First draft of statscache backend config.

playbooks/groups/statscache.yml

@@ -63,5 +63,5 @@
   handlers:
   - include: "{{ handlers }}/restart_services.yml"
 
-  #roles:
-  # TODO -- include statscache/backend here
+  roles:
+  - statscache/backend

roles/statscache/backend/tasks/main.yml

@@ -0,0 +1,35 @@
+---
+# Configuration for the notifications consumer
+
+- name: install needed packages
+  yum: pkg={{ item }} state=present
+  with_items:
+  - statscache-consumer
+  - statscache-plugins
+  - python-psycopg2
+  - libsemanage-python
+  tags:
+  - notifs
+  - notifs/backend
+
+- name: copy database configuration
+  template: >
+    src={{ item }} dest=/etc/fedmsg.d/{{ item }}
+    owner=fedmsg group=fedmsg mode=0600
+  with_items:
+  - statscache.py
+  notify:
+  - restart fedmsg-hub
+  tags:
+  - notifs
+  - notifs/backend
+
+- name: copy the alembic configuration for DBAs
+  template: >
+    src=alembic.ini dest=/usr/share/statscache/alembic.ini
+    owner=root group=sysadmin-dba mode=0660
+  notify:
+  - restart fedmsg-hub
+  tags:
+  - notifs
+  - notifs/backend

roles/statscache/backend/templates/alembic.ini

@@ -0,0 +1,53 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = /usr/share/statscache/alembic/
+
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# max length of characters to apply to the
+# "slug" field
+#truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+sqlalchemy.url = postgres://statscache:{{statscache_db_password}}@db01/statscache
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

roles/statscache/backend/templates/statscache.py

@@ -0,0 +1,37 @@
+import datetime
+
+
+config = {
+    "statscache.datagrepper.profile": False,
+
+    # Consumer stuff
+    "statscache.consumer.enabled": True,
+
+    "statscache.sqlalchemy.uri": "postgres://statscache:{{statscache_db_password}}@db01/statscache",
+
+    # stats models will go back at least this far (current value arbitrary)
+    "statscache.consumer.epoch": datetime.datetime(year=2015, month=8, day=8),
+
+    # stats models are updated at this frequency
+    "statscache.producer.frequency": datetime.timedelta(seconds=1),
+
+    # Configuration of web API
+    "statscache.app.maximum_rows_per_page": 100,
+    "statscache.app.default_rows_per_page": 100,
+
+    # Turn on logging for statscache
+    "logging": dict(
+        loggers=dict(
+            statscache={
+                "level": "DEBUG",
+                "propagate": False,
+                "handlers": ["console"],
+            },
+            statscache_plugins={
+                "level": "DEBUG",
+                "propagate": False,
+                "handlers": ["console"],
+            },
+        ),
+    ),
+}