migrate code over from xos repo

Change-Id: I764ac3196babdb1ce78dded2b2d8d6ad6e965ca6
diff --git a/xos/synchronizer/client.py b/xos/synchronizer/client.py
new file mode 100644
index 0000000..d1383f4
--- /dev/null
+++ b/xos/synchronizer/client.py
@@ -0,0 +1,210 @@
+import urlparse
+try:
+    from keystoneauth1.identity import v2 as keystoneauth_v2
+    from keystoneauth1 import session as keystone_session
+    from keystoneclient.v2_0 import client as keystone_client
+    #from glance import client as glance_client
+    import glanceclient
+    from novaclient.v2 import client as nova_client
+    from neutronclient.v2_0 import client as neutron_client 
+    has_openstack = True
+except:
+    has_openstack = False
+
+from xos.config import Config
+
+def require_enabled(callable):
+    def wrapper(*args, **kwds):
+        if has_openstack:
+            return callable(*args, **kwds)
+        else:
+            return None
+    return wrapper
+
+def parse_novarc(filename):
+    opts = {}
+    f = open(filename, 'r')
+    for line in f:
+        try:
+            line = line.replace('export', '').strip()
+            parts = line.split('=')
+            if len(parts) > 1:
+                value = parts[1].replace("\'", "")
+                value = value.replace('\"', '')
+                opts[parts[0]] = value
+        except:
+            pass
+    f.close()
+    return opts
+
+class Client:
+    def __init__(self, username=None, password=None, tenant=None, url=None, token=None, endpoint=None, controller=None, cacert=None, admin=True, *args, **kwds):
+       
+        self.has_openstack = has_openstack
+        self.url = controller.auth_url
+        if admin:
+            self.username = controller.admin_user
+            self.password = controller.admin_password
+            self.tenant = controller.admin_tenant
+        else:
+            self.username = None
+            self.password = None
+            self.tenant = None
+
+        if username:
+            self.username = username
+        if password:
+            self.password = password
+        if tenant:
+            self.tenant = tenant
+        if url:
+            self.url = url
+        if token:
+            self.token = token    
+        if endpoint:
+            self.endpoint = endpoint
+
+        if cacert:
+            self.cacert = cacert
+        else:
+            self.cacert = getattr(Config(), "nova_ca_ssl_cert", "None")
+
+        #if '@' in self.username:
+        #    self.username = self.username[:self.username.index('@')]
+
+class KeystoneClient(Client):
+    def __init__(self, *args, **kwds):
+        Client.__init__(self, *args, **kwds)
+        if has_openstack:
+            auth = keystoneauth_v2.Password(username=self.username,
+                                            password=self.password,
+                                            tenant_name=self.tenant,
+                                            auth_url=self.url,
+                                            )
+            sess = keystone_session.Session(auth=auth, verify=self.cacert, )
+            self.client = keystone_client.Client(session=sess)
+
+    @require_enabled
+    def connect(self, *args, **kwds):
+        self.__init__(*args, **kwds)
+
+    @require_enabled
+    def __getattr__(self, name):
+        return getattr(self.client, name)
+
+
+class Glance(Client):
+    def __init__(self, *args, **kwds):
+        Client.__init__(self, *args, **kwds)
+        if has_openstack:
+            self.client = glanceclient.get_client(host='0.0.0.0',
+                                                   username=self.username,
+                                                   password=self.password,
+                                                   tenant=self.tenant,
+                                                   auth_url=self.url,
+                                                   cacert=self.cacert
+                                                   )
+    @require_enabled
+    def __getattr__(self, name):
+        return getattr(self.client, name)
+
+class GlanceClient(Client):
+    def __init__(self, version, endpoint, token, cacert=None, *args, **kwds):
+        Client.__init__(self, *args, **kwds)
+        if has_openstack:
+            self.client = glanceclient.Client(version, 
+                endpoint=endpoint, 
+                token=token,
+                cacert=cacert
+            )
+
+    @require_enabled
+    def __getattr__(self, name):
+        return getattr(self.client, name)        
+
+class NovaClient(Client):
+    def __init__(self, *args, **kwds):
+        Client.__init__(self, *args, **kwds)
+        if has_openstack:
+            self.client = nova_client.client.Client(
+                    "2",
+                    username=self.username,
+                    api_key=self.password,
+                    project_id=self.tenant,
+                    auth_url=self.url,
+                    region_name='',
+                    extensions=[],
+                    service_type='compute',
+                    service_name='',
+                    cacert=self.cacert
+                    )
+
+    @require_enabled
+    def connect(self, *args, **kwds):
+        self.__init__(*args, **kwds)
+
+    @require_enabled
+    def __getattr__(self, name):
+        return getattr(self.client, name)
+
+class NovaDB(Client):
+    def __init__(self, *args, **kwds):
+        Client.__init__(self, *args, **kwds)
+        if has_openstack:
+            self.ctx = get_admin_context()
+            nova_db_api.FLAGS(default_config_files=['/etc/nova/nova.conf'])
+            self.client = nova_db_api
+
+
+    @require_enabled
+    def connect(self, *args, **kwds):
+        self.__init__(*args, **kwds)
+
+    @require_enabled
+    def __getattr__(self, name):
+        return getattr(self.client, name)
+
+class NeutronClient(Client):
+    def __init__(self, *args, **kwds):
+        Client.__init__(self, *args, **kwds)
+        if has_openstack:
+            self.client = neutron_client.Client(username=self.username,
+                                                password=self.password,
+                                                tenant_name=self.tenant,
+                                                auth_url=self.url,
+                                                ca_cert=self.cacert
+                                                )
+    @require_enabled
+    def connect(self, *args, **kwds):
+        self.__init__(*args, **kwds)
+
+    @require_enabled
+    def __getattr__(self, name):
+        return getattr(self.client, name)
+
+class OpenStackClient:
+    """
+    A simple native shell to the openstack backend services.
+    This class can receive all nova calls to the underlying testbed
+    """
+
+    def __init__ ( self, *args, **kwds) :
+        # instantiate managers
+        self.keystone = KeystoneClient(*args, **kwds)
+        url_parsed = urlparse.urlparse(self.keystone.url)
+        hostname = url_parsed.netloc.split(':')[0]
+        token = self.keystone.client.tokens.authenticate(username=self.keystone.username, password=self.keystone.password, tenant_name=self.keystone.tenant)
+#        glance_endpoint = self.keystone.client.service_catalog.url_for(service_type='image', endpoint_type='publicURL')
+#        self.glanceclient = GlanceClient('1', endpoint=glance_endpoint, token=token.id, **kwds)
+        self.nova = NovaClient(*args, **kwds)
+        # self.nova_db = NovaDB(*args, **kwds)
+        self.neutron = NeutronClient(*args, **kwds)
+    
+
+    @require_enabled
+    def connect(self, *args, **kwds):
+        self.__init__(*args, **kwds)
+
+    @require_enabled
+    def authenticate(self):
+        return self.keystone.authenticate()