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[feature] Add healthcheck endpoints /livez and /readyz (#2783)

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* [feature] Add healthcheck endpoints `/livez` and `/readyz`

* use select that returns no data
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tobi 2024-03-25 18:05:14 +01:00 • committed by GitHub
commit b7b42e832a
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11 changed files with 328 additions and 4 deletions
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4
internal/db/basic.go
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@ -33,8 +33,8 @@ type Basic interface {
// If the database implementation doesn't need to be stopped, this can just return nil.
Close() error
// IsHealthy should return nil if the database connection is healthy, or an error if not.
IsHealthy(ctx context.Context) error
// Ready returns nil if the database connection is ready, or an error if not.
Ready(ctx context.Context) error
// GetByID gets one entry by its id. In a database like postgres, this might be the 'id' field of the entry,
// for other implementations (for example, in-memory) it might just be the key of a map.

10
internal/db/bundb/basic.go
View file

@ -124,8 +124,14 @@ func (b *basicDB) DropTable(ctx context.Context, i interface{}) error {
return err
}
func (b *basicDB) IsHealthy(ctx context.Context) error {
return b.db.PingContext(ctx)
func (b *basicDB) Ready(ctx context.Context) error {
if _, err := b.db.
NewRaw("SELECT NULL FROM ? LIMIT 0", bun.Ident("instances")).
Exec(ctx); err != nil {
return err
}
return nil
}
func (b *basicDB) Close() error {