updates to collectd support

Based on Steve Hardy's comments in
https://review.openstack.org/#/c/413748/, we need to move handling of
the list of plugins out of the heat templates and into puppet.  This
module now uses the service_names variable to look up information on
per-service collectd plugins.

Change-Id: Ie5fba01e1f91ffdc39eb0eb1be9b1464c797b04f

2 files changed, 17 insertions, 0 deletions

diff --git a/manifests/profile/base/metrics/collectd/collectd_plugin.pp b/manifests/profile/base/metrics/collectd/collectd_plugin.pp
new file mode 100644
index 0000000..5ab940b
--- /dev/null
+++ b/manifests/profile/base/metrics/collectd/collectd_plugin.pp
@@ -0,0 +1,6 @@
+# We use this to transform a list of unqualified plugin names
+# (like ['disk', 'ntpd']) into the correct collectd plugin classes.
+define tripleo::profile::base::metrics::collectd::collectd_plugin (
+) {
+  include "collectd::plugin::${title}"
+}
diff --git a/manifests/profile/base/metrics/collectd/collectd_service.pp b/manifests/profile/base/metrics/collectd/collectd_service.pp
new file mode 100644
index 0000000..c1b3a60
--- /dev/null
+++ b/manifests/profile/base/metrics/collectd/collectd_service.pp
@@ -0,0 +1,11 @@
+# This is used to look up a list of service-specific collectd plugins
+# in the hiera data provided by THT.
+define tripleo::profile::base::metrics::collectd::collectd_service (
+) {
+  $plugins = hiera("tripleo.collectd.plugins.${title}", [])
+
+  if $plugins {
+    ::tripleo::profile::base::metrics::collectd::collectd_plugin {
+      $plugins: }
+  }
+}