Add support for mail notifications

Inspired from
http://clusterlabs.org/doc/en-US/Pacemaker/1.1/html-single/Pacemaker_Explained/#s-notification-email

attributes/default.rb

@@ -57,3 +57,10 @@ default[:pacemaker][:stonith][:per_node][:mode] = "all"
 # For instance:
 #  default[:pacemaker][:stonith][:per_node][:nodes][$node][:params] = 'hostname="foo" password="bar"'
 default[:pacemaker][:stonith][:per_node][:nodes] = {}
+
+default[:pacemaker][:notifications][:agent] = "ocf:heartbeat:ClusterMon"
+default[:pacemaker][:notifications][:smtp][:enabled] = false
+default[:pacemaker][:notifications][:smtp][:to] = ""
+default[:pacemaker][:notifications][:smtp][:from] = ""
+default[:pacemaker][:notifications][:smtp][:server] = ""
+default[:pacemaker][:notifications][:smtp][:prefix] = ""

recipes/default.rb

@@ -81,3 +81,4 @@ if platform_family? "rhel"
 end
 
 include_recipe "pacemaker::stonith"
+include_recipe "pacemaker::notifications"

recipes/notifications.rb

@@ -0,0 +1,66 @@
+#
+# Author:: Vincent Untz
+# Cookbook Name:: pacemaker
+# Recipe:: notifications
+#
+# Copyright 2014, SUSE
+#
+# 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.
+#
+
+smtp_resource = "smtp-notifications"
+clone_smtp_resource = "cl-#{smtp_resource}"
+
+if node[:pacemaker][:notifications][:smtp][:enabled]
+  raise "No SMTP server for mail notifications!" if node[:pacemaker][:notifications][:smtp][:server].empty?
+  raise "No sender address for mail notifications!" if node[:pacemaker][:notifications][:smtp][:to].empty?
+  raise "No recipient address for mail notifications!" if node[:pacemaker][:notifications][:smtp][:from].empty?
+
+  require 'shellwords'
+
+  server = Shellwords.shellescape(node[:pacemaker][:notifications][:smtp][:server])
+  to = Shellwords.shellescape(node[:pacemaker][:notifications][:smtp][:to])
+  from = Shellwords.shellescape(node[:pacemaker][:notifications][:smtp][:from])
+
+  options = "-H #{server}"
+  options += " -T #{to}"
+  options += " -F #{from}"
+
+  unless node[:pacemaker][:notifications][:smtp][:prefix].nil? || node[:pacemaker][:notifications][:smtp][:prefix].empty?
+    prefix = Shellwords.shellescape(node[:pacemaker][:notifications][:smtp][:prefix])
+    options += " -P #{prefix}"
+  end
+
+  pacemaker_primitive smtp_resource do
+    agent node[:pacemaker][:notifications][:agent]
+    params ({ "extra_options" => options })
+    action :create
+  end
+
+  pacemaker_clone clone_smtp_resource do
+    rsc smtp_resource
+    action [:create, :start]
+  end
+else
+  pacemaker_clone clone_smtp_resource do
+    rsc smtp_resource
+    action [:stop, :delete]
+    only_if "crm configure show #{clone_smtp_resource}"
+  end
+
+  pacemaker_primitive smtp_resource do
+    agent node[:pacemaker][:notifications][:agent]
+    action [:stop, :delete]
+    only_if "crm configure show #{smtp_resource}"
+  end
+end

spec/helpers/provider.rb

@@ -6,6 +6,9 @@ require File.expand_path('cib_object', this_dir)
 
 shared_context "a Pacemaker LWRP" do
   before(:each) do
+    stub_command("crm configure show smtp-notifications")
+    stub_command("crm configure show cl-smtp-notifications")
+
     runner_opts = {
       :step_into => [lwrp_name]
     }