1// Copyright 2019 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package export
6
7import (
8	"context"
9
10	"golang.org/x/tools/internal/telemetry"
11)
12
13// Multi returns an exporter that invokes all the exporters given to it in order.
14func Multi(e ...Exporter) Exporter {
15	a := make(multi, 0, len(e))
16	for _, i := range e {
17		if i == nil {
18			continue
19		}
20		if i, ok := i.(multi); ok {
21			a = append(a, i...)
22			continue
23		}
24		a = append(a, i)
25	}
26	return a
27}
28
29type multi []Exporter
30
31func (m multi) StartSpan(ctx context.Context, span *telemetry.Span) {
32	for _, o := range m {
33		o.StartSpan(ctx, span)
34	}
35}
36func (m multi) FinishSpan(ctx context.Context, span *telemetry.Span) {
37	for _, o := range m {
38		o.FinishSpan(ctx, span)
39	}
40}
41func (m multi) Log(ctx context.Context, event telemetry.Event) {
42	for _, o := range m {
43		o.Log(ctx, event)
44	}
45}
46func (m multi) Metric(ctx context.Context, data telemetry.MetricData) {
47	for _, o := range m {
48		o.Metric(ctx, data)
49	}
50}
51func (m multi) Flush() {
52	for _, o := range m {
53		o.Flush()
54	}
55}
56