mirror of
https://github.com/golang/go
synced 2024-11-18 12:54:44 -07:00
df83f4e7c1
Seems we've drifted a bit from go1.12 support, mostly due to error wrapping. Fix this, as well as some assorted other failures. I haven't tested 1.12 interactively. For golang/go#39146 Change-Id: Id347ead2a13e89b76d2ae0047750e6b6b49911eb Reviewed-on: https://go-review.googlesource.com/c/tools/+/250941 Run-TryBot: Robert Findley <rfindley@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rebecca Stambler <rstambler@golang.org>
129 lines
4.4 KiB
Go
129 lines
4.4 KiB
Go
// Copyright 2018 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 cmd
|
|
|
|
import (
|
|
"context"
|
|
"flag"
|
|
"fmt"
|
|
"io"
|
|
"log"
|
|
"os"
|
|
"strings"
|
|
"time"
|
|
|
|
"golang.org/x/tools/internal/fakenet"
|
|
"golang.org/x/tools/internal/jsonrpc2"
|
|
"golang.org/x/tools/internal/lsp/cache"
|
|
"golang.org/x/tools/internal/lsp/debug"
|
|
"golang.org/x/tools/internal/lsp/lsprpc"
|
|
"golang.org/x/tools/internal/lsp/protocol"
|
|
"golang.org/x/tools/internal/tool"
|
|
errors "golang.org/x/xerrors"
|
|
)
|
|
|
|
// Serve is a struct that exposes the configurable parts of the LSP server as
|
|
// flags, in the right form for tool.Main to consume.
|
|
type Serve struct {
|
|
Logfile string `flag:"logfile" help:"filename to log to. if value is \"auto\", then logging to a default output file is enabled"`
|
|
Mode string `flag:"mode" help:"no effect"`
|
|
Port int `flag:"port" help:"port on which to run gopls for debugging purposes"`
|
|
Address string `flag:"listen" help:"address on which to listen for remote connections. If prefixed by 'unix;', the subsequent address is assumed to be a unix domain socket. Otherwise, TCP is used."`
|
|
IdleTimeout time.Duration `flag:"listen.timeout" help:"when used with -listen, shut down the server when there are no connected clients for this duration"`
|
|
Trace bool `flag:"rpc.trace" help:"print the full rpc trace in lsp inspector format"`
|
|
Debug string `flag:"debug" help:"serve debug information on the supplied address"`
|
|
|
|
RemoteListenTimeout time.Duration `flag:"remote.listen.timeout" help:"when used with -remote=auto, the -listen.timeout value used to start the daemon"`
|
|
RemoteDebug string `flag:"remote.debug" help:"when used with -remote=auto, the -debug value used to start the daemon"`
|
|
RemoteLogfile string `flag:"remote.logfile" help:"when used with -remote=auto, the -logfile value used to start the daemon"`
|
|
|
|
app *Application
|
|
}
|
|
|
|
func (s *Serve) Name() string { return "serve" }
|
|
func (s *Serve) Usage() string { return "" }
|
|
func (s *Serve) ShortHelp() string {
|
|
return "run a server for Go code using the Language Server Protocol"
|
|
}
|
|
func (s *Serve) DetailedHelp(f *flag.FlagSet) {
|
|
fmt.Fprint(f.Output(), `
|
|
The server communicates using JSONRPC2 on stdin and stdout, and is intended to be run directly as
|
|
a child of an editor process.
|
|
|
|
gopls server flags are:
|
|
`)
|
|
f.PrintDefaults()
|
|
}
|
|
|
|
// Run configures a server based on the flags, and then runs it.
|
|
// It blocks until the server shuts down.
|
|
func (s *Serve) Run(ctx context.Context, args ...string) error {
|
|
if len(args) > 0 {
|
|
return tool.CommandLineErrorf("server does not take arguments, got %v", args)
|
|
}
|
|
|
|
di := debug.GetInstance(ctx)
|
|
isDaemon := s.Address != "" || s.Port != 0
|
|
if di != nil {
|
|
closeLog, err := di.SetLogFile(s.Logfile, isDaemon)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer closeLog()
|
|
di.ServerAddress = s.Address
|
|
di.DebugAddress = s.Debug
|
|
di.Serve(ctx)
|
|
di.MonitorMemory(ctx)
|
|
}
|
|
var ss jsonrpc2.StreamServer
|
|
if s.app.Remote != "" {
|
|
network, addr := parseAddr(s.app.Remote)
|
|
ss = lsprpc.NewForwarder(network, addr,
|
|
lsprpc.RemoteDebugAddress(s.RemoteDebug),
|
|
lsprpc.RemoteListenTimeout(s.RemoteListenTimeout),
|
|
lsprpc.RemoteLogfile(s.RemoteLogfile),
|
|
)
|
|
} else {
|
|
ss = lsprpc.NewStreamServer(cache.New(ctx, s.app.options), isDaemon)
|
|
}
|
|
|
|
var network, addr string
|
|
if s.Address != "" {
|
|
network, addr = parseAddr(s.Address)
|
|
}
|
|
if s.Port != 0 {
|
|
network = "tcp"
|
|
addr = fmt.Sprintf(":%v", s.Port)
|
|
}
|
|
if addr != "" {
|
|
log.Printf("Gopls daemon: listening on %s network, address %s...", network, addr)
|
|
defer log.Printf("Gopls daemon: exiting")
|
|
return jsonrpc2.ListenAndServe(ctx, network, addr, ss, s.IdleTimeout)
|
|
}
|
|
stream := jsonrpc2.NewHeaderStream(fakenet.NewConn("stdio", os.Stdin, os.Stdout))
|
|
if s.Trace && di != nil {
|
|
stream = protocol.LoggingStream(stream, di.LogWriter)
|
|
}
|
|
conn := jsonrpc2.NewConn(stream)
|
|
err := ss.ServeStream(ctx, conn)
|
|
if errors.Is(err, io.EOF) {
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
|
|
// parseAddr parses the -listen flag in to a network, and address.
|
|
func parseAddr(listen string) (network string, address string) {
|
|
// Allow passing just -remote=auto, as a shorthand for using automatic remote
|
|
// resolution.
|
|
if listen == lsprpc.AutoNetwork {
|
|
return lsprpc.AutoNetwork, ""
|
|
}
|
|
if parts := strings.SplitN(listen, ";", 2); len(parts) == 2 {
|
|
return parts[0], parts[1]
|
|
}
|
|
return "tcp", listen
|
|
}
|