Add symlink middleware support

Change-Id: I252584bdcef64e9d0056b132cb57bfd6f87e187b

manifests/proxy/symlink.pp

@@ -0,0 +1,42 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# Configure swift symlink middleware.
+#
+# == Example
+#
+# include ::swift::proxy::symlink
+#
+# == Parameters
+#
+# [*symloop_max*]
+# Symlinks can point to other symlinks provided the number of symlinks in a
+# chain does not exceed the symloop_max value. If the number of chained
+# symlinks exceeds the limit symloop_max a 409 (HTTPConflict) error
+# response will be produced.
+# Default to $::os_service_default
+#
+# == Authors
+#
+# shi.yan@ardc.edu.au
+#
+class swift::proxy::symlink(
+  $symloop_max = $::os_service_default,
+) {
+
+  include swift::deps
+
+  swift_proxy_config {
+    'filter:symlink/use':         value => 'egg:swift#symlink';
+    'filter:symlink/symloop_max': value => $symloop_max;
+  }
+}

releasenotes/notes/add-swift-proxy-symlink-4864e7c1755567d4.yaml

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+---
+features:
+  - |
+    Add swift::proxy::symlink class to configure symlink middleware for swift proxy.

spec/classes/swift_proxy_symlink_spec.rb

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+require 'spec_helper'
+
+describe 'swift::proxy::symlink' do
+  shared_examples 'swift::proxy::symlink' do
+    context 'when using default parameters' do
+      it { is_expected.to contain_swift_proxy_config('filter:symlink/use').with_value('egg:swift#symlink') }
+      it { is_expected.to contain_swift_proxy_config('filter:symlink/symloop_max').with_value('<SERVICE DEFAULT>') }
+    end
+
+    context 'when overriding default parameters' do
+      let :params do
+        {
+          :symloop_max => '3'
+        }
+      end
+
+      it { is_expected.to contain_swift_proxy_config('filter:symlink/use').with_value('egg:swift#symlink') }
+      it { is_expected.to contain_swift_proxy_config('filter:symlink/symloop_max').with_value('3') }
+    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::symlink'
+    end
+  end
+end