cache: adding factory

internal/cache/factory.go

@@ -0,0 +1,26 @@
+package cache
+
+import (
+	"fmt"
+
+	"github.com/karlseguin/typed"
+)
+
+type Factory func(opts typed.Typed) (Store, error)
+
+var factories = map[string]Factory{
+	"memory": func(opts typed.Typed) (Store, error) {
+		return NewMemoryStore(), nil
+	},
+}
+
+func RegisterFactory(driver string, factory Factory) {
+	factories[driver] = factory
+}
+
+func Make(driver string, opts typed.Typed) (Store, error) {
+	if factory, ok := factories[driver]; ok {
+		return factory(opts)
+	}
+	return nil, fmt.Errorf("Invalid cache storage: %s", driver)
+}

internal/cache/factory_test.go

@@ -0,0 +1,20 @@
+package cache_test
+
+import (
+	"testing"
+
+	"github.com/eosswedenorg/thalos/internal/cache"
+	"github.com/stretchr/testify/require"
+)
+
+func TestFactory_Make(t *testing.T) {
+	store, err := cache.Make("memory", map[string]any{})
+	require.NoError(t, err)
+	require.Equal(t, cache.NewMemoryStore(), store)
+}
+
+func TestFactory_MakeInvalidDriver(t *testing.T) {
+	store, err := cache.Make("87923yus", map[string]any{})
+	require.Error(t, err)
+	require.Nil(t, store)
+}