Allow changing the checkConnectionWhileIdle flag for api

Change-Id: I5c2f17577a13b74049aa7fb58b7d08306a9ffa12

manifests/api.pp

@@ -10,6 +10,9 @@
 # [*blobmirror*]
 #   url of server to install debians from
 #
+# [*check_conn_while_idle*]
+#   flag for whether db connection should stay alive while idle
+#
 # [*database_type*]
 #   type of database backend, influxdb or vertica
 #
@@ -55,6 +58,7 @@
 class monasca::api (
   $api_user              = 'monasca_api',
   $blobmirror            = undef,
+  $check_conn_while_idle = true,
   $database_type         = 'influxdb',
   $database_host         = 'localhost',
   $db_admin_password     = undef,

templates/api-config.yml.erb

@@ -24,7 +24,7 @@ mysql:
   validationQuery: "/* MyService Health Check */ SELECT 1"
   minSize: 8
   maxSize: 32
-  checkConnectionWhileIdle: false
+  checkConnectionWhileIdle: <%= check_conn_while_idle %>
   checkConnectionOnBorrow: true
 
 databaseConfiguration:
@@ -49,7 +49,7 @@ vertica:
   validationQuery: "/* MyService Health Check */ SELECT 1"
   minSize: 4
   maxSize: 32
-  checkConnectionWhileIdle: false
+  checkConnectionWhileIdle: <%= check_conn_while_idle %>
 
 middleware:
   enabled: true