Add ceilometer profile rspec testing

This change adds rspec testing for the ceilometer profiles. While
writing these tests, the tripleo::profile::base::ceilometer::collector
class needed to have the hiera lookups moved to class parameters to
allow for testing the possible options around the database backend.
These tests add coverage for ipv4 and ipv6 configurations for the
collector profile as well as excluding mongodb on the backend.

Change-Id: I1abae040104e8492a9fe266de74080e1e7701731

1 files changed, 45 insertions, 23 deletions

diff --git a/manifests/profile/base/ceilometer/collector.pp b/manifests/profile/base/ceilometer/collector.pp
index e892478..443873f 100644
--- a/manifests/profile/base/ceilometer/collector.pp
+++ b/manifests/profile/base/ceilometer/collector.pp
@@ -27,9 +27,30 @@
 #   for more details.
 #   Defaults to hiera('step')
 #
+# [*ceilometer_backend*]
+#   (Optional) The ceilometer backend to use.
+#   Defaults to hiera('ceilometer_backend', 'mongodb')
+#
+# [*mongodb_ipv6*]
+#   (Optional) Flag to indicate if mongodb is using ipv6
+#   Defaults to hiera('mongodb::server::ipv6', false)
+#
+# [*mongodb_node_ips*]
+#   (Optional) Array of mongodb node ip address. Required if backend is set
+#   to mongodb.
+#   Defaults to hiera('mongodb_node_ips', [])
+#
+# [*mongodb_replset*]
+#   (Optional) Replica set for mongodb. Required if backend is mongodb
+#   Defaults to hiera(''mongodb::server::replset', '')
+#
 class tripleo::profile::base::ceilometer::collector (
-  $bootstrap_node = hiera('bootstrap_nodeid', undef),
-  $step           = hiera('step'),
+  $bootstrap_node     = hiera('bootstrap_nodeid', undef),
+  $step               = hiera('step'),
+  $ceilometer_backend = hiera('ceilometer_backend', 'mongodb'),
+  $mongodb_ipv6       = hiera('mongodb::server::ipv6', false),
+  $mongodb_node_ips   = hiera('mongodb_node_ips', []),
+  $mongodb_replset    = hiera('mongodb::server::replset', undef)
 ) {
   if $::hostname == downcase($bootstrap_node) {
     $sync_db = true
@@ -37,26 +58,6 @@ class tripleo::profile::base::ceilometer::collector (
     $sync_db = false
   }
 
-  $ceilometer_backend = downcase(hiera('ceilometer_backend', 'mongodb'))
-  # MongoDB
-  if $ceilometer_backend == 'mongodb' {
-    # NOTE(gfidente): We need to pass the list of IPv6 addresses *with* port and
-    # without the brackets as 'members' argument for the 'mongodb_replset'
-    # resource.
-    if str2bool(hiera('mongodb::server::ipv6', false)) {
-      $mongo_node_ips_with_port_prefixed = prefix(hiera('mongodb_node_ips'), '[')
-      $mongo_node_ips_with_port = suffix($mongo_node_ips_with_port_prefixed, ']:27017')
-      $mongo_node_ips_with_port_nobr = suffix(hiera('mongodb_node_ips'), ':27017')
-    } else {
-      $mongo_node_ips_with_port = suffix(hiera('mongodb_node_ips'), ':27017')
-      $mongo_node_ips_with_port_nobr = suffix(hiera('mongodb_node_ips'), ':27017')
-    }
-    $mongo_node_string = join($mongo_node_ips_with_port, ',')
-
-    $mongodb_replset = hiera('mongodb::server::replset')
-    $ceilometer_mongodb_conn_string = "mongodb://${mongo_node_string}/ceilometer?replicaSet=${mongodb_replset}"
-  }
-
   include ::tripleo::profile::base::ceilometer
 
   if $step >= 3 and $sync_db {
@@ -64,7 +65,28 @@ class tripleo::profile::base::ceilometer::collector (
   }
 
   if $step >= 4 or ($step >= 3 and $sync_db) {
-    if $ceilometer_backend == 'mongodb' {
+    if downcase($ceilometer_backend) == 'mongodb' {
+      if empty($mongodb_node_ips) {
+        fail('Provided mongodb node ip addresses are empty')
+      }
+      if !$mongodb_replset {
+        fail('mongodb_replset is required when using mongodb')
+      }
+      # NOTE(gfidente): We need to pass the list of IPv6 addresses *with* port
+      # and without the brackets as 'members' argument for the 'mongodb_replset'
+      # resource.
+      if str2bool($mongodb_ipv6) {
+        $mongo_node_ips_with_port_prefixed = prefix($mongodb_node_ips, '[')
+        $mongo_node_ips_with_port = suffix($mongo_node_ips_with_port_prefixed, ']:27017')
+        $mongo_node_ips_with_port_nobr = suffix($mongodb_node_ips, ':27017')
+      } else {
+        $mongo_node_ips_with_port = suffix($mongodb_node_ips, ':27017')
+        $mongo_node_ips_with_port_nobr = suffix($mongodb_node_ips, ':27017')
+      }
+      $mongo_node_string = join($mongo_node_ips_with_port, ',')
+
+      $ceilometer_mongodb_conn_string = "mongodb://${mongo_node_string}/ceilometer?replicaSet=${mongodb_replset}"
+
       class { '::ceilometer::db' :
         database_connection => $ceilometer_mongodb_conn_string,
       }