qa/tasks/mgr: add test_prometheus; smoke tests for prometheus module

Signed-off-by: Jan Fajerski <jfajerski@suse.com>

diff --git a/qa/tasks/mgr/test_prometheus.py b/qa/tasks/mgr/test_prometheus.py
new file mode 100644 (file)
index 0000000..8ca18a1
--- /dev/null
+++ b/qa/tasks/mgr/test_prometheus.py
@@ -0,0 +1,65 @@
+
+
+from mgr_test_case import MgrTestCase
+
+import logging
+import requests
+
+
+log = logging.getLogger(__name__)
+
+
+class TestPrometheus(MgrTestCase):
+    MGRS_REQUIRED = 3
+
+    def test_standby(self):
+        self._assign_ports("prometheus", "server_port")
+        self._load_module("prometheus")
+
+        original_active = self.mgr_cluster.get_active_id()
+
+        original_uri = self._get_uri("prometheus")
+        log.info("Originally running at {0}".format(original_uri))
+
+        self.mgr_cluster.mgr_fail(original_active)
+
+        failed_over_uri = self._get_uri("prometheus")
+        log.info("After failover running at {0}".format(failed_over_uri))
+
+        self.assertNotEqual(original_uri, failed_over_uri)
+
+        # The original active daemon should have come back up as a standby
+        # and serve some html under "/" and an empty answer under /metrics
+        r = requests.get(original_uri, allow_redirects=False)
+        self.assertEqual(r.status_code, 200)
+        r = requests.get(original_uri + "metrics", allow_redirects=False)
+        self.assertEqual(r.status_code, 200)
+        self.assertEqual(r.headers["content-type"], "text/plain;charset=utf-8")
+
+    def test_urls(self):
+        self._assign_ports("prometheus", "server_port")
+        self._load_module("prometheus")
+
+        base_uri = self._get_uri("prometheus")
+
+        # This is a very simple smoke test to check that the module can
+        # give us a 200 response to requests.  We're not testing that
+        # the content is correct or even renders!
+
+        urls = [
+            "/",
+            "/metrics"
+        ]
+
+        failures = []
+
+        for url in urls:
+            r = requests.get(base_uri + url, allow_redirects=False)
+            if r.status_code != 200:
+                failures.append(url)
+
+            log.info("{0}: {1} ({2} bytes)".format(
+                url, r.status_code, len(r.content)
+            ))
+
+        self.assertListEqual(failures, [])