Add support of OSSysLogHandler logging handler

Change-Id: I5932c575c14e21b81aee776977b448fba5e9669f
diff --git a/README.rst b/README.rst
index fe6ac21..c6204e1 100644
--- a/README.rst
+++ b/README.rst
@@ -62,8 +62,9 @@
 That is possible to enable per-binary logging.conf with new variables:
   * openstack_log_appender - set it to true to enable log_config_append for all OpenStack services;
   * openstack_fluentd_handler_enabled - set to true to enable FluentHandler for all Openstack services.
+  * openstack_ossyslog_handler_enabled - set to true to enable OSSysLogHandler for all Openstack services.
 
-Only WatchedFileHandler and FluentHandler are available.
+Only WatchedFileHandler, OSSysLogHandler and FluentHandler are available.
 
 Also it is possible to configure this with pillar:
 
@@ -78,6 +79,8 @@
             enabled: true
           fluentd:
             enabled: true
+          ossyslog:
+            enabled: true
 
 Development and testing
 =======================
diff --git a/aodh/files/logging.conf b/aodh/files/logging.conf
index 703530c..4c64288 100644
--- a/aodh/files/logging.conf
+++ b/aodh/files/logging.conf
@@ -12,7 +12,7 @@
 keys = {{ log_handlers | join(", ") }}
 
 [formatters]
-keys = context, default, fluentd
+keys = context, default{% if values.logging.log_handlers.get('fluentd', {}).get('enabled', False) %}, fluentd{% endif %}
 
 [logger_root]
 level = WARNING
@@ -38,6 +38,14 @@
 formatter = context
 {%- endif %}
 
+{% if values.logging.log_handlers.get('ossyslog', {}).get('enabled', False) -%}
+{%- set ossyslog_args = values.logging.log_handlers.ossyslog.get('args', {}) -%}
+[handler_ossyslog]
+class = oslo_log.handlers.OSSysLogHandler
+args = ( handlers.SysLogHandler.{{ ossyslog_args.get('facility', 'LOG_USER') }}, )
+formatter = context
+{%- endif %}
+
 [formatter_context]
 class = oslo_log.formatters.ContextFormatter
 
diff --git a/metadata/service/server/cluster.yml b/metadata/service/server/cluster.yml
index 1bc8da2..2d222d4 100644
--- a/metadata/service/server/cluster.yml
+++ b/metadata/service/server/cluster.yml
@@ -7,6 +7,7 @@
     keystone_aodh_endpoint_type: internalURL
     openstack_log_appender: false
     openstack_fluentd_handler_enabled: false
+    openstack_ossyslog_handler_enabled: false
   aodh:
     server:
       enabled: true
@@ -40,6 +41,8 @@
             enabled: true
           fluentd:
             enabled: ${_param:openstack_fluentd_handler_enabled}
+          ossyslog:
+            enabled: ${_param:openstack_ossyslog_handler_enabled}
       message_queue:
         engine: rabbitmq
         host: ${_param:cluster_vip_address}
diff --git a/metadata/service/server/single.yml b/metadata/service/server/single.yml
index 0325c48..68fc4c1 100644
--- a/metadata/service/server/single.yml
+++ b/metadata/service/server/single.yml
@@ -7,6 +7,7 @@
     keystone_aodh_endpoint_type: internalURL
     openstack_log_appender: false
     openstack_fluentd_handler_enabled: false
+    openstack_ossyslog_handler_enabled: false
   aodh:
     server:
       enabled: true
@@ -37,6 +38,8 @@
             enabled: true
           fluentd:
             enabled: ${_param:openstack_fluentd_handler_enabled}
+          ossyslog:
+            enabled: ${_param:openstack_ossyslog_handler_enabled}
       message_queue:
         engine: rabbit
         host: ${_param:single_address}
@@ -47,4 +50,4 @@
         # Workaround for https://bugs.launchpad.net/ceilometer/+bug/1337715
         rpc_thread_pool_size: 5
       notifications:
-        store_events: true
\ No newline at end of file
+        store_events: true