support providing extra alert receivers

Signed-off-by: Jakub Sokołowski <jakub@status.im>

defaults/main.yml

@@ -24,11 +24,16 @@ alertmanager_probe_timeout: '1000ms'
 alertmanager_probe_interval: '5s'
 
 # SMTP
-alertmanager_smtp_host: ~
-alertmanager_smtp_port: ~
-alertmanager_smtp_from: ~
-alertmanager_smtp_user: ~
-alertmanager_smtp_pass: ~
+#alertmanager_smtp_host: ~
+#alertmanager_smtp_port: ~
+#alertmanager_smtp_from: ~
+#alertmanager_smtp_user: ~
+#alertmanager_smtp_pass: ~
+alertmanager_smtp_receivers_extra: []
+#  - name: 'devops'
+#    email_configs:
+#      - to: 'devops@example.org'
+#        send_resolved: true
 
 # OAuth
 alertmanager_oauth_id: ~
@@ -47,9 +52,10 @@ alertmanager_group_interval: '3m'
 alertmanager_repeat_interval: '1h'
 
 # VictorOps paging service
-alertmanager_victorops_api_key: ~
-alertmanager_victorops_service_url: ~
-alertmanager_victorops_routing_key: ~
+alertmanager_victorops_enabled: false
+#alertmanager_victorops_api_key: ~
+#alertmanager_victorops_service_url: ~
+#alertmanager_victorops_routing_key: ~
 alertmanager_victorops_message_type: 'CRITICAL' # CRITICAL, WARNING, INFO
 alertmanager_victorops_monitoring_tool: 'metrics'
 alertmanager_victorops_state_message: |

templates/alertmanager.yml.j2

@@ -23,19 +23,33 @@ route:
   repeat_interval: '{{ alertmanager_repeat_interval | mandatory }}'
 
   routes:
-    # send all notifications to VictorOps.
+{% if alertmanager_victorops_enabled %}
     - receiver: 'victorops-alerts'
+      continue: true
+{% endif %}
+{% for extra_receiver in alertmanager_smtp_receivers_extra %}
+    - receiver: '{{ extra_receiver.name }}'
+      continue: true
+{% endfor %}
 
 receivers:
   - name: 'admin-email'
     email_configs:
-      - to: '{{ alertmanager_admin_email | mandatory }}'
-        send_resolved: true
+    - to: '{{ alertmanager_admin_email | mandatory }}'
+      send_resolved: true
+{% if alertmanager_victorops_enabled %}
 
   - name: 'victorops-alerts'
     victorops_configs:
-      - routing_key: '{{ alertmanager_victorops_routing_key | mandatory }}'
-        message_type: '{{ alertmanager_victorops_message_type | mandatory }}'
-        monitoring_tool: '{{ alertmanager_victorops_monitoring_tool | mandatory }}'
-        entity_display_name: '{{ alertmanager_victorops_display_name | mandatory | trim }}'
-        state_message: '{{ alertmanager_victorops_state_message | mandatory | trim }}'
+    - routing_key: '{{ alertmanager_victorops_routing_key | mandatory }}'
+      message_type: '{{ alertmanager_victorops_message_type | mandatory }}'
+      monitoring_tool: '{{ alertmanager_victorops_monitoring_tool | mandatory }}'
+      entity_display_name: '{{ alertmanager_victorops_display_name | mandatory | trim }}'
+      state_message: '{{ alertmanager_victorops_state_message | mandatory | trim }}'
+{% endif %}
+{% if alertmanager_smtp_receivers_extra|length > 0 %}
+{% filter indent(width=2) %}
+
+{{ alertmanager_smtp_receivers_extra | to_nice_yaml(indent=2) | trim }}
+{% endfilter %}
+{% endif %}