Fix #35 add support for DB options

REFERENCE.md

@@ -77,6 +77,7 @@ The following parameters are available in the `icingadb` class:
 * [`db_tls_key_file`](#-icingadb--db_tls_key_file)
 * [`db_tls_cacert`](#-icingadb--db_tls_cacert)
 * [`db_tls_cacert_file`](#-icingadb--db_tls_cacert_file)
+* [`db_options`](#-icingadb--db_options)
 * [`logging_level`](#-icingadb--logging_level)
 * [`logging_output`](#-icingadb--logging_output)
 * [`logging_interval`](#-icingadb--logging_interval)
@@ -325,6 +326,23 @@ Location of the CA root certificate. Only valid if `db_use_tls` is turned on.
 
 Default value: `undef`
 
+##### <a name="-icingadb--db_options"></a>`db_options`
+
+Data type:
+
+```puppet
+Optional[Hash[Enum['max_connections',
+  'max_connections_per_table',
+  'max_placeholders_per_statement',
+  'max_rows_per_transaction',
+  'wsrep_sync_wait'],Integer[1]]]
+```
+
+List of low-level database options that can be set to influence some
+Icinga DB internal default behaviours.
+
+Default value: `undef`
+
 ##### <a name="-icingadb--logging_level"></a>`logging_level`
 
 Data type: `Enum['fatal','error','warn','info','debug']`

manifests/config.pp

@@ -45,6 +45,7 @@
         db_tls_key             => $db_tls_files['key_file'],
         db_tls_cacert          => $db_tls_files['cacert_file'],
         db_tls_insecure        => $icingadb::db_tls_insecure,
+        db_options             => $icingadb::db_options,
         redis_tls              => $icingadb::redis_use_tls,
         redis_tls_cert         => $redis_tls_files['cert_file'],
         redis_tls_key          => $redis_tls_files['key_file'],

manifests/init.pp

@@ -101,6 +101,10 @@
 # @param db_tls_cacert_file
 #   Location of the CA root certificate. Only valid if `db_use_tls` is turned on.
 #
+# @param db_options
+#   List of low-level database options that can be set to influence some
+#   Icinga DB internal default behaviours.
+#
 # @param logging_level
 #   Specifies the default logging level. Can be set to fatal, error, warn, info or debug.
 #
@@ -145,6 +149,11 @@
   Optional[Stdlib::Absolutepath]                 $db_tls_cert_file       = undef,
   Optional[Stdlib::Absolutepath]                 $db_tls_key_file        = undef,
   Optional[Stdlib::Absolutepath]                 $db_tls_cacert_file     = undef,
+  Optional[Hash[Enum['max_connections',
+  'max_connections_per_table',
+  'max_placeholders_per_statement',
+  'max_rows_per_transaction',
+  'wsrep_sync_wait'],Integer[1]]]                $db_options             = undef,
   Stdlib::Host                                   $redis_host             = 'localhost',
   Stdlib::Port                                   $redis_port             = 6380,
   Optional[Icinga::Secret]                       $redis_password         = undef,

templates/config.yml.epp

@@ -9,6 +9,7 @@
       Optional[String]                             $db_tls_key             = undef,
       Optional[String]                             $db_tls_cacert          = undef,
       Optional[Boolean]                            $db_tls_insecure        = undef,
+      Optional[Hash]                               $db_options             = undef,
       Stdlib::Host                                 $redis_host,
       Optional[Stdlib::Port]                       $redis_port             = undef,
       Optional[Variant[String, Sensitive[String]]] $redis_password         = undef,
@@ -51,7 +52,13 @@ database:
   insecure: <%= $db_tls_insecure %>
 <% } -%>
 <% } -%>
-
+<% if $db_options { -%>
+  options:
+<% $db_options.each |String $opt, Integer $val| { -%>
+    <%= $opt %>: <%= $val %>
+<% } -%>
+<% } -%>
+
 redis:
   host: <%= $redis_host %>
 <% if $redis_port { -%>