Make the prometheus query configurable

.gitignore

@@ -0,0 +1,2 @@
+config.cfg
+__pycache__

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 clerie
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -2,6 +2,10 @@
 
 Simple status page for server uptime.
 
+![screenshot](screenshot.png)
+
+Displays the up indicator of node-exporter from your prometheus for the last 14 days in 6h steps.
+
 ## Deployment
 Init codebase
 ```
@@ -15,6 +19,7 @@ Create `config.cfg` with the following contents and edit values for your needs:
 
 ```
 PROMETHEUS_API_BASE="http://[::1]:9090"
+PROMETHEUS_QUERY='(sum_over_time(up{job="node-exporter"}[6h]) / count_over_time(up{job="node-exporter"}[6h]))[14d:6h]'
 ```
 
 Starten und updaten lässt sich die Flask-App folgendermaßen:

uptimestatus/__init__.py

@@ -6,6 +6,7 @@ import os
 app = Flask(__name__)
 
 app.config["PROMETHEUS_API_BASE"] = "http://[::1]:9090"
+app.config["PROMETHEUS_QUERY"] = '(sum_over_time(up{job="node-exporter"}[6h]) / count_over_time(up{job="node-exporter"}[6h]))[14d:6h]'
 
 if "UPTIMESTATUS_SETTINGS" in os.environ:
     app.config.from_envvar('UPTIMESTATUS_SETTINGS')

uptimestatus/templates/status.html

@@ -26,7 +26,7 @@
       {% endfor %}
     </section>
     <footer class="container">
-      <center>Uptime Status</center>
+      <center><a href="https://git.clerie.de/clerie/uptime-status">Uptime Status</a> by <a href="https://clerie.de">clerie</a></center>
     </footer>
   </body>
 </html>

uptimestatus/views.py

@@ -6,10 +6,11 @@ from .utils import process_instance
 from flask import render_template
 import json
 import requests
+import urllib.parse
 
 @app.route("/")
 def status():
-    r = requests.get(app.config["PROMETHEUS_API_BASE"] + "/api/v1/query?query=%28sum_over_time%28up%7Bjob%3D%22node-exporter%22%7D%5B6h%5D%29+%2F+count_over_time%28up%7Bjob%3D%22node-exporter%22%7D%5B6h%5D%29%29%5B14d%3A6h%5D")
+    r = requests.get(app.config["PROMETHEUS_API_BASE"] + "/api/v1/query?" + urllib.parse.urlencode({'query': app.config["PROMETHEUS_QUERY"]}))
     j = json.loads(r.text)
     metrics = sorted(map(process_instance, j["data"]["result"]), key=lambda m: m["name"])
     return render_template("status.html", metrics=metrics)