Add glanceclient to heat

To enable implementation of a glance image resource, we first need to add
access to glanceclient in heat.

Change-Id: Ie0623e0307f6d3163ae584ceab89453f71f48053
Implements: blueprint glance-image

etc/heat/heat.conf.sample

@@ -698,6 +698,33 @@
 #insecure=false
 
 
+[clients_glance]
+
+#
+# Options defined in heat.common.config
+#
+
+# Type of endpoint in Identity service catalog to use for
+# communication with the OpenStack service. (string value)
+#endpoint_type=publicURL
+
+# Optional CA cert file to use in SSL connections. (string
+# value)
+#ca_file=<None>
+
+# Optional PEM-formatted certificate chain file. (string
+# value)
+#cert_file=<None>
+
+# Optional PEM-formatted file that contains the private key.
+# (string value)
+#key_file=<None>
+
+# If set, then the server's certificate will not be verified.
+# (boolean value)
+#insecure=false
+
+
 [clients_nova]
 
 #

heat/engine/clients.py

@@ -52,6 +52,12 @@ except ImportError:
     ceilometerclient = None
     logger.info(_('ceilometerclient not available'))
 
+try:
+    from glanceclient import client as glanceclient
+except ImportError:
+    glanceclient = None
+    logger.info(_('glanceclient not available'))
+
 _default_backend = "heat.engine.clients.OpenStackClients"
 
 cloud_opts = [
@@ -76,6 +82,7 @@ class OpenStackClients(object):
         self._trove = None
         self._ceilometer = None
         self._heat = None
+        self._glance = None
 
     @property
     def auth_token(self):
@@ -148,6 +155,31 @@ class OpenStackClients(object):
         self._swift = swiftclient.Connection(**args)
         return self._swift
 
+    def glance(self):
+        if glanceclient is None:
+            return None
+        if self._glance:
+            return self._glance
+
+        con = self.context
+        endpoint_type = self._get_client_option('glance', 'endpoint_type')
+        endpoint = self.url_for(service_type='image',
+                                endpoint_type=endpoint_type)
+        args = {
+            'auth_url': con.auth_url,
+            'service_type': 'image',
+            'project_id': con.tenant,
+            'token': self.auth_token,
+            'endpoint_type': endpoint_type,
+            'ca_file': self._get_client_option('glance', 'ca_file'),
+            'cert_file': self._get_client_option('glance', 'cert_file'),
+            'key_file': self._get_client_option('glance', 'key_file'),
+            'insecure': self._get_client_option('glance', 'insecure')
+        }
+
+        self._glance = glanceclient.Client('1', endpoint, **args)
+        return self._glance
+
     def neutron(self):
         if neutronclient is None:
             return None

heat/engine/resource.py

@@ -358,6 +358,9 @@ class Resource(object):
     def heat(self):
         return self.stack.clients.heat()
 
+    def glance(self):
+        return self.stack.clients.glance()
+
     def _do_action(self, action, pre_func=None, resource_data=None):
         '''
         Perform a transition to a new state via a specified action

requirements.txt

@@ -14,6 +14,7 @@ posix_ipc
 pycrypto>=2.6
 python-ceilometerclient>=1.0.6
 python-cinderclient>=1.0.6
+python-glanceclient>=0.9.0
 python-heatclient>=0.2.3
 python-keystoneclient>=0.7.0
 python-neutronclient>=2.3.4,<3

test-requirements.txt

@@ -7,7 +7,6 @@ mock>=1.0
 mox>=0.5.3
 oslosphinx
 oslotest
-python-glanceclient>=0.9.0
 sphinx>=1.1.2,<1.2
 testrepository>=0.0.18
 testscenarios>=0.4