Export etw package

pkg/etw/sample/sample.go

@@ -0,0 +1,62 @@
+// Shows a sample usage of the ETW logging package.
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+
+	"github.com/Microsoft/go-winio/internal/etw"
+	"github.com/sirupsen/logrus"
+
+	"golang.org/x/sys/windows"
+)
+
+func callback(sourceID *windows.GUID, state etw.ProviderState, level etw.Level, matchAnyKeyword uint64, matchAllKeyword uint64, filterData uintptr) {
+	fmt.Printf("Callback: isEnabled=%d, level=%d, matchAnyKeyword=%d\n", state, level, matchAnyKeyword)
+}
+
+func main() {
+	provider, err := etw.NewProvider("TestProvider", callback)
+
+	if err != nil {
+		logrus.Error(err)
+		return
+	}
+	defer func() {
+		if err := provider.Close(); err != nil {
+			logrus.Error(err)
+		}
+	}()
+
+	fmt.Printf("Provider ID: %s\n", provider)
+
+	reader := bufio.NewReader(os.Stdin)
+
+	fmt.Println("Press enter to log events")
+	reader.ReadString('\n')
+
+	if err := provider.WriteEvent(
+		"TestEvent",
+		etw.WithEventOpts(
+			etw.WithLevel(etw.LevelInfo),
+			etw.WithKeyword(0x140),
+		),
+		etw.WithFields(
+			etw.StringField("TestField", "Foo"),
+			etw.StringField("TestField2", "Bar"),
+			etw.Struct("TestStruct",
+				etw.StringField("Field1", "Value1"),
+				etw.StringField("Field2", "Value2")),
+			etw.StringArray("TestArray", []string{
+				"Item1",
+				"Item2",
+				"Item3",
+				"Item4",
+				"Item5",
+			})),
+	); err != nil {
+		logrus.Error(err)
+		return
+	}
+}