#
# 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
