Merge lp:~tcuthbert/mojo/mojo-specs into lp:mojo/mojo-specs

[Thomas Cuthbert]

Initial commit for testing the prometheus charm. See:
https://jenkins.canonical.com/is-mojo-ci/job/live-is-charm-testing-prometheus-xenial/15/console

[Haw Loeung (hloeung)]

LGTM, +1

review: Approve

[lp:~tcuthbert/mojo/mojo-specs]

63. By Haw Loeung on 2018-01-23

[tcuthbert] charm-testing: Initial commit of prometheus charm testing

=== added directory 'charm-testing/prometheus'
=== added file 'charm-testing/prometheus/collect'
--- charm-testing/prometheus/collect	1970-01-01 00:00:00 +0000
+++ charm-testing/prometheus/collect	2018-01-23 00:08:31 +0000
@@ -0,0 +1,5 @@
+# Services, primary charms
+prometheus              cs:prometheus
+
+# subordinates
+nrpe                    cs:nrpe

=== added file 'charm-testing/prometheus/deploy'
--- charm-testing/prometheus/deploy	1970-01-01 00:00:00 +0000
+++ charm-testing/prometheus/deploy	2018-01-23 00:08:31 +0000
@@ -0,0 +1,16 @@
+prometheus:
+    series: {{series}}
+    services:
+        prometheus:
+            charm: prometheus
+            expose: true
+            options:
+                prometheus_registration_authtoken: "testing"
+                external_url: "http://prometheus.testing.local/"
+        nrpe:
+            charm: nrpe
+            {% if series == "xenial" %}options:
+                swap: '-w 90% -c 75% -n OK'{% endif %}
+
+    relations:
+        - ["prometheus:nrpe-external-master", "nrpe:nrpe-external-master"]

=== added file 'charm-testing/prometheus/post-deploy'
--- charm-testing/prometheus/post-deploy	1970-01-01 00:00:00 +0000
+++ charm-testing/prometheus/post-deploy	2018-01-23 00:08:31 +0000
@@ -0,0 +1,26 @@
+#!/bin/bash
+
+PROMETHEUS=$(juju status --format=yaml prometheus 2>&1 | sed -nr '/^ {8}public-address/s/.*://p')
+
+if [ -z "${PROMETHEUS}" ]; then
+    echo "No prometheus instances"
+    exit 1
+fi
+
+for UNIT in ${PROMETHEUS}; do
+
+    echo "Calling unit to ensure it returns: 'up' metrics"
+    echo 'curl -f -s -S -v http://${UNIT}:9090/api/v1/query?query=up'
+    curl -f -s -S -v http://${UNIT}:9090/api/v1/query?query=up
+    if [ $? -ne 0 ]; then
+        echo "####################"
+        echo "# E2E Check Failed #"
+        echo "####################"
+        exit 1
+    fi
+done
+
+# If we are here it means no checks failed
+echo "####################"
+echo "# E2E Check Passed #"
+echo "####################"