snapshot of https://github.com/cortezaproject/corteza.git (2024.9.x, 2026-09-18; blobs > 131072B omitted)

server/pkg/monitor/monitor.go

@@ -0,0 +1,72 @@
+package monitor
+
+import (
+	"context"
+	"runtime"
+	"time"
+
+	"go.uber.org/zap"
+
+	"github.com/cortezaproject/corteza/server/pkg/logger"
+	"github.com/cortezaproject/corteza/server/pkg/options"
+)
+
+var (
+	// Holds options for monitor
+	opt options.MonitorOpt
+
+	log *zap.Logger
+)
+
+func Setup(logger *zap.Logger, o options.MonitorOpt) {
+	log = logger.Named("monitor")
+	opt = o
+}
+
+func Watcher(ctx context.Context) {
+	if opt.Interval == 0 {
+		return
+	}
+
+	if opt.Interval < time.Second {
+		log.Warn("monitoring interval less than 1 second, disabling")
+		return
+	}
+
+	go NewMonitor(ctx, opt.Interval)
+	log.Debug("watcher initialized", zap.Duration("interval", opt.Interval))
+}
+
+func NewMonitor(ctx context.Context, interval time.Duration) {
+	var (
+		ticker = time.NewTicker(interval)
+	)
+
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			// Read full mem stats
+			m := new(runtime.MemStats)
+			runtime.ReadMemStats(m)
+
+			log.With(
+				logger.Uint64("alloc", m.HeapAlloc),
+				logger.Uint64("totalAlloc", m.TotalAlloc),
+				logger.Uint64("sys", m.Sys),
+				logger.Uint64("mallocs", m.Mallocs),
+				logger.Uint64("frees", m.Frees),
+
+				logger.Uint64("liveObjects", m.Mallocs-m.Frees),
+				logger.Uint64("pauseTotalNs", m.PauseTotalNs),
+				zap.Uint32("numGC", m.NumGC),
+				zap.Int("numGoRoutines", runtime.NumGoroutine()),
+			).Info("tick")
+
+		case <-ctx.Done():
+			return
+		}
+
+	}
+}