mirror of
https://github.com/grafana/grafana.git
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b476ae62fb
Prior to this change, all alert instance writes and deletes happened
individually, in their own database transaction. This change batches up
writes or deletes for a given rule's evaluation loop into a single
transaction before applying it.
These new transactions are off by default, guarded by the feature toggle "alertingBigTransactions"
Before:
```
goos: darwin
goarch: arm64
pkg: github.com/grafana/grafana/pkg/services/ngalert/store
BenchmarkAlertInstanceOperations-8 398 2991381 ns/op 1133537 B/op 27703 allocs/op
--- BENCH: BenchmarkAlertInstanceOperations-8
util.go:127: alert definition: {orgID: 1, UID: FovKXiRVzm} with title: "an alert definition FTvFXmRVkz" interval: 60 created
util.go:127: alert definition: {orgID: 1, UID: foDFXmRVkm} with title: "an alert definition fovFXmRVkz" interval: 60 created
util.go:127: alert definition: {orgID: 1, UID: VQvFuigVkm} with title: "an alert definition VwDKXmR4kz" interval: 60 created
PASS
ok github.com/grafana/grafana/pkg/services/ngalert/store 1.619s
```
After:
```
goos: darwin
goarch: arm64
pkg: github.com/grafana/grafana/pkg/services/ngalert/store
BenchmarkAlertInstanceOperations-8 1440 816484 ns/op 352297 B/op 6529 allocs/op
--- BENCH: BenchmarkAlertInstanceOperations-8
util.go:127: alert definition: {orgID: 1, UID: 302r_igVzm} with title: "an alert definition q0h9lmR4zz" interval: 60 created
util.go:127: alert definition: {orgID: 1, UID: 71hrlmR4km} with title: "an alert definition nJ29_mR4zz" interval: 60 created
util.go:127: alert definition: {orgID: 1, UID: Cahr_mR4zm} with title: "an alert definition ja2rlmg4zz" interval: 60 created
PASS
ok github.com/grafana/grafana/pkg/services/ngalert/store 1.383s
```
So we cut time by about 75% and memory allocations by about 60% when
storing and deleting 100 instances.
29 lines
1.0 KiB
Go
29 lines
1.0 KiB
Go
package state
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import (
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"context"
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"time"
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"github.com/grafana/grafana-plugin-sdk-go/data"
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"github.com/grafana/grafana/pkg/services/ngalert/models"
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)
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// InstanceStore represents the ability to fetch and write alert instances.
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type InstanceStore interface {
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FetchOrgIds(ctx context.Context) ([]int64, error)
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ListAlertInstances(ctx context.Context, cmd *models.ListAlertInstancesQuery) error
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SaveAlertInstances(ctx context.Context, cmd ...models.AlertInstance) error
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DeleteAlertInstances(ctx context.Context, keys ...models.AlertInstanceKey) error
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DeleteAlertInstancesByRule(ctx context.Context, key models.AlertRuleKey) error
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}
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// RuleReader represents the ability to fetch alert rules.
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type RuleReader interface {
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ListAlertRules(ctx context.Context, query *models.ListAlertRulesQuery) error
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}
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// Historian maintains an audit log of alert state history.
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type Historian interface {
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RecordState(ctx context.Context, rule *models.AlertRule, labels data.Labels, evaluatedAt time.Time, currentData, previousData InstanceStateAndReason)
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}
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