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Add request_duration_seconds metric #72

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mrngm merged 3 commits from metrics into master 2021-05-16 21:10:49 +02:00
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1 changed files with 16 additions and 13 deletions
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metrics.go
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@ -87,19 +87,22 @@ func (mh *MetricsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
func (mh *MetricsHandler) updateMetrics() {
// Update metricURLsTotalGauge
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mrngm commented 2021-05-16 14:31:00 +02:00
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Is it possible to query the database once, yielding all counts for all types and states?

Is it possible to query the database once, yielding all counts for all types and states?
electricdusk commented 2021-05-16 17:34:59 +02:00
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I tried to find this, but thought it was not not possible. I have retried searching for this and found this: https://stackoverflow.com/a/19046871/5207081
That would fix this.

I tried to find this, but thought it was not not possible. I have retried searching for this and found this: https://stackoverflow.com/a/19046871/5207081 That would fix this.
mrngm commented 2021-05-16 18:29:02 +02:00
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Ran this query on the test migration database:

sqlite> SELECT type, state, COUNT(*) FROM pastes GROUP BY type, state;
0|2|136  // type: undef      state: deleted
2|1|118  // type: redirect   state: present
3|1|1376 // type: fileupload state: present

Would that roughly be what you expect to get here?

Ran this query on the test migration database: ``` sqlite> SELECT type, state, COUNT(*) FROM pastes GROUP BY type, state; 0|2|136 // type: undef state: deleted 2|1|118 // type: redirect state: present 3|1|1376 // type: fileupload state: present ``` Would that roughly be what you expect to get here?
for state := db.PasteStateUndef; state <= db.PasteStateDeleted; state++ {
for ty := db.PasteTypeUndef; ty <= db.PasteTypeFileUpload; ty++ {
var count int64
query := mh.db.Unscoped().Model(&db.Paste{}).Where("type = ? AND state = ?", ty, state).Count(&count)
if err := query.Error; err != nil {
log.Printf("error: %v", errors.Wrap(err, "fetching pastes_total metric"))
return
}
labels := map[string]string{
"state": state.String(),
"type": ty.String(),
}
metricURLsTotalGauge.With(labels).Set(float64(count))
results := make([](struct {
Type db.PasteType
State db.PasteState
Count float64
}), 0)
query := mh.db.Unscoped().Model(&db.Paste{}).Select("type", "state", "COUNT(*) as count").Group("type, state").Find(&results)
if err := query.Error; err != nil {
log.Printf("error: %v", errors.Wrap(err, "fetching pastes_total metric"))
return
}
metricURLsTotalGauge.Reset()
for _, r := range results {
labels := map[string]string{
"type": r.Type.String(),
"state": r.State.String(),
}
metricURLsTotalGauge.With(labels).Set(r.Count)
}
}