admin: skip workflow graph if graphviz fails (#11494)

2016-06-23 11:59:55 +02:00 · 2016-06-23 11:59:55 +02:00 · c1a46ac67d
parent 071bd24885
commit c1a46ac67d
1 changed files with 2 additions and 0 deletions
--- a/wcs/admin/workflows.py
+++ b/wcs/admin/workflows.py
@ -177,6 +177,8 @@ def graphviz(workflow, url_prefix='', select=None, svg=True,
        try:
            process = Popen(['dot', '-Tsvg'], stdin=PIPE, stdout=PIPE)
            out, err = process.communicate(out)
+            if process.returncode != 0:
+                return ''
        except OSError:
            return ''
        out = graphviz_post_treatment(out, revert_colours)