Make messages for reaching storage limit clearer

Some messages shown in the terminal were phrased unclear on how to
reduce storage capacity. This change will make those messages clearer.

ee/app/services/namespaces/check_excess_storage_size_service.rb

@@ -39,6 +39,10 @@ module Namespaces
       end
     end
 
+    def base_message
+      s_("NamespaceStorageSize|push to your repository, create pipelines, create issues or add comments. To learn more about reducing storage capacity please visit our docs.")
+    end
+
     def formatted(number)
       number_to_human_size(number, delimiter: ',', precision: 2)
     end

ee/lib/ee/gitlab/repository_size_checker.rb

@@ -23,12 +23,13 @@ module EE
         [size, 0].max
       end
 
-      private
-
+      override :additional_repo_storage_available?
       def additional_repo_storage_available?
         !!namespace&.additional_repo_storage_by_namespace_enabled?
       end
 
+      private
+
       def total_repository_size_excess
         namespace&.total_repository_size_excess.to_i
       end

ee/spec/lib/ee/gitlab/repository_size_checker_spec.rb

@@ -193,4 +193,20 @@ RSpec.describe Gitlab::RepositorySizeChecker do
       include_examples 'checker size exceeded'
     end
   end
+
+  describe '#additional_repo_storage_available?' do
+    context 'when additional_repo_storage_by_namespace_enabled is true' do
+      it 'returns true' do
+        expect(subject.additional_repo_storage_available?).to eq(true)
+      end
+    end
+
+    context 'when additional_repo_storage_by_namespace_enabled is false' do
+      let(:additional_repo_storage_by_namespace_enabled) { false }
+
+      it 'returns false' do
+        expect(subject.additional_repo_storage_available?).to eq(false)
+      end
+    end
+  end
 end

lib/gitlab/repository_size_checker.rb

@@ -46,6 +46,10 @@ module Gitlab
       @error_message_object ||= ::Gitlab::RepositorySizeErrorMessage.new(self)
     end
 
+    def additional_repo_storage_available?
+      false
+    end
+
     private
 
     attr_reader :namespace

lib/gitlab/repository_size_error_message.rb

@@ -4,7 +4,7 @@ module Gitlab
   class RepositorySizeErrorMessage
     include ActiveSupport::NumberHelper
 
-    delegate :current_size, :limit, :exceeded_size, to: :@checker
+    delegate :current_size, :limit, :exceeded_size, :additional_repo_storage_available?, to: :@checker
 
     # @param checher [RepositorySizeChecker]
     def initialize(checker)
@@ -24,7 +24,11 @@ module Gitlab
     end
 
     def new_changes_error
-      "Your push to this repository would cause it to exceed the size limit of #{formatted(limit)} so it has been rejected. #{more_info_message}"
+      if additional_repo_storage_available?
+        "Your push to this repository has been rejected because it would exceed storage limits. Please contact your GitLab administrator for more information."
+      else
+        "Your push to this repository would cause it to exceed the size limit of #{formatted(limit)} so it has been rejected. #{more_info_message}"
+      end
     end
 
     def more_info_message

locale/gitlab.pot

@@ -17900,6 +17900,9 @@ msgid_plural "NamespaceStorageSize|You have reached the free storage limit of %{
 msgstr[0] ""
 msgstr[1] ""
 
+msgid "NamespaceStorageSize|push to your repository, create pipelines, create issues or add comments. To learn more about reducing storage capacity please visit our docs."
+msgstr ""
+
 msgid "NamespaceStorageSize|push to your repository, create pipelines, create issues or add comments. To reduce storage capacity, delete unused repositories, artifacts, wikis, issues, and pipelines."
 msgstr ""
 

spec/lib/gitlab/repository_size_checker_spec.rb

@@ -53,4 +53,10 @@ RSpec.describe Gitlab::RepositorySizeChecker do
   describe '#exceeded_size' do
     include_examples 'checker size exceeded'
   end
+
+  describe '#additional_repo_storage_available?' do
+    it 'returns false' do
+      expect(subject.additional_repo_storage_available?).to eq(false)
+    end
+  end
 end

spec/lib/gitlab/repository_size_error_message_spec.rb

@@ -53,8 +53,18 @@ RSpec.describe Gitlab::RepositorySizeErrorMessage do
     end
 
     describe '#new_changes_error' do
-      it 'returns the correct message' do
-        expect(message.new_changes_error).to eq("Your push to this repository would cause it to exceed the size limit of 10 MB so it has been rejected. #{message.more_info_message}")
+      context 'when additional repo storage is available' do
+        it 'returns the correct message' do
+          allow(checker).to receive(:additional_repo_storage_available?).and_return(true)
+
+          expect(message.new_changes_error).to eq('Your push to this repository has been rejected because it would exceed storage limits. Please contact your GitLab administrator for more information.')
+        end
+      end
+
+      context 'when no additional repo storage is available' do
+        it 'returns the correct message' do
+          expect(message.new_changes_error).to eq("Your push to this repository would cause it to exceed the size limit of 10 MB so it has been rejected. #{message.more_info_message}")
+        end
       end
     end
   end