Add support for read_only middleware

Change-Id: I82726ab76587a134f9267521821b48e8a1a05936

manifests/proxy/read_only.pp

@@ -0,0 +1,27 @@
+# == Class: swift::proxy::read_only
+#
+# Configure read_only middleware
+#
+# === Parameters
+#
+# [*read_only*]
+#   (optional) Turn on global read only.
+#   Defauls to $facts['os_service_default']
+#
+# [*allow_deletes*]
+#   (optional) Allow deletes.
+#   Defauls to $facts['os_service_default']
+#
+class swift::proxy::read_only(
+  $read_only     = $facts['os_service_default'],
+  $allow_deletes = $facts['os_service_default']
+) {
+
+  include swift::deps
+
+  swift_proxy_config {
+    'filter:read_only/use':           value => 'egg:swift#read_only';
+    'filter:read_only/read_only':     value => $read_only;
+    'filter:read_only/allow_deletes': value => $allow_deletes;
+  }
+}

releasenotes/notes/read_only-f0e5b52bfcbbe99d.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    The new ``swift::proxy::read_only`` class has been added.

spec/classes/swift_proxy_read_only_spec.rb

@@ -0,0 +1,36 @@
+require 'spec_helper'
+
+describe 'swift::proxy::read_only' do
+  shared_examples 'swift::proxy::read_only' do
+    context 'when using default parameters' do
+      it { is_expected.to contain_swift_proxy_config('filter:read_only/use').with_value('egg:swift#read_only') }
+      it { is_expected.to contain_swift_proxy_config('filter:read_only/read_only').with_value('<SERVICE DEFAULT>') }
+      it { is_expected.to contain_swift_proxy_config('filter:read_only/allow_deletes').with_value('<SERVICE DEFAULT>') }
+    end
+
+    context 'when overriding default parameters' do
+      let :params do
+        {
+          :read_only     => true,
+          :allow_deletes => false,
+        }
+      end
+
+      it { is_expected.to contain_swift_proxy_config('filter:read_only/use').with_value('egg:swift#read_only') }
+      it { is_expected.to contain_swift_proxy_config('filter:read_only/read_only').with_value(true) }
+      it { is_expected.to contain_swift_proxy_config('filter:read_only/allow_deletes').with_value(false) }
+    end
+  end
+
+  on_supported_os({
+    :supported_os => OSDefaults.get_supported_os
+  }).each do |os,facts|
+    context "on #{os}" do
+      let (:facts) do
+        facts.merge(OSDefaults.get_facts())
+      end
+
+      it_behaves_like 'swift::proxy::read_only'
+    end
+  end
+end