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go/internal/lsp/debug/info.go
Rohan Challa 46bd65c853 internal/lsp/cache: add concurrency error check for go cmds
This change attempts to fix a concurrency error that would cause
textDocument/CodeLens, textDocument/Formatting, textDocument/DocumentLink,
and textDocument/Hover from failing on go.mod files.

The issue was that the go command would return a potential concurrency
error since the ModHandle and the ModTidyHandle are both using the
temporary go.mod file.

Updates golang/go#37824

Change-Id: I6cd63c1f75817c7308e033aec473966536a2a3bd
Reviewed-on: https://go-review.googlesource.com/c/tools/+/224917
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-04-08 03:22:09 +00:00

80 lines
2.0 KiB
Go

// 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 debug exports debug information for gopls.
package debug
import (
"context"
"fmt"
"io"
"strings"
"golang.org/x/tools/internal/gocommand"
)
type PrintMode int
const (
PlainText = PrintMode(iota)
Markdown
HTML
)
// Version is a manually-updated mechanism for tracking versions.
var Version = "master"
// PrintServerInfo writes HTML debug info to w for the Instance.
func (i *Instance) PrintServerInfo(ctx context.Context, w io.Writer) {
section(w, HTML, "Server Instance", func() {
fmt.Fprintf(w, "Start time: %v\n", i.StartTime)
fmt.Fprintf(w, "LogFile: %s\n", i.Logfile)
fmt.Fprintf(w, "Working directory: %s\n", i.Workdir)
fmt.Fprintf(w, "Address: %s\n", i.ServerAddress)
fmt.Fprintf(w, "Debug address: %s\n", i.DebugAddress)
})
PrintVersionInfo(ctx, w, true, HTML)
}
// PrintVersionInfo writes version information to w, using the output format
// specified by mode. verbose controls whether additional information is
// written, including section headers.
func PrintVersionInfo(ctx context.Context, w io.Writer, verbose bool, mode PrintMode) {
if !verbose {
printBuildInfo(w, false, mode)
return
}
section(w, mode, "Build info", func() {
printBuildInfo(w, true, mode)
})
fmt.Fprint(w, "\n")
section(w, mode, "Go info", func() {
gocmdRunner := &gocommand.Runner{}
version, err := gocmdRunner.Run(ctx, gocommand.Invocation{
Verb: "version",
})
if err != nil {
panic(err)
}
fmt.Fprintln(w, version.String())
})
}
func section(w io.Writer, mode PrintMode, title string, body func()) {
switch mode {
case PlainText:
fmt.Fprintln(w, title)
fmt.Fprintln(w, strings.Repeat("-", len(title)))
body()
case Markdown:
fmt.Fprintf(w, "#### %s\n\n```\n", title)
body()
fmt.Fprintf(w, "```\n")
case HTML:
fmt.Fprintf(w, "<h3>%s</h3>\n<pre>\n", title)
body()
fmt.Fprint(w, "</pre>\n")
}
}