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fix: consumption metrics on restart (#5323)

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Write collected metrics to disk to recover previously sent metrics on
restart.

Recover the previously collected metrics during startup, send them over
at right time
  - send cached synthetic size before actual is calculated
  - when `last_record_lsn` rolls back on startup
      - stay at last sent `written_size` metric
      - send `written_size_delta_bytes` metric as 0

Add test support: stateful verification of events in python tests.

Fixes: #5206
Cc: #5175 (loggings, will be enhanced in follow-up)
This commit is contained in:
Joonas Koivunen
2023-09-16 11:24:42 +03:00
committed by GitHub
parent a7f4ee02a3
commit f902777202
5 changed files with 757 additions and 189 deletions
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2
libs/consumption_metrics/src/lib.rs
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@@ -5,7 +5,7 @@ use chrono::{DateTime, Utc};
use rand::Rng;
use serde::Serialize;
#[derive(Serialize, Debug, Clone, Copy, Eq, PartialEq, Ord, PartialOrd)]
#[derive(Serialize, serde::Deserialize, Debug, Clone, Copy, Eq, PartialEq, Ord, PartialOrd)]
#[serde(tag = "type")]
pub enum EventType {
#[serde(rename = "absolute")]