Add ALPN support to load balancer listener

This adds property 'alpn_protocols' to load balancer listeners.

Depends-On: https://review.opendev.org/#/c/744520/
Change-Id: I310131afb477d7c33d18963555cc44730f510c1b

openstack/load_balancer/v2/listener.py

@@ -32,13 +32,16 @@ class Listener(resource.Resource, resource.TagMixin):
         'sni_container_refs', 'insert_headers', 'load_balancer_id',
         'timeout_client_data', 'timeout_member_connect',
         'timeout_member_data', 'timeout_tcp_inspect', 'allowed_cidrs',
-        'tls_ciphers', 'tls_versions', is_admin_state_up='admin_state_up',
+        'tls_ciphers', 'tls_versions', 'alpn_protocols',
+        is_admin_state_up='admin_state_up',
         **resource.TagMixin._tag_query_parameters
     )
 
     # Properties
     #: List of IPv4 or IPv6 CIDRs.
     allowed_cidrs = resource.Body('allowed_cidrs', type=list)
+    #: List of ALPN protocols.
+    alpn_protocols = resource.Body('alpn_protocols', type=list)
     #: The maximum number of connections permitted for this load balancer.
     #: Default is infinite.
     connection_limit = resource.Body('connection_limit')

openstack/tests/unit/load_balancer/test_listener.py

@@ -42,7 +42,8 @@ EXAMPLE = {
     'timeout_member_data': 50000,
     'timeout_tcp_inspect': 0,
     'tls_ciphers': 'ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256',
-    'tls_versions': ['TLSv1.1', 'TLSv1.2']
+    'tls_versions': ['TLSv1.1', 'TLSv1.2'],
+    'alpn_protocols': ['h2', 'http/1.1', 'http/1.0']
 }
 
 EXAMPLE_STATS = {
@@ -109,6 +110,8 @@ class TestListener(base.TestCase):
                          test_listener.tls_ciphers)
         self.assertEqual(EXAMPLE['tls_versions'],
                          test_listener.tls_versions)
+        self.assertEqual(EXAMPLE['alpn_protocols'],
+                         test_listener.alpn_protocols)
 
         self.assertDictEqual(
             {'limit': 'limit',
@@ -141,6 +144,7 @@ class TestListener(base.TestCase):
              'timeout_tcp_inspect': 'timeout_tcp_inspect',
              'tls_ciphers': 'tls_ciphers',
              'tls_versions': 'tls_versions',
+             'alpn_protocols': 'alpn_protocols',
              },
             test_listener._query_mapping._mapping)
 

releasenotes/notes/add-load-balancer-listener-alpn-protocols-ded816c78bf2080c.yaml

@@ -0,0 +1,3 @@
+---
+features:
+  - Adds ALPN protocols support for the Octavia (load_balancer) listeners.