Convert postgresql_munin to an LWRP

[chef.git] / cookbooks / postgresql / providers / munin.rb

diff --git a/cookbooks/postgresql/providers/munin.rb b/cookbooks/postgresql/providers/munin.rb
new file mode 100644 (file)
index 0000000..986c11f
--- /dev/null
+++ b/cookbooks/postgresql/providers/munin.rb
@@ -0,0 +1,58 @@
+#
+# Cookbook Name:: postgresql
+# Provider:: postgresql_munin
+#
+# Copyright 2015, OpenStreetMap Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+def whyrun_supported?
+  true
+end
+
+use_inline_resources
+
+action :create do
+  cluster = node[:postgresql][:clusters] && node[:postgresql][:clusters][new_resource.cluster]
+  database = new_resource.database
+
+  if cluster
+    %w(cache connections locks querylength scans size transactions tuples).each do |plugin|
+      munin_plugin "postgres_#{plugin}_#{database}:#{suffix}" do
+        target "postgres_#{plugin}_"
+        conf "munin.erb"
+        conf_cookbook "postgresql"
+        conf_variables :port => cluster[:port]
+        restart_munin false
+      end
+    end
+  else
+    Chef::Log.info "Postgres cluster #{new_resource.cluster} not found"
+  end
+end
+
+action :delete do
+  database = new_resource.database
+
+  %w(cache connections locks querylength scans size transactions tuples).each do |plugin|
+    munin_plugin "postgres_#{plugin}_#{database}:#{suffix}" do
+      action :delete
+      restart_munin false
+    end
+  end
+end
+
+def suffix
+  new_resource.cluster.tr("/", ":")
+end