| // Copyright 2020 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. |
| |
| // +build !windows |
| |
| package lsprpc |
| |
| import ( |
| "crypto/sha1" |
| "fmt" |
| "log" |
| "os" |
| "os/exec" |
| "path/filepath" |
| ) |
| |
| // autoNetworkAddress resolves an id on the 'auto' pseduo-network to a |
| // real network and address. On unix, this uses unix domain sockets. |
| func autoNetworkAddress(goplsPath, id string) (network string, address string) { |
| // Especially when doing local development or testing, it's important that |
| // the remote gopls instance we connect to is running the same binary as our |
| // forwarder. So we encode a short hash of the binary path into the daemon |
| // socket name. If possible, we also include the buildid in this hash, to |
| // account for long-running processes where the binary has been subsequently |
| // rebuilt. |
| h := sha1.New() |
| cmd := exec.Command("go", "tool", "buildid", goplsPath) |
| cmd.Stdout = h |
| var pathHash []byte |
| if err := cmd.Run(); err == nil { |
| pathHash = h.Sum(nil) |
| } else { |
| log.Printf("error getting current buildid: %v", err) |
| sum := sha1.Sum([]byte(goplsPath)) |
| pathHash = sum[:] |
| } |
| shortHash := fmt.Sprintf("%x", pathHash)[:6] |
| user := os.Getenv("USER") |
| if user == "" { |
| user = "shared" |
| } |
| basename := filepath.Base(goplsPath) |
| idComponent := "" |
| if id != "" { |
| idComponent = "-" + id |
| } |
| return "unix", filepath.Join(os.TempDir(), fmt.Sprintf("%s-%s-daemon.%s%s", basename, shortHash, user, idComponent)) |
| } |