From 60ca9176d9a40297b506caa57bb6f6c40ed3433f Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Wed, 8 Mar 2023 18:33:24 +0000
Subject: [PATCH] Run smokeping exporter on gateways

---
 cookbooks/prometheus/recipes/smokeping.rb     | 43 +++++++++++++++++++
 .../templates/default/smokeping.yml.erb       | 16 +++++++
 roles/gateway.rb                              |  3 +-
 3 files changed, 61 insertions(+), 1 deletion(-)
 create mode 100644 cookbooks/prometheus/recipes/smokeping.rb
 create mode 100644 cookbooks/prometheus/templates/default/smokeping.yml.erb

diff --git a/cookbooks/prometheus/recipes/smokeping.rb b/cookbooks/prometheus/recipes/smokeping.rb
new file mode 100644
index 000000000..975f8a5c2
--- /dev/null
+++ b/cookbooks/prometheus/recipes/smokeping.rb
@@ -0,0 +1,43 @@
+#
+# Cookbook:: prometheus
+# Recipe:: smokeping
+#
+# Copyright:: 2023, 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 "prometheus"
+
+ip4_hosts = []
+ip6_hosts = []
+
+search(:node, "networking:interfaces") do |host|
+  next if host.name == node.name
+
+  ip4_hosts << host[:fqdn] unless host.interfaces(:role => :external, :family => :inet).empty?
+  ip6_hosts << host[:fqdn] unless host.interfaces(:role => :external, :family => :inet6).empty?
+end
+
+template "/etc/prometheus/exporters/smokeping.yml" do
+  source "smokeping.yml.erb"
+  owner "root"
+  group "root"
+  mode "644"
+  variables :ip4_hosts => ip4_hosts, :ip6_hosts => ip6_hosts
+end
+
+prometheus_exporter "smokeping" do
+  port 9374
+  options "--config.file=/etc/prometheus/exporters/smokeping.yml"
+end
diff --git a/cookbooks/prometheus/templates/default/smokeping.yml.erb b/cookbooks/prometheus/templates/default/smokeping.yml.erb
new file mode 100644
index 000000000..46caf47b9
--- /dev/null
+++ b/cookbooks/prometheus/templates/default/smokeping.yml.erb
@@ -0,0 +1,16 @@
+---
+target:
+- hosts:
+<% @ip4_hosts.each do |host| -%>
+  - <%= host %>
+<% end -%>
+  interval: 5s
+  network: ip4
+  size: 24
+- hosts:
+<% @ip6_hosts.each do |host| -%>
+  - <%= host %>
+<% end -%>
+  interval: 5s
+  network: ip6
+  size: 24
diff --git a/roles/gateway.rb b/roles/gateway.rb
index b9007b86e..a78f04bcf 100644
--- a/roles/gateway.rb
+++ b/roles/gateway.rb
@@ -14,5 +14,6 @@ default_attributes(
 )
 
 run_list(
-  "recipe[bind]"
+  "recipe[bind]",
+  "recipe[prometheus::smokeping]"
 )
-- 
2.39.5