Various additions to make sure timed out and failed hosts are taken out of the playbook even if failed

during setup, async tasks, or poll operations.  This introduced some redundancy so I've made some
notes in the code where things need to be refactored to remove them.

bin/ansible-playbook

@@ -60,6 +60,9 @@ class PlaybookCallbacks(object):
     def on_async_poll(self, jid, host, clock, host_result):
         print async_poll_status(jid, host, clock, host_result)
 
+    def on_dark_host(self, host, msg):
+        print "exception: [%s] => %s" % (host, msg)
+
 
 def main(args):
     ''' run ansible-playbook operations '''

lib/ansible/playbook.py

@@ -202,6 +202,17 @@ class PlayBook(object):
         runner.background = async_seconds
         results = runner.run()
 
+        # TODO -- this block is repeated in lots of places, refactor
+        dark_hosts = results.get('dark',{})
+        contacted_hosts = results.get('contacted',{})
+        for (host, error) in dark_hosts.iteritems():
+            self.callbacks.on_dark_host(host, error)
+            self.dark[host] = 1
+        for (host, host_result) in contacted_hosts.iteritems():
+            if 'failed' in host_result:
+                self.callbacks.on_failed(host, host_result)
+                self.failures[host] = 1
+
         if async_poll_interval <= 0:
             # if not polling, playbook requested fire and forget
             # trust the user wanted that and return immediately
@@ -221,6 +232,8 @@ class PlayBook(object):
 
         clock = async_seconds
         runner.hosts = self.hosts_to_poll(results)
+        runner.hosts = self._prune_failed_hosts(runner.hosts)
+
         poll_results = results
         while (clock >= 0):
             runner.hosts = poll_hosts
@@ -234,20 +247,33 @@ class PlayBook(object):
             runner.pattern     = '*'
             runner.hosts       = self.hosts_to_poll(poll_results)
             poll_results       = runner.run()
+
             if len(runner.hosts) == 0:
                 break
             if poll_results is None:
                 break
+
+            # TODO -- this block is repeated in lots of places, refactor
+            dark_hosts = poll_results.get('dark',{})
+            contacted_hosts = poll_results.get('contacted',{})
+            for (host, error) in dark_hosts.iteritems():
+                self.callbacks.on_dark_host(host, error)
+                self.dark[host] = 1
+            for (host, host_result) in contacted_hosts.iteritems():
+                if 'failed' in host_result:
+                    self.callbacks.on_failed(host, host_result)
+                    self.failures[host] = 1
+
             for (host, host_result) in poll_results['contacted'].iteritems():
-                # override last result with current status result for report
                 results['contacted'][host] = host_result
+                if not host in self.dark and not host in self.failures:
+                    # override last result with current status result for report
                     # output if requested
                     self.callbacks.on_async_poll(jid, host, clock, host_result)
             # run down the clock
             clock = clock - async_poll_interval
             time.sleep(async_poll_interval)
             # do not have to poll the completed hosts, smaller list
-                runner.hosts       = self.hosts_to_poll(poll_results)
             # mark any hosts that are still listed as started as failed
             # since these likely got killed by async_wrapper
             for (host, host_result) in results['contacted'].iteritems():
@@ -274,9 +300,16 @@ class PlayBook(object):
         )
 
         if async_seconds == 0:
-            return runner.run()
+            rc = runner.run()
         else:
-            return self._async_poll(runner, async_seconds, async_poll_interval)
+            rc = self._async_poll(runner, async_seconds, async_poll_interval)
+ 
+        dark_hosts = rc.get('dark',{})
+        for (host, error) in dark_hosts.iteritems():
+            self.callbacks.on_dark_host(host, error)
+
+        return rc
+
 
     def _run_task(self, pattern=None, task=None, host_list=None,
         remote_user=None, handlers=None, conditional=False):
@@ -429,6 +462,17 @@ class PlayBook(object):
             setup_cache=SETUP_CACHE
         ).run()
 
+        # FIXME: similar logic up in run_task, refactor
+        dark_hosts = setup_results.get('dark',{})
+        contacted_hosts = setup_results.get('contacted',{})
+        for (host, error) in dark_hosts.iteritems():
+            self.callbacks.on_dark_host(host, error)
+            self.dark[host] = 1
+        for (host, host_result) in contacted_hosts.iteritems():
+            if 'failed' in host_result:
+                self.callbacks.on_failed(host, host_result)
+                self.failed[hosts] = 1
+
         # now for each result, load into the setup cache so we can
         # let runner template out future commands
         setup_ok = setup_results.get('contacted', {})