allow configuring IMPORT_WORKERS_PERCENT

manifests/init.pp

@@ -193,6 +193,10 @@
 #   If activated, the distributions that are protected by a content guard will not be shown on the
 #   directory listing in the content app.
 #
+# @param import_workers_percent
+#   What percentage of available-workers will pulpcore use for import tasks at a time.
+#   By default, pulpcore will use all available workers.
+#
 # @example Default configuration
 #   include pulpcore
 #
@@ -252,6 +256,7 @@
   Hash[String[1], Pulpcore::Logger] $loggers = {},
   Optional[Boolean] $telemetry = undef,
   Optional[Boolean] $hide_guarded_distributions = undef,
+  Optional[Integer[1]] $import_workers_percent = undef,
 ) {
   $settings_file = "${config_dir}/settings.py"
   $certs_dir = "${config_dir}/certs"

spec/acceptance/settings_spec.rb

@@ -101,3 +101,37 @@ class { 'pulpcore':
     end
   end
 end
+
+describe 'IMPORT_WORKERS_PERCENT setting' do
+  context 'default IMPORT_WORKERS_PERCENT' do
+    it_behaves_like 'an idempotent resource' do
+      let(:manifest) do
+        <<-PUPPET
+        include pulpcore
+        PUPPET
+      end
+    end
+
+    describe file('/etc/pulp/settings.py') do
+      it { is_expected.to be_file }
+      its(:content) { is_expected.to match(/^# IMPORT_WORKERS_PERCENT = 100$/) }
+    end
+  end
+
+  context 'IMPORT_WORKERS_PERCENT set' do
+    it_behaves_like 'an idempotent resource' do
+      let(:manifest) do
+        <<-PUPPET
+        class { 'pulpcore':
+          import_workers_percent => 42,
+        }
+        PUPPET
+      end
+    end
+
+    describe file('/etc/pulp/settings.py') do
+      it { is_expected.to be_file }
+      its(:content) { is_expected.to match(/^IMPORT_WORKERS_PERCENT = 42$/) }
+    end
+  end
+end

templates/settings.py.erb

@@ -76,3 +76,9 @@ CACHE_SETTINGS = {
 <% else -%>
 HIDE_GUARDED_DISTRIBUTIONS = <%= scope.call_function('to_python', [scope['pulpcore::hide_guarded_distributions']]) %>
 <% end -%>
+
+<% if scope['pulpcore::import_workers_percent'].nil? -%>
+# IMPORT_WORKERS_PERCENT = 100
+<% else -%>
+IMPORT_WORKERS_PERCENT = <%= scope['pulpcore::import_workers_percent'] %>
+<% end -%>