haproxy_proxies.template

{# #    Copyright (c) 2015 Rackspace
#
#    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.
#
#}
{% extends 'haproxy_base.template' %}

{% macro peers_macro(constants,listener) %}
{% if listener.topology == constants.TOPOLOGY_ACTIVE_STANDBY %}
peers {{ "%s_peers"|format(listener.id.replace("-", ""))|trim() }}
{% for amp in listener.amphorae %}
    {# HAProxy has peer name limitations, thus the hash filter #}
    peer {{ amp.id|hash_amp_id|replace('=', '') }} {{ amp.vrrp_ip }}:{{ listener.peer_port }}
{% endfor %}
{% endif %}
{% endmacro %}

{% macro bind_macro(constants, listener, lb_vip_address) %}
{% if listener.default_tls_path %}
{% set def_crt_opt = "ssl crt %s"|format(listener.default_tls_path)|trim() %}
{% else %}
{% set def_crt_opt = "" %}
{% endif %}
{% if listener.crt_dir %}
{% set crt_dir_opt = "crt %s"|format(listener.crt_dir)|trim() %}
{% else %}
{% set crt_dir_opt = "" %}
{% endif %}
bind {{ lb_vip_address }}:{{ listener.protocol_port }} {{ "%s %s"|format(def_crt_opt, crt_dir_opt)|trim() }}
{% endmacro %}

{% macro use_backend_macro(listener) %}
{% if listener.default_pool %}
default_backend {{ listener.default_pool.id }}
{% endif %}
{% endmacro %}

{% macro frontend_macro(constants, listener, lb_vip_address) %}
frontend {{ listener.id }}
    option tcplog
{% if listener.connection_limit is defined %}
    maxconn {{ listener.connection_limit }}
{% endif %}
{% if listener.protocol_mode == constants.PROTOCOL_HTTP.lower() %}
    option forwardfor
{% endif %}
    {{ bind_macro(constants, listener, lb_vip_address)|trim() }}
    mode {{ listener.protocol_mode }}
{% if listener.default_pool %}
    default_backend {{ listener.default_pool.id }}
{% endif %}
{% endmacro %}

{% macro backend_macro(constants, listener, pool) %}
backend {{ pool.id }}
    mode {{ pool.protocol }}
    balance {{ pool.lb_algorithm }}
{% if listener.protocol == constants.PROTOCOL_TERMINATED_HTTPS %}
    redirect scheme https if !{ ssl_fc }
{% endif %}
{% if pool.session_persistence %}
{% if pool.session_persistence.type == constants.SESSION_PERSISTENCE_SOURCE_IP %}
{% if listener.topology == constants.TOPOLOGY_ACTIVE_STANDBY %}
    stick-table type ip size {{ pool.stick_size }} peers {{ "%s_peers"|format(listener.id.replace("-", ""))|trim() }}
{% else %}
    stick-table type ip size {{ pool.stick_size }}
{% endif %}
    stick on src
{% elif pool.session_persistence.type == constants.SESSION_PERSISTENCE_APP_COOKIE %}
{% if listener.topology == constants.TOPOLOGY_ACTIVE_STANDBY %}
    stick-table type string len 64 size {{ pool.stick_size }} peers {{ "%s_peers"|format(listener.id.replace("-", ""))|trim() }}
{% else %}
    stick-table type string len 64 size {{ pool.stick_size }}
{% endif %}
    stick store-response res.cook({{ pool.session_persistence.cookie_name }})
    stick match req.cook({{ pool.session_persistence.cookie_name }})
{% elif pool.session_persistence.type == constants.SESSION_PERSISTENCE_HTTP_COOKIE %}
    cookie SRV insert indirect nocache
{% endif %}
{% endif %}
{% if pool.health_monitor %}
    timeout check {{ pool.health_monitor.timeout }}
{% if pool.health_monitor.type == constants.HEALTH_MONITOR_HTTP or pool.health_monitor.type == constants.HEALTH_MONITOR_HTTPS %}
    option httpchk {{ pool.health_monitor.http_method }} {{ pool.health_monitor.url_path }}
    http-check expect rstatus {{ pool.health_monitor.expected_codes }}
{% endif %}
{% if pool.health_monitor.type == constants.HEALTH_MONITOR_HTTPS %}
    option ssl-hello-chk
{% endif %}
{% endif %}
{% if listener.protocol_mode == constants.PROTOCOL_HTTP.lower() %}
    option forwardfor
{% endif %}
{% for member in pool.members %}
{% if pool.health_monitor %}
{% set hm_opt = " check inter %ds fall %d rise %d"|format(pool.health_monitor.delay, pool.health_monitor.fall_threshold, pool.health_monitor.rise_threshold) %}
{% else %}
{% set hm_opt = "" %}
{% endif %}
{%if pool.session_persistence.type == constants.SESSION_PERSISTENCE_HTTP_COOKIE %}
{% set persistence_opt = " cookie %s"|format(member.id) %}
{% else %}
{% set persistence_opt = "" %}
{% endif %}
    {{ "server %s %s:%d weight %s%s%s"|e|format(member.id, member.address, member.protocol_port, member.weight, hm_opt, persistence_opt)|trim() }}
{% endfor %}
{% endmacro %}