Add SQLAlchemy-collectd support

The SQLAlchemy-collectd plugin is now shipped in podman
containers under Kolla, this allows heat templates
to pull the plugin into the collectd configuration when
the collectd templates are being used.

A corresponding set of template changes in tripleo-heat-templates
will enable this plugin.

Change-Id: If598da717653a383a2d3b3373c56517f8bca832f

manifests/profile/base/metrics/collectd.pp

@@ -133,6 +133,18 @@
 #   (Optional) String. Minimum number of values Gnocchi should batch.
 #   Defaults to 10
 #
+# [*enable_sqlalchemy_collectd*]
+#   (Optional) boolean.  enable SQLAlchemy-collectd plugin
+#   defaults to false
+#
+# [*sqlalchemy_collectd_bind_host*]
+#   (Optional) String. Hostname to listen on.  Defaults to 0.0.0.0
+#
+# [*sqlalchemy_collectd_log_messages*]
+#   (Optional) String. Log level for the plugin, set to "debug" to show
+#   messages received.
+#   Defaults to 'info'
+#
 # [*service_names*]
 #   (Optional) List of strings.  A list of active services in this tripleo
 #   deployment. This is used to look up service-specific plugins that
@@ -222,6 +234,9 @@ class tripleo::profile::base::metrics::collectd (
   $gnocchi_keystone_endpoint = undef,
   $gnocchi_resource_type = 'collectd',
   $gnocchi_batch_size = 10,
+  $enable_sqlalchemy_collectd = false,
+  $sqlalchemy_collectd_bind_host = undef,
+  $sqlalchemy_collectd_log_messages = undef,
   $amqp_transport_name = 'metrics',
   $amqp_host = undef,
   $amqp_port = undef,
@@ -240,7 +255,10 @@ class tripleo::profile::base::metrics::collectd (
       manage_repo => $collectd_manage_repo
     }
 
-    include ::collectd::plugin::python
+    class { '::collectd::plugin::python':
+      logtraces   => true,
+    }
+
     $python_packages = concat(['collectd-python'], $python_read_plugins)
     package { $python_packages:
       ensure => 'present'
@@ -282,6 +300,13 @@ class tripleo::profile::base::metrics::collectd (
       default => $collectd_securitylevel
     }
 
+    if $enable_sqlalchemy_collectd {
+      ::tripleo::profile::base::metrics::collectd::sqlalchemy_collectd { 'sqlalchemy_collectd':
+          bind_host    => $sqlalchemy_collectd_bind_host,
+          log_messages => $sqlalchemy_collectd_log_messages,
+      }
+    }
+
     if ! empty($collectd_server) {
       ::collectd::plugin::network::server { $collectd_server:
         username      => $_collectd_username,

manifests/profile/base/metrics/collectd/sqlalchemy_collectd.pp

@@ -0,0 +1,53 @@
+# Copyright 2019 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.
+#
+# == Define: tripleo::profile::base::metrics::collectd::sqlalchemy_collectd
+#
+# This is used to create configuration file for sqlalchemy-collectd plugin
+#
+# === Parameters
+#
+# [*bind_host*]
+#   (Optional) String. Hostname to listen on.  Defaults to 0.0.0.0
+#
+# [*bind_port*]
+#   (Optional) Integer.  Port to listen on.  defaults to 25827.
+#
+# [*log_messages*]
+#   (Optional) String. Log level for the plugin, set to "debug" to show
+#   messages received.
+#   Defaults to 'info'
+#
+#
+define tripleo::profile::base::metrics::collectd::sqlalchemy_collectd (
+  $bind_host      = '0.0.0.0',
+  $bind_port      = 25827,
+  $log_messages   = 'info',
+
+) {
+  include ::collectd
+
+  package { 'python-collectd-sqlalchemy':
+    ensure => 'present',
+  }
+
+  ::collectd::plugin::python::module { 'collectd_sqlalchemy':
+      config        => [{
+          'listen'   => [$bind_host, $bind_port],
+          'loglevel' => $log_messages
+      }],
+      module_import => 'sqlalchemy_collectd.server.plugin',
+  }
+
+}