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Emit JSON logs for logs-ingester compatibility #185

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Merged
matteogastaldello merged 1 commit into from
Jun 10, 2026
Merged

Emit JSON logs for logs-ingester compatibility #185

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21 changes: 13 additions & 8 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,6 @@ import (
"github.com/krateoplatformops/plumbing/kubeutil/event"
"github.com/krateoplatformops/plumbing/kubeutil/eventrecorder"
"github.com/krateoplatformops/plumbing/ptr"
prettylog "github.com/krateoplatformops/plumbing/slogs/pretty"

"github.com/krateoplatformops/unstructured-runtime/pkg/logging"
"github.com/krateoplatformops/unstructured-runtime/pkg/pluralizer"
Expand Down Expand Up @@ -102,16 +101,22 @@ func main() {
logLevel = slog.LevelDebug
}

lh := prettylog.New(&slog.HandlerOptions{
// JSON logs on stderr, compatible with logs-ingester: each line is a single JSON
// object with a canonical "timestamp" field in RFC3339Nano UTC. See
// docs/logs-ingester-compatibility.md.
lh := slog.NewJSONHandler(os.Stderr, &slog.HandlerOptions{
Level: logLevel,
AddSource: false,
},
prettylog.WithDestinationWriter(os.Stderr),
prettylog.WithColor(),
prettylog.WithOutputEmptyAttrs(),
)
ReplaceAttr: func(groups []string, a slog.Attr) slog.Attr {
if a.Key == slog.TimeKey {
return slog.String("timestamp", a.Value.Time().UTC().Format(time.RFC3339Nano))
}
return a
},
})
sl := slog.New(lh).With(slog.String("service", serviceName))

log := logging.NewLogrLogger(logr.FromSlogHandler(slog.New(lh).Handler()))
log := logging.NewLogrLogger(logr.FromSlogHandler(sl.Handler()))

// Kubernetes configuration
var cfg *rest.Config
Expand Down