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。调试器抱怨找不到存在的文件。

你们中有人知道如何在VS Code中启用Go应用程序的断点吗?

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

我已经检查了这不是文件权限的问题。我还跟踪了旧版本dlv的程序: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

我找到问题了。VS Code不能很好地处理符号链接。当我在VS Code中设置一个项目时，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

这个问题也描述在:https://github.com/golang/vscode-go/issues/1677

Answer 2

想在这里分享我的解决方案。在阅读了一些github问题vs-code-go之后，似乎问题是remotePath或substitutePath的结果。经过几次尝试，将remotePath设置为""终于成功了。

"version": "0.2.0",
"configurations": [
{
"name": "Connect to server",
"type": "go",
"request": "attach",
"mode": "remote",
"remotePath": "",
"port": 40000,
"host": "<host>",
}
]
}

Answer 3

这是继gbajson的回答。

符号链接对我来说是个问题。在启动时使用此配置。Json解决了这个问题，同时允许我保留我的符号链接:

{
"version": "0.2.0",
"configurations": [
{
"name": "Launch",
"type": "go",
"request": "launch",
"mode": "auto",
"program": "${workspaceFolder}/cmd/server/main.go",
"envFile": "${workspaceFolder}/.env",
"substitutePath": [
{
"from": "/home/me/go-workspaces",
"to": "/data/projects/workspaces"
}
]
}
]
}

具体来说，它是" replactepath "部分。

我的工作空间目录实际上是从"/home/me/go-workspaces"到真正的目录"/data/projects/workspaces"

见:https://github.com/golang/vscode-go/blob/master/docs/debugging.md debugging-symlink-directories

Answer 4

可以使用"sudo ps aux | fgrep{您的进程名}"来检查你的流程。如果它启动了多个进程，也许你应该改变你的进程启动模式，没有守护进程。