[cassandra, mysql] Add support for max_returned_metrics and dbm options (#751)

* Add database monitoring flag to config

* tagging fix for yaml

* correcting cassandra test

Co-authored-by: Gergo Rozsa <gergo.rozsa@goto.com>

Author: rgergo

manifests/integrations/cassandra.pp

@@ -14,6 +14,8 @@
 #       The password for the datadog user
 #   $tags
 #       Optional array of tags
+#   $max_returned_metrics
+#       Optional number of maximum returned metrics, default 350
 #
 # Sample Usage:
 #
@@ -26,11 +28,12 @@
 #
 #
 class datadog_agent::integrations::cassandra(
-  String $host               = 'localhost',
-  Integer $port              = 7199,
-  Optional[String] $user     = undef,
-  Optional[String] $password = undef,
-  Optional[Hash] $tags       = {},
+  String $host                            = 'localhost',
+  Integer $port                           = 7199,
+  Optional[String] $user                  = undef,
+  Optional[String] $password              = undef,
+  Optional[Hash] $tags                    = {},
+  Optional[Integer] $max_returned_metrics = undef,
 ) inherits datadog_agent::params {
   require ::datadog_agent
 

manifests/integrations/mysql.pp

@@ -27,6 +27,8 @@
 #       schema size metrics
 #   $disable_innodb_metrics
 #       disable innodb metrics, used with older versions of MySQL without innodb engine support.
+#   $dbm
+#       Database Monitoring for Application Performance Monitoring (APM)
 #   $queries
 #       Custom metrics based on MySQL query
 # Sample Usage:
@@ -51,6 +53,7 @@
 #      extra_performance_metrics => 'true',
 #      schema_size_metrics       => 'true',
 #      disable_innodb_metrics    => 'false',
+#      dbm                       => 'false',
 #      queries                   => [
 #        {
 #          query  => 'SELECT TIMESTAMPDIFF(second,MAX(create_time),NOW()) as last_accessed FROM requests',
@@ -77,6 +80,7 @@
   Boolean $extra_performance_metrics       = false,
   Boolean $schema_size_metrics             = false,
   Boolean $disable_innodb_metrics          = false,
+  Optional[Boolean] $dbm                   = undef,
   Optional[Array] $queries                 = [],
   Optional[Array] $instances               = undef,
   Optional[Array] $logs                    = [],
@@ -103,6 +107,7 @@
       'extra_performance_metrics' => $extra_performance_metrics,
       'schema_size_metrics'       => $schema_size_metrics,
       'disable_innodb_metrics'    => $disable_innodb_metrics,
+      'dbm'                       => $dbm,
       'queries'                   => $queries,
     }]
   } elsif !$instances{

spec/classes/datadog_agent_integrations_cassandra_spec.rb

@@ -65,7 +65,7 @@
             }
           end
 
-          it { is_expected.to contain_file(conf_file).with_content(%r{tags:\s+foo: bar\s+baz: ama\s*?[^-]}m) }
+          it { is_expected.to contain_file(conf_file).with_content(%r{tags:\s+-\s+foo:bar\s+-\s+baz:ama\s*?[^-]}m) }
         end
 
         context 'tags not hash' do

templates/agent-conf.d/cassandra.yaml.erb

@@ -11,9 +11,12 @@ instances:
 <% if @tags.length > 0 -%>
     tags:
 <%- @tags.each do |tag_name, tag_value| -%>
-      <%= tag_name %>: <%= tag_value %>
+      - <%= tag_name %>:<%= tag_value %>
 <% end -%>
 <% end -%>
+<% if @max_returned_metrics -%>
+    max_returned_metrics: <%= @max_returned_metrics %>
+<% end -%>
 
 init_config:
 

templates/agent-conf.d/mysql.yaml.erb

@@ -21,6 +21,9 @@ instances:
 <% if instance['sock'] and instance['sock'] != :undef -%>
     sock: <%= instance['sock'] %>
 <% end -%>
+<% if instance['dbm'] and instance['dbm'] != :undef -%>
+    dbm: <%= instance['dbm'] %>
+<% end -%>
 
 <% if instance['tags'] and ! instance['tags'].empty? -%>
     tags: