xenserver: Add --no-syslog feature to interface-reconfigure.

This makes it easier to do unit tests (some of which will be added in an
upcoming commit) by allowing messages to be read from stderr instead of
having to somehow intercept syslog calls.

Signed-off-by: Ben Pfaff <blp@nicira.com>

1 files changed, 15 insertions, 1 deletions

diff --git a/xenserver/opt_xensource_libexec_InterfaceReconfigure.py b/xenserver/opt_xensource_libexec_InterfaceReconfigure.py
index 576c36985..c7a231a8b 100644
--- a/xenserver/opt_xensource_libexec_InterfaceReconfigure.py
+++ b/xenserver/opt_xensource_libexec_InterfaceReconfigure.py
@@ -10,6 +10,7 @@
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU Lesser General Public License for more details.
 #
+import sys
 import syslog
 import os
 
@@ -25,12 +26,25 @@ def set_root_prefix(prefix):
     global the_root_prefix
     the_root_prefix = prefix
 
+log_destination = "syslog"
+def get_log_destination():
+    """Returns the current log destination.
+    'syslog' means "log to syslog".
+    'stderr' means "log to stderr"."""
+    return log_destination
+def set_log_destination(dest):
+    global log_destination
+    log_destination = dest
+
 #
 # Logging.
 #
 
 def log(s):
-    syslog.syslog(s)
+    if get_log_destination() == 'syslog':
+        syslog.syslog(s)
+    else:
+        print >>sys.stderr, s
 
 #
 # Exceptions.