Fixes

lib/charm/openstack/base_charm.py

@@ -0,0 +1,90 @@
+from charm.openstack.ip import PUBLIC, INTERNAL, ADMIN, canonical_url
+from charmhelpers.core.hookenv import config
+
+class OpenStackCharm(object):
+
+    packages = []
+    """Packages to install"""
+
+    api_ports = {}
+    """
+    Dictionary mapping services to ports for public, admin and
+    internal endpoints
+    """
+
+    service_type = None
+    """Keystone endpoint type"""
+
+    default_service = None
+    """Default service for the charm"""
+
+    def __init__(self):
+        self.config = config()
+
+    def install(self):
+        """
+        Install packages related to this charm based on
+        contents of packages attribute.
+        """
+        packages = filter_installed_packages(self.packages)
+        if packages:
+            status_set('maintenance', 'Installing packages')
+            apt_install(packages, fatal=True)
+
+    def api_port(self, service, endpoint_type=PUBLIC):
+        """
+        Determine the API port for a particular endpoint type
+        """
+        return self.api_ports[service][endpoint_type]
+
+    def configure_source(self):
+        """Configure installation source"""
+        configure_installation_source(self.config['openstack-origin'])
+        apt_update(fatal=True)
+
+    @property
+    def region(self):
+        """OpenStack Region"""
+        return self.config['region']
+
+    @property
+    def public_url(self):
+        """Public Endpoint URL"""
+        return "{}:{}".format(canonical_url(PUBLIC),
+                              self.api_port(self.default_service,
+                                            PUBLIC))
+    @property
+    def admin_url(self):
+        """Admin Endpoint URL"""
+        return "{}:{}".format(canonical_url(ADMIN),
+                              self.api_port(self.default_service,
+                                            ADMIN))
+    @property
+    def internal_url(self):
+        """Internal Endpoint URL"""
+        return "{}:{}".format(canonical_url(INTERNAL),
+                              self.api_port(self.default_service,
+                                            INTERNAL))
+
+class OpenStackCharmFactory(object):
+
+    releases = {}
+    """
+    Dictionary mapping OpenStack releases to their associated
+    Charm class for this charm
+    """
+
+    first_release = "icehouse"
+    """
+    First OpenStack release which this factory supports Charms for
+    """
+
+    @classmethod
+    def charm(cls, release=None):
+        """Get the right charm for the configured OpenStack series"""
+        if release and release in cls.releases:
+            return cls.releases[release]
+        else:
+            return cls.releases[cls.first_release]
+
+