Adding wrapper script for haproxy in OVN metadata agent

Change-Id: Ieb5618ec96539bb07d9d01b5c6d27da962f65156
Related-Bug: #1749209
Signed-off-by: Daniel Alvarez <dalvarez@redhat.com>

manifests/profile/base/neutron/ovn_metadata_agent_wrappers.pp

@@ -0,0 +1,60 @@
+# Copyright 2018 Red Hat, Inc.
+#
+# 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.
+#
+# == Class: tripleo::profile::base::neutron::ovn_metadata_agent_wrappers
+#
+# Generates wrapper scripts for running OVN metadata agent subprocesess in containers.
+#
+# === Parameters
+#
+# [*enable_haproxy_wrapper*]
+#  (Optional) If true, generates a wrapper for running haproxy in
+#  a docker container.
+#  Defaults to false
+#
+# [*haproxy_process_wrapper*]
+#   (Optional) If set, generates a haproxy wrapper in the specified file.
+#   Defaults to undef
+#
+# [*haproxy_image*]
+#   (Optional) Docker image name for haproxy. Required if
+#   haproxy_process_wrapper is set.
+#   Defaults to undef
+#
+# [*bind_sockets*]
+#   (Optional) Domain sockets that the wrappers should use for accessing
+#   the docker daemon.
+#   Defaults to hiera('docker_additional_sockets', ['/var/lib/openstack/docker.sock'])
+#
+class tripleo::profile::base::neutron::ovn_metadata_agent_wrappers (
+  $enable_haproxy_wrapper    = false,
+  $haproxy_process_wrapper   = undef,
+  $haproxy_image             = undef,
+  $bind_sockets              = hiera('docker_additional_sockets', ['/var/lib/openstack/docker.sock']),
+) {
+  unless $bind_sockets {
+    fail('The wrappers require a domain socket for accessing the docker daemon')
+  }
+  $bind_socket = join(['unix://', $bind_sockets[0]], '')
+  if $enable_haproxy_wrapper {
+    unless $haproxy_image and $haproxy_process_wrapper{
+      fail('The docker image for haproxy and wrapper filename must be provided when generating haproxy wrappers')
+    }
+    tripleo::profile::base::neutron::wrappers::haproxy{'ovn_metadata_haproxy_process_wrapper':
+      haproxy_process_wrapper => $haproxy_process_wrapper,
+      haproxy_image           => $haproxy_image,
+      bind_socket             => $bind_socket
+    }
+  }
+}