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a90b7300be
Instead of tagging events with their type, instead we infer the type from the label pattern. The standard event creators all have a matching test that returns true if the the labels pattern matches the ones that would be built by the creator. Spans and logs already have a unique label pattern, other event types required a special label marker. This makes the system much more extensible, and also cleans up some the API. Change-Id: I1fbc9ec07aa84ead6c12bbd5ca65b13b605bfa4a Reviewed-on: https://go-review.googlesource.com/c/tools/+/229242 Run-TryBot: Ian Cottrell <iancottrell@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
78 lines
2.2 KiB
Go
78 lines
2.2 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package core
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import (
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"context"
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"golang.org/x/tools/internal/event/keys"
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"golang.org/x/tools/internal/event/label"
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)
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// Log1 takes a message and one label delivers a log event to the exporter.
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// It is a customized version of Print that is faster and does no allocation.
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func Log1(ctx context.Context, message string, t1 label.Label) {
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Export(ctx, MakeEvent([3]label.Label{
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keys.Msg.Of(message),
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t1,
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}, nil))
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}
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// Log2 takes a message and two labels and delivers a log event to the exporter.
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// It is a customized version of Print that is faster and does no allocation.
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func Log2(ctx context.Context, message string, t1 label.Label, t2 label.Label) {
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Export(ctx, MakeEvent([3]label.Label{
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keys.Msg.Of(message),
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t1,
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t2,
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}, nil))
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}
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// Metric1 sends a label event to the exporter with the supplied labels.
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func Metric1(ctx context.Context, t1 label.Label) context.Context {
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return Export(ctx, MakeEvent([3]label.Label{
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keys.Metric.New(),
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t1,
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}, nil))
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}
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// Metric2 sends a label event to the exporter with the supplied labels.
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func Metric2(ctx context.Context, t1, t2 label.Label) context.Context {
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return Export(ctx, MakeEvent([3]label.Label{
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keys.Metric.New(),
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t1,
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t2,
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}, nil))
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}
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// Start1 sends a span start event with the supplied label list to the exporter.
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// It also returns a function that will end the span, which should normally be
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// deferred.
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func Start1(ctx context.Context, name string, t1 label.Label) (context.Context, func()) {
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return ExportPair(ctx,
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MakeEvent([3]label.Label{
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keys.Start.Of(name),
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t1,
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}, nil),
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MakeEvent([3]label.Label{
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keys.End.New(),
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}, nil))
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}
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// Start2 sends a span start event with the supplied label list to the exporter.
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// It also returns a function that will end the span, which should normally be
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// deferred.
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func Start2(ctx context.Context, name string, t1, t2 label.Label) (context.Context, func()) {
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return ExportPair(ctx,
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MakeEvent([3]label.Label{
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keys.Start.Of(name),
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t1,
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t2,
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}, nil),
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MakeEvent([3]label.Label{
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keys.End.New(),
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}, nil))
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}
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