GET for topologies with tests

1 files changed, 34 insertions, 0 deletions

diff --git a/opendc/api/v2/topologies/topologyId/endpoint.py b/opendc/api/v2/topologies/topologyId/endpoint.py
new file mode 100644
index 00000000..ef541daa
--- /dev/null
+++ b/opendc/api/v2/topologies/topologyId/endpoint.py
@@ -0,0 +1,34 @@
+from opendc.models.topology import Topology
+from opendc.util import exceptions
+from opendc.util.rest import Response
+
+
+def GET(request):
+    """Get this Topology."""
+
+    # Make sure required parameters are there
+
+    try:
+        request.check_required_parameters(path={'topologyId': 'int'})
+    except exceptions.ParameterError as e:
+        return Response(400, str(e))
+
+    # Instantiate a Topology from the database
+
+    topology = Topology.from_id(request.params_path['topologyId'])
+
+    # Make sure this Topology exists
+
+    validation_error = topology.validate()
+    if validation_error is not None:
+        return validation_error    
+
+    # Make sure this user is authorized to view this Topology
+
+    access_error = topology.validate_user_access(request.google_id, False)
+    if access_error is not None:
+        return access_error
+
+    # Return this Topology
+
+    return Response(200, 'Successfully retrieved topology.', topology.obj)