From ed01537d8749e38350d6a52c4cc9be473b2c44c4 Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Tue, 22 Sep 2020 17:44:26 +0000
Subject: [PATCH] Add passenger exporter

---
 cookbooks/passenger/metadata.rb            | 1 +
 cookbooks/passenger/recipes/default.rb     | 6 ++++++
 cookbooks/prometheus/resources/exporter.rb | 2 ++
 3 files changed, 9 insertions(+)

diff --git a/cookbooks/passenger/metadata.rb b/cookbooks/passenger/metadata.rb
index 69e22f4a3..42fc95c2a 100644
--- a/cookbooks/passenger/metadata.rb
+++ b/cookbooks/passenger/metadata.rb
@@ -9,4 +9,5 @@ supports          "ubuntu"
 depends           "apache"
 depends           "apt"
 depends           "munin"
+depends           "prometheus"
 depends           "systemd"
diff --git a/cookbooks/passenger/recipes/default.rb b/cookbooks/passenger/recipes/default.rb
index 5ad026023..95abd7890 100644
--- a/cookbooks/passenger/recipes/default.rb
+++ b/cookbooks/passenger/recipes/default.rb
@@ -20,6 +20,7 @@
 include_recipe "apache"
 include_recipe "apt"
 include_recipe "munin"
+include_recipe "prometheus"
 
 package "ruby#{node[:passenger][:ruby_version]}"
 package "ruby#{node[:passenger][:ruby_version]}-dev"
@@ -56,3 +57,8 @@ munin_plugin "passenger_memory"
 munin_plugin "passenger_processes"
 munin_plugin "passenger_queues"
 munin_plugin "passenger_requests"
+
+prometheus_exporter "passenger" do
+  port 9149
+  environment "PASSENGER_INSTANCE_REGISTRY_DIR" => node[:passenger][:instance_registry_dir]
+end
diff --git a/cookbooks/prometheus/resources/exporter.rb b/cookbooks/prometheus/resources/exporter.rb
index ba214b5d6..5896a1b46 100644
--- a/cookbooks/prometheus/resources/exporter.rb
+++ b/cookbooks/prometheus/resources/exporter.rb
@@ -23,12 +23,14 @@ property :exporter, :kind_of => String, :name_property => true
 property :port, :kind_of => Integer, :required => [:create]
 property :listen_switch, :kind_of => String, :default => "web.listen-address"
 property :options, :kind_of => [String, Array]
+property :environment, :kind_of => Hash, :default => {}
 
 action :create do
   systemd_service service_name do
     description "Prometheus #{new_resource.exporter} exporter"
     type "simple"
     user "root"
+    environment new_resource.environment
     exec_start "#{executable_path} #{executable_options}"
     private_tmp true
     protect_system "strict"
-- 
2.43.2