Created
May 3, 2020 17:51
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Pushgateway powered reminders!
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| <!DOCTYPE html> | |
| <script> | |
| const PUSHGATEWAY = 'http://pushgateway:9091'; | |
| class Pushgateway { | |
| constructor(baseUrl, instanceLabels) { | |
| this.baseUrl = baseUrl; | |
| this.instanceLabels = instanceLabels; | |
| } | |
| async push(metrics) { | |
| let url = this.baseUrl + "/metrics/" + | |
| Object.keys(this.instanceLabels).map(k => k + "/" + | |
| encodeURIComponent(this.instanceLabels[k])).join("/"); | |
| return await fetch(url, { | |
| mode: "no-cors", | |
| method: "POST", | |
| headers: { | |
| "Content-Type": "text/plain", | |
| }, | |
| body: Object.keys(metrics).map( | |
| k => k + " " + metrics[k]).join("\n") + "\n", | |
| }); | |
| } | |
| } | |
| let pg = new Pushgateway(PUSHGATEWAY, { | |
| job: "reminder", | |
| for: "Walk the dog", | |
| }); | |
| </script> | |
| <button onclick="pg.push({reminder_in_seconds: 6*3600})">Add reminder to walk the dog in 6 hours</button> |
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| # Prometheus alert rule: | |
| groups: | |
| - name: reminder | |
| rules: | |
| - alert: TimeTo | |
| expr: | | |
| time() > push_time_seconds{job="reminder"} | |
| + reminder_in_seconds{job="reminder"} | |
| labels: | |
| severity: reminder | |
| annotations: | |
| summary: "{{ $labels.for }}" |
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