docs: add worker turner sample

features/snippets/worker_tuner/worker_tuner.go

@@ -0,0 +1,64 @@
+package worker_tuner
+
+import (
+	"go.temporal.io/sdk/contrib/sysinfo"
+	"go.temporal.io/sdk/worker"
+)
+
+// @@@SNIPSTART go-resource-based-tuner
+func resourceBasedTuner() (worker.Options, error) {
+	tuner, err := worker.NewResourceBasedTuner(worker.ResourceBasedTunerOptions{
+		TargetMem:    0.8,
+		TargetCpu:    0.9,
+		InfoSupplier: sysinfo.SysInfoProvider(),
+	})
+	if err != nil {
+		return worker.Options{}, err
+	}
+	return worker.Options{
+		Tuner: tuner,
+	}, nil
+}
+
+// @@@SNIPEND
+
+// @@@SNIPSTART go-composite-tuner
+func compositeTuner() (worker.Options, error) {
+	options := worker.DefaultResourceControllerOptions()
+	options.MemTargetPercent = 0.8
+	options.CpuTargetPercent = 0.9
+	options.InfoSupplier = sysinfo.SysInfoProvider()
+	controller := worker.NewResourceController(options)
+	wfSS, err := worker.NewFixedSizeSlotSupplier(10)
+	if err != nil {
+		return worker.Options{}, err
+	}
+
+	actSS, err := worker.NewResourceBasedSlotSupplier(controller, worker.DefaultActivityResourceBasedSlotSupplierOptions())
+	if err != nil {
+		return worker.Options{}, err
+	}
+	laSS, err := worker.NewResourceBasedSlotSupplier(controller, worker.DefaultActivityResourceBasedSlotSupplierOptions())
+	if err != nil {
+		return worker.Options{}, err
+	}
+	nexusSS, err := worker.NewFixedSizeSlotSupplier(10)
+	if err != nil {
+		return worker.Options{}, err
+	}
+
+	compositeTuner, err := worker.NewCompositeTuner(worker.CompositeTunerOptions{
+		WorkflowSlotSupplier:      wfSS,
+		ActivitySlotSupplier:      actSS,
+		LocalActivitySlotSupplier: laSS,
+		NexusSlotSupplier:         nexusSS,
+	})
+	if err != nil {
+		return worker.Options{}, err
+	}
+	return worker.Options{
+		Tuner: compositeTuner,
+	}, nil
+}
+
+// @@@SNIPEND