Let haproxy to be ODL websocket's frontend

This PS does:
1) Let haproxy to be ODL websocket's frontend and listen on port 8185.
2) Add 10-rest-connector.xml config file template for ODL container.
3) ODL websocket backend listen only on api interface, port is also
8185.

Closes-Bug: #1745323

Change-Id: Id330d610c7cd8a239b0f77c8f5f47422d48b9977
Signed-off-by: Zhijiang Hu <hu.zhijiang@zte.com.cn>

ansible/group_vars/all.yml

@@ -315,6 +315,7 @@ opendaylight_tomcat_redirect_port: "8663"
 opendaylight_karaf_ssh_port: "8101"
 opendaylight_openflow_port: "6653"
 opendaylight_ovsdb_port: "6641"
+opendaylight_websocket_port: "8185"
 
 vitrage_api_port: "8999"
 

ansible/roles/haproxy/templates/haproxy.cfg.j2

@@ -929,4 +929,11 @@ listen opendaylight_api_backup
   server {{ hostvars[host]['ansible_hostname'] }} {{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ opendaylight_restconf_port_backup }} check fall 5 inter 2000 rise 2
 {% endfor %}
 
+listen opendaylight_websocket
+  bind {{ kolla_internal_vip_address }}:{{ opendaylight_websocket_port }}
+  balance source
+{% for host in groups['opendaylight'] %}
+  server {{ hostvars[host]['ansible_hostname'] }} {{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ opendaylight_websocket_port }} check fall 5 inter 2000 rise 2
+{% endfor %}
+
 {% endif %}

ansible/roles/opendaylight/handlers/main.yml

@@ -28,4 +28,5 @@
       or opendaylight_config_akka | changed
       or opendaylight_config_modules | changed
       or opendaylight_config_module_shards | changed
+      or opendaylight_config_10_rest_connector | changed
       or check_opendaylight_containers | changed

ansible/roles/opendaylight/tasks/config.yml

@@ -160,6 +160,18 @@
   notify:
     - Restart opendaylight container
 
+- name: Copying over 10-rest-connector.xml
+  template:
+    src: "{{ item }}"
+    dest: "{{ node_config_directory }}/opendaylight/10-rest-connector.xml"
+  with_first_found:
+    - "{{ node_custom_config }}/opendaylight/{{ inventory_hostname }}/10-rest-connector.xml"
+    - "{{ node_custom_config }}/opendaylight/10-rest-connector.xml"
+    - "10-rest-connector.xml.j2"
+  register: opendaylight_config_10_rest_connector
+  notify:
+    - Restart opendaylight container
+
 - name: Check opendaylight containers
   kolla_docker:
     action: "compare_container"

ansible/roles/opendaylight/templates/10-rest-connector.xml.j2

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
+
+This program and the accompanying materials are made available under the
+terms of the Eclipse Public License v1.0 which accompanies this distribution,
+and is available at http://www.eclipse.org/legal/epl-v10.html
+-->
+<snapshot>
+  <configuration>
+    <data xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
+      <modules xmlns="urn:opendaylight:params:xml:ns:yang:controller:config">
+        <!-- default OF-switch-connection-provider (port 6633) -->
+        <module>
+          <type xmlns:rest="urn:opendaylight:params:xml:ns:yang:controller:md:sal:rest:connector">rest:rest-connector-impl</type>
+          <name>rest-connector-default-impl</name>
+          <websocket-address>{{ hostvars[inventory_hostname]['ansible_' + hostvars[inventory_hostname]['api_interface']]['ipv4']['address'] }}</websocket-address>
+          <websocket-port>{{ opendaylight_websocket_port }}</websocket-port>
+          <dom-broker>
+            <type xmlns:dom="urn:opendaylight:params:xml:ns:yang:controller:md:sal:dom">dom:dom-broker-osgi-registry</type>
+            <name>dom-broker</name>
+          </dom-broker>
+        </module>
+      </modules>
+
+      <services xmlns="urn:opendaylight:params:xml:ns:yang:controller:config">
+        <service>
+          <type xmlns:rest="urn:opendaylight:params:xml:ns:yang:controller:md:sal:rest:connector">rest:rest-connector</type>
+          <instance>
+            <name>rest-connector-default</name>
+            <provider>
+              /modules/module[type='rest-connector-impl'][name='rest-connector-default-impl']
+            </provider>
+          </instance>
+        </service>
+      </services>
+    </data>
+  </configuration>
+  <required-capabilities>
+      <capability>urn:opendaylight:params:xml:ns:yang:controller:md:sal:rest:connector?module=opendaylight-rest-connector&amp;revision=2014-07-24</capability>
+  </required-capabilities>
+</snapshot>

ansible/roles/opendaylight/templates/opendaylight.json.j2

@@ -78,6 +78,12 @@
             "dest": "/opt/opendaylight/configuration/initial/module-shards.conf",
             "owner": "odl",
             "perm": "0600"
+        },
+        {
+            "source": "{{ container_config_directory }}/10-rest-connector.xml",
+            "dest": "/opt/opendaylight/etc/opendaylight/karaf/10-rest-connector.xml",
+            "owner": "odl",
+            "perm": "0600"
         }
     ],
     "permissions": [