From 4b311a128099559e3db558ca77308fc6724acfd6 Mon Sep 17 00:00:00 2001
From: Narayan Desai <desai@mcs.anl.gov>
Date: Sat, 22 Mar 2008 20:28:41 +0000
Subject: Implement filesystem event debugging in bcfg2-info (new command
 event_debug)

git-svn-id: https://svn.mcs.anl.gov/repos/bcfg/trunk/bcfg2@4440 ce84e21b-d406-0410-9b95-82705330c041
---
 src/lib/Server/Core.py | 35 +++++++++++++++++++++++------------
 src/sbin/bcfg2-info    |  4 ++++
 2 files changed, 27 insertions(+), 12 deletions(-)

diff --git a/src/lib/Server/Core.py b/src/lib/Server/Core.py
index a0be13313..525cd231d 100644
--- a/src/lib/Server/Core.py
+++ b/src/lib/Server/Core.py
@@ -38,6 +38,7 @@ class FamFam(object):
         self.fm = _fam.open()
         self.users = {}
         self.handles = {}
+        self.debug = False
 
     def fileno(self):
         '''return fam file handle number'''
@@ -60,12 +61,16 @@ class FamFam(object):
         '''Route a fam event to the proper callback'''
         event = self.fm.nextEvent()
         reqid = event.requestID
-        if self.users.has_key(reqid):
-            #print "dispatching event %s %s to obj %s handle :%s:" % (event.code2str(), event.filename, self.users[reqid], event.requestID)
-            try:
-                self.users[reqid].HandleEvent(event)
-            except:
-                logger.error("handling event for file %s" % (event.filename), exc_info=1)
+        if reqid not in self.users:
+            return
+        if self.debug:
+            logger.info("Dispatching event %s %s to obj %s handle" % \
+                        (event.code2str(), event.filename,
+                         self.users[reqid]))
+        try:
+            self.users[reqid].HandleEvent(event)
+        except:
+            logger.error("handling event for file %s" % (event.filename), exc_info=1)
 
     def Service(self):
         '''Handle all fam work'''
@@ -127,6 +132,7 @@ class GaminFam(object):
         self.handles = {}
         self.counter = 0
         self.events = []
+        self.debug = False
 
     def fileno(self):
         '''return fam file handle number'''
@@ -177,14 +183,19 @@ class GaminFam(object):
                     collapsed += 1
         self.events = []
         for event in unique:
-            if self.handles.has_key(event.requestID):
-                try:
-                    self.handles[event.requestID].HandleEvent(event)
-                except:
-                    logger.error("error in handling of gamin event for %s" % (event.filename), exc_info=1)
-            else:
+            if event.requestID not in self.handles:
                 logger.info("Got event for unexpected id %s, file %s" %
                             (event.requestID, event.filename))
+                continue
+            if self.debug:
+                logger.info("Dispatching event %s %s to obj %s" \
+                            % (event.code2str(), event.filename,
+                               self.handles[event.requestID]))
+            try:
+                self.handles[event.requestID].HandleEvent(event)
+            except:
+                logger.error("error in handling of gamin event for %s" % \
+                             (event.filename), exc_info=1)
         end = time()
         logger.info("Processed %s gamin events in %03.03f seconds. %s collapsed" %
                     (count, (end - start), collapsed))
diff --git a/src/sbin/bcfg2-info b/src/sbin/bcfg2-info
index 8e13894d2..9016a7fed 100755
--- a/src/sbin/bcfg2-info
+++ b/src/sbin/bcfg2-info
@@ -73,6 +73,7 @@ Usage: [quit|exit]"""
         print 'bundles - print out group/bundle information'
         print 'clients - print out client/profile information'
         print 'debug - shell out to native python interpreter'
+        print 'event_debug - display filesystem events as they are processed'
         print 'generators - list current versions of generators'
         print 'groups - list groups'
         print 'help - print this text'
@@ -258,6 +259,9 @@ Usage: [quit|exit]"""
                     data.append((generator.__name__, etype, name))
         printTabular(data)
 
+    def do_event_debug(self, args):
+        self.fam.debug = True
+
 if __name__ == '__main__':
     Bcfg2.Logging.setup_logging('bcfg2-info', to_syslog=False)
     optinfo = {
-- 
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