Fix bug where ID is not set

On HEAD~ we remove the ID from the class, which created a bug. Given we
don't need the ID anymore, it has been removed and simplified.

lib/gitlab/gitaly_client.rb

@@ -296,15 +296,14 @@ module Gitlab
     def self.add_call_details(details)
       return unless Gitlab::SafeRequestStore[:peek_enabled]
 
-      Gitlab::SafeRequestStore['gitaly_call_details'] ||= {}
-      Gitlab::SafeRequestStore['gitaly_call_details'][id] ||= {}
-      Gitlab::SafeRequestStore['gitaly_call_details'][id].merge!(details)
+      Gitlab::SafeRequestStore['gitaly_call_details'] ||= []
+      Gitlab::SafeRequestStore['gitaly_call_details'] << details
     end
 
     def self.list_call_details
-      return {} unless Gitlab::SafeRequestStore[:peek_enabled]
+      return [] unless Gitlab::SafeRequestStore[:peek_enabled]
 
-      Gitlab::SafeRequestStore['gitaly_call_details'] || {}
+      Gitlab::SafeRequestStore['gitaly_call_details'] || []
     end
 
     def self.expected_server_version

lib/peek/views/gitaly.rb

@@ -23,7 +23,6 @@ module Peek
 
       def details
         ::Gitlab::GitalyClient.list_call_details
-          .values
           .sort { |a, b| b[:duration] <=> a[:duration] }
           .map(&method(:format_call_details))
       end

spec/lib/gitlab/gitaly_client_spec.rb

@@ -216,4 +216,29 @@ describe Gitlab::GitalyClient do
       end
     end
   end
+
+  describe 'Peek Performance bar details' do
+    let(:gitaly_server) { Gitaly::Server.all.first }
+
+    before do
+      Gitlab::SafeRequestStore[:peek_enabled] = true
+    end
+
+    context 'when the request store is active', :request_store do
+      it 'records call details if a RPC is called' do
+        gitaly_server.server_version
+
+        expect(described_class.list_call_details).not_to be_empty
+        expect(described_class.list_call_details.size).to be(1)
+      end
+    end
+
+    context 'when no request store is active' do
+      it 'records nothing' do
+        gitaly_server.server_version
+
+        expect(described_class.list_call_details).to be_empty
+      end
+    end
+  end
 end