| // 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 protocol |
| |
| import ( |
| "bytes" |
| "context" |
| |
| "golang.org/x/tools/internal/event" |
| "golang.org/x/tools/internal/event/core" |
| "golang.org/x/tools/internal/event/export" |
| "golang.org/x/tools/internal/event/label" |
| "golang.org/x/tools/internal/xcontext" |
| ) |
| |
| type contextKey int |
| |
| const ( |
| clientKey = contextKey(iota) |
| ) |
| |
| func WithClient(ctx context.Context, client Client) context.Context { |
| return context.WithValue(ctx, clientKey, client) |
| } |
| |
| func LogEvent(ctx context.Context, ev core.Event, lm label.Map, mt MessageType) context.Context { |
| client, ok := ctx.Value(clientKey).(Client) |
| if !ok { |
| return ctx |
| } |
| buf := &bytes.Buffer{} |
| p := export.Printer{} |
| p.WriteEvent(buf, ev, lm) |
| msg := &LogMessageParams{Type: mt, Message: buf.String()} |
| // Handle messages generated via event.Error, which won't have a level Label. |
| if event.IsError(ev) { |
| msg.Type = Error |
| } |
| // TODO(adonovan): the goroutine here could cause log |
| // messages to be delivered out of order! Use a queue. |
| go client.LogMessage(xcontext.Detach(ctx), msg) |
| return ctx |
| } |