--- /dev/null
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package event
+
+import (
+ "context"
+ "errors"
+ "fmt"
+)
+
+// Log sends a log event with the supplied tag list to the exporter.
+func Log(ctx context.Context, tags ...Tag) {
+ dispatch(ctx, makeEvent(LogType, sTags{}, tags))
+}
+
+// Log1 sends a label event to the exporter with the supplied tags.
+func Log1(ctx context.Context, t1 Tag) context.Context {
+ return dispatch(ctx, makeEvent(LogType, sTags{t1}, nil))
+}
+
+// Log2 sends a label event to the exporter with the supplied tags.
+func Log2(ctx context.Context, t1, t2 Tag) context.Context {
+ return dispatch(ctx, makeEvent(LogType, sTags{t1, t2}, nil))
+}
+
+// Log3 sends a label event to the exporter with the supplied tags.
+func Log3(ctx context.Context, t1, t2, t3 Tag) context.Context {
+ return dispatch(ctx, makeEvent(LogType, sTags{t1, t2, t3}, nil))
+}
+
+// Print takes a message and a tag list and combines them into a single event
+// before delivering them to the exporter.
+func Print(ctx context.Context, message string, tags ...Tag) {
+ dispatch(ctx, makeEvent(LogType, sTags{Msg.Of(message)}, tags))
+}
+
+// Print1 takes a message and one tag delivers a log event to the exporter.
+// It is a customized version of Print that is faster and does no allocation.
+func Print1(ctx context.Context, message string, t1 Tag) {
+ dispatch(ctx, makeEvent(LogType, sTags{Msg.Of(message), t1}, nil))
+}
+
+// Print2 takes a message and two tags and delivers a log event to the exporter.
+// It is a customized version of Print that is faster and does no allocation.
+func Print2(ctx context.Context, message string, t1, t2 Tag) {
+ dispatch(ctx, makeEvent(LogType, sTags{Msg.Of(message), t1, t2}, nil))
+}
+
+// Error takes a message and a tag list and combines them into a single event
+// before delivering them to the exporter. It captures the error in the
+// delivered event.
+func Error(ctx context.Context, message string, err error, tags ...Tag) {
+ if err == nil {
+ err = errors.New(message)
+ message = ""
+ }
+ dispatch(ctx, makeEvent(LogType, sTags{Msg.Of(message), Err.Of(err)}, tags))
+}
+
+// Debugf sends a log event with the supplied message to the exporter.
+// This is intended only for temporary debugging lines, and usage should not
+// normally be checked in, preffering structured log events for things
+// that have to be used in production.
+func Debugf(ctx context.Context, message string, args ...interface{}) {
+ dispatch(ctx, makeEvent(LogType, sTags{Msg.Of(fmt.Sprintf(message, args...))}, nil))
+}