First stab at the notifications backend role.

playbooks/groups/notifs-backend.yml

@@ -59,7 +59,7 @@
 
   roles:
   - /srv/web/infra/ansible/roles/fedmsg-hub
-  #- /srv/web/infra/ansible/roles/notifs-backend
+  - /srv/web/infra/ansible/roles/notifs-backend
 
   vars_files: 
    - /srv/web/infra/ansible/vars/global.yml

roles/notifs-backend/files/patched-fedmsg-hub

@@ -0,0 +1,16 @@
+#!/usr/bin/python
+# This file is managed by ansible.
+#
+# Its like "permanent hotfix" so that the fedmsg-hub loads
+# the forward-compat sqlalchemy.
+#
+
+__requires__ = ['fedmsg', "sqlalchemy>=0.8"]
+import sys
+from pkg_resources import load_entry_point
+
+if __name__ == '__main__':
+    sys.exit(
+        load_entry_point('fedmsg', 'console_scripts', 'fedmsg-hub')()
+    )
+

roles/notifs-backend/tasks/main.yml

@@ -0,0 +1,30 @@
+---
+# Configuration for the notifications consumer
+
+- name: install needed packages
+  yum: pkg=$item state=installed
+  with_items:
+  - python-fmn-consumer
+  - python-psycopg2
+  - libsemanage-python
+
+- name: copy database configuration
+  template: >
+    src=$item dest=/etc/fedmsg.d/$item
+    owner=fedmsg group=fedmsg mode=0600
+  with_items:
+  - fmn.consumer.py
+  notify:
+  - restart fedmsg-hub
+
+# Here I'm "permanently" hotfixing the fedmsg-hub
+# It needs to load the forward-compat sqlalchemy0.7 package from the get-go.
+- name: copy over patched fedmsg-hub
+  copy: >
+    src=patched-fedmsg-hub dest=/usr/bin/fedmsg-hub
+    owner=root group=root mode=0755
+  tags:
+  - patches
+  - hotfix
+  notify:
+  - restart fedmsg-hub

roles/notifs-backend/templates/fmn.consumer.py

@@ -0,0 +1,36 @@
+{% if env == 'staging' %}
+domain = "stg.fedoraproject.org"
+ircnick = "fedora-notifstg"
+{% else %}
+domain = "fedoraproject.org"
+ircnick = "fedora-notifs"
+{% endif %}
+
+base = "https://apps.%s/notifications/" % domain
+
+config = {
+    # Consumer stuff
+    "fmn.consumer.enabled": True,
+    "fmn.sqlalchemy.uri": "postgresql://${notifs_db_user}:${notifs_db_password}@db-notifs/notifications",
+
+    ## Backend stuff ##
+    # Email
+    "fmn.email.mailserver": "bastion.fedoraproject.org:25",
+    "fmn.email.from_address": "notifications@" + domain,
+
+    # IRC
+    "fmn.irc.network": "irc.freenode.net",
+    "fmn.irc.nickname": ircnick,
+    "fmn.irc.port": 6667,
+    "fmn.irc.timeout": 120,
+
+    # GCM - Android notifs
+    "fmn.gcm.post_url": "wat",
+    "fmn.gcm.api_key": "wat",
+
+    # Confirmation urls:
+    "fmn.base_url": base,
+    "fmn.acceptance_url": base + "confirm/accept/{secret}",
+    "fmn.rejection_url": base + "confirm/reject/{secret}",
+    "fmn.support_email": "notifications@" + domain,
+}