mirror of
https://github.com/golang/go
synced 2024-11-18 14:24:44 -07:00
01e0872ccf
This extracts the printing code from the log writer so it can be re-used
and then changes the loggers in the lsp to use it.
This means that messages that used to look like
date:
message=text
now print as
date: text
which makes the logs a lot easier to read.
Change-Id: I9dfbae47cdc9aeb7d3ca3279e445f39f2e590827
Reviewed-on: https://go-review.googlesource.com/c/tools/+/232989
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
58 lines
1.4 KiB
Go
58 lines
1.4 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 export
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import (
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"context"
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"fmt"
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"io"
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"sync"
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"golang.org/x/tools/internal/event"
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"golang.org/x/tools/internal/event/core"
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"golang.org/x/tools/internal/event/label"
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)
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// LogWriter returns an Exporter that logs events to the supplied writer.
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// If onlyErrors is true it does not log any event that did not have an
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// associated error.
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// It ignores all telemetry other than log events.
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func LogWriter(w io.Writer, onlyErrors bool) event.Exporter {
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lw := &logWriter{writer: w, onlyErrors: onlyErrors}
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return lw.ProcessEvent
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}
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type logWriter struct {
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mu sync.Mutex
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printer Printer
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writer io.Writer
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onlyErrors bool
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}
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func (w *logWriter) ProcessEvent(ctx context.Context, ev core.Event, lm label.Map) context.Context {
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switch {
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case event.IsLog(ev):
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if w.onlyErrors && !event.IsError(ev) {
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return ctx
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}
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w.mu.Lock()
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defer w.mu.Unlock()
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w.printer.WriteEvent(w.writer, ev, lm)
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case event.IsStart(ev):
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if span := GetSpan(ctx); span != nil {
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fmt.Fprintf(w.writer, "start: %v %v", span.Name, span.ID)
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if span.ParentID.IsValid() {
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fmt.Fprintf(w.writer, "[%v]", span.ParentID)
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}
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}
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case event.IsEnd(ev):
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if span := GetSpan(ctx); span != nil {
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fmt.Fprintf(w.writer, "finish: %v %v", span.Name, span.ID)
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}
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}
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return ctx
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}
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