go - 无法在 VSCode 中使用断点调试 Golang

Question

我在 VS Code 中使用断点调试 Golang 应用程序。调试器提示无法找到存在的文件。

你们有人知道如何在 VS Code 中为 Go 应用程序启用断点吗？

调试器日志:

Debuggee is not running. Setting breakpoints without halting.
All cleared
Creating on: /home/gbajson/Sync/clickr/clickr-node-api/clickr-node-api.go:63
Creating on: /home/gbajson/Sync/clickr/clickr-node-api/clickr-node-api.go:84
All cleared
All set:[]
SetBreakPointsResponse
2021-10-21T12:52:17+02:00 debug layer=rpc <- RPCServer.CreateBreakpoint(rpc2.CreateBreakpointIn{"Breakpoint":{"id":0,"name":"","addr":0,"addrs":null,"file":"/home/gbajson/Sync/clickr/clickr-node-api/clickr-node-api.go","line":63,"Cond":"","HitCond":"","continue":false,"traceReturn":false,"goroutine":false,"stacktrace":0,"LoadArgs":{"FollowPointers":true,"MaxVariableRecurse":1,"MaxStringLen":64,"MaxArrayValues":64,"MaxStructFields":-1},"LoadLocals":{"FollowPointers":true,"MaxVariableRecurse":1,"MaxStringLen":64,"MaxArrayValues":64,"MaxStructFields":-1},"WatchExpr":"","WatchType":0,"hitCount":null,"totalHitCount":0,"disabled":false}})
2021-10-21T12:52:17+02:00 debug layer=rpc -> *rpc2.CreateBreakpointOut{"Breakpoint":{"id":0,"name":"","addr":0,"addrs":null,"file":"","line":0,"Cond":"","HitCond":"","continue":false,"traceReturn":false,"goroutine":false,"stacktrace":0,"LoadArgs":null,"LoadLocals":null,"WatchExpr":"","WatchType":0,"hitCount":null,"totalHitCount":0,"disabled":false}} error: "could not find file /home/gbajson/Sync/clickr/clickr-node-api/clickr-node-api.go"
2021-10-21T12:52:17+02:00 debug layer=rpc <- RPCServer.CreateBreakpoint(rpc2.CreateBreakpointIn{"Breakpoint":{"id":0,"name":"","addr":0,"addrs":null,"file":"/home/gbajson/Sync/clickr/clickr-node-api/clickr-node-api.go","line":84,"Cond":"","HitCond":"","continue":false,"traceReturn":false,"goroutine":false,"stacktrace":0,"LoadArgs":{"FollowPointers":true,"MaxVariableRecurse":1,"MaxStringLen":64,"MaxArrayValues":64,"MaxStructFields":-1},"LoadLocals":{"FollowPointers":true,"MaxVariableRecurse":1,"MaxStringLen":64,"MaxArrayValues":64,"MaxStructFields":-1},"WatchExpr":"","WatchType":0,"hitCount":null,"totalHitCount":0,"disabled":false}})
2021-10-21T12:52:17+02:00 debug layer=rpc -> *rpc2.CreateBreakpointOut{"Breakpoint":{"id":0,"name":"","addr":0,"addrs":null,"file":"","line":0,"Cond":"","HitCond":"","continue":false,"traceReturn":false,"goroutine":false,"stacktrace":0,"LoadArgs":null,"LoadLocals":null,"WatchExpr":"","WatchType":0,"hitCount":null,"totalHitCount":0,"disabled":false}} error: "could not find file /home/gbajson/Sync/clickr/clickr-node-api/clickr-node-api.go"
2
Error on CreateBreakpoint: could not find file /home/gbajson/Sync/clickr/clickr-node-api/clickr-node-api.go

文件存在:

gbajson@misio:~$ ls -l /home/gbajson/Sync/clickr/clickr-node-api/clickr-node-api.go
-rw-r--r-- 1 gbajson gbajson 2961 Oct 21 12:22 /home/gbajson/Sync/clickr/clickr-node-api/clickr-node-api.go

我已经检查过这不是文件权限的问题。我还跟进了dlv lagacy版本的过程: https://github.com/golang/vscode-go/blob/master/docs/debugging-legacy.md#selecting-legacy-debug-adapter

调试器配置

• workspace.code-workspace

   "launch": {
   "version": "0.2.0",
   "configurations": [
       {
  
           "name": "Debug Go",
           "type": "go",
           "request": "launch",
           "mode": "auto",
           "program": "${fileDirname}",
           "debugAdapter": "legacy",
           "env": {},
           "args": [],
           "showLog": true,
           "logOutput": "rpc",
           "trace": "log"
       },
  

• settings.json

{
    "go.delveConfig": {
        "debugAdapter": "legacy",
    },

Answer 1

我发现了问题。 VS Code 不能很好地处理符号链接(symbolic link)。当我在 VS Code 中以真实路径设置项目时，调试器开始正常工作。

gbajson@misio:~$ realpath /home/gbajson/Sync/clickr/clickr-node-api/clickr-node-api.go
/storage/amoje/Sync/clickr/clickr-node-api/clickr-node-api.go

此问题也描述于:https://github.com/golang/vscode-go/issues/1677