitlab::Database.adapter_name },
             version: alt_usage_data { Gitlab::Database.version }
-          },
-          app_server: { type: app_server_type }
           }
-      end
-
-      def app_server_type
-        Gitlab::Runtime.identify.to_s
-      rescue Gitlab::Runtime::IdentificationError => e
-        Gitlab::AppLogger.error(e.message)
-        Gitlab::ErrorTracking.track_exception(e)
-        'unknown_app_server_type'
+        }
       end
 
       def object_store_config(component)

spec/lib/gitlab/usage_data_spec.rb

@@ -574,10 +574,8 @@ RSpec.describe Gitlab::UsageData, :aggregate_failures do
       subject { described_class.components_usage_data }
 
       it 'gathers basic components usage data' do
-        stub_runtime(:puma)
         stub_application_setting(container_registry_vendor: 'gitlab', container_registry_version: 'x.y.z')
 
-        expect(subject[:app_server][:type]).to eq('puma')
         expect(subject[:gitlab_pages][:enabled]).to eq(Gitlab.config.pages.enabled)
         expect(subject[:gitlab_pages][:version]).to eq(Gitlab::Pages::VERSION)
         expect(subject[:git][:version]).to eq(Gitlab::Git.version)
@@ -591,32 +589,6 @@ RSpec.describe Gitlab::UsageData, :aggregate_failures do
         expect(subject[:container_registry][:vendor]).to eq('gitlab')
         expect(subject[:container_registry][:version]).to eq('x.y.z')
       end
-
-      def stub_runtime(runtime)
-        allow(Gitlab::Runtime).to receive(:identify).and_return(runtime)
-      end
-    end
-
-    describe '.app_server_type' do
-      subject { described_class.app_server_type }
-
-      it 'successfully identifies runtime and returns the identifier' do
-        expect(Gitlab::Runtime).to receive(:identify).and_return(:runtime_identifier)
-
-        is_expected.to eq('runtime_identifier')
-      end
-
-      context 'when runtime is not identified' do
-        let(:exception) { Gitlab::Runtime::IdentificationError.new('exception message from runtime identify') }
-
-        it 'logs the exception and returns unknown app server type' do
-          expect(Gitlab::Runtime).to receive(:identify).and_raise(exception)
-
-          expect(Gitlab::AppLogger).to receive(:error).with(exception.message)
-          expect(Gitlab::ErrorTracking).to receive(:track_exception).with(exception)
-          expect(subject).to eq('unknown_app_server_type')
-        end
-      end
     end
 
     describe '.object_store_config' do