Updated memcached formula, allow changed in memcached config file

memcached/init.sls

@@ -1,3 +1,18 @@
+# Copyright 2013 Hewlett-Packard Development Company, L.P.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+#
+
 memcached:
   pkg:
     - installed
@@ -6,3 +21,16 @@ memcached:
     - enable: True
     - require:
       - pkg: memcached
+    - watch: 
+      - file: /etc/memcached.conf
+
+/etc/memcached.conf:
+  file:
+    - managed
+    - template: jinja
+    - user: root
+    - group: root
+    - mode: 644
+    - source: salt://memcached/templates/memcached.conf
+    - require:
+      - pkg: memcached

memcached/macros.sls

@@ -0,0 +1,40 @@
+# Copyright 2013 Hewlett-Packard Development Company, L.P.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+#
+{% from "memcached/map.jinja" import defaults with context -%}
+
+# Macro:
+#
+# get_config_item(item_name)
+# item_name = parameter in the config to get
+#
+{%- macro get_config_item(item_name) -%}
+{%- set default = defaults['config'].get(item_name, None) -%}
+{%- set value = salt['pillar.get']('memcached:%s' % (item_name), default) -%}
+{%- if value is string or value is number -%}
+{{ value }}
+{%- elif value is iterable -%}
+{%- if not value -%}
+None
+{%- else -%}
+{{ value | join(', ') }}
+{%- endif -%}
+{%- elif value is none -%}
+None
+{%- elif value -%}
+True
+{%- elif not value -%}
+False
+{%- endif -%}
+{%- endmacro -%}

memcached/map.jinja

@@ -0,0 +1,15 @@
+{% set defaults = {
+    'config':{
+        'deamonize': True,
+        'verbose_level': 0,
+        'memory_cap': 64,
+        'port': 11211,
+        'user':' memcached',
+        'listen_address': '127.0.0.1',
+        'max_connections': 1024,
+        'lock_paged_memory': False,
+        'error_on_mem_full': False,
+        'max_core_file_limit': False,
+        'log_file': '/var/log/memcached'
+    }  
+} %}

memcached/templates/memcached.conf

@@ -0,0 +1,49 @@
+{% from 'memcached/macros.sls' import get_config_item with context -%}
+# memcached default config file
+# 2003 - Jay Bonci <jaybonci@debian.org>
+# This configuration file is read by the start-memcached script provided as
+# part of the Debian GNU/Linux distribution.
+
+# Run memcached as a daemon. This command is implied, and is not needed for the
+# daemon to run. See the README.Debian that comes with this package for more
+# information.
+{{ '-d' if get_config_item('deamonize') == 'True' else ''}}
+
+# Log memcached's output to /var/log/memcached
+logfile  {{ get_config_item('log_file') }}
+
+# Be verbose
+{{ '-v' if get_config_item('verbose_level') == '1' else '' -}}
+{{ '-vv' if get_config_item('verbose_level') == '2' else '' -}}
+
+# Start with a cap of 64 megs of memory. It's reasonable, and the daemon default
+# Note that the daemon will grow to this size, but does not start out holding this much
+# memory
+-m {{ get_config_item('memory_cap') }}
+
+# Default connection port is 11211
+-p {{ get_config_item('port') }}
+
+# Run the daemon as root. The start-memcached will default to running as root if no
+# -u command is present in this config file
+-u {{ get_config_item('user') }}
+
+# Specify which IP address to listen on. The default is to listen on all IP addresses
+# This parameter is one of the only security measures that memcached has, so make sure
+# it's listening on a firewalled interface.
+-l {{ get_config_item('listen_address') }}
+
+# Limit the number of simultaneous incoming connections. The daemon default is 1024
+-c {{ get_config_item('max_connections') }}
+
+# Lock down all paged memory. Consult with the README and homepage before you do this
+# -k 
+{{ '-k' if get_config_item('lock_paged_memory') == 'True' else '' }}
+
+# Return error when memory is exhausted (rather than removing items)
+# -M 
+{{ '-M' if get_config_item('error_on_mem_full') == 'True'  else '' }}
+
+# Maximize core file limit
+# -r 
+{{ '-r' if get_config_item('max_core_file_limit') == 'True' else '' }}

pillar.example

@@ -1,3 +1,12 @@
 # Collect the IPs of the memcached instances for use in application config
-mine_functions:
-  network.interfaces: [eth0]
+memcached:
+  deamonize: True,
+  verbose_level: 0,
+  memory_cap: 64,
+  port: 11211,
+  user: 'memcached',
+  listen_address: '127.0.0.1',
+  max_connections:1024,
+  lock_paged_memory: False,
+  error_on_mem_full: False,
+  max_core_file_limit: False