expose on channel when we timeout on logs

we have been timing out on logs a lot, and not noticing. Redo this
logic to be exception based so we can tell the IRC channel when we
timeout on logs, to get to the bottom of reliability issues with
indexing logstash data.

Change-Id: Ia63d801235c6959eb7b97c334291a6d2f06411b6

elastic_recheck/bot.py

@@ -125,9 +125,15 @@ class RecheckWatch(threading.Thread):
         LOG.info('Compiled Message %s: %s' % (channel, msg))
         self.ircbot.send(channel, msg)
 
-    def _read(self, data):
+    def print_msg(self, channel, msg):
+        self.ircbot.send(channel, msg)
+
+    def _read(self, data={}, msg=""):
         for channel in self.channel_config.channels:
-            if data.get('bug_numbers'):
+            if msg:
+                if channel in self.channel_config.events['negative']:
+                    self.print_msg(channel, msg)
+            elif data.get('bug_numbers'):
                 if channel in self.channel_config.events['positive']:
                     self.error_found(channel, data)
             else:
@@ -140,20 +146,24 @@ class RecheckWatch(threading.Thread):
         classifier = er.Classifier(self.queries)
         stream = er.Stream(self.username, self.host, self.key)
         while True:
-            event = stream.get_failed_tempest()
-            change = event['change']['number']
-            rev = event['patchSet']['number']
-            change_id = "%s,%s" % (change, rev)
-            project = event['change']['project']
             try:
+                event = stream.get_failed_tempest()
+                change = event['change']['number']
+                rev = event['patchSet']['number']
+                change_id = "%s,%s" % (change, rev)
+                project = event['change']['project']
+
                 bug_numbers = classifier.classify(change, rev)
                 if not bug_numbers:
                     self._read(event)
                 else:
                     event['bug_numbers'] = bug_numbers
-                    self._read(event)
+                    self._read(data=event)
                     if self.commenting:
                         stream.leave_comment(project, change_id, bug_numbers)
+            except er.ResultTimedOut as e:
+                LOG.warn(e.msg)
+                self._read(msg=e.msg)
             except Exception:
                 LOG.exception("Uncaught exception processing event.")
 

elastic_recheck/elasticRecheck.py

@@ -48,8 +48,19 @@ def required_files(job):
     return files
 
 
-class ResultNotReady(Exception):
-    pass
+class ConsoleNotReady(Exception):
+    def __init__(self, msg):
+        self.msg = msg
+
+
+class FilesNotReady(Exception):
+    def __init__(self, msg):
+        self.msg = msg
+
+
+class ResultTimedOut(Exception):
+    def __init__(self, msg):
+        self.msg = msg
 
 
 class Stream(object):
@@ -95,7 +106,9 @@ class Stream(object):
         query = qb.result_ready(change, patch, name)
         r = self.es.search(query, size='10')
         if len(r) == 0:
-            raise ResultNotReady()
+            msg = ("Console logs not ready for %s %s,%s" %
+                   (name, change, patch))
+            raise ConsoleNotReady(msg)
         else:
             LOG.debug("Console ready for %s %s,%s" %
                       (name, change, patch))
@@ -107,7 +120,9 @@ class Stream(object):
         required = required_files(name)
         missing_files = [x for x in required if x not in files]
         if len(missing_files) != 0:
-            raise ResultNotReady()
+            msg = ("%s missing for %s %s,%s" % (
+                change, patch, name, missing_files))
+            raise FilesNotReady(msg)
 
     def _is_openstack_project(self, event):
         return "tempest-dsvm-full" in event["comment"]
@@ -126,9 +141,8 @@ class Stream(object):
                         change_number, patch_number, job_name)
                 break
 
-            except ResultNotReady:
-                LOG.debug("Console logs not ready for %s %s,%s" %
-                          (job_name, change_number, patch_number))
+            except ConsoleNotReady as e:
+                LOG.debug(e.msg)
                 time.sleep(SLEEP_TIME)
                 continue
             except pyelasticsearch.exceptions.InvalidJsonResponseError:
@@ -142,9 +156,9 @@ class Stream(object):
 
         if i == NUMBER_OF_RETRIES - 1:
             elapsed = datetime.datetime.now() - started_at
-            LOG.warn("Console logs not available after %ss for %s %s,%s" %
-                     (elapsed, job_name, change_number, patch_number))
-            return False
+            msg = ("Console logs not available after %ss for %s %s,%s" %
+                   (elapsed, job_name, change_number, patch_number))
+            raise ResultTimedOut(msg)
 
         LOG.debug(
             "Found hits for change_number: %s, patch_number: %s"
@@ -160,14 +174,14 @@ class Stream(object):
                     % (change_number, patch_number))
                 time.sleep(10)
                 return True
-            except ResultNotReady:
+            except FilesNotReady:
                 time.sleep(SLEEP_TIME)
 
         # if we get to the end, we're broken
         elapsed = datetime.datetime.now() - started_at
-        LOG.warn("Required files not ready after %ss for %s %d,%d" %
-                 (elapsed, job_name, change_number, patch_number))
-        return False
+        msg = ("Required files not ready after %ss for %s %d,%d" %
+               (elapsed, job_name, change_number, patch_number))
+        raise ResultTimedOut(msg)
 
     def get_failed_tempest(self):
         LOG.debug("entering get_failed_tempest")