Configure fastly exporter for prometheus

[chef.git] / cookbooks / prometheus / resources / exporter.rb

diff --git a/cookbooks/prometheus/resources/exporter.rb b/cookbooks/prometheus/resources/exporter.rb
index 08c0e03b749a4f83e44f8c503be246652352dfa9..82c2957c020a6235e76885380802c75c423169c5 100644 (file)
--- a/cookbooks/prometheus/resources/exporter.rb
+++ b/cookbooks/prometheus/resources/exporter.rb
@@ -22,30 +22,30 @@ default_action :create
 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 :package, :kind_of => String
-property :package_options, :kind_of => String
-property :defaults, :kind_of => String
-property :service, :kind_of => String
+property :listen_type, :kind_of => String, :default => "address"
+property :user, :kind_of => String, :default => "root"
+property :options, :kind_of => [String, Array]
+property :environment, :kind_of => Hash, :default => {}
 
 action :create do
-  package package_name do
-    options new_resource.package_options
-  end
-
-  template defaults_name do
-    source "defaults.erb"
-    owner "root"
-    group "root"
-    mode "644"
-    variables new_resource.to_hash.merge(:listen_address => listen_address)
+  systemd_service service_name do
+    description "Prometheus #{new_resource.exporter} exporter"
+    type "simple"
+    user new_resource.user
+    environment new_resource.environment
+    exec_start "#{executable_path} #{executable_options}"
+    private_tmp true
+    protect_system "strict"
+    protect_home true
+    no_new_privileges true
   end
 
   service service_name do
     action [:enable, :start]
-    subscribes :restart, "template[#{defaults_name}]"
+    subscribes :restart, "systemd_service[#{service_name}]"
   end
 
-  firewall_rule "accept-prometheus-#{new_resource.name}" do
+  firewall_rule "accept-prometheus-#{new_resource.exporter}" do
     action :accept
     source "osm"
     dest "fw"
@@ -62,18 +62,35 @@ action :delete do
     action [:disable, :stop]
   end
 
-  package package_name do
-    action :purge
+  systemd_service service_name do
+    action :delete
+  end
+end
+
+action :restart do
+  service service_name do
+    action :restart
   end
 end
 
 action_class do
-  def package_name
-    new_resource.package || "prometheus-#{new_resource.exporter}-exporter"
+  def service_name
+    "prometheus-#{new_resource.exporter}-exporter"
   end
 
-  def defaults_name
-    new_resource.defaults || "/etc/default/prometheus-#{new_resource.exporter}-exporter"
+  def executable_path
+    "/opt/prometheus/exporters/#{new_resource.exporter}/#{new_resource.exporter}_exporter"
+  end
+
+  def executable_options
+    "--#{new_resource.listen_switch}=#{listen_argument} #{Array(new_resource.options).join(' ')}"
+  end
+
+  def listen_argument
+    case new_resource.listen_type
+    when "address" then listen_address
+    when "url" then "http://#{listen_address}/metrics"
+    end
   end
 
   def listen_address
@@ -83,8 +100,8 @@ action_class do
       "#{node[:prometheus][:address]}:#{new_resource.port}"
     end
   end
+end
 
-  def service_name
-    new_resource.service || "prometheus-#{new_resource.exporter}-exporter"
-  end
+def after_created
+  subscribes :restart, "git[/opt/prometheus]"
 end