#
# Cookbook:: logstash
# Recipe:: default
#
# 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
#
#     https://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.
#

include_recipe "elasticsearch"
include_recipe "networking"

keys = data_bag_item("logstash", "keys")

package %w[
  openjdk-11-jre-headless
  logstash
]

cookbook_file "/var/lib/logstash/beats.crt" do
  source "beats.crt"
  user "root"
  group "logstash"
  mode "644"
  notifies :restart, "service[logstash]"
end

file "/var/lib/logstash/beats.key" do
  content keys["beats"].join("\n")
  user "root"
  group "logstash"
  mode "640"
  notifies :restart, "service[logstash]"
end

template "/etc/logstash/conf.d/chef.conf" do
  source "logstash.conf.erb"
  user "root"
  group "root"
  mode "644"
  notifies :start, "service[logstash]"
end

file "/etc/logrotate.d/logstash" do
  mode "644"
end

template "/etc/default/logstash" do
  source "logstash.default.erb"
  user "root"
  group "root"
  mode "644"
  notifies :restart, "service[logstash]"
end

service "logstash" do
  action [:enable, :start]
end

template "/etc/cron.daily/expire-logstash" do
  source "expire.erb"
  owner "root"
  group "root"
  mode "755"
end

forwarders = []

search(:node, "recipes:logstash\\:\\:forwarder").each do |forwarder|
  forwarders.append(forwarder.ipaddresses(:role => :external))
end

search(:node, "roles:gateway").each do |forwarder|
  forwarders.append(forwarder.ipaddresses(:role => :external))
end

firewall_rule "accept-logstash" do
  action :accept
  context :incoming
  protocol :tcp
  source forwarders
  dest_ports %w[5043 5044]
  source_ports "1024-65535"
  not_if { forwarders.empty? }
end