diff --git a/manifests/config.pp b/manifests/config.pp
index 363e634..16f2d3a 100644
--- a/manifests/config.pp
+++ b/manifests/config.pp
@@ -31,8 +31,9 @@ class monasca::config (
   $monasca_config = {},
   $monasca_ini  = {},
 ) {
-  validate_hash($monasca_config)
-  validate_hash($monasca_ini)
+
+  validate_legacy(Hash, 'validate_hash', $monasca_config)
+  validate_legacy(Hash, 'validate_hash', $monasca_ini)
 
   create_resources('monasca_config', $monasca_config)
   create_resources('monasca_ini', $monasca_ini)
diff --git a/manifests/params.pp b/manifests/params.pp
index e64aff6..cba2b94 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -93,15 +93,17 @@ class monasca::params(
       'database_type'      => 'influxdb',
     }
 ) {
+
   include ::openstacklib::defaults
-  validate_string($admin_password)
-  validate_string($admin_project_name)
-  validate_string($user_password)
-  validate_string($agent_password)
-  validate_string($sql_password)
-  validate_string($sql_host)
-  validate_string($api_db_password)
-  validate_string($pers_db_password)
+
+  validate_legacy(String, 'validate_string', $admin_password)
+  validate_legacy(String, 'validate_string', $admin_project_name)
+  validate_legacy(String, 'validate_string', $user_password)
+  validate_legacy(String, 'validate_string', $agent_password)
+  validate_legacy(String, 'validate_string', $sql_password)
+  validate_legacy(String, 'validate_string', $sql_host)
+  validate_legacy(String, 'validate_string', $api_db_password)
+  validate_legacy(String, 'validate_string', $pers_db_password)
 
   if $::osfamily == 'Debian' {
     $agent_package = 'monasca-agent'
diff --git a/manifests/virtualenv/agent_instance.pp b/manifests/virtualenv/agent_instance.pp
index 92f8e95..c048c39 100644
--- a/manifests/virtualenv/agent_instance.pp
+++ b/manifests/virtualenv/agent_instance.pp
@@ -36,13 +36,16 @@ define monasca::virtualenv::agent_instance(
   $venv_active       = false,
   $venv_extra_args   = undef,
 ) {
-  validate_string($ensure)
+
+  validate_legacy(String, 'validate_string', $ensure)
+
   $valid_values = [
     '^present$',
     '^absent$',
   ]
-  validate_re($ensure, $valid_values,
-    "Unknown value '${ensure}' for ensure, must be present or absent")
+
+  validate_legacy(Enum['present', 'absent'], 'validate_re', $ensure,
+    [$valid_values, "Unknown value '${ensure}' for ensure, must be present or absent"])
 
   File[$basedir] ->  anchor { 'monasca::virtualenv::instance': }
   Package<| name == 'python-virtualenv' |> -> Anchor['monasca::virtualenv::instance']
diff --git a/manifests/virtualenv/instance.pp b/manifests/virtualenv/instance.pp
index aedaf09..767c774 100644
--- a/manifests/virtualenv/instance.pp
+++ b/manifests/virtualenv/instance.pp
@@ -58,20 +58,23 @@ define monasca::virtualenv::instance(
   $venv_active       = false,
   $venv_extra_args   = undef,
 ) {
-  validate_string($ensure)
+
+  validate_legacy(String, 'validate_string', $ensure)
+
   $valid_values = [
     '^present$',
     '^absent$',
   ]
-  validate_re($ensure, $valid_values,
-    "Unknown value '${ensure}' for ensure, must be present or absent")
+
+  validate_legacy(Enum['present', 'absent'], 'validate_re', $ensure,
+    [$valid_values, "Unknown value '${ensure}' for ensure, must be present or absent"])
 
   $req_dest = "${basedir}/${venv_prefix}-requirements.txt"
   $venv_dir = "${basedir}/${venv_prefix}-venv"
   $venv_name = "${venv_prefix}-${name}"
 
   if $ensure == 'present' {
-    validate_string($venv_requirements)
+    validate_legacy(String, 'validate_string', $venv_requirements)
 
     file { $req_dest:
       ensure => 'file',