adding postgresql support

hooks/charmhelpers/contrib/openstack/context.py

@@ -146,6 +146,36 @@ class SharedDBContext(OSContextGenerator):
                     'database': self.database,
                     'database_user': self.user,
                     'database_password': passwd,
+                    'database_type': 'mysql',
+                }
+                if context_complete(ctxt):
+                    return ctxt
+        return {}
+
+
+class PostgresqlDBContext(OSContextGenerator):
+    interfaces = ['pgsql-db']
+
+    def __init__(self, database=None):
+        self.database = database
+
+    def __call__(self):
+        self.database = self.database or config('database')
+        if self.database is None:
+            log('Could not generate postgresql_db context. '
+                'Missing required charm config options. '
+                '(database name)')
+            raise OSContextError
+        ctxt = {}
+
+        for rid in relation_ids(self.interfaces[0]):
+            for unit in related_units(rid):
+                ctxt = {
+                    'database_host': relation_get('host', rid=rid, unit=unit),
+                    'database': self.database,
+                    'database_user': relation_get('user', rid=rid, unit=unit),
+                    'database_password': relation_get('password', rid=rid, unit=unit),
+                    'database_type': 'postgresql',
                 }
                 if context_complete(ctxt):
                     return ctxt
@@ -199,7 +229,6 @@ class AMQPContext(OSContextGenerator):
 
         ctxt = {}
         for rid in relation_ids('amqp'):
-            ha_vip_only = False
             for unit in related_units(rid):
                 if relation_get('clustered', rid=rid, unit=unit):
                     ctxt['clustered'] = True
@@ -214,18 +243,16 @@ class AMQPContext(OSContextGenerator):
                                                       unit=unit),
                     'rabbitmq_virtual_host': vhost,
                 })
-                if relation_get('ha_queues', rid=rid, unit=unit) is not None:
-                    ctxt['rabbitmq_ha_queues'] = True
-
-                ha_vip_only = relation_get('ha-vip-only',
-                                           rid=rid, unit=unit) is not None
-
                 if context_complete(ctxt):
                     # Sufficient information found = break out!
                     break
             # Used for active/active rabbitmq >= grizzly
-            if ('clustered' not in ctxt or ha_vip_only) \
-                    and len(related_units(rid)) > 1:
+            if ('clustered' not in ctxt or relation_get('ha-vip-only') == 'True') and \
+               len(related_units(rid)) > 1:
+                if relation_get('ha_queues'):
+                    ctxt['rabbitmq_ha_queues'] = relation_get('ha_queues')
+                else:
+                    ctxt['rabbitmq_ha_queues'] = False
                 rabbitmq_hosts = []
                 for unit in related_units(rid):
                     rabbitmq_hosts.append(relation_get('private-address',

hooks/glance_relations.py

@@ -22,7 +22,9 @@ from charmhelpers.core.hookenv import (
     config,
     Hooks,
     log as juju_log,
+    ERROR,
     open_port,
+    is_relation_made,
     relation_get,
     relation_set,
     relation_ids,
@@ -79,10 +81,29 @@ def install_hook():
 
 @hooks.hook('shared-db-relation-joined')
 def db_joined():
+    if is_relation_made('pgsql-db'):
+        # error, postgresql is used
+        e = ('Attempting to associate a mysql database when there is already '
+             'associated a postgresql one')
+        juju_log(e, level=ERROR)
+        raise Exception(e)
+
     relation_set(database=config('database'), username=config('database-user'),
                  hostname=unit_get('private-address'))
 
 
+@hooks.hook('pgsql-db-relation-joined')
+def pgsql_db_joined():
+    if is_relation_made('shared-db'):
+        # raise error
+        e = ('Attempting to associate a postgresql database when there is already '
+             'associated a mysql one')
+        juju_log(e, level=ERROR)
+        raise Exception(e)
+
+    relation_set(database=config('database'))
+
+
 @hooks.hook('shared-db-relation-changed')
 @restart_on_change(restart_map())
 def db_changed():
@@ -108,6 +129,31 @@ def db_changed():
         migrate_database()
 
 
+@hooks.hook('pgsql-db-relation-changed')
+@restart_on_change(restart_map())
+def pgsql_db_changed():
+    rel = get_os_codename_package("glance-common")
+
+    if 'pgsql-db' not in CONFIGS.complete_contexts():
+        juju_log('pgsql-db relation incomplete. Peer not ready?')
+        return
+
+    CONFIGS.write(GLANCE_REGISTRY_CONF)
+    # since folsom, a db connection setting in glance-api.conf is required.
+    if rel != "essex":
+        CONFIGS.write(GLANCE_API_CONF)
+
+    if eligible_leader(CLUSTER_RES):
+        if rel == "essex":
+            status = call(['glance-manage', 'db_version'])
+            if status != 0:
+                juju_log('Setting version_control to 0')
+                check_call(["glance-manage", "version_control", "0"])
+
+        juju_log('Cluster leader, performing db sync')
+        migrate_database()
+
+
 @hooks.hook('image-service-relation-joined')
 def image_service_joined(relation_id=None):
     if not eligible_leader(CLUSTER_RES):

hooks/glance_utils.py

@@ -46,7 +46,7 @@ CLUSTER_RES = "res_glance_vip"
 
 PACKAGES = [
     "apache2", "glance", "python-mysqldb", "python-swift",
-    "python-keystone", "uuid", "haproxy", ]
+    "python-psycopg2", "python-keystone", "uuid", "haproxy", ]
 
 SERVICES = [
     "glance-api", "glance-registry", ]
@@ -75,12 +75,14 @@ def ceph_config_file():
 CONFIG_FILES = OrderedDict([
     (GLANCE_REGISTRY_CONF, {
         'hook_contexts': [context.SharedDBContext(),
+                          context.PostgresqlDBContext(),
                           context.IdentityServiceContext(),
                           context.SyslogContext()],
         'services': ['glance-registry']
     }),
     (GLANCE_API_CONF, {
         'hook_contexts': [context.SharedDBContext(),
+                          context.PostgresqlDBContext(),
                           context.AMQPContext(),
                           context.IdentityServiceContext(),
                           glance_contexts.CephGlanceContext(),

metadata.yaml

@@ -14,6 +14,8 @@ provides:
 requires:
   shared-db:
     interface: mysql-shared
+  pgsql-db:
+    interface: pgsql
   amqp:
     interface: rabbitmq
   object-store:

revision

@@ -1 +1 @@
-148
+149

templates/folsom/glance-api.conf

@@ -20,7 +20,7 @@ bind_port = 9292
 log_file = /var/log/glance/api.log
 backlog = 4096
 {% if database_host %}
-sql_connection = mysql://{{ database_user }}:{{ database_password }}@{{ database_host }}/{{ database }}
+sql_connection = {{ database_type }}://{{ database_user }}:{{ database_password }}@{{ database_host }}/{{ database }}
 {% else %}
 sql_connection = sqlite:////var/lib/glance/glance.sqlite
 {% endif %}

templates/glance-registry.conf

@@ -7,7 +7,7 @@ bind_port = 9191
 log_file = /var/log/glance/registry.log
 backlog = 4096
 {% if database_host %}
-sql_connection = mysql://{{ database_user }}:{{ database_password }}@{{ database_host }}/{{ database }}
+sql_connection = {{ database_type }}://{{ database_user }}:{{ database_password }}@{{ database_host }}/{{ database }}
 {% endif %}
 sql_idle_timeout = 3600
 api_limit_max = 1000