torjus/oubliette
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feat: add Prometheus metrics for Store queries

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Add InstrumentedStore decorator that wraps any Store and records
per-method query duration histograms and error counters. Wired into
main.go so all storage consumers get automatic observability.

Bump version to 0.18.0.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Torjus Håkestad
2026-03-07 22:29:51 +01:00
parent c74313c195
commit 664e79fce6
5 changed files with 401 additions and 7 deletions
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13
cmd/oubliette/main.go
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@@ -20,7 +20,7 @@ import (
"git.t-juice.club/torjus/oubliette/internal/web"
)
const Version = "0.17.1"
const Version = "0.18.0"
func main() {
if err := run(); err != nil {
@@ -76,12 +76,13 @@ func run() error {
ctx, cancel := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
defer cancel()
go storage.RunRetention(ctx, store, cfg.Storage.RetentionDays, cfg.Storage.RetentionIntervalDuration, logger)
m := metrics.New(Version)
m.RegisterStoreCollector(store)
instrumentedStore := storage.NewInstrumentedStore(store, m.StorageQueryDuration, m.StorageQueryErrors)
m.RegisterStoreCollector(instrumentedStore)
srv, err := server.New(*cfg, store, logger, m)
go storage.RunRetention(ctx, instrumentedStore, cfg.Storage.RetentionDays, cfg.Storage.RetentionIntervalDuration, logger)
srv, err := server.New(*cfg, instrumentedStore, logger, m)
if err != nil {
return fmt.Errorf("create server: %w", err)
}
@@ -95,7 +96,7 @@ func run() error {
metricsHandler = m.Handler()
}
webHandler, err := web.NewServer(store, logger.With("component", "web"), metricsHandler, cfg.Web.MetricsToken)
webHandler, err := web.NewServer(instrumentedStore, logger.With("component", "web"), metricsHandler, cfg.Web.MetricsToken)
if err != nil {
return fmt.Errorf("create web server: %w", err)
}