apiVersion: v1
kind: ConfigMap
metadata:
  name: dlob-redis-retention
data:
  clean.sh: |
    #!/bin/sh
    set -eu
    now_s="$(date +%s)"

    for pattern in 'dlob-hot:*' 'dlob-all:*'; do
      max_age_s=900
      if [ "$pattern" = 'dlob-all:*' ]; then
        max_age_s=3600
      fi

      for key in $(redis-cli -h dlob-redis --scan --pattern "$pattern"); do
        value="$(redis-cli -h dlob-redis --raw get "$key" || true)"
        ts="$(printf '%s' "$value" | sed -n 's/.*"ts":\([0-9][0-9]*\).*/\1/p')"
        if [ -z "$ts" ]; then
          ts="$(printf '%s' "$value" | sed -n 's/.*"updatedAtTs":\([0-9][0-9]*\).*/\1/p')"
        fi
        [ -n "$ts" ] || continue
        if [ $((now_s - ts / 1000)) -gt "$max_age_s" ]; then
          redis-cli -h dlob-redis del "$key" >/dev/null
        fi
      done
    done
---
apiVersion: batch/v1
kind: CronJob
metadata:
  name: dlob-redis-retention
spec:
  schedule: "*/5 * * * *"
  successfulJobsHistoryLimit: 1
  failedJobsHistoryLimit: 1
  jobTemplate:
    spec:
      template:
        spec:
          restartPolicy: OnFailure
          containers:
            - name: cleaner
              image: redis:7-alpine
              command:
                - /bin/sh
                - /scripts/clean.sh
              resources:
                requests:
                  cpu: 10m
                  memory: 32Mi
                limits:
                  cpu: 100m
                  memory: 128Mi
              volumeMounts:
                - name: script
                  mountPath: /scripts
          volumes:
            - name: script
              configMap:
                name: dlob-redis-retention
                defaultMode: 365