From d4700a11b0cc6c03dace87c68bee802b43068c53 Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Sun, 24 Jul 2022 18:33:01 +0100
Subject: [PATCH] Increase scrape interval for fastly healthchecks

---
 cookbooks/prometheus/recipes/server.rb                    | 4 ++++
 cookbooks/prometheus/resources/exporter.rb                | 2 ++
 cookbooks/prometheus/templates/default/prometheus.yml.erb | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/cookbooks/prometheus/recipes/server.rb b/cookbooks/prometheus/recipes/server.rb
index 20275ab7a..1fe5b1e32 100644
--- a/cookbooks/prometheus/recipes/server.rb
+++ b/cookbooks/prometheus/recipes/server.rb
@@ -34,6 +34,7 @@ end
 
 prometheus_exporter "fastly_healthcheck" do
   port 9696
+  scrape_interval "1m"
   environment "FASTLY_API_TOKEN" => tokens["fastly"]
 end
 
@@ -201,11 +202,13 @@ search(:node, "recipes:prometheus\\:\\:default").sort_by(&:name).each do |client
       name = exporter[:name]
       address = exporter[:address]
       sni = exporter[:sni]
+      scrape_interval = exporter[:scrape_interval]
       metric_relabel = exporter[:metric_relabel] || []
     else
       name = key
       address = exporter
       sni = nil
+      scrape_interval = nil
       metric_relabel = []
     end
 
@@ -214,6 +217,7 @@ search(:node, "recipes:prometheus\\:\\:default").sort_by(&:name).each do |client
       :address => address,
       :sni => sni,
       :instance => client.name.split(".").first,
+      :scrape_interval => scrape_interval,
       :metric_relabel => metric_relabel
     }
   end
diff --git a/cookbooks/prometheus/resources/exporter.rb b/cookbooks/prometheus/resources/exporter.rb
index e1f56b09c..7ff729211 100644
--- a/cookbooks/prometheus/resources/exporter.rb
+++ b/cookbooks/prometheus/resources/exporter.rb
@@ -31,6 +31,7 @@ property :command, :kind_of => String
 property :options, :kind_of => [String, Array]
 property :environment, :kind_of => Hash, :default => {}
 property :service, :kind_of => String
+property :scrape_interval, :kind_of => String
 property :metric_relabel, :kind_of => Array
 property :register_target, :kind_of => [TrueClass, FalseClass], :default => true
 
@@ -69,6 +70,7 @@ action :create do
     node.default[:prometheus][:exporters][new_resource.port] = {
       :name => new_resource.exporter,
       :address => listen_address,
+      :scrape_interval => new_resource.scrape_interval,
       :metric_relabel => new_resource.metric_relabel
     }
   end
diff --git a/cookbooks/prometheus/templates/default/prometheus.yml.erb b/cookbooks/prometheus/templates/default/prometheus.yml.erb
index bd4113524..00f3c65df 100644
--- a/cookbooks/prometheus/templates/default/prometheus.yml.erb
+++ b/cookbooks/prometheus/templates/default/prometheus.yml.erb
@@ -57,6 +57,9 @@ scrape_configs:
         replacement: 127.0.0.1:9219
 <% @jobs.sort.each do |name, targets| -%>
   - job_name: <%= name %>
+<% if targets.first[:scrape_interval] -%>
+    scrape_interval: <%= targets.first[:scrape_interval] %>
+<% end -%>
 <% if targets.first[:sni] -%>
     tls_config:
       server_name: <%= targets.first[:sni] %>
-- 
2.43.2