Changeset 5954004 for fedd

Timestamp:

Sep 20, 2011 10:53:18 AM (13 years ago)

Author:

Ted Faber <faber@…>

Branches:

compt_changes, info-ops, master

Children:

65f6442

Parents:

66879a0

Message:

Log missing graphviz. Closes #21

File:

• fedd/federation/experiment_control.py (modified) (1 diff)

fedd/federation/experiment_control.py

@@ -695 +695 @@
 
         # Use dot to create a visualization
-        dot = Popen([neato, '-Gstart=rand', '-Gepsilon=0.005', '-Gmaxiter=2000',
-                '-Gpack=true', dotname], stdout=PIPE, stderr=dnull,
-                close_fds=True)
+        try:
+            dot = Popen([neato, '-Gstart=rand', '-Gepsilon=0.005',
+                '-Gmaxiter=2000', '-Gpack=true', dotname], stdout=PIPE,
+                stderr=dnull, close_fds=True)
+        except EnvironmentError:
+            raise service_error(service_error.internal, 
+                    "Cannot generate visualization: is graphviz available?")
         dnull.close()