Make the prometheus query configurable

.gitignore

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

LICENSE

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+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

@@ -1,3 +1,33 @@
 # Uptime Status
 
 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
+```
+git clone https://github.com/clerie/uptime-status.git
+cd uptime-status/
+virtualenv -p python3 ENV
+cd ..
+```
+
+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:
+```
+cd uptime-status/
+git pull
+source ENV/bin/activate
+pip install -r requirements.txt
+UPTIMESTATUS_SETTINGS=/path/to/config.cfg gunicorn uptimestatus:app
+deactivate
+```

app.py

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+#!/usr/bin/env python3
+
+from uptimestatus import app
+
+if __name__ == "__main__":
+    app.run(debug=True)

uptime-status.py

@@ -1,31 +0,0 @@
-#!/usr/bin/env python3
-
-from flask import Flask, render_template
-import json
-import requests
-
-app = Flask(__name__)
-
-def ratio_to_status(ratio):
-    if ratio > 0.99:
-        return "ok"
-    elif ratio > 0.8:
-        return "warning"
-    else:
-        return "critical"
-
-def process_instance(instance):
-    return {
-        "name": instance["metric"]["instance"].split(".")[0],
-        "i": [{"status": "unknown", "ratio": None} for i in range(56 - len(instance["values"]))] + [{"status": ratio_to_status(float(i[1])), "ratio": float(i[1])} for i in instance["values"]],
-    }
-
-@app.route("/")
-def status():
-    r = requests.get("https://prometheus.monitoring.clerie.de/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")
-    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)
-
-if __name__ == "__main__":
-    app.run()

uptimestatus/__init__.py

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+#!/usr/bin/env python3
+
+from flask import Flask
+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')
+
+from .views import app

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/utils.py

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+#!/usr/bin/env python3
+
+def ratio_to_status(ratio):
+    if ratio > 0.99:
+        return "ok"
+    elif ratio > 0.8:
+        return "warning"
+    else:
+        return "critical"
+
+def process_instance(instance):
+    return {
+        "name": instance["metric"]["instance"].split(".")[0],
+        "i": [{"status": "unknown", "ratio": None} for i in range(56 - len(instance["values"]))] + [{"status": ratio_to_status(float(i[1])), "ratio": float(i[1])} for i in instance["values"]],
+    }

uptimestatus/views.py

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+#!/usr/bin/env python3
+
+from . import app
+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?" + 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)