Implement Swift storage backend for Glance

Change-Id: I3ed654c669a47c28450f40d1ce369769a7221e52

packstack/plugins/glance_200.py

@@ -53,6 +53,23 @@ def initConfig(controller):
          "USE_DEFAULT": False,
          "NEED_CONFIRM": True,
          "CONDITION": False},
+
+        {"CMD_OPTION": "glance-backend",
+         "USAGE": ("Glance storage backend controls how Glance stores disk "
+                   "images. Supported values: file, swift. Note that Swift "
+                   "installation have to be enabled to have swift backend "
+                   "working. Otherwise Packstack will fallback to 'file'."),
+         "PROMPT": "Glance storage backend",
+         "OPTION_LIST": ["file", "swift"],
+         "VALIDATORS": [validators.validate_options],
+         "PROCESSORS": [process_backend],
+         "DEFAULT_VALUE": "file",
+         "MASK_INPUT": False,
+         "LOOSE_VALIDATION": False,
+         "CONF_NAME": "CONFIG_GLANCE_BACKEND",
+         "USE_DEFAULT": False,
+         "NEED_CONFIRM": False,
+         "CONDITION": False},
     ]
     group = {"GROUP_NAME": "GLANCE",
              "DESCRIPTION": "Glance Config parameters",
@@ -80,6 +97,14 @@ def initSequences(controller):
     controller.addSequence("Installing OpenStack Glance", [], [], glancesteps)
 
 
+#------------------------- helper functions -------------------------
+
+def process_backend(value, param_name, config):
+    if value == 'swift' and config['CONFIG_SWIFT_INSTALL'] != 'y':
+        return 'file'
+    return value
+
+
 #-------------------------- step functions --------------------------
 
 def create_keystone_manifest(config, messages):
@@ -101,6 +126,9 @@ def create_manifest(config, messages):
         mq_template = get_mq(config, "glance_ceilometer")
         manifestdata += getManifestTemplate(mq_template)
 
+    manifestdata += getManifestTemplate(
+        'glance_%s.pp' % config['CONFIG_GLANCE_BACKEND'])
+
     config['FIREWALL_SERVICE_NAME'] = "glance"
     config['FIREWALL_PORTS'] = "'9292'"
     config['FIREWALL_CHAIN'] = "INPUT"

packstack/puppet/templates/glance.pp

@@ -11,8 +11,6 @@ class {"glance::api":
     mysql_module => '2.2',
 }
 
-class { 'glance::backend::file': }
-
 class {"glance::registry":
     auth_host => "%(CONFIG_CONTROLLER_HOST)s",
     keystone_tenant => "services",

packstack/puppet/templates/glance_file.pp

@@ -0,0 +1,5 @@
+
+# TO-DO: Make this configurable
+class { 'glance::backend::file':
+   filesystem_store_datadir => '/var/lib/glance/images/'
+}

packstack/puppet/templates/glance_swift.pp

@@ -0,0 +1,10 @@
+
+class { 'glance::backend::swift':
+  swift_store_user                    => 'services:glance',
+  swift_store_key                     => '%(CONFIG_GLANCE_KS_PW)s',
+  swift_store_auth_address            => 'http://%(CONFIG_CONTROLLER_HOST)s:35357/v2.0/',
+  swift_store_container               => 'glance',
+  swift_store_auth_version            => '2',
+  swift_store_large_object_size       => '5120',
+  swift_store_create_container_on_put => true
+}