1 files changed, 59 insertions, 0 deletions
diff --git a/charms/trusty/neutron-api-contrail/hooks/neutron_api_contrail_utils.py b/charms/trusty/neutron-api-contrail/hooks/neutron_api_contrail_utils.py
new file mode 100644
index 0000000..034f7fe
--- /dev/null
+++ b/charms/trusty/neutron-api-contrail/hooks/neutron_api_contrail_utils.py
@@ -0,0 +1,59 @@
+from socket import gethostbyname
+from subprocess import CalledProcessError, check_output
+
+import apt_pkg
+from apt_pkg import version_compare
+
+from charmhelpers.core.hookenv import (
+    related_units,
+    relation_get,
+    relation_ids
+)
+
+from charmhelpers.core.templating import render
+
+apt_pkg.init()
+
+def dpkg_version(pkg):
+    try:
+        return check_output(["dpkg-query", "-f", "${Version}\\n", "-W", pkg]).rstrip()
+    except CalledProcessError:
+        return None
+
+CONTRAIL_VERSION = dpkg_version("contrail-config-openstack")
+OPENSTACK_VERSION = dpkg_version("neutron-server")
+
+def contrail_api_ctx():
+    ctxs = [ { "api_server": vip if vip \
+                 else gethostbyname(relation_get("private-address", unit, rid)),
+               "api_port": port }
+             for rid in relation_ids("contrail-api")
+             for unit, port, vip in
+             ((unit, relation_get("port", unit, rid), relation_get("vip", unit, rid))
+              for unit in related_units(rid))
+             if port ]
+    return ctxs[0] if ctxs else {}
+
+def identity_admin_ctx():
+    ctxs = [ { "auth_host": gethostbyname(hostname),
+               "auth_port": relation_get("service_port", unit, rid),
+               "admin_user": relation_get("service_username", unit, rid),
+               "admin_password": relation_get("service_password", unit, rid),
+               "admin_tenant_name": relation_get("service_tenant_name", unit, rid) }
+             for rid in relation_ids("identity-admin")
+             for unit, hostname in
+             ((unit, relation_get("service_hostname", unit, rid)) for unit in related_units(rid))
+             if hostname ]
+    return ctxs[0] if ctxs else {}
+
+def write_plugin_config():
+    ctx = {}
+    ctx.update(contrail_api_ctx())
+    ctx.update(identity_admin_ctx())
+    if version_compare(OPENSTACK_VERSION, "1:2015.1~") >= 0:
+        ctx["authtoken"] = True
+    if version_compare(OPENSTACK_VERSION, "2:7.0.0") >= 0:
+        ctx["authtoken_creds"] = True
+    render("ContrailPlugin.ini",
+           "/etc/neutron/plugins/opencontrail/ContrailPlugin.ini",
+           ctx, "root", "neutron", 0440)