Add ability to scrape additional hosts with Prometheus, and scrape from HomeAssistant

roles/stats/defaults/main.yml

@@ -36,3 +36,6 @@ stats_collection_interval: 15s
 # uncomment to scrape more hosts
 # stats_prometheus_additional_hosts:
 #  - 192.168.1.1:9100
+
+# uncomment to scrape metrics from HomeAssistant. You'll need to create a long lived access token.
+# stats_hass_long_lived_access_token: addfasdfasdf

roles/stats/templates/prometheus.yml.j2

@@ -56,3 +56,12 @@ scrape_configs:
 {% endfor %}
 {% endif %}
 
+
+  - job_name: "homeassistant"
+    metrics_path: /api/prometheus
+    authorization:
+      credentials: "{{ stats_hass_long_lived_access_token | default("abcd") }}"
+    static_configs:
+      - targets: [
+                    "{{ hostvars[inventory_hostname]['ansible_default_ipv4']['address'] }}:8123"
+                 ]