parse the failed jobs in stream

one of the big issues today with er is the amount the there is
coupling between the bot and the classifier about knowing when
jobs are ready. The impact of this is that we are often
incorrectly determining when jobs are ready, because we have this
small set of files we test for, that aren't right for various
jobs.

This is the beginning of decoupling that. By parsing the job names
that have failed in the jenkins failure message we can move all
the readiness checking into the Stream.

This commit adds the parsing and the unit tests, though it doesn't
actually change behavior to use it yet (next patch).

Change-Id: I54ffa3495a36c2d61b1824794a672c8f5552df54

elastic_recheck/elasticRecheck.py

@@ -22,6 +22,7 @@ import urllib2
 import ConfigParser
 import logging
 import os
+import re
 import sys
 import time
 
@@ -57,7 +58,8 @@ class Stream(object):
         if thread:
             self.gerrit.startWatching()
 
-    def _is_jenkins_failure(self, event):
+    @staticmethod
+    def parse_jenkins_failure(event):
         """Is this comment a jenkins failure comment."""
         if event.get('type', '') != 'comment-added':
             return False
@@ -66,8 +68,16 @@ class Stream(object):
         if (username != 'jenkins'):
             return False
 
-        return ("Build failed.  For information on how to proceed" in
-                event['comment'])
+        if not ("Build failed.  For information on how to proceed" in
+                event['comment']):
+            return False
+
+        failed_tests = {}
+        for line in event['comment'].split("\n"):
+            m = re.search("- ([\w-]+)\s*(http://\S+)\s*:\s*FAILURE", line)
+            if m:
+                failed_tests[m.group(1)] = m.group(2)
+        return failed_tests
 
     def _failed_unit_tests(self, line):
         """Did we fail unit tests? If so not a valid failure."""
@@ -84,7 +94,11 @@ class Stream(object):
         self.log.debug("entering get_failed_tempest")
         while True:
             event = self.gerrit.getEvent()
-            if self._is_jenkins_failure(event):
+            failed_jobs = Stream.parse_jenkin_failure(event)
+            if not failed_jobs:
+                # nothing to see here, lets try the next event
+                continue
+
             self.log.debug("potential failed_tempest")
             found = False
             for line in event['comment'].split('\n'):

elastic_recheck/tests/unit/jenkins/events.json

@@ -0,0 +1,20 @@
+{
+    "events": [
+        {
+            "type": "comment-added",
+            "author": {
+                "username": "jenkins"
+            },
+            "comment":"Patch Set 1:\n\nBuild failed.  For information on how to proceed, see https://wiki.openstack.org/wiki/GerritJenkinsGit#Test_Failures\n\n- gate-requirements-pep8 http://logs.openstack.org/31/64831/1/check/gate-requirements-pep8/f5abe44 : SUCCESS in 46s\n- gate-requirements-python27 http://logs.openstack.org/31/64831/1/check/gate-requirements-python27/d09e102 : SUCCESS in 1m 51s\n- gate-requirements-pypy http://logs.openstack.org/31/64831/1/check/gate-requirements-pypy/b5c4672 : SUCCESS in 2m 14s\n- check-requirements-integration-dsvm http://logs.openstack.org/31/64831/1/check/check-requirements-integration-dsvm/135d0b4 : FAILURE in 9m 54s\n- check-tempest-dsvm-full http://logs.openstack.org/31/64831/1/check/check-tempest-dsvm-full/287c655 : FAILURE in 38m 36s\n- check-tempest-dsvm-postgres-full http://logs.openstack.org/31/64831/1/check/check-tempest-dsvm-postgres-full/91f3b16 : FAILURE in 1h 01m 15s\n- check-tempest-dsvm-neutron http://logs.openstack.org/31/64831/1/check/check-tempest-dsvm-neutron/117634b : FAILURE in 31m 20s\n- gate-tempest-dsvm-large-ops http://logs.openstack.org/31/64831/1/check/gate-tempest-dsvm-large-ops/31f47cd : SUCCESS in 14m 28s\n- gate-tempest-dsvm-neutron-large-ops http://logs.openstack.org/31/64831/1/check/gate-tempest-dsvm-neutron-large-ops/ea934a5 : SUCCESS in 15m 42s\n- check-grenade-dsvm http://logs.openstack.org/31/64831/1/check/check-grenade-dsvm/c025bc2 : SUCCESS in 31m 12s\n- check-swift-dsvm-functional http://logs.openstack.org/31/64831/1/check/check-swift-dsvm-functional/91ccf18 : SUCCESS in 12m 14s\n"
+        },
+        {
+            "type": "blah"
+        },
+        {
+            "type": "comment-added",
+            "author": {
+                "username": "sdague"
+            }
+        }
+    ]
+}

elastic_recheck/tests/unit/test_stream.py

@@ -0,0 +1,52 @@
+# Copyright 2014 Samsung Electronics. All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import json
+
+from elastic_recheck import elasticRecheck
+from elastic_recheck import tests
+
+
+class TestStream(tests.TestCase):
+
+    def setUp(self):
+        super(TestStream, self).setUp()
+        with open("elastic_recheck/tests/unit/jenkins/events.json") as f:
+            j = json.load(f)
+            self.events = j['events']
+
+    def test_gerrit_parsing_none(self):
+        self.assertFalse(
+            elasticRecheck.Stream.parse_jenkins_failure(self.events[1]))
+        self.assertFalse(
+            elasticRecheck.Stream.parse_jenkins_failure(self.events[2]))
+
+    def test_gerrit_parsing(self):
+        jobs = elasticRecheck.Stream.parse_jenkins_failure(self.events[0])
+        self.assertIn('check-requirements-integration-dsvm', jobs)
+        self.assertIn('check-tempest-dsvm-full', jobs)
+        self.assertIn('check-tempest-dsvm-postgres-full', jobs)
+        self.assertIn('check-tempest-dsvm-neutron', jobs)
+
+        self.assertEqual(jobs['check-requirements-integration-dsvm'],
+                         "http://logs.openstack.org/31/64831/1/check/"
+                         "check-requirements-integration-dsvm/135d0b4")
+
+        self.assertNotIn('gate-requirements-pep8', jobs)
+        self.assertNotIn('gate-requirements-python27', jobs)
+        self.assertNotIn('gate-requirements-pypy', jobs)
+        self.assertNotIn('gate-tempest-dsvm-large-ops', jobs)
+        self.assertNotIn('gate-tempest-dsvm-neutron-large-ops', jobs)
+        self.assertNotIn('check-grenade-dsvm', jobs)
+        self.assertNotIn('check-swift-dsvm-functional', jobs)